Epson fx 1170 инструкция на русском

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Summary of Contents for Epson FX 1170 — B/W Dot-matrix Printer

  • Page 1: Service Manual

    EPSON EPSON TERMINAL PRINTER FX-870/1170 SERVICE MANUAL 4001461 REV.-A…

  • Page 2
    However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them. “ The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in this manual or the consequences thereof. @ Copyright 1992 by SEIKO EPSON CORPORATION…
  • Page 3
    THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS. WARNING REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE.
  • Page 4
    Includes a step-by-step guide for product disassembly and assembly. Chapter 4 — Includes a step-by-step guide for adjustment. Chapter 5 — Provides Epson-approved techniques for troubleshooting. Chapter 6 — Describes preventive maintenance techniques. The contents of this manual are subject to change without notice. iv -…
  • Page 5
    , . : ; : : \ REVISION SHEET REVISON DATE ISSUED CHANGE DOCUMENT June 15, 1992 1st issue ‘ ? : * (“ .7,, -v–…
  • Page 6
    REV.-A TABLE OF CONTENTS CHAPTER 1. GENERAL DESCRIPTION CHAPTER 2. OPERATING PRINCIPLES CHAPTER 3. DISASSEMBLY AND ASSEMBLY CHAPTER 4. ADJUSTMENTS TROUBLESHOOTING CHAPTER 5. CHAPTER 6, MAINTENANCE APPENDIX – vi -…

  • Page 7: Table Of Contents

    REV.-A CHAPTER 1 GENERAL DESCRIPTION 1.1 Scope ………………….. . 1.1.1 Features .

  • Page 8
    REV.-A 1.6 Main Components ~~ti…m-.—.—…—.-.m.m..-.mm………1-28 1.6.1 BOARDASSEMBLY,C094MAlN(Main ControlCircuitBoard) ….1-29 1.6.2 BOARDASSEMBLY,C094PNL(Control Pand~HtiWd) ..-.l-3O 1.6.3 BOARD ASSEMBLY, C076PSBFSE (Power SuPPIY circuit Board) ..1 -30 1.6.4 Printer Mechanism …………….1-31 1.6.5 Housing Assembly .
  • Page 9
    REV.-A LIST OF TABLES Table 1-1. Line Feed Speed (1 line= 1/6”) …………1-5 Table 1-2.

  • Page 10: Scope

    REV.-A Scope EPSON FX-87WI 170 dot matrix Printer. These specifications apply to the 1.1.1 Features Upward compatibility with the FX-850(+)/1050(+), FX-800/1000, FX-86e/286e 380 cps (high-speed draft for both 80 and 136-column models) 285 cps (draft pica), 342 CPS (draft elite)

  • Page 11
    REV.-A r~..“ 80-column model 136-column model Figure 1-1. External View of the FX-870/1170 . ,.

  • Page 12: Options

    REV.-A 1.1.2 Options Plain cut sheet feeder ( 80-column) C806371 (U.S. version) Plain cut sheet feeder ( 80-column) C806372 (other) Plain cut sheet feeder (136-column) C806391 (U.S. version) Plain cut sheet feeder (136-column) C806392 (other) Cut sheet feeder ( 80-column) C806381 (U.S.

  • Page 13: Specifications

    REV.-A 1.2 Specifications 1.2.1 Hardware Specifications 1.2.1.1 Printing Method Impact dot matrix Printing method: Pin configuration: 9 wires (diameter 0.29 mm) wire 2+— — — 0.35mm (lf12”) ‘ — — — — — — — 9& Figure 1-2. Pin Configuration 9 x 7 matrix (high-speed draft) Dot matrix: 9 x 9 matrix (draft)

  • Page 14
    REV.-A Table 1-1. Line Feed Speed (1 iine = 1/6”) Continuous feed Intermittent feed Thin Thick Thin Thick Type of paper ms (ips) ms (ips) 55 (3.0) 66 (2.5) Fanfold paper 45 (3.7) 55 (3.0) Cut sheet (manual) 48 (3.5) 55 (3.0) Cut sheet (CSF) Thickness is less than or equal to 0.18 mm.

  • Page 15: Paper Specifications

    REV.-A 3) Pull tractor feed Set the release lever to the PULL position. Load the paper from the front, rear, or bottom entrance. (The front or bottom entrance is recommended for thick paper or labels.) Release the friction feed mechanism. Remove the paper-tension unit and attach the pull tractor unit.

  • Page 16: Table 1-4. Specifications For Continuous Paper

    REV.-A — . . — . — .,. . . , ——i m . —— m, -— ..L . -. A,.- — R- —– 1 ame 1-s. specmcawons lor uu~ mee~s [eamomess uupncamng raper] -A -,- — —A— ,-— Width 80-column 182-257 mm (7.2-10.1”) front insertion…

  • Page 17: Table 1-6. Specifications For Labels

    REV.-A “:% Table 1-6. Specifications for Labels 2 1/2” 15/16” Size 4“ 15/16” 4“ 17/16” 0.07-0.09 mm (0.0028-0.0031”) — base paper Thickness 0.16-0.19 mm (0.0063-0.0075”) — total Plain paper Quality Notes: 1) Labels must be fanfold. AVERY CONTINUOUS FORM IABELS 2) Example of labels AVERY MINI-LINE LABELS 3) Labels should be used with the pull tractor (front, bottom), or with the front push tractor.

  • Page 18: Printable Area

    REV.-A 1.2.1.4 Printable Area 1) Cut sheets 148-257 mm (5.8-10.1”): 80 columns top insertion 148-420 mm (5.8-16.5”) : 136 columns 182-257 mm (7.2-10.1”): 80 columns front insertion 182-364 mm (7.2-14.3”): 136 columns > < Printable Area < T“ WXYZ ~ ABCD WXYZ I ABCD Figure 1-3.

  • Page 19: Figure 1-4. Printable Area For Continuous Paper

    REV.-A 2) Continuous paper < > *1 , Printable Area < ABCD WXYZ ABCD WXYZ Figure 1-4. Printable Area for Continuous Paper *1 13 mm (0.51”) or more when the paper width is 101 mm to 241 mm (4” to 9.5”). 25 mm (1.0”) or more ~~. when the paper width is 254 mm (10”).

  • Page 20: Ribbon Cattridge

    REV.-A 3) Roll paper (80-column model only) 216 +/- 3 mm (8.5 +/- 0.12”) top insertion 101-254 mm (4-10”): 80 columns 101-406 (4-16”): 136 columns > Printable Area WXYZ .—0. % WXYZ ABCD Figure 1-5. Printable Area for Roll Paper *1 3.0 mm (0.1 2“) or more Note:…

  • Page 21: Electrical Specifications

    REV.-A c- .., 1.2.1.6 Electrical Specifications See Table 1-8 and 1-9. Table 1-8. Electrical Specifications for 120V Model 120 VAC Rated voltage 103.5-132 V AC Input voltage range 50-60 Hz Rated frequency range 49.5-60.5 Hz Input frequency range 1.8 A…

  • Page 22: Reliability

    REV.-A 1.2.1.8 Reliability 5 million lines (excluding a printhead) MCBF (MCBF: Mean Cycles Between Failures) 4000 power on hours (duty cycle 80-column model 25Yo) — MTBF (expected value) 6000 power on hours (duty cycle 25Yo) —136-column model (MTBF : Mean Time Between Failures) 100 million characters (14 dots/character) Printhead Life 1.2.1.9 Safety Approvals…

  • Page 23: Input Data Buffer

    REV.-A f’ : . .,’;: Table 1-11. Character Size and Pitch .,.- Type letters I Width I Height Character pitch [mm] [mm] [mm] Pica 2.54 (10 cpi) 1.05 1.48 (17 cpi) Condensed 2.11 (12 cpi) Elite 1.27 (20 cpi) Condensed elite 0.85 Table 1-12.

  • Page 24: Interface

    REV.-A , 1.3 Interface This printer has a built-in, 8-bit centronics parallel interface. 1.3.1 Parallel Interface 8-bit parallel Data transmission mode Controlled by external STROBE pulse. Synchronization Controlled by ACKNLG and BUSY signals. Handshaking ITL- compatible Logic level 57-30360 (Amphenol) or equivalent Connector plug It is recommended that the interface cable be as short as possible (10 feet maximum).

  • Page 25
    REV.-A (Continued) e . — . . . , . . . Signal Return Signal Dir. Description Pin No. Pin No. Name Approx.12 us pulse. LOW indicates that data has been ACKNLG received and that the printer is ready to accept more data. A HIGH signal indicates that the printer cannot receive more BUSY data.

  • Page 26: Optional Interface

    REV.-A Optional Interface , 1.3.2 The following interface cards can be used for this printer. Table 1-15. Optional Interface Type Catalog # Serial I/F card C82305* (inch screw) C82306* (inch screw) Serial l/F card C82307* (inch screw) 32KB intelligent serial l/F card C82308* (inch screw) 32KB intelligent serial l/F card 32KB intelligent parallel l/F card…

  • Page 27: Buttons

    REV.-A , : . , 1.4.2 Buttons [PAUSEI Selects printing or pause alternately when there is some data to print in the input buffer. Advances continuous paper to tear-off position when the printer has printed all received data and is ready to receive more print data.

  • Page 28: Indicators

    REV.-A Advances the paper forward by 1/108 inch per step. IFONTl+[pApER F E E D I Moves the paper backward by 1/108 inch per step. Pressing FONT along with PAUSE or PAPER FEED lets you micro-adjust the following positions: the loading position, immediately after paper is loaded in the printer. the tear-off position, when paper has been advanced for tear off.

  • Page 29: Functions

    REV.-A .!. ,,. , Functions Default Settings 1.5.1 Users can set certain default parameters, which will be used at printer initialization. To change the parameters shown in Table 1-16, Group 1 Features, follow the steps below. Turn on the printer while pressing the FONT button. Then, the current default settings will be printed on the paper loaded in the paper path.

  • Page 30
    REV.-A I ault$ I — Iu. -g uup m rcacul ca READY Feature Setting FONT COND. ESC/P Emulation IBM Proprinter Pica BLINKS Character pitch Elite Page length 11 inch 12 inch 8.5 inch 70/6 inch (A4) No skip BLINKS Skip over perforation Skip 1 inch BLINKS Zero face…
  • Page 31
    REV.-A Table 1 7. Group 2 Features (ESC/P Mode) CG table COND. READY FONT Italic U. S. A.(std. setting) France BLINKS Germany U.K. Denmark BLINKS I Sweden BLINKS Italy BLINKS BLINKS Spain BLINKS Character table PC437 PC850 BLINKS PC860 . . . PC863 PC865 PC437 Greek…

  • Page 32: Power On Default Settings

    REV.-A 1.5.2 Power On Default Settings The printer also lets you change some of its power on parameters. To change the settings shown in Table 1- 19, Group 3 Features (Power on settings), follow the steps below. 1. Turn on the printer while pressing the PAUSE, PAPER FEED, and FONT buttons. 2.

  • Page 33: Self Test

    REV.-A Self Test 1.5.5 Press the PAPER FEED button while turning on the printer to put the printer in self-test mode. To stop the self test, turn off the printer. (The control panel is still operational in self-test mode for paper handling and font selection.

  • Page 34: Sheet Loading And Sheet Ejection

    REV.-A 1.5.10 Sheet Loading and Sheet Ejection The release lever engages or disengages the push-tractor unit drive mechanism. The lever’s operation provides with improved paper-handling functions: (a) Automatic cut sheet loading without the cut sheet feeder Move the release Ievertothe FRICTION position and load a sheet using the paper guide (top or optional front). A few seconds later, the sheet is automatically loaded to the top-of-form position, and the printer becomes ready to print.

  • Page 35: Printer Initialization

    REV.-A (3rd step) Position 1 $ \ \ &’” r’ Platen Gap Adjust Lever Figure 1-10. Lever Positions 1.5.12 Printer Initialization The printer is initialized in the following cases. (1) When the printer is turned on. (2) When the INIT signal or CMREQ (optional l/F ) is input. When the printer is initialized, it performs the following functions: The printhead returns to the leftmost position (carriage home).

  • Page 36: Buzzer

    REV.-A 1.5.13 Buzzer The buzzer beeps for 0.1 second at a time. These beep sounds a recombined in various ways, as shown below, to indicate different meanings. In the following table, each “*” stands for one beep. Table 1-21. Buzzer Functions Sound and Description Status BEL code…

  • Page 37: Housing Assembly

    REV.-A . : :, \ . 1.6 Main Components f’ The components of the FX-870/l 170 are for easy removal and replacement during maintenance designed and repair. The main components are: BOARD ASSEMBLY, C094 MAIN BOARD ASSEMBLY, C094 PNL BOARD ASSEMBLY, C076 PSB/PSE Printer Mechanism Housing Assembly The following figure shows the main components of the FX-870/l 170.

  • Page 38
    REV.-A C094 MAIN (Main Control Circuit Board) q.6.I ASSEMBLY, BOARD Basically, the same board layout is used in both the 136-column model and the 80-column model. The CPU It consists of a TMP90C041F 8-bit CPU, an on this board controls all the main functions of the printer. E05A55YA gate array, an E2PROM, a PSRAM, a MASK ROM, motor drivers, and head drive transistors.
  • Page 39
    REV.-A BOARD ASSEMBLY, C094 PNL (Control Panel Circuit Board) 1.6.2 K’. *“ This board functions as the control panel of the FX-870/l 170, and consists of a power switch, three function switches, and three indicator LEDs. Figure 1-13. BOARD ASSEMBLY, C094 PNL (Control Panel Circuit Board) 1.6.3 BOARD ASSEMBLY, C076 PSB/PSE (Power Supply Circuit Board) This board is composed of an input filter circuit, a transforming circuit, a switching regulator circuit, a rectifying circuit, a smoothing circuit, and various protecting circuits.
  • Page 40
    REV.-A 1.6.4 Printer Mechanism The printer mechanism consists of a 9-pin impact dot head, a carriage mechanism, a carriage motor, a paPer feed mechanism, a paper feed motor, a ribbon feed mechanism, and various sensors. <136-column <80-column model> Figure 1-15. Printer Mechanism 1-31…
  • Page 41
    REV.-A 1.6.5 Housing Assembly The printer mechanism and all the boards are contained in a housing assembly that consists of the uppercase and the lower case. Printe Upper Lower .-,. . {’ , . . : . . : ; Front Co Figure 1-16.
  • Page 42
    REV.-A CHAPTER 2 OPERATION PRINCIPLES Mechanism Operation …………… . 2-1 2.1 Printer Printhead Mechanism .
  • Page 43
    REV.-A LIST OF FIGURES c’ .’% Figure 2-l. Howthe Printhead Works .~.—..-..-……2-2 Figure 2-2. Carriage Operation ….- -~…f~~.~~..~.~~.-.—-~~..- 2-3 Figure 2-3. Platen Gap Adjust Lever …………..2-4 Figure 2-4.

  • Page 44: Printer Mechanism Operation

    REV.-A 2.1 Printer Mechanism Operation This section describes the printer mechanism of the FX-870/l 170 printer and explains how the printer works. The FX-870/l 170 printer mechanism features a 9-pin impact dot printhead for seriaI Printin9. It has four main parts: 1) the printhead mechanism, 2) the carriage movement mechanism, 3) the paper feed mechanism, and 4) the ribbon advance mechanism.

  • Page 45
    REV.-A c . , . — . . — — — Figure 2-1 shows the action of the printer mechanism when a single dot is printed. “ Platen Ribbon Mask Dot Wire Wire Resetting Spring Stopper .ctuatlngT:-Rbf)cl Paper B$l=lieaclDrivingCOil Actuating Plate Spring Figure 2-1.

  • Page 46: Carriage Mechanism

    REV.-A ‘ 2.1.2 Carriage Mechanism The timing belt is connected to the lower side of the carriage. With the printhead installed, the carriage moves either direction along the carriage guide shaft. The carriage (CR)motor (a stepping motor) drives the timin9 belt which moves the carriage.

  • Page 47: Platen Gap Adjustment

    REV.-A 2.1.3 Platen Gap Adjustment &>., Theplatengap (the gap between the platen andtheprinthead) can beadjustedto allowthe printerto use paper a of differentweights orthicknesses. When the platen gap adjust lever is moved forward or backward, the carriage guide shaft rotates. This rotation moves the carriage either toward or away from the platen and changes the platen gap.

  • Page 48: Paper Handling Mechanisms

    REV.-A 2.1.4 Paper Handling Mechanisms During normal operation, the paper is fed to the printer, advanced to the specified position, and ejected from the printer. These paper handling operations are performed by various paper handling mechanisms, such as the tractors, platens, rollers, and gears. This section describes the printer’s paper handling mechanisms. 2.1.4.1 Paper Feed Mechanisms Cut sheets are fed by friction.

  • Page 49: Paper Advance Mechanisms

    REV.-A 2.1.4.2 Paper Advance Mechanisms ,> -, , > This section describes how the friction advance and tractor advance mechanisms work to advance the PaPer . . . through the printer. (1) Friction Advance Method The paper is held between the platen and paper guide rollers and between the paper tension roller and paper tension unit cover.

  • Page 50
    REV.-A (2) push Tractor Method When the push tractor method is used with the rear entrance, the torque generated by the PF motor is transmitted to the push tractor gear through the PF motor pinion gear, paper advance reduction gear, and tractor reduction gear.
  • Page 51
    REV.-A Paper (Continuous) & \ /RollerGe~~ Motor, Paper Advance Reduction Gear Drive Roller Gear Push Tractor Push Tractor Gear Figure 2-6. Push Tractor Operation Using the Front Paper Entrance . ,.-…
  • Page 52
    REV.-A (3) pull Tractor Method The pull tractor advances paper in basically the same way as the push tractor. The push tractor is installed at the paper entrance and pushes the paper into the printer mechanism. The pull tractor, however, is installed at the paper exit and pulls the paper out of the printer mechanism.
  • Page 53
    REV.-A (4) push-pull Tractor Method : .’ The push-pull tractor method is a combination of the push and pull tractor methods. Two tractors are used to advance the paper: one at the front paper entrance and the other at the rear paper entrance. They operate simultaneously to push and pull the paper through the printer mechanism.
  • Page 54
    REV.-A Paper (Continuous) Pull Tractor Paper Drive Roller Pull Tractor Gear A Tractor Reduction Gear 1 PF Motor Pinion Gear . ’ < Motor, PF Paper Advance Reduction Gear — ‘ . Platen Gear Paper Drive Roller Gear Push Tractor Gear Push Tractor Figure 2-9.
  • Page 55
    REV.-A o . ; . — (5) Release Lever The release lever is used to select friction or tractor feeding or release the paper. When the release lever is set to the friction feed position, the paper guide rollers are pressed against the platen. When it is set to one of the tractor feed positions, this pressure is released and the paper guide rollers are separated from the platen.

  • Page 56: Paper Paths

    REV.-A 2.1.4.3 Paper Paths This section describes the various paths the paper follows through the printer mechanism. The various paper paths are divided into four groups depending on the entrance (toPt rear, bottomf or front) the PaPer is fed from” Note: The front PE (paper-end) detector is located in front of the printer mechanism and the rear PE detector is located behind the printer mechanism.

  • Page 57
    REV.-A (2) Rear entrance ~~:., Figures 2-13 and 2-14 show the paper paths fortractorfeeding using the rear entrance. The rear entrance can be used with any of the following paper feed methods: the push tractor feed method, the pull tractor feed method, or the push-pull tractor feed method.
  • Page 58
    REV.-A Paper (Continu Printhead ctor ear) Paper Guide Rollers Figure 2-15. Paper Path for Push-pull Tractor Feeding Using the Rear Entrance (3) Bottom entrance Figure 2-16 shows the paper path fortractorfeeding using the bottom entrance. The bottom entrance is used only for pull tractor feeding.
  • Page 59
    REV.-A ~:>1 (4) Front entrance Figures 2-17 through 2-20 show the paper paths for the front entrance. The front entrance can be used with any of the following paper feed methods: the friction feed method, push tractor feed method, pull tractor feed method, or push-pull tractor feed method.
  • Page 60
    REV.-A Paper (Continuous) Paper Drive Roller Detector, PE (Front) \ Lower Paper Guide Roller Figure 2-19. Paper Path for Pull Tractor Feeding Using the Front Entrance Paper (Continuous) Paper Drive Roller Lower Paper Guide Roller Detector, PE (Front) Push Tractor Figure 2-20.

  • Page 61: Ribbon Advance Mechanism

    REV.-A Ribbon Advance Mechanism 2.1.4 i… The ribbon is held between the ribbon advance roller (ribbon driving gear) and the ribbon pressure roller. ‘ “ ” When the carriage moves ontheshaft, the timing belt turns the belt driven pulley, andthetorque is transmitted to the ribbon driving gear through the train of gears.

  • Page 62: Power Supply Operation

    REV.-A 2.2 Power Supply Operation The FX-870/l 170 printer is powered by either of the two power supply boards: 120 VAC power supply board (BOARD ASSEMBLY, C076 PSB) or 220/240 VAC power SUPPIY board (BOARD ASSEMBLY, C076 pSE). These boards output the DC current necessary to drive the printer control circuits and the printer drive mechanism. Fuse F1 (2.5A/125 V for C076 PSB or 1.25 lV250 V for C076 pSE) is used to Protect the Power suPPIY circuit of each board in case of a short circuit.

  • Page 63: Power Supply Circuit Operation

    REV.-A 2.2.2 Power Supply Circuit Operation , , : , . ., < Figure 2-22 shows the power supply circuitry in block diagram form. When AC power enters the printer from an external power source, the filter circuit removes the noise. The AC voltage then undergoes full wave rectification and is smoothed to produce direct current.

  • Page 64
    REV.-A Primary Secondary Full Wave < Smoothing Switching + 3 5 VDC — Smoothing Rectification Circuit Circuit Circuit Circuit +5 v + +5 VDC Switching Regulator l—— ….Filter Circuit Over Current Control Circuit…

  • Page 65: Control Circuit Operation

    REV.-A 2.3 Control Circuit Operation The control circuit consists of two circuit boards: the C094 MAIN (the main control circuit board) and the C094 PNL (the control panel circuit board). This section describes the operation of these boards. 2.3.1 Control Circuit Operation Overview The CPU on the C094 MAIN is the 8-bit TM P90C041F microprocessor (9.83 MHz).

  • Page 66
    REV.-A Figure 2-24 shows the data flow from the host computer to the printhead. Data sent from the host computer is converted to image data and transmitted to the printhead through the gate array. — — — — — — — — — ~ Input buffer Print data…
  • Page 67
    REV.-A Table 2-4 lists the functions of the main components of the C094 MAIN. Table 2-5. Functions of Main Components of C094 MAIN Functions IC or Circuit Receives data from the host computer and loads it to the input buffer in RAM. TMP90C041F (2C1) Expands the input data held in the buffer to create image data.

  • Page 68: Reset Circuit

    REV.-A 2.3.2 Reset Circuit The control circuits are initialized when the RESET signal is issued. The reset operation occurs under these two conditions: (1) Power on reset Immediately after the power is turned on, +35 VDC is rapidly generated. Because it takes a moment for the voltage at ZD2 to reach +31.5 V, the voltage at the DISC terminal on the gate array does not reach +5 VDC until capacitor C24 is fully charged.

  • Page 69: Sensor Circuits

    REV.-A .> ~ Sensor Circuits 2.3.3 The FX-870/l 170 printer has the following sensors: CRHOME, pE (FRONT), pE (REAR), pG (platen 9ap), RELEASE LEVER, and HEAD TEMPERATURE. All the sensors are momentary switches, except the PE (REAR) sensor, which is a photo diode, and the HEAD TEMPERATURE sensor, which is a thermistor. In addition to the sensor circuits, the +35 V monitor circuit and the Vref circuit are also provided.

  • Page 70: Carriage Motor Drive Circuit

    REV.-A 2.3.4 Carriage Motor Drive Circuit The carriage motor drive circuit controls the CR motor. An open loop, constant current drive arrangement runs the CR motor. 2-2 and 1-2 phases are used to excite the motor. A 2-2 phase step is equivalent to a 1-2 phase step doubled.

  • Page 71: Paper Feed Motor Drive Circuit

    REV.-A 2.3.5 Paper Feed Motor Drive Circuit . , , . , The PF motor (a stepping motor) is used to advance the paper. The minimum advance rate is 1/216 inch. The motor is a 2-2 phase, constant voltage drive motor. CPU ports (P70 to P73) are used to control the PF motor. Phase data for the PF motor are outputted through these ports.

  • Page 72: Printhead Drive Circuit

    REV.-A 2.3.6 Printhead Drive Circuit The printhead drive circuit receives two types of signals; image data and the pulse length control signal. Image data is created in the CPU, transferred to the gate array, and latched to the printhead. The pulse length control signal is set by the CPU.

  • Page 73: E2Prom Control Circuit

    REV.-A E2PROM Control Circuit 2.3.8 “4 c’ Figure 2-31 shows the E2PROM control circuit. The E2PROM is non-volatile memory containing information . . such asthetop-of-form position. Because the E2PROM is a serial 1/0 device, the gate array converts the parallel data (sent from the host computer) into serial data.

  • Page 74
    REV.-A CHAPTER 3 DISASSEMBLY AND ASSEMBLY 3.1 Overview ………………….3-1 3.1.1 Precautions .
  • Page 75
    REV.-A LIST OF FIGURES Figure 3-1. Flowchart for Disassembling the Printer ……..3 -4 Figure 3-2.

  • Page 76: Overview

    REV.-A 3.1 Overview This section describes the information you need to know before you disassemble or assemble the printer. 3.1.1 Precautions Follow the precautions below before you disassemble or assemble the printer. WARNING Before disassembling, assembling, or adjusting the printer, disconnect the power supply cable from The power switch is wired in the the AC power outlet.

  • Page 77: Service Checks After Repair

    REV.-A 3.1.3 Service Checks After Repair Before you send the printer back to the customer, fill in the checklist in Table 3-3 to note the current state of the components. This checklist facilitates servicing and shipping. Table 3-3. Inspection Checklist for Repaired Printer Items to Check Is Check Required? Category…

  • Page 78: Screw Specifications

    FHI.-A 3.1.4 Screw Specifications for small parts, such as screws and washers. Tables 3-4 and 3-5 list these This chapter uses abbreviations abbreviations. Table 3-4. Abbreviations Used for Screws Part Name Abbreviation Cross-recessed Bind head B tight screw Cross-recessed Bind head C tight screw Cross-recessed Bind head N tight screw Cross-recessed Bind head S tiaht screw Table 3-5.

  • Page 79: Disassembly And Assembly

    REV.-A 3.2 Disassembly and Assembly This section describes the procedures for disassembling and assembling the main components of the ““ printer. In general, you can install a component in the printer by simply reversing the procedure for removing the component. Therefore, this chapter does not describe assembly procedures in most cases. If necessary, special notes on assembling or adjusting a component are given at the end of the description of each procedure.

  • Page 80: Pre-Disessembly Procedures

    REV.-A 3.2.1 Pre-disassembly Procedures Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. [STEP 11 Front Cover Figure 3-2. Removing the PAPER GUIDE ASSEMBLY Note: Remove the paper eject cover and the tractor unit by pushing and releasing the hooks at both sides.

  • Page 81: Removing The Panel Unit

    REV.-A 3.2.2 Removing the PANEL UNIT [STEP Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. (See Section 3.2.1.) [STEP 21 Push the two clips on the bottom of the panel unit and remove the PANEL UNIT. [STEP 3] Remove the flexible flat cable (FFC cable).

  • Page 82: Removing The Printhead

    REV.-A 3.2.3 Removing the PRINTHEAD Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. [STEP 1] (See Section 3.2.1.) the FFC cable from the PRINTHEAD. Remove the two CBS (M3X8) screws and [STEP 21 Remove the PRINTHEAD.

  • Page 83: Removing The Housing Assembly, Upper

    REV.-A Removing the HOUSING ASSEMBLY, UPPER 3.2.4 “.:?. Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. [STEP (See Section 3.2.1.) Remove the PANEL UNIT. (See Section 3.2.2.) [STEP 21 Remove the three CBC (M4X15) screws securing the HOUSING ASSEMBLY, UppER. (There are [STEp only two screws in the 80-column printer.) [STEP…

  • Page 84: Removing The Printer Mechanism

    REV.-A 3.2.5 Removing the PRINTER MECHANISM Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. [STEP 11 (See Section 3.2.1.) [STEP 21 Remove the PANEL UNIT. (See Section 3.2.2.) Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEP 31 [STEP 41 Remove the four CBB (M4X12) screws securing the PRINTER MECHANISM.

  • Page 85: Removing The Platen Assembly

    REV.-A 3.2.5.1 Removing the PLATEN ASSEMBLY [STEP 1] Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. (See Section 3.2.1.) [STEP 21 Remove the PANEL UNIT. (See Section 3.2.2.) — Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEP 31 [STEP 4] Remove the two CBS (M3X8) screws securing the COVER, PLATEN.

  • Page 86: Removing The Frame Assembly, Rear

    REV.-A 3.2.5.2 Removing the FRAME ASSEMBLY, REAR [STEP 11 Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. (See Section 3.2.1.) Remove the PANEL UNIT. (See Section 3.2.2.) [STEP 2] Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEP 31 Remove the PRINTER MECHANISM.

  • Page 87: Removing The Motor Assembly, Cr

    REV.-A 3.2.5.3 Removing the MOTOR ASSEMBLY, CR ..,., , Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. ‘ [STEP (See Section 3.2.1.) [STEP 2] Remove the PANEL UNIT. (See Section 3.2.2.) Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEP 3] Remove the face screw (M3X7) securing the MOTOR ASSEMBLY, CR.

  • Page 88: Removing The Motor Assembly, Pf

    REV.-A 3.2.5.4 Removing the MOTOR ASSEMBLY, PF Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. [STEP 11 (See Section 3.2.1.) [STEP Remove the PANEL UNIT. (See Section 3.2.2.) the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) Remove [STEP 31 [STEP 41…

  • Page 89: 3,2.5.5 Disassembling The Gear Train, Pf

    REV.-A 3.2.5.5 Disassembling the GEAR TRAIN, PF [STEP 1] Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. (See Section 3.2.1.) Remove the PANEL UNIT. (See Section 3.2.2.) [STEp 21 Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEp 31 Remove the PRINTER MECHANISM.

  • Page 90: Removing The Carriage Guide Assembly

    REV.-A 3.2.5.6 Removing the CARRIAGE GUIDE ASSEMBLY Remove the PAPER GUIDE ASSEMBL’f, top cover, front cover, paper eject cover and tractor unit. [STEP (See Section 3.2.1.) Section Remove PANEL UNIT. (See 3.2.2.) [STEP 21 Remove the PRINTHEAD. (See Section 3.2.3.) [STEP 31 Remove the HOUSING ASSEMBLY, UPPER.

  • Page 91
    REV.-A Assembly Note When attaching the TIMING BELT to the CARRIAGE ASSEMBLY, secure the TIMING BELT using the left and right clips of the CARRIAGE ASSEMBLY as shown below. Make sure there is no slack in the TIMING BELT. Clip TIMING BE Figure 3-16.

  • Page 92: Removing The Ribbon Drive (Rd) Assembly

    REV.-A 3.2.5.7 Removing the Ribbon Drive (RD) ASSEMBLY [STEP 11 Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. (See Section 3.2.1.) Remove the PANEL UNIT. (See Section 3.2.2.) [STEP 21 Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEP 31 Remove the PRINTER MECHANISM.

  • Page 93: Removing The Home Position (Hp) Detector

    REV.-A 3.2.5.8 Removing the Home Position (HP) DETECTOR .,.% ,> [STEP Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. (See Section 3.2.1.) Remove the clip of the DETECTOR, HP. Remove the detector. [STEp 21 Disconnect the LEAD, HP from the DETECTOR, HP.

  • Page 94: Removing The Front And

    REV.-A 3.2.5.10 Removing the Front and Rear Paper End (PE) DETECTORS PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. Remove the [STEP 11 (See Section 3.2.1.) Remove the PANEL UNIT. (SeeSection 3.2.2.) [STEP 2] Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEP 3] Remove the PRINTER MECHANISM.

  • Page 95: Removing The Detector, Release

    REV.-A 3.2.5.11 Removing the DETECTOR, RELEASE Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. [STEP (See Section 3.2.1.) UNIT. (See Section 3.2.2.) [STEP 21 Remove the PANEL Remove the HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) [STEP 31 MECHANISM.

  • Page 96: Arranging The Cables

    REV.-A 3.2.5.12 Arranging the Cables When you assemble the printer, arrange the cables as shown in Figure 3-22. >—1 PRINTER MECHANISM (Bottom) figure 3-22. Arranging the Cables 3-21…

  • Page 97: Disassembling The Tractor Unit

    REV.-A 3.2.5.13 Disassembling the Tractor Unit Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. [STEP (See Section 3.2.1.) [STEP 21 Release the two clips of the cog (17) from the tractor shaft. Remove the co9. [STEP 31 Remove the right tractor frame from the tractor shaft and the tractor guide shaft.

  • Page 98: Removing The Board Assembly, C094 Main

    REV.-A 3.2.6 Removing the BOARD ASSEMBLY, C094 MAIN Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, and tractor unit. [STEP 1] (See Section 3.2.1.) Remove the PANEL UNIT. (See Section 3.2.2.) [STEP 21 HOUSING ASSEMBLY, UPPER. (See Section 3.2.4.) Remove the [STEP 31 Remove the PRINTER MECHANISM.

  • Page 99: Removing The Board Assembly, C076 Psb/Pse

    REV.-A Removing the BOARD ASSEMBLY, C076 PSB/PSE 3.2.7 WARNING Do not touch the heat sink attached to the FET (Ql) when the printer is powered. If you touch the heat sink, you may suffer from electric shock. [STEP 1] Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover and tractor unit. (See Section 3.2.1.) [STEP 2] Remove the PANEL UNIT.

  • Page 100: List Of Figures

    REV.-A CHAPTER 4 ADJUSTMENTS 4.1 Adjusting the Printer Mechanism …………..4-1 4.1.1 Platen Gap Adjustment .

  • Page 101: Adjusting The Printer Mechanism

    REV.-A 4.1 Adjusting the Printer Mechanism This section describes the various adjustments required to keep the printer mechanism in optimum condition. 4.1.1 Platen Gap Adjustment If you rotated or reassembled the carriage guide shaft or the PARALLELISM ADJUSTMENT BUSHING, or if printing is abnormal, you must adjust the gap between the platen and the printhead.

  • Page 102: Bidirectional Alignment Adjustment

    REV.-A :,” .., LEVER, G, ADJUST Figure 4-1. PARALLEUSM ADJUSTMENT BUSHING 4.2 Bidirectional Alignment Adjustment This section describes how to adjust the bidirectional print position to ensure correct printing. 4.2.1 Overview of the Bidirectional Alignment Adjustment The FX-870/l 170 prints characters when the carriage moves from both left to right and right to left.

  • Page 103: Bidirectional Alignment Adjustment Prooedure

    REV.-A 4.2.2 Bidirectional Alignment Adjustment Procedure The FX-870/l 170 provides bidirectional alignment adjustment pro9ram. When load PaPer and run the program, the printer automatically feeds the paper and prints some patterns. You use the printout to adjust in the following steps. the printer’s bidirectional alignment as described Adjustment Operation while pressing the PAUSE, PAPER FEED, and FONT buttons…

  • Page 104: Troubleshooting

    REV.-A CHAPTER 5 TROUBLESHOOTING 5.1 Overview ………………….5-1 5.2 Repair byUnitReplacement .

  • Page 105: Overview

    REV.-A 5.1 Overview The FX-870/l 170 may exhibit different symptoms for the same problem. This makes troubleshooting difficult. This section provides simple and effective ways to facilitate troubleshooting. The following flowchart illustrates the main steps of the troubleshooting process. START I 5.3 5-13 I 5-1o…

  • Page 106
    REV.-A #2 o #3 o #4 o #5 o #6 O #7 o #8 O #9 o IWIRE ASSIGNMENT TEMP1 TEMPZ Coil Resistance : 16.5 * 1.6Q at 25°C (Bemeen each dot wire and common.) COM. COM. COM. [TERMINAL ASSIGN MENTI Note: COM.2 = #2, #4, #6 COM.8 = #7, #8, #9 COM.14 = #1, #3, #5…
  • Page 107
    REV.-A Table 5-2. Error Indication Cause Error Error Warning An error has occurred with Buzzer beeps: *** *** the carriage position. RAM abnormality. Memory error. Buzzer beeps: ** ** ** ** PROM abnormality. Memory error. Buzzer beeps: ** ** ** ** ** Paper out error.

  • Page 108: Repair Byunitreplacement

    REV.-A (, . . . ? ? > 5.2 Repair by Unit Replacement Most problems can be corrected by replacing the defective unit. First, identifi the problem from the printer symptoms you observe using the table below. Then, follow the instructions in the corresponding flowchart to correct the problem.

  • Page 109
    REV.-A Flowchart (1) abnormal operation at power on WARNING Do not touch the heat sink attached to the FET (Ql) when the printer is powered. If you touch the heat sink, you may suffer from electric shock. START Use the correct AC input voltage. Voltage range: 103.5-132 V (No fluctuation from the Voltage range: 198-264…
  • Page 110
    REV.-A Flowchart (2) carriage operation abnormal START CN3, 4, 5, 6, 7, 8, 9, and 13 Secure the connectors. connecting the BOARD ASSY., C094 MAI and the printer mechanism problem corrected? coil resistance correct (5 ohms +/- 7 at room ‘%.
  • Page 111
    REV.-A Flowhart (3) self test printing abnormal START & Set the platen gap adjust lever to O and perform the self test. (To start the self test, turn on the printer while holding down the PAPER FEED button.) Does the printer CN3, 4, 5, 6, 7,8,9, and 13 connecting the BOARD ASSY., C094 MAIN and the printer mechanism…
  • Page 112
    REV.-A c“ Flowchart (4) paper feeding abnormal (==) Load the paper correctly. Insert connector CN6 correctly. coil resistance correct Replace the PF motor. (63 ohms +/- 3 at room Repair the BOARD ASSY., smoothly when the printer C094 MAIN. I Refer to Section 5.5, Repairing the Printer Mechanism.
  • Page 113
    REV.-A operation abnormal Flowchati (5) control panel CN12 connecting the BOARD Insert connector ASSY., C094 PNL and the BOARD CN12 correctly. ASSY., C094 MAIN inserted Repair the BOARD ASSY., C094 MAIN. Replace the BOARD ASSY., C094 PNL. Replace the BOARD ASSY., C094 PNL.
  • Page 114
    REV.-A Flowchart (6) incorrect printing of data sent from host computer Note: The host computer is assumed to be operating normally. START Perform the self test (Turn on the printer while holding down the PAPER FEED button). See Section 5.3 self test correctly? through 5.5.

  • Page 115: Repairingthe Board Assembly, C076Psb/Pse

    REV.-A Repairing the Board Assembly, C076 PSB/PSE C076 PSB/PSE. It describes various This section provides instructions for repairing the BOARD ASSEMBLY, The checkpoint column provides proper waveforms, problems, likely causes, checkpoints, and solutions. resistance values, and other information for each component of the C076 PSB/PSE. The OPERATE button on the control panel turns on or off only the secondary power circuit, so the primary power circuit long as the printer IS connected to an AC power outlet.

  • Page 116
    Table 5-4. Repairing the BOARD ASSEMBLY, C076 PSB/PSE (Continued) Checkpoint Solution Problem Cause Replace The voltage of the Check the voltage waveforms at Q3. Q3, ICI, Pcl, PC2 D3, Icl, +35 V line is below Pcl, PC2 thespecifiedvalue. ZD51. CH1=O.2V TlME=2~s Replace Q2.
  • Page 117
    REV.-A 5-4. Table Repairing the BOARD ASSEMBLY, C076 PSB/PSE (Continued) Checkpoint Problem Cause Solution {efer to tht ;heck the +35 V line. rhe +35 V line is rhe+5Vlineisdead. terns ~ead. iescribed ]bove. {eplace C51 is dead. :heck the oscillation waveform (IC51 pin 5) and the C51.

  • Page 118: Repairingthe Boardassembly, C094Main

    REV.-A f“ . + 5.4 Repairing the Board Assembly, C094 MAIN This section provides instructions for repairing the BOARD ASSEMBLY, C094 MAIN. It describes various problems, symptoms, likely causes, checkpoints, and solutions. The checkpoint column provides proper waveforms, resistance values, and other information for each component of the C094 MAIN. Table 5-5.

  • Page 119
    REV.-A Table 5-5. Repairing the BOARD ASSEMBLY, C094 MAIN (Continued) Checkpoint Solution Symptom Cause Problem If the signal Check the oscillator signal (IC2CI pin 27 or pin The CPU is The CPU ~bnormal is not correct, 28). defective. )peration at does not replace operate )ower on.
  • Page 120
    REV.-A Table 5-5. Repairing the BOARD ASSEMBLY, C094 MAIN (Continued) Checkpoint Symptom Cause Solution Problem Replace IC4. Check the head pulse signal at pin 31 (input) Self test The printer IC4 is and pin 63 (output). defective. printing does not print the self abnormal test.
  • Page 121
    Table 5-5. Repairing the BOARD ASSEMBLY, C094 MAIN (Continued) Checkpoint Solution Cause Problem Symptom Replace ICI. ICI is Check the input signal (pin 2) and the output ~aper feed The printer does not defective. waveform (pin 3). abnormal. feed the paper at all (CH2:PIN 3) or the paper…

  • Page 122: Repairing The Printer Mechanism

    REV.-A Mechanism 5.5 Repairing the Printer ,~,. ..: for repairing the printer mechanism. It describes various problems, This section provides instructions symptoms, likely causes, checkpoints, and solutions. The checkpoint column shows the items to be checked, including the proper values to be set for each component of the printer mechanism. For replacement and adjustment instructions, see Chapter 3, Disassembly and Assembly, and Chapter 4, Adjustment.

  • Page 123
    REV.-A Table 5-6. Repairing the Printer Mechanism (Continued) Solution Checkpoint symptom Cause Problem C h e c k t h e c o m m o n Replace the FFC. The carriage common wires Self test printing moves, but the self- in the printhead FFC wires in the a b n o r m a l .
  • Page 124
    REV.-A Table 5-6. Repairing the Printer Mechanism (Continued) Solution Problem symptom Cause Checkpoint The ribbon Replace the Ribbon feed The ribbon does Remove the ribbon abnormality. cartridge is ribbon cartridge. not feed. cartridge. Then defective. rotate the ribbon f e e d r o l l e r manually to check that the ribbon…
  • Page 125
    REV.-A CHAPTER 6 MAINTENANCE Preventive Maintenance …………….. 6-1 Lubrication .

  • Page 126: Preventive Maintenance

    Do not use thinner, tnchloroethylene, or ketone-based solvents on the plastic components of the 6.2 Lubrication EPSON recommends that the printer be lubricated at the points shown in Figure 6-2. Table 6-2 lists each lubrication point and its recommended lubricant. All the lubricants have been tested extensively and found to comply with the requirements of this printer.

  • Page 127
    REV.-A Table 6-2. Lubrication Points Lubricant Ref. No. Lubrication Points Platen gap adjustment slots on the LE~ FRAME G-26 (excluding the two slots at the bottom) G-26 The arms and tab of the RD ASSEMBLY G-26 The shaft end of the ROLLER ASSEMBLY, DRIVE The ribbon drive gear train G-26 The OIL PAD in the CARRIAGE ASSEMBLY…
  • Page 128
    REV.-A Figure 6-1. Lubrication Points…

  • Page 129: List Of Tables

    REV.-A APPENDIX A.1 Connector Summary …………A-l . . m..-.-…m..-…m..~..-A-5 A.2 Circuit Diagrams ……..A.3 Circuit Board Component Layout .

  • Page 130: Printer Mechanism

    REV.-A A.1 Connector Summary Figure A-1 illustrates the interconnection of the primary components. Table A-1 summarizes the functions and sizes of the connectors. BOARD ASSEMBLY, C094 MAIN BOARD ASSEMBLY, C076 PSB/PSE — I D ETEC;”R’ P G1 IEF-1 DETECTOR, ‘E —…

  • Page 131
    REV.-A . . , . , Table A-1. C094 MAIN Board Connector Summary f’ Board Function Pins Connector BOARD ASSEMBLY, Host Computer C094 MAIN Optional Interface DETECTOR, PE (Front) 2 (Blue) DETECTOR, RL 2 (White) DETECTOR, PG 2 (Black) MOTOR ASSEMBLY, PF DETECTOR, HP 2 (Yellow) PRINTHEAD…
  • Page 132
    REV.-A See Table 1-14 for CNI (Centronics interface). Table A-3. CN3 (BOARD ASSEMBLY, C094 MAIN) Table A-2. CN2 (BOARD ASSEMBLY, C094 MAIN) Function No. 1/0 Signal Name Function No. 1/0 Signal Name Signal Ground +5 VDC Paper End, FRONT +5 VDC +5 VDC +5 VDC Table A-4.
  • Page 133
    REV.-A Table A-n. CN13 (BOARD ASSEMBLY, C094 MAIN) ., Table A-8. CN8 (BOARD ASSEMBLY, C094 MAINI — No. 1/0 Signal Name Function Function — CR Motor Phase A CR A Head Data 2 CR Motor Phase ~ CR ~ Head Drive Common C246 CR Motor Phase B CR B…
  • Page 134
    r’+ : > EN—l ‘=m -1 : ‘ I k ,, , _?…….:- Figure A-4, BOARD ASSEMBLY, C076 PSB Circuit Diagram (Annotated)
  • Page 138
    EPSON…

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FX-1170 Руководство по эксплуатации

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  • Страница 1

    FX-870/1170 SERVICE M ANUAL I Revision Level I EPSON ® @ Printed on Recycled Paper.[…]

  • Страница 2

    FCC Compliance Statement For American Users This equipment has been tested and found to comply with limits for a Class B digital device pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequen[…]

  • Страница 3

    — Copyright Notice All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electric, mechanical, photocopying, recording, or otherwise, without the written permission of Epson America, Inc. No patent liability is assumed with respect to use of the information cont[…]

  • Страница 4

    Precautions Precautionary notations throughout the text are categorized relative to 1) personal injury, and 2) damage to equipment. WARNING Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by a WARNING heading. CAUTION Signals a precaution w[…]

  • Страница 5

    How to Use this Manual This manual contains the information that a service provider needs to support the Epson FX-870/1170 printer. 0 It provides general information and specifications for the printer. 0 It tells you how to set up and configure the printer at a customer site. . If you encounter problems, the manual explains how to troubleshoot the […]

  • Страница 6

    4 Disassembly/Assembly This chapter lists the tools you need and gives the recommended procedure for removing and replacing components. 5 Adjustments, Maintenance, and Lubrication This chapter provides instructions for performing the platen gap adjustment and the bidirectional adjustment procedure. There is also a description of the lubricants requ[…]

  • Страница 7

    Handy Numbers for U.S. Dealers Epson Customer Resource Center (800) 922-8911 Epson Faxback System (310) 782-4214 Epson Bulletin Board System (310) 782-4531 Numbers and Addresses for Dealers Outside the U.S. Epson Canada, Ltd. 95 Mural Street Richmond Hill, Ontario LAB 3G3 ;htp (800) GO-EPSON . . (416) 881-5765 Epson Do Brazil Av. Pedroso De Morais […]

  • Страница 8

    Contents — Contents Chapter 1 Printer Features Options ……………………………………………………………………… 1-3 Hardware Specifications ………………………………………………………………… 1-3 Firmware Specifications ………………………………………………………………. 1-12 In[…]

  • Страница 9

    Contents Chapter 4 Disassembly and Assembly Precautions ………………………………………………………………………………… 4-1 Tools …………………………………………………………………………………………. 4-1 Service Checks After Repair ………………………………………………[…]

  • Страница 10

    Printer Features Chapter 1 Printer Features Options.. ………………………………………………………………………………………. 1-3 Hardware Specifications.. ………………………………………………………………. 1-3 Printing Method ……………………………………………………………..[…]

  • Страница 11

    Printer Features C094 MAIN Board Assembly (Main Control Board) …………….. 1-29 C094 PNL Board Assembly (Control Panel Circuit Board) ………………. 1-30 C076 PSB Board Assembly (Power Supply Circuit Board) ……………… 1-30 Printer Mechanism ……………………………………………………………… 1-31 Housing Asse[…]

  • Страница 12

    Printer Features Table 1-14. Optional Interface ………………………………………………….. 1-16 Table 1-15. Identifying Errors Using the LEDs ………………………….. l-19 Table 1-16. Group 1 Features …………………………………………………… 1-20 Table 1-17. Group 2 Features (ESC/P Mode) …………….[…]

  • Страница 13

    Printer Features 1 The FX-870/1170 combines advanced firmware, reliability, and affordability in a single light-weight unit. The major features of this printer are: l Upward compatibility with the FX-850/1050 and the FX-86e/286e l 380 cps (high-speed draft for both 80- and 136-column models) l 285 cps (draft pica), 342 cps (draft elite) l Advanced […]

  • Страница 14

    Printer Features 80-column model 1-2 136-column model Figure 1-1. External View of the FX-870/1170 Epson FX-870/1170[…]

  • Страница 15

    Printer Features options C806371 C806391 C806381 C806401 C800201 C800211 C814001 C814011 C823051 C823071 C823101 C823141 C823151 #8750 #8755 #8758 #8310 Single-bin cut-sheet feeder (80-column) Single-bin cut-sheet feeder (136-column) High-capacity cut-sheet feeder (80-column) High-capacity cut-sheet feeder (136-column) Tractor unit (80-column) Trac[…]

  • Страница 16

    Printer Features Dot matrix: 9 x 7 matrix (high-speed draft) 9 x 9 matrix (drafk) 18 x 23 matrix (NLQ) Paper Handling Feeding methods: Friction feed (front/top) Push tractor feed (front/rear) pull tractor feed (front/rear/bottom) Push-pull tractor feed (front/rear) Method to use for each type of paper: Fanfold: Tractor feed Cut sheets: Friction fee[…]

  • Страница 17

    Printer Features Precautions for Handling Paper Friction feed l Set the release lever to the FRICTION position. l Load the paper from the front or top entrance. l Do not use continuous paper. l Do not perform any reverse paper feeds within the top 0.34” (8.5 mm) area and bottom 0.88” (22 mm) area. l Do not perform reverse feeds greater than l/6[…]

  • Страница 18

    Printer Features Paper Specifications See Tables 1-2, 1-3, 1-4, 1-5, 1-6, and 1-7. Normal Environmental Conditions Recycled paper, envelopes, and labels require normal environmental conditions, which are the following: Temperature: 59-68”F(15-25°C) Humidity: 30 — 60 % RI-I Table 1-2. Specifications for Cut Sheets (Standard Paper) Width top inser[…]

  • Страница 19

    Printer Features Table 1-4. Specifications for Continuous Paper Width Thickness Weight Quality 4- 10” (101-254 mm) 80-column 4-l 6” (101-406 mm) 136~column 0.0025-0.012” (0.065-0.32 mm) 14-22 lb (45-70 kg) (52.3-82 g/m*) — single sheet 12-l 5 lb (34-50 kg) (40-58.2 g/m*) — each Standard or carbonless duplicating paper Recycled paper (at norma[…]

  • Страница 20

    Printer Features Table 1-7. Specifications for Roll Paper — Size 8.5 f 0.12” (216 A 3 mm) Thickness 0.0028-0.0035” (0.07-0.09 mm) Weight 14-22 lb (45-70 kg) (52.3-82 g/m*) Quality Standard paper Note: Roll paper is available optionally only for the 80-column model, and its diameter must not exceed 5” (127 mm). Printable Area Cut sheets top in[…]

  • Страница 21

    Printer Features Continuous paper c c 0 3 0 0 0 101-254 mm (4-10″): 80 columns 101-406 mm (4-16″): 136 columns > *1 >L+ 0 0 0 0 0 0 0 G c c WXYZ g J 0 -0 0 0 WXYZ g I 0 0 0 <I 0 0 c ABCD 0 0 0 0 0 0 C c Printable Area Figure 1-4. Printable Area for Continuous Paper l 1 13 mm (0.51”) or more when the paper width is 4” to 9.5?[…]

  • Страница 22

    Printer Features Roll paper (80-column model only) top insertion 216 2 3 mm (8.5 2 0.12”) — Printable Area WXYZ t WXYZ J Figure 1-5. Printable Area for Roll Paper *I 0.12” (3.0 mm) or more Note: Paper feed accuracy cannot be assured within 24 mm (0.94”) from the bottom edge of the paper (top insertion only). Ribbon Cartridge Ribbon Color Whhn[…]

  • Страница 23

    Printer Features Electrical Specifications See Table l-8. Table 1-8. Electrical Specifications for 120 V Model Rated voltage 120 VAC Input voltage range 103.5132 VAC Rated frequency range 50-60 Hz Input frequency range 49560.5 Hz . Rated current 1.8 A Power consumption Approx. 45 W ( 80 columns) Approx. 45 W (136 columns) (Self-test in draft mode, […]

  • Страница 24

    Printer Features Safety Approvals Safety standards UL1950 with D3 CSA!z2.2#220 RF1 * FCC class B Firmware Specifications Print Control Printing direction Text mode Bidirectional printing with logic seeking. (Unidirectional printing can be specified by software.) Bit image mode Unidirectional printing Character sets ASCII characters ESC/P mode — Ita[…]

  • Страница 25

    Printer Features Table 1-12. Print Speed Type of letters Print speed [cps] High-speed draft 380 (320) 11421 Draft pica 285 ii421 Draft elite 342 [1701 Condensed draft pica 243 v221 Emphasized draft pica 142 1711 NLQ normal pica 57 Notes: 1. The printing speed for high-speed drafl is reduced to the value in ‘I( )” with thick paper (over 0.007 in[…]

  • Страница 26

    Printer Features BUSY I ACKNLG DATA p . . . . . . . . . . . . . . . . -.- STROBE — t1 t1 t1 t2 t3 t,: 0.5 p-s (minimum) t2: 7 w (approximate) 5: 5 w (approximate) Figure 1-6. Data Transmission Timing Table 1-13. Connector Pin Assignments and Signal Functions Signal Return Pin Pin Signal No. No. Name Dir. Description 1 19 STROBE In STROBE pulse to r[…]

  • Страница 27

    Printer Features Table 1-13. Connector Pin Assignments and Signal Functions (Cont.) signal Return Pin Pin Signal No. No. Name Dir. Description 12 30 PE Out A HIGH signal indicates that the printer is out of paper. . 13 — — — Pulled up to +5 V through a 3.3K-ohm resistor. 14 — AUTO FEED In When this signal is LOW, paper is XT automatically fed one l[…]

  • Страница 28

    Printer Features should be shielded and connected to the chassis of the host computer and the printer, respectively. — 4. All interface conditions are based on TTL level. Both the rise and fall times of each signal must be less than 0.2 us. 5. Data transfers must not be carried out by ignoring the ACKNLG or BUSY signal. (Data transfers to this prin[…]

  • Страница 29

    Printer Features — Control Panel READY ,, OPL,, Figure 1-7. Control Panel Buttons OPERATE 1 lock type button PAUSE/TEAR OFF PAPER FEED I- (non-lock push-type buttons) FONT Indicators READY — (green) 3 LEDs FONT (Draft, Roman, Sans serif) — (green) CONDENSED — (green) Buttons PAUSE l When there is data in the input buffer: Selects printing or pause […]

  • Страница 30

    Printer Features FONT (ALT) — Selects NLQ Roman, NLQ Sans serif, Draft, and condensed ofthose 3 fonts in rotation: (DraR + Draft cond. 3 Roman + Roman cond. 3 Sam serif * Sam cond. + Draft + Draft cond. . …) (The factory setting is Draft, uncondensed font.) The selection is executed when the button is released and is stored in non-volatile memory[…]

  • Страница 31

    Printer Features Bin Selection for the Cut Sheet Feeder l When there is no paper in the paper path: Holding down the FONT (ALT) button while pressing PAUSE or PAPER FEED alternates bin selection if a double-bin cut-sheet feeder is attached and friction feed is selected. Paper Ejection Holding down the FONT (ALT) button and pressing PAPER FEED eject[…]

  • Страница 32

    Printer Features Default Settings -. You can set certain default parameters to be used at printer initialization. To change the parameters shown in Table l-16, Group 1 Features, follow the steps below: 1. Turn on the printer while pressing the FONT button. The printer beeps once and prints the current default settings on the paper loaded in the pap[…]

  • Страница 33

    Printer Features To change the settings shown in Table 1-17, Group 2 Features (ESC/P mode), or in Table l-18, Group 2 Features (7BM mode), follow the steps below: 1. Turn on the printer while pressing the FONT and PAUSE buttons. The printer beeps once and prints the current character table for either ESC/P or IBM mode on the paper loaded in the pap[…]

  • Страница 34

    Printer Features Table l-18. Group 2 Features (IBM Mode) FONT COND. READY LED LED LED OFF OFF ON OFF OFF BLINKS OFF ON OFF Character Table Character table PC437 (table 1) (standard) PC437 (table 2) PC865 (table 1) [ OFF 1 ON 1 ON PC865 (table 2) Notes: 1. For table 1, codes 80-9FH are control codes. (ESC 7 is set.) For table 2, codes 80-9FH are pri[…]

  • Страница 35

    Printer Features sheet feeder (CSF), the first sheet is used for scaling the sheet length. Then, the maximum number of printable lines is printed in the bottom line of the sheet and saved in non-volatile memory as the default page length. Page lengths are saved individually when a dual-bin CSF is in use. The self test prints out the following: l Ma[…]

  • Страница 36

    Printer Features Paper-out Detection If the paper-out sensor detects a paper out, the printer automatically enters a pause condition after feeding or printing several lines. When a paper-out is detected, load new paper properly and set the printer ready to print by pressing the PAUSE button. Auto Tear-off When the release lever is set to one of the[…]

  • Страница 37

    Printer Features position. If a paper out is detected before printing starts, the sheet is loaded automatically to the top-of-form position, without PAPER FEED being pressed. l Continuous paper loading and ejection (paper park) Move the release lever to REAR PUSH/FRONT PUSH position and load paper into the tractor unit. Press PAPER FEED to load the[…]

  • Страница 38

    Printer Features Printer Initialization The printer is initialized in the following cases. l When the printer is turned on. l When the INIT signal or CMREQ (optional I/F ) is input. When the printer is initialized, it performs the following functions: l The printhead returns to the leftmost position (carriage home). l The READY LED lights. l The pr[…]

  • Страница 39

    Printer Features -. Buzzer The buzzer beeps for 0.1 second at a time. These beep sounds are combined in various ways, as shown below, to indicate different meanings. In the following table, each ” l ” stands for one beep. Table 1-21. Buzzer Functions Status Sound Description 3EL code 0 Sounds when a BEL code is received. Zarriage trouble — — A […]

  • Страница 40

    Printer Features Main Components The components of the FX-870/1170 are designed for easy removal and replacement during maintenance and repair. The main components are: l C094 MAIN board assembly l C094 PNL board assembly l C076 PSB board assembly l Printer mechanism l Housing assembly The following figure shows the main components of the FX-870/11[…]

  • Страница 41

    Printer Features C094 MAIN Board Assembly (Main Control Circuit Board) Basically, the same board layout is used in both the 136~column model and the 80- column model. The CPU on this board controls all the main functions of the printer. It consists of a TMP90C041F 8-bit CPU, an E05A55YA gate array, an E2PROM, a PSRAM, a MASK ROM, motor drivers, and[…]

  • Страница 42

    Printer Features C094 PNL Board Assembly (Control Panel Circuit Board) This boardis the control panel ofthe F’X-870/1170, consisting of a power button, three function buttons, and three indicator LEDs. Figure 1-13. CO94 PNL Board Assembly (Control Panel Circuit Board) CO76 PSB Board Assembly (Power Supply Circuit Board) This board is composed of […]

  • Страница 43

    Printer Features Printer Mechanism The printer mechanism consists of a g-pin impact dot head, a carriage mechanism, a carriage motor, a paper feed mechanism, a paper feed motor, a ribbon feed mechanism, and various sensors. 136-column model 80-column model Figure l-16. Printer Mechanism Epson FX-870/1170 1-31[…]

  • Страница 44

    Printer Feature8 Housing Assembly The printer mechanism and all the boards are contained in a housing assembly that consists of the upper case and the lower case. 1-32 Figure 1-16. Housing Assembly Epson FX-870/1170[…]

  • Страница 45

    Printer Features Commonly Asked Questions and Answers This section contains facts that customers often want to know about this printer. The question-and-answer format is to make it easier for you to scan through the information. 1. Q. A. 2. Q. A. 3. Q. A. 4. Q. A. 5. Q. A. 6. Q. A. What are the FX-870 and FX-1170 printers? The FX-870 and FX-1170 pr[…]

  • Страница 46

    Printer Features 7. Q. A. Do the FX-870 and FX-1170 use the same ribbons as the FX-850 and FX- 1050? Yes. 8750 (fabric) for the FX-870 8755 (fabric) for the FX-1170 8758 ribbon only replacement pack (Never use ribbons for 24-pin printers. To extend printhead life, use only the Epson ribbons listed above.) 8. Q. What is the part number for the print[…]

  • Страница 47

    Printer Features 13. Q. How many paper paths are there for the FX-870 and FX-1170? A. The printers have 4 paper paths: Top feed Bottom feed Rear feed Front feed 14. Q. How is the tractor used for feeding with the FX-870/1170? A. The FX-870 and FX-1170 come with one tractor, which can be positioned for three different types of feeding: Front feed pu[…]

  • Страница 48

    Installation and Setup Chapter 2 Installation and Setup Procedures Site Requirements ………………………………………………………………………… 2-1 Removing the Packing Materials ……………………………………………………. 2-1 The Correct Power On Sequence ………………………………………….[…]

  • Страница 49

    Installation and Setup Procedures 2 . This chapter provides tips to help you select a site, set up, and test the printer. There is information on the using the parallel and serial interfaces, along with cabling configurations for serial transmission. The last portion of the chapter provides information customers need to know about this printer to e[…]

  • Страница 50

    Installation and Setup Running the Self-Test The self-test checks the printer mechanically and electronically to make sure it works properly. If the printer runs the self-test successfully, it means that everything is operational in the printer (with the possible exception of the interface circuit). To run the self-test, hold down the PAPER PEED bu[…]

  • Страница 51

    Installation and Setup The cable configuration for connecting the printer serially to a 25-pin (XT-type) computer connector is shown in the figure below. PtiIltff side 25pin to 25pin Serial Cable Computer 1 FGND, ,l FGND :~.-x,xl 5 CTS 4 ,5 CTS 6 DSR 4 +6 DSR Figure 2-2. Serial Cable Configuration to a 25Pin Computer Connector — Checking the Printe[…]

  • Страница 52

    Installation and Setup Then try sending a print screen again or type: DIR > PRN and press Enter at the MS-DOS prompt to print a listing of the current directory. — (If you needed to change the MS-DOS MODE command to reroute the computer’s output to the correct port, edit the system’s AUTOEXEC.BAT file to include this MODE command automatical[…]

  • Страница 53

    Troubleshooting Chapter 3 Troubleshooting Test Points …………………………………………………………………………………… 3-1 Error Codes ………………………………………………………………………………….. 3-5 Problem Isolation ………………………………………………………..[…]

  • Страница 54

    Troubleshooting 3 The information in this section can help you identify causes of printer problems and test the printer to isolate the part that needs to be replaced. The chapter also contains illustrations showing connector locations and sensor locations. Once you have read this chapter to determine what tests you need to run on the printer, see C[…]

  • Страница 55

    Troubleshooting Table 3-2. Sensor Test Points Sensor Test Method Connector (Set Meter to Ohms. Number Check with Printer Power Off.) Release Lever Place one lead on each pin. Change the release (CN4) lever position. Platen Gap Place one lead on each pin. Change the adjust (CW lever position. CR Home Place one lead on each pin. Move carriage to and […]

  • Страница 56

    Troubleshooting — Ho #8 0 #I7 0 #6 0 #I5 0. #4 0 #3 0 #2 0 #’ 0 [TERMINAL ASSIGNMENT] Note: The printhead is upside down in this illustration. [WIRE ASSIGNMENT] 1 Note: The commons correspond to the following printhead dot wires: J COM. 2 = #2, #4, #6 COM. 8 = #7, #8, #9 COM. 14=#1,#3,#5 Figure 3-1. Printhead Resistance Table 3-4. Printhead Test […]

  • Страница 57

    Troubleshooting Table 3-5. Printhead Driver Test Points Transistor Test Method Numbers (Set Meter to Diodes. Check with Printer Power Off.) Meter Reading Q2, Q4, Q5 Emitter and base are marked on the CO94 MAIN board. Consistent readings for all Q6, Q8, Q9 Check from base to collector, from base to emitter, and transistors, within YZ 20%. Ql 0, Ql 1[…]

  • Страница 58

    Troubleshooting Error Codes Table 3-7. Error Codes Error Warning Error Cause 3uzzer beeps: Carriage error Use flowchart 2 in this chapter to isolate moo.0 the problem. 3uzzer beeps: Memory error RAM abnormality. Y.0.0.. 3uzzer beeps: mnnnn Memory error E2PROM abnormality. 3uzzer beeps: Paper out error l Continuous paper has run out. moooooOenoeonnn[…]

  • Страница 59

    Troubleshooting Problem Isolation Most printer problems can be corrected by replacing the defective unit. First, identify the problem from the symptoms you observe using the table below. Then, follow the instructions in the corresponding flowchartto correct the problem. Table 3-8. Symptoms and Flowchart References Flowchart Symptom Possible Problem[…]

  • Страница 60

    Troubleshooting Table 3-8. Symptoms and Flowchart References (Continued) Flowchart Symptom Possible Problems or Solution When I try to load paper, the l There is a problem with one of the PE sensors. Use Table 3-2 printer feeds it back out. l The main board is not reading sensor output correctly. to test front and rear PE sensor. The printer contin[…]

  • Страница 61

    Troubleshooting Table 3-9. IdentiQing Serial Communications Errors (Continued) Problem Device timeout error Possible Cause l The computer is not set for infinite retries to the printer. Solution Type a MODE command from the MS-DOS prompt that includes the infinite retry parameter. For instance, if the serial interface card’s switches are in the f[…]

  • Страница 62

    Troubleshooting Chart 1. Printer Dead at Power On 0 START NO I Use correct AC voltage. (No fluctuation from AC range shown at left is permitted. No No No Dower on, does the new I (+35 V) at oin 10 I Measure the VP (+35 V) at pin 10 of CM2 on the C076 PSR board assembly. 1 “;e;c;dhe board assembly. I board. Measure the VL (+5 VI at pin 1 of CM2 on[…]

  • Страница 63

    Troubleshooting Chart 1. Printer Dead at Power On (Continued) Disconnect connector CM1 2 and power on printer. Yes initialize? R;g;y;N;ha board. Check motors and printhead. 1 END I” (If shorted, use Tables 3-5 and 3-6 to check drivers on C994 MAIN board, and if bad, replace main board at same time. 1 board. END * — 3-10 Epson FX-870/1170[…]

  • Страница 64

    Troubleshooting Chart 2. Carriage Does Not Move or Moves Abnormally kcuro thr on the CO94 U&IN connmtors. Manually wow the Check the gears. timing belt. and belt pulley for war, brmkagr, objects. and Coralgn Replace parts and lubrlcatr as nerdad. (km Chapter 5.1 Rapl8ca the Cg94 MAIN board. Repl8ce CR motor. If any coil Is shorted. use Table 3-[…]

  • Страница 65

    Troubleshooting Chart 3. Paper Does Not Feed or Feeds Abnormally n START YOS / No IR, TY*s No / il Replace PF motor. If my coil Is shortrd. use Table 3-6 to Cast PF drlvors on the CW4 WIN board. and If bad. raplace uln board at aaa tin. roslstanca of tha PF motor. Is It 63 l /- 3 I No 3-12 END * Epson FX-870/1170[…]

  • Страница 66

    Troubleshooting Chart 4. Poor Print Quality in Self-Test and turning on the prlntar. bo8rd connected Srcurs the connectors. Are any dots 1 q lsslng or Q drrgglng? No Perform thll No for bent or Chmck printhead rrslstance. If It Is not 16.5 ohms +/- 1.6 olmr raplax thr prlnthrad. If any prlnthmd pin Is shortrd. use Tablo 3-5 to chack drlwrs QZ — Q13[…]

  • Страница 67

    Troubleshooting Chart 5. Ribbon Not Feeding Properly START Q Rap I ace the ribbon mark. rlght and left, does ribbon See Figure 6-21 (page 6-18). Check gearing for broken or wore gears or foreign objects stuck In the gears. Repface eny gears necessmy. Lubricate as necessary. (See Chapter 5.1 And make sure gears are turning smoothly. -, 3-14 Epson FX[…]

  • Страница 68

    Troubleshooting Chart 6. Data fhm Host is Printed Incorrectly — Run self-tart. (Turn on prlntor *hIlo holding down the PAPER FEED button. 1 If self-tart Is g8rbl.d. th8 problr Is with the RDN or C194 RAIN bo8rd. Chrck daf8UltS shown in the self-test. Are they correct for the 8ppliC8tlOn? If not. sat th8m correctly. (Sm Def8Ult Settings In Chaptar 1[…]

  • Страница 69

    Troubleshooting Chart 7. Page Length/Margins Incorrect Run self-test and chSck the printer’s drf8ult settings 8gainst the settings In your 8pplic8- tlon SOftW8rS. printer. Th8 problv Is wlth th8 softw8ro YOS The C894 IL&IN bo8rd f-l “y bs b8d. (This Is mor8 r8rS than problems with softw8rS settings.) 3-16 Epson FX-870/1170[…]

  • Страница 70

    Troubleshooting Chart 8. Printout Double-Spaced the printer Is OK. At the MS-DOS prompt, type the following: NODE=LPTn:.6.P and press Enter. (“n” is the port you 8r* using. 1 Send another print screen. Disconnmt the cable. At the prlntar connector. you will see that the pin nmbers are Iabolod. Put a piace of tape over pin 14 to block thr sIgnal[…]

  • Страница 71

    Troubleshooting Connector Locations The layout diagram below shows the positions of connectors on the C094 MAIN board. ‘R / II’ PE Rear’ 3-18 Figure 3-2. Connector Locations Epson FX-870/1170[…]

  • Страница 72

    Troubleshooting Sensor Locations The illustrations below show the locations of sensors in the printer mechanism. Figure 3-3. Release Sensor Figure 3-4. Home Position Sensor Epson FX-870/1170 3-19[…]

  • Страница 73

    Troubleshooting Printer Mechanism Figure 3-5. Platen Gap Sensor Rear Paper Guide Assembly 3-20 Figure 3-6. Front and Rear PE Sensors Epson FX-870/1170[…]

  • Страница 74

    Troubleshooting Hex Quick Reference Table for ESC/P Commands Use the table below as an aid to read printer hex dumps. This table is for quick reference only. The user’s guide contains a detailed description of the control codes. Table 3-10. Hex. Codes for ESC/P Commands Hex. Dec. ASCII Command 07 08 09 OA OB oc OD OE OF 11 12 13 14 18 19 20 21 23[…]

  • Страница 75

    Troubleshooting Table 3-10. Hex. Codes for ESC/P Commands (Continued) — Hex. Dec. ASCII Command 3D 61 ESC = Set MSB to 0 3E 62 ESC > Set MSB to 1 3F 63 ESC?sm Reassign graphics mode 40 64 ESC @ Initialize printer 41 65 ESCAn Set n/72-inch line spacing 42 66 ESC B nn Set vertical tabs 43 67 ESC C n (0 n) Set page length in lines (in inches) 44 68[…]

  • Страница 76

    Troubleshooting Hex Quick Reference Table for IBM Commands Use the table below as an aid to read printer hex dumps. This table is for quick reference only. The user’s guide contains a detailed description of the control codes. Table 3-11. Hex. Codes for IBM Commands Hex. Dec. ASCII Command 07 07 08 08 09 09 OA 10 OB 11 oc 12 OD 13 OE 14 OF 15 11 […]

  • Страница 77

    Troubleshooting Table 3-11. Hex. Codes for IBM Commands (Continued) — I Hex. Dec. ASCII Command I 4E 78 4F 79 50 80 51 81 52 82 53 83 54 a4 55 a5 57 a7 58 aa 59 89 5A 90 5B 40 91 64 5c 92 5E 94 5F 95 ESCNn ESC 0 ESC P l/O ESCQn ESC R ESC S l/O ESC T ESC U l/O ESC W l/O ESCXnl r-12 ESC Y nl n2 ESC Z nl n2 ESC [ Q nn ESC nl n2 ESC h ESC- l/O Set sk[…]

  • Страница 78

    Disassembly and Assembly Chapter 4 Disassembly and Assembly Precautions ………………………………………………………………………………… 4-1 Tools ………………………………………………………………………………………….. 4-1 Service Checks After Repair ……………………………….[…]

  • Страница 79

    Disassembly and Assembly Figure 4-12. Removing the PF Motor Assembly …………………………… 4-13 Figure 4-13. Disassembling the PF Gear Train ……………………………. 4-14 Figure 4-14. Positioning the Release Lever for Insertion ………………. 4-14 Figure 4-15. Removing the Carriage Guide Assembly ………………….. 4[…]

  • Страница 80

    Disassembly and Assembly 4 — This section provides information you need to know to disassemble or assemble the printer. Precautions Read the precautions below before you disassemble or assemble the printer. WARNING Before disassembling, assembling, or adjusting the printer, disconnect the power supply cable from the AC power outlet. Failure to do s[…]

  • Страница 81

    Disassembly and Assembly Service Checks After Repair Before you send the printer back to the customer, fill in the checklist in Table 4-3 to note the current state of the components. This checklist facilitates servicing and shipping. Table 4-3. Inspection Checklist for Repaired Printer — QmwY Printer features Component Printhead Carriage mechanism[…]

  • Страница 82

    Disassembly and Assembly Screw Specifications This chapter uses abbreviations for small parts, such as screws and washers. Tables 4-4 and 45 list these abbreviations. Table 4-4. Abbreviations Used for Screws Abbreviation Part Name CBB Cross-recessed Bind head B tight screw CBC Cross-recessed Bind head C tight screw CBN . Cross-recessed Bind head N […]

  • Страница 83

    Disassembly and Assembly Notes for Unit Removal and Installation This section describes the procedures for disassembling and assembling the main components of the printer. Generally, you can install a component in the printer simply by reversing the procedure for removing the component. Therefore, this chapter does not describe assembly procedures […]

  • Страница 84

    Disassembly and Assembly Items to Remove Before Disassembling the Printer 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. Figure 4-2. Removing the Paper Guide Assembly Note: Remove the paper eject cover and the tractor unit by pushing and releasing the hooks at both sides. When remounting the[…]

  • Страница 85

    Disassembly and Assembly Removing the Panel Unit — 1. Remove the paper guide assembly, ribbon, top cover, f?ont cover, paper eject cover and tractor unit. fSee page 4-5.) 2.’ Push the two clips on the bottom of the panel unit and remove the panel unit. 3. Remove the flexible flat cable (FFC). Figure 4-3. Removing the Panel Unit Assembly Note The […]

  • Страница 86

    Disassembly and Assembly Removing the Printhead 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the two CBS (M3x8) screws from the printhead, lift the printhead up, and remove the FFC cable. 3. Remove the printhead. FFC Figure 4-5. Removing the Printhead Epson FX-870[…]

  • Страница 87

    Disassembly and Assembly Removing the Upper Housing Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the four CBC (M4x15) screws securing the upper housing assembly. (There are only three screws in the 80-column print[…]

  • Страница 88

    Disassembly and Assembly Removing the Printer Mechanism 1. 2. 3. 4. 5. 6. 7. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the upper housing assembly. (See page 4-8.) Remove the four CBB (M4x12) screws securing the printer mechanism[…]

  • Страница 89

    Disassembly and Assembly Removing the Platen Assembly -_ 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the two CBS (M3x8) screws securing the platen cover. 5. Disengage t[…]

  • Страница 90

    Disassembly and Assembly Removing the Rear Frame Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Remove the platen assem[…]

  • Страница 91

    Disassembly and Assembly Removing the CR Motor Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor -’ unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the face screw (M3x7) securing the CR motor assembly. After re[…]

  • Страница 92

    Disassembly and Assembty Removing the PF Motor Assembly — 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Set the release lever t[…]

  • Страница 93

    Disassembly and Assembly Disassembling the PF Gear Train 1. Remove the paper guide assembly, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 48.) 4. Remove the printer mechanism. (See page 4-Q.) 5. Remove the CR motor assembly. (Se[…]

  • Страница 94

    Disassembly and Assembly Removing the Carriage Assembly 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit, (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the printhead. (See page 4-7.) Remove the upper housing assembly. (See page 4-8.) Remove the printe[…]

  • Страница 95

    Disassembly and Assembly Assembly Note ‘- When attaching the timing belt to the carriage assembly, secure the timing belt using the 1eR and right clips of the carriage assembly as shown below. Make sure there is no slack in the timing belt. Clip Timing Figure 4-16. Attaching the Timing Belt 4-16 Epson FX-870/1170 -[…]

  • Страница 96

    Disassembly and Assembly Removing the Ribbon Drive (RD) Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Remove the plate[…]

  • Страница 97

    Disassembly and Assembly Removing the Home Position (HP) Sensor — 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the clip of the HP sensor. Remove the sensor. 3. Disconnect the HP lead from the HP sensor. Figure 4-18. Removing the HP Sensor Removing the Platen Gap ([…]

  • Страница 98

    Disassembly and Assembly Removing the Front and Rear Paper End (PE) Sensors 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Remov[…]

  • Страница 99

    Disassembly and Assembly Removing the Release Sensor 1. 2. 3. 4. 5. 6. 7. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the upper housing assembly. (See page 4-8.) Remove the printer mechanism. (See page 4-9.) Remove the platen asse[…]

  • Страница 100

    Disassembly and Assembly Arranging the Cables When you assemble the printer, arrange the cables as shown in Figure 4-22. El — — Printer Mechanism (Bottom) W Figure 4-22. Arranging the Cables Epson FX-8700170 4-21[…]

  • Страница 101

    Disassembly and Assembly Disassembling the Tractor Unit 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Release the two clips for cog (17) from the tractor shaft. Remove the cog. 3. Remove the right tractor frame from the tractor shaft and the tractor guide shaft. 4. Remove[…]

  • Страница 102

    Disassembly and Assembly Removing the C094 MAIN Board Assembly 1. 2. 3. 4. 5. 6. 7. 8. 9. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the upper housing assembly. (See page 4-8.) Remove the printer mechanism. (See page 4-9.) Discon[…]

  • Страница 103

    Disassembly and Assembly Removing the C076 PSB Board Assembly NOTE To remove the C076 PSB board assembly for replacement, you must use a special extractor tool, available from Epson Parts Order Services. After obtaining the special tool shown, follow the procedure below. I OneWai (Rivet Head) Screw Figure 4-26. Special Extractor Tool WARNING Do not[…]

  • Страница 104

    Disassembly and Assembly CBC (M3X8) CBB (M3X12) C076 PSB Board Figure 4-27. Removing the C076 PSB Board Assembly Assembly Epson FX-870/1170 4-25[…]

  • Страница 105

    Adjustments, Maintenance, and Lubrication Chapter 5 Adjustments, Maintenance, and Lubrication Adjusting the Printer Mechanism …………………………………………………… 5-1 Platen Gap Adjustment …………………………………………………………. 5-1 Bidirectional Alignment Adjustment …………………………[…]

  • Страница 106

    Adjustments, Maintenance, and Lubrication 5 Adjusting the Printer Mechanism This section describes the various adjustments required to keep the printer mechanism in optimum condition. Platen Gap Adjustment If you have changed the printhead, rotated or reassembled the carriage guide shaft, moved the parallelism adjustment bushing, or if printing is […]

  • Страница 107

    Adjustments, Maintenance, and Lubrication Left Frame 8ox Oriver -4/ ’ Adjustment Bushing Figure 5-2. Parallelism Acijustment Bushing 9. Rotate the adjusting bushing until the platen gap is large enough for a 0.36 mm thickness gauge, but too narrow for a 0.40 mm thickness gauge. 0.38 mm +I Id Figure 5-3. Platen Gap 10. Move the carriage until the […]

  • Страница 108

    Adjustments, Maintenance, and Lubriition Bidirectional Alignment Adjustment This section describes how to adjust the bidirectional print position to ensure correct printing. Overview of the Bidirectional Alignment Adjustment The FX-870/1170 prints characters when the carriage moves from both from left to right and from right to left. Therefore, the[…]

  • Страница 109

    Adjustments, Maintenance, and Lubrication Adjustment Operation 1. 2. 3. 4. 5. 6. 7. — Turn on the printer’s power while pressing the PAUSE, PAPER FEED, and FONT buttons simultaneously. The printer enters draft mode and prints the current adjustment value and four lines of the H character. (See Figure 5-3.) If the vertical lines are well aligned, […]

  • Страница 110

    Adjustments, Maintenance, and Lubrication Preventive Maintenance No preventive maintenance is required other than occasionally vacuuming the printer mechanism to remove dust and paper debris and regularly cleaning the case exterior with denatured alcohol. After cleaning the unit, check that it is properly lubricated as described under Lubrication, […]

  • Страница 111

    Adjustments, Maintenance, and Lubrication Table 5-2. Lubrication Points Ref. No. Lubrication Points Lubricant 1 Platen gap adjustment slots on the left frame (excluding G-26 the two slots at the bottom) 2 The arms and tab of the RD assembly G-26 d 3 The shaft end of the drive roller assembly G-26 4 The ribbon drive gear train G-26 5 The oil pad in […]

  • Страница 112

    […]

  • Страница 113

    Principles of Operation Chapter 6 Principles of Operation Printer Mechanism Operation ……………………………………………………….. 6-1 Printhead Mechanism ……………………………………………………………. 6-1 Carriage Mechanism ……………………………………………………………… 6-3 Pla[…]

  • Страница 114

    Principles of Operation Figure 6-8. Push-pull Tractor Operation Using the Rear Paper Entrance ……………………………………………….. 6-10 Figure 6-9. Push-pull Tractor Operation Using the Front Paper Entrance ………………………………………………. 6-11 Figure 6-10. Release Lever ……………………………..[…]

  • Страница 115

    Principles of Operation Table 6-6. Carriage Motor Drive Modes ……………………………………… 6-27 Table 6-7. Repairing the C076 PSB Board Assembly …………………… 6-31 Table 6-8. Repairing the C094 MAIN Board Assembly ……………….. . 6-34 Epson FX-870/1170 6-iii[…]

  • Страница 116

    Principles of Operation 6 This chapter explains the mechanical and electrical operations of the FX-870/1170. At the end of the chapter, there are tables for component-level diagnosis of the main logic board and the power supply board. Printer Mechanism Operation This section describes the FX-870/1170 printer mechanism and explains how the printer w[…]

  • Страница 117

    Principles of Operation 4. As soon as the current through the coil is switched off, the force induced in the coil rod stops. The plate then returns to its original position (the position assumed before the coil was energized) through the action of the plate spring. After the dot wire hits the platen, the rebounding force of hitting the platen works[…]

  • Страница 118

    Principles of Operation Carriage Mechanism The timing belt is connected to the lower side of the carriage. With the printhead installed, the carriage moves in either direction along the carriage guide shaft. The carriage (CR) motor, a stepping motor, drives the timing belt, which moves the carriage. The home position (HP) sensor detects the home po[…]

  • Страница 119

    Principles of Operation Platen Gap Adjustment The platen gap (the gap between the platen and the printhead) can be adjusted to allow the printer to use paper of different weights or thicknesses. When the platen gap adjust lever is moved forward or backward, the carriage guide shaft rotates. This rotation moves the carriage either toward or away fro[…]

  • Страница 120

    Principles of Operation Paper Handling Mechanisms During normal operation, paper is fed to the printer, advanced to the specified position, and ejected from the printer. These paper handling operations are performed by various paper handling mechanisms, such as the tractors, platens, rollers, and gears. This section describes the printer’s paper […]

  • Страница 121

    Principles of Operation Paper Advance Mechanisms — — This section describes how the friction advance and tractor advance mechanisms work to advance the paper through the printer. Friction Advance Method The paper is held between the platen and paper guide rollers and between the paper tension roller and paper tension unit cover . The paper feed (PF[…]

  • Страница 122

    Principles of Operation Push Tractor Method When the push tractor method is used with the rear entrance, the torque generated by the PF motor is transmitted to the push tractor gear through the PF motor pinion gear, paper advance reduction gear, and tractor reduction gear. When the PF motor pinion gear turns in the direction of the black arrow, the[…]

  • Страница 123

    Pthcipk of Operation — Paper (Continuous) Paper Tension Roller Paper Tension Roller Gear / Platen Gear PF Motor P&h Tractor ‘Push Tractor Gear Figure 6-6. Push Tractor Operation Using the Front Paper Entrance 6-8 — Epson FX-870/I 170[…]

  • Страница 124

    Principles of Operation Pull Tractor Method The pull tractor advances paper in basically the same way as the push tractor. The push tractor is installed at the paper entrance and pushes the paper into the printer mechanism. The pull tractor, however, is installed at the paper exit and pulls the paper out of the printer mechanism. As the result, the[…]

  • Страница 125

    Principles of Operation Push-pull Tractor Method The push-pull tractor method is a combination of the push and pull tractor methods. Two tractors are used to advance the paper: one at the front paper entrance and the other at the rear paper entrance. They operate simultaneously to push and pull the paper through the printer mechanism. Figure 6-8 il[…]

  • Страница 126

    Principles of Operation I Paper Drive Roller / ctor Reduction PF Motor Pinion Gear Gear PF Motor PaDer Advance Reduction Gear l . l . — ’ Platen Gear Paper Drive Roller Gear ush Tractor Gear Push Tractor Figure 6-9. Push-pull Tractor Operation Using the Front Paper Entrance Epson FX-870/1170 6-11[…]

  • Страница 127

    Principles of Operation The Release Lever The release lever is used to select friction or tractor feeding or to release the paper. When the release lever is set to the friction feed position, the paper guide rollers are pressed against the platen. When it is set to one of the tractor feed positions, this pressure is released and the paper guide rol[…]

  • Страница 128

    Principles of Operation Paper Paths This section describes the various paths the paper follows through the printer mechanism. These paper paths are divided into four groups, depending on the entrance the paper is fed from (top, rear, bottom, or front). Note : The front paper-end (PE) sensor is located in front of the printer mechanism and the rear […]

  • Страница 129

    Prlnclples of Operatbn Rear Entrance Figures 6-13 and 6-14 show the paper paths for tractor feeding using the rear entrance. The rear entrance can be used for any of the following paper feed methods: push tractor feed, pull tractor feed, or the push-pull tractor feed. When the rear entrance is used, the rear PE sensor senses when paper is out. Pape[…]

  • Страница 130

    Principles of Operation Paper (Continuous) Printhead Paper Guide Rollers Figure 6-15. Paper Path for Push-pull Tractor Feeding Using the Rear Entrance Bottom Entrance Figure 6-16 shows the paper path for tractor feeding using the bottom entrance. The bottom entrance is used only for pull tractor feeding. When the bottom entrance is used, the fron[…]

  • Страница 131

    Principles of Operation Front Entrance — Figures 6-17 through 6-20 show the paper paths for the front entrance. The front entrance can be used with any of the following paper feed methods: friction feed, push tractor feed, pull tractor feed, or push-pull tractor feed. When the front entrance is used, the front PE sensor senses when paper is out. Pa[…]

  • Страница 132

    Principles of Operation — Paper (Continuous) Front PE Sensor Lower Paper Guide Roller Figure 6-19. Paper Path for Pull Tractor Feeding Using the Front Entrance Paper Drive Roller Front PE Sensor Tower Paper Guide Roller Push Tractor Figure 6-20. Paper Path for Push-pull Tractor Feeding Using the Front Entrance Epson FX-870/1170 6-17[…]

  • Страница 133

    Principles of Operation Ribbon Advance Mechanism The ribbon is held between the ribbon advance roller (ribbon driving gear) and the ribbon pressure roller. When the carriage moves on the shaft, the timing belt turns the belt driven pulley, and the torque is transmitted to the ribbon driving gear through the gear train. The ribbon driving gear rotat[…]

  • Страница 134

    Principles of Operation Power Supply Operation The FX-870/1170 printer is powered by a 120 VAC power supply board (C076 PSB board assembly). This board outputs the DC current necessary to drive the printer control circuits and the printer drive mechanism. Fuse Fl(2.5 A/125 V) is used to protect the power supply circuit of the board in case of a sho[…]

  • Страница 135

    Pfinciples of Operation The +5 VDC voltage-overload protection circuit cuts the +5 VDC line output ifthe voltage exceeds +7 VDC. It stops the operation of the switching circuit and then the output of +35 VDC voltage. The +35 VDC line has a voltage-overload protection circuit and a voltage drop protection circuit. The +35 VDC voltage-overload protec[…]

  • Страница 136

    a Filter Circuit AC input Principles of Operation Secondary — I I I Full Wave Pectification — Smoothing — $M$ing Smoothing Circuit Circuit . . i I Circuit I I , t +5v Switching Regulator .~~~-~~~~~-~~~~~ +5v Over Current Control Circuit —————- +5v _ Photo- + +35 V Line coupler Detector Circuit I ZD51 +t +35 V Line Voltage Overload Prote[…]

  • Страница 137

    Principles of Operation Control Circuit Operation The control circuit consists of two circuit boards: the CO94 MAIN (main control circuit board) and the CO94 PNL (control panel circuit board). This section describes the operation of these boards. Control Circuit Operation Overview The CPU on the CO94 MAIN is an 8-bit TMP9OCO41F microprocessor (9.83[…]

  • Страница 138

    Principles of Operation Figure 6-24 shows the data flow from the host computer to the printhead. Data sent fkom the host computer is converted to image data and transmitted to the printhead through the gate array. CPU I Host computer Image data transfer L I Gate Array (EOSABGYA) + RAM Input buffer Figure 6-24. Data Flow Epson FX-87W1170 6-23[…]

  • Страница 139

    Principles of Operation Table 6-5 lists the fimctiona of the main componente of the CO94 MAIN. Table 6-5. Functions of Main Components of CO94 MAIN IC or Circuit Functions TMP90C041 F (2Cl) Receives data from the host computer and loads it to the input buffer in RAM. Expands the input data held in the buffer to create image data. Loads the image da[…]

  • Страница 140

    Principles of Operation Reset Circuit The control circuits are initialized when the RESET signal is issued. The reset operation occurs under these two conditions: 1. Power on reset Immediately after the power is turned on, +35 VDC is rapidly generated. Because it takes a moment for the voltage at ZD2 to reach +31.5 V, the voltage at the DISC termin[…]

  • Страница 141

    Principles of Operation Sensor Circuits The FX-8’70/1170 printer has the following sensors: CRHOME, PE (FRONT), PE (REAR), PG (platen gap), RELEASE LEVER(RL), and HEAD TEMPERATURE. All the sensors are mechanical switches, except the rear PE sensor, which is a photo diode, and the HEAD TEMPERATURE sensor, which is a thermistor. — In addition to th[…]

  • Страница 142

    Principles of Operation Carriage Motor Drive Circuit The carriage motor drive circuit controls the CR motor. An open loop, constant-current drive arrangement runs the CRmotor. 2-2 and 1-2 phases are used to excite the motor. A 2-2 phase step is equivalent to a 1-2 phase step doubled. Table 6-6 describes the motor drive modes. The CR motor drive cir[…]

  • Страница 143

    Principles of Operation Paper Feed Motor Drive Circuit The PF motor, a stepping motor, advances the paper at a minimum advance rate of l/216 inch. This motor is a 2-2 phase, constant-voltage, drive motor. CPU ports (P70 tc P73) are used to control the PF motor. Phase data for the PF motor is output through these ports. PFA to PFB are turned on or o[…]

  • Страница 144

    Principles of Operation Printhead Drive Circuit The printhead drive circuit receives two types of signals: image data and the pulse length control signals. Image data is created in the CPU, transferred to the gate array, and latched to the printhead. The pulse length control signal is set by the CPU. The pulse length is adjusted referring to the vo[…]

  • Страница 145

    Principles of Operation E 2 PROM Control Circuit Figure 6-31 shows the E2PROM control circuit. The E2PROM is non-volatile memory containing information, such as the top-of-form position. Because the E2PROM is a serial I/O device, the gate array converts the parallel data (sent fiorn the host computer) into serial data. — SCL B5A66YA (IC4) CPU (IC2C[…]

  • Страница 146

    Principles of Operation Component Repair Information (for Dealers Outside the U.S.) This portion of the manual provides additional information for servicers outside the U.S. who need to make repairs to components on the circuit boards. (U.S. service technicians can ignore these pages.) Repairing the C076 PSB Board Assembly This section gives instru[…]

  • Страница 147

    Principles of Operation Table 6-7. Repairing the C076 PSB Board Assembly (Continued) Problem cause Checkpoint Solution The voltage of the Q3, ICl, PCl, Check the voltage waveforms at Q3. Replace Q3, t35 V line is below PC2 or ZD51 is ICl, PCl, the specified value. bad. PC2 or zD51. Q2 is bad. Check the voltage waveforms at Q2. Replace Q2. 6-32 Epso[…]

  • Страница 148

    Principles of Operation Table 6-7. Repairing the C076 PSB Board Assembly (Continued) Problem CalIS@ Checkpoint Solution he +5 V line is The +35 V line is Check the +35 V line. Refer to the ad. bad. items described above. IC51 is bad. Check the oscillation waveform (IC51 pin 5) and the Replace switching waveform (IC51 pin 8). IC51. Q51 or Q52 is bad[…]

  • Страница 149

    Principles of Operation Repairing the C094 MAIN Board Assembly — This section gives instructions for repairing the C094 MAIN board and describes various problems, symptoms, likely causes, checkpoints, and solutions. The checkpoint column shows proper waveforms, resistance values, and other information for each component of the C094 MAIN board. Tabl[…]

  • Страница 150

    Principles of Operation Table 6-8. Repairing the C094 MAIN Board Assembly (Continued) Problem Symptom Cause Checkpoint Solution Abnormal The CPU operation at does not power on. operate properly. The CPU is Check the oscillator signal (IC2Cl pin 27 or If the signal is defective. pin 28). not correct, replace IC2Cl. Otherwise, replace CRl. Carriage T[…]

  • Страница 151

    Principles of Operation Table 6-8. Repairing the C094 MAIN Board Assembly (Continued) Problem Symptom Cause Checkpoint Solution Self-test The printer IC4 is Check the head pulse signal at pin 31 (input) Replace IC4. printing does not print defective. and pin 63 (output). abnormal the self-test. Self-test printing abnormal. A particular dot fails to[…]

  • Страница 152

    Principles of Operation Table 6-8. Repairing the C094 MAIN Board Assembly (Continued) Problem Symptom Cause Checkpoint Solution Paper feed The printer ICl is Check the input signal (pin 2) and the output Replace ICl abnormal. does not feed defective. waveform (pin 3). the paper at all or the paper feed is irregular. Incorrect Data is Either IC4 or […]

  • Страница 153

    Reference Materials Chapter 7 Reference Materials Connector Summar y ……………………………………………………………………… 7-1 Circuit Diagram s ………………………………………………………………………….. 7-5 Circuit Board Component Layout s ……………………………………………..[…]

  • Страница 154

    Reference Materials 7 Connector Summary Figure 7-1 illustrates the interconnection of the primary components. Table 7-1 summarizes the functions and sizes of the connectors. AC IN 7 4 CNl (CN2k CO76 PSB BOARD ASSEMBLY L I CO94 MAIN BOARD ASSEMBLY (1 1 CN4 t 1 CN6 1 +iiq 1 CN13 1 I I + I PRINTER MECHANISM I PF MOTOR ASSEMBLY t I CO94 PNL BOARD ASSEM[…]

  • Страница 155

    Reference Materials Table 7-1. CO94 MAIN Board Connector Summary Board CO94 MAIN Board Assembly Connector CNl CN2 CN3 CN4 CN5 CN6 CN7 CN8 CN9 CN12 CN13 CN14 Function Host Computer 36 Optional Interface 36 Front PE Sensor 2 (Blue) Release (RL) Sensor 2 (White) Gap (PG) Sensor 2 (Black) PF Motor Assembly 6 Home Position (HP) Sensor 2 (Yellow) Printhe[…]

  • Страница 156

    Reference Materials See Table 1-14 for CNl (Centronics interface) signal functions and pin assignments. Table 7-2. CN2, Optional I/F Table 7-3. CN3, Front PE Sensor (CO64 MAIN Hoard Assembly) (CO94 MAIN Hoard Assembly) No. I I l/O Signal Name Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36[…]

  • Страница 157

    Reference Materials I W. l/O Signal Name Function 1 — +5 +5 VDC 2 0 READY READY LED 3. 0 STAT STAT LED ( Not equipped) 4 0 FONT FONT LED 5 0 COND ‘CONDENSED LED 6 I PAUSE PAUSE Button 7 I FONT FONT Button 8 I PFEED PAPER FEED Button 9 I OPERA OPERATE Button 10 — GND Signal Ground 7-4 Epson FX-870/1170 Table 7-8. CNS, Printhead Table 7-11. CN13, C[…]

  • Страница 158

    Reference Materials Circuit Diagrams 0,‘ B:,& OTC1132 sE:IOK I A /I/II/II III ,,,, I Il/IIl/II I I I I I I ’ II Head Conrrol /IIm O,‘” Ill i — Pf Molar Control CNL LE<ER ( CYS G&P ( CN3 PEFRNT ( CNS PERAEFI ( Pf Motor Ower Figure 7-2. C094 MAIN Board Assembly Circuit Diagram (Annotated) 7-5 Epson FX-870/1170[…]

  • Страница 159

    Reference Materials . I = — — — — — — Figure 73. C094 MAIN Board Assembly Circuit Diagram 7-6 Epson FX-87CY1170[…]

  • Страница 160

    Surge Current ProtectIon 2.5A,125V CNI L IOO-12OVAC C6 0 I I 0 O.,u,‘AC250V FG , R4 o.3gs R7 16K _ iV Over I CB T 220Op/lKV _ 3 ZJI X1 : HEAT SINK I P *, 051 ‘-9; FMP-G125 t5V DC Reourator Clrcult LPZOl-2R5SO R RW II tection II C58 O.Olu 1 I 7 ct-42 PSC +35V/O.?A -I F F , +SV/I.OA 3 Psc PO. 7A F F , +5V/l.OA c57 1 L7OOp/ IKV !Or 7 FG C076 PSB P[…]

  • Страница 161

    CN2 PSC CB T’ I PT-0’ THI Bohm/25C C6 0 II I 4, 0.1 u/ACZ%,V It- = F-G ,I- !, (L2) 2200p/lKV _ 3’ R5 = lOK/ 2w Cl2 — 01 L70pRKV AGOI _ 2. C r CSl 33ooun1 5ov C52 33oou 5ov a_ C56 — 22oop 1 KV z%p 22”dP ‘-T t- i FG ELF160290M -2- O.Z2u/AC250V 1 c.57 1 A7oOp/ 1KV ? FG I- Fl 2.5A,‘125V *l : HEAT SINK !N! 100-120VAC CO76 PSB Power Supply […]

  • Страница 162

    Reference Materials CNI GND *OPERA 0 SW4 , *PAPER FEED t&——h “’ 0 *FONT rPAUSE/l-OFF CONDENSED FONT STATUS o7 *SW3 0 o6 ij-L SW2 0 5 LED3 N 0 4 1/1 LED2 N I 2 L/I LED1 N 41 Note: The STATUS LED is not implemented in this model. Figure 7-6. CO94 PNL Board Assembly Circuit Diagram Epson FX-870/1170 7-9[…]

  • Страница 163

    Reference Materials Circuit Board Component Layouts PF Motor e.m PF Motor Parallel hlterface /CNl PG Sensor c cN5 Ett CN7 — PE Rear/ %i / PE Front EY Y I I Printhead P&iead zeyi Drivers EN3”” CN12 CN2 — Figure 7-7. CO94 MAIN Board Assembly Component Layout !z?Rm 7-10 Epson FX-870/1170[…]

  • Страница 164

    Reference Materials n EEm EPS-I I MODEL 1 Figure 7-8. CO76 PSB Board Assembly Component Layout Epson FX-870/1170 7-11[…]

  • Страница 165

    Reference Materials 6 I.202 lmal pJ z- fi L2DJ cl LLD I cl—-, -I I I : : CO94 PNL Sw2 ASSY 2006160 00 I I q 0 FL+ i 16 I A,—4 SW4 SW3 SWI CMK- 54×1 Am Note: The STATUS LED is not implemented in this model. Figure 7-9. CO94 PNL Board Assembly Component Layout 7-12 Epson F&870/1 170[…]

  • Страница 166

    Reference Mater& Outline Drawings I r — I 380 ’ I I I I i I Figure 7-10. FX-870 Case Outline Drawing Epson FX-870/1170 7-13[…]

  • Страница 167

    Reference Materials I L I r-r-=- I I r- 01 — — — z — Figure 7-11. F’X-1170 Case Outline Drawing 7-14 — Epson FX-870/1170[…]

  • Страница 168

    Index Symbols +35 V 3-1, 6-19, 6-25, 6-28, 6-29 line 6-31, 6-32 monitor circuit 6-26 detector 6-19 +5 V 3-1, 3-4, 6-19, 6-25, 6-28 line 6-33 136-column 1-10, 4-8, 5-2 80-column 1-8,4-8,5-2 A abbreviations 4-3 Abicomp 1-21 AC power 3-1, 4-1, 6-19 outlet 2-1, 6-31 source 6-20 accessories 1-34 ACKNLG 1-13 addresses vii adjust 4-1 lever 1-24, 3-2, 4-11[…]

  • Страница 169

    Index blinking 1-19 bond paper 1-7 bottom entrance 6-9, 6-15 box driver 5-1 BRASCII 1-21 buffer 1-1, 1-13, 1-15, 1-17, 1-22, 1-24, 1-26, 6-24 full printing 1-24 bushing 5-1 BUSY 1-13, 6-29 /READY 3-8 buttons 1-17 buzzer 1-27, 3-6, 6-2 C C076 PSB board 1-28, 1-30, 4-23, 4-24, 6-19, 6-31, 6-32, 6-33 C094 MAIN board 1-28, 1-29, 3-6, 3-7, 3-18, 4-9, 4-[…]

  • Страница 170

    Index common 3-2, 3-3 communications errors 3-7, 3-8 component 1-28, 6-34 layouts 7-10 repair 6-31 condensed 1-12, 1-17, 1-18, 1-19 connector 1-14, 3-1, 3-3, 4-9, 4-12, 4-23, 4-24, 7-2 locations 3-18 summary 7-1 continuity 3-1, 3-4 continuous paper 1-1, 1-5, 1-9, 1-17,6-5 control circuit 6-22 codes 3-21 through 3-24 panel 1-17, 1-22, 1-23, 1-28, 1-[…]

  • Страница 171

    Index dot 6-1 wires 3-3 double-space 3-7, 3-17 draft 1-13, 1-18, 1-19,5-4 drive circuit 6-24, 6-27, 6-28,6-29 roller assembly 5-6 signals 6-1 voltage 6-1 driver 3-2, 3-4, 3-6 carriage motor 3-4 paper feed motor 3-4 printhead 3-4 selections 1-33 driving wires 6-1 dust 5-5 duty 1-24 cycle 1-11, 2-4 E ETROM 1-27, 2-1, 3-5, 3-7,5-3, 6-24 control circui[…]

  • Страница 172

    Index font 1-12, 1-17, 1-18, 1-19, 1-20, 1-21, 1-22, 5-4 form feed 1-24 frame 4-11 ground connector 2-2 left 4-11, 4-18 right 4-11 France 1-21 frequency range 1-11 friction 6-5, 6-6 feed 1-4, 1-5, 6-13, 6-16 mechanism 1-5 front cover 4-5 entrance 6-7, 6-8, 6-10, 6-11,6-16, 6-17 feed 1-35 insertion 1-8 PE sensor 1-24, 3-2, 3-20,4-19,6-13,6-15, 6-16,[…]

  • Страница 173

    Index pulse signal 6-36 temperature 6-26 thermistor 1-19,3-5 heat 6-2 sink 4-24,6-31 hex dumps 1-23,3-21, 3-23 codes 3-21 through 3-24 high capacity cut-sheet feeder 1-3 duty printing 1-24 speed draft 1-1, 1-13 voltage error 1-19,3-5 home position 1-26,2-1,3-2,3-6,3-7,3-19,4-18,6-3,6-4,6-26,7-3 sensor 1-26,3-2, 3-6,3-7,3-19, 4-18, 6-26, 7-3 hooks 4[…]

  • Страница 174

    Index italic 1-21, 3-8 Italy 1-21 L labels 1-4, 1-5, 1-6 layout 1-29 diagram 3-18, 7-10 LEDs 1-19, 2-1 left frame 4-11, 4-18 length 1-6 lever adjust 1-24, 3-2,4-11, 5-1, 6-4 release 1-5, 1-24, 1-27, 3-2, 3-5, 4-13, 4-14, 5-1, 6-6, 6-7,6-12,6-26 life 1-33 line spacing 1-4, 1-26 lines 1-23 load paper 3-7 loading 1-24 position 1-18, 1-27 logic level 1[…]

  • Страница 175

    Index N NLQ 1-13, 1-18, 1-19, 5-4 noise 1-15, 6-19 non-volatile memory 1-18, 1-20, 1-22, 1-23, 1-26, 6-30 null modem cable 2-2 O ohms 3-2, 3-3 oil 5-5 pad 5-6 open 3-2, 3-4 OPERATE 1-17, 3-1 operating modes 1-33 optional I/F 1-16,7-3 boards 1-1, 1-3, 3-7,3-8,4-23 oscillation waveform 6-33 oscillator 6-35 oscilloscope 4-1 outlet 2-1, 6-31 outline dr[…]

  • Страница 176

    Index tension roller 6-6, 6-7 gear 6-6 unit 1-5,6-9 thickness 1-25 width 1-8 parallel 1-34, 3-6 cable 2-2 interface 1-3, 1-13, 2-1, 6-29 parallelism adjustment bushing 3-6, 4-11, 5-1, 5-2,5-3 parameters 1-22 parity 2-4, 3-7 Parts Order Services 4-24 path l-l, 6-13, 6-14, 6-15 PAUSE 1-17, 1-18, 1-19, 1-21, 1-22, 1-24, 5-4 /TEAR OFF 1-17 PE (paper en[…]

  • Страница 177

    Index consumption 1-11 on 1-22, 3-6, 3-7, 3-9, 3-10, 6-34 default settings 1-13, 1-22 hours 1-11 reset 6-25 sequence 2-1 outlet 2-1,6-31 supply 1-28, 1-30, 3-1, 3-4, 4-1, 4-4, 4-23, 4-24, 6-19, 6-31 through 6-33, 7-4 voltage 3-5, 3-6 precautions 4-1 preventive maintenance 5-5 primary circuit 3-1, 4-1, 4-4, 6-20, 6-31 print buffer 1-1, 1-13, 1-15, 1[…]

  • Страница 178

    Index. gears 3-6, 5-6, 6-18 READY 1-17, 1-19 rear entrance 6-7, 6-10, 6-14 feed 1-35 frame 4-11 paper guide 4-20 PE sensor 1-24, 3-2, 3-20, 4-19, 6-13, 6-14, 6-26, 7-4 recycled paper 1-6, 1-7 reduction gear 6-6, 6-7 reference voltage 6-26 release error 3-5 lead 4-20 lever 1-5, 1-24, 1-27, 3-2, 3-5,4-13, 4-14, 5-1, 6-6, 6-7, 6-12, 6-26 sensor 3-19, […]

  • Страница 179

    Index schematics 7-5 through 7-9 screwdriver 4-1 screws 4-3 secondary circuit 2-1, 3-1, 4-1, 4-4, 6-20 self-test 1-22, 2-1, 3-6, 6-36 sensor 1-31, 3-1, 3-2, 3-6, 3-7, 4-18, 4-19, 4-20, 6-3, 6-19 circuits 6-26 front PE 1-24, 3-2, 3-20, 4-19, 6-13, 6-15, 6-16, 6-26, 7-3 HP 1-26, 3-2, 3-6, 3-7, 3-19, 4-18, 6-3, 6-26, 7-3 locations 3-19 rear PE 1-24, 3[…]

  • Страница 180

    Index T tear-off 1-17, 1-18, 1-19, 1-20, 1-24, 1-27 temperature 1-6, 1-7, 1-11, 2-1, 6-2, 6-26 tension spring 4-12 test pins 3-2 points 3-1 through 3-4 tests 3-1 text mode 1-12 thermal protection 1-24 thermistor 2-4, 3-3, 3-5, 6-2, 6-26 thick paper 1-4, 1-5 thickness 1-6, 1-7, 1-8, 1-25, 4-1,6-4 gauge 4-1,5-2 thin paper 1-4 timeout 2-4, 3-8 timers […]

  • Страница 181

    Index voltage 1-19, 1-24, 3-1, 3-5, 3-6 change 6-2 detector 6-19 drop protection circuit 6-20 error 1-19, 1-27, 3-5 input 6-19 monitor circuit 6-26 output 6-19 overload protection circuit 6-20 range 1-11 supply 6-19 volts 3-1 Vref circuit 6-26 W wall switches 2-1 WARNING 4-1, 4-4, 4-24, 3-1 washers 4-3 waveform 6-31, 6-32, 6-33, 6-34, 6-37 weight 1[…]

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  • Page 1: Epson FX-870/1170

    FX-870/1170 SERVICE M ANUAL I Revision Level I EPSON ® @ Printed on Recycled Paper.[…]

  • Page 2: Epson FX-870/1170

    FCC Compliance Statement For American Users This equipment has been tested and found to comply with limits for a Class B digital device pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequen[…]

  • Page 3: Epson FX-870/1170

    — Copyright Notice All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electric, mechanical, photocopying, recording, or otherwise, without the written permission of Epson America, Inc. No patent liability is assumed with respect to use of the information cont[…]

  • Page 4: Epson FX-870/1170

    Precautions Precautionary notations throughout the text are categorized relative to 1) personal injury, and 2) damage to equipment. WARNING Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by a WARNING heading. CAUTION Signals a precaution w[…]

  • Page 5: Epson FX-870/1170

    How to Use this Manual This manual contains the information that a service provider needs to support the Epson FX-870/1170 printer. 0 It provides general information and specifications for the printer. 0 It tells you how to set up and configure the printer at a customer site. . If you encounter problems, the manual explains how to troubleshoot the […]

  • Page 6: Epson FX-870/1170

    4 Disassembly/Assembly This chapter lists the tools you need and gives the recommended procedure for removing and replacing components. 5 Adjustments, Maintenance, and Lubrication This chapter provides instructions for performing the platen gap adjustment and the bidirectional adjustment procedure. There is also a description of the lubricants requ[…]

  • Page 7: Epson FX-870/1170

    Handy Numbers for U.S. Dealers Epson Customer Resource Center (800) 922-8911 Epson Faxback System (310) 782-4214 Epson Bulletin Board System (310) 782-4531 Numbers and Addresses for Dealers Outside the U.S. Epson Canada, Ltd. 95 Mural Street Richmond Hill, Ontario LAB 3G3 ;htp (800) GO-EPSON . . (416) 881-5765 Epson Do Brazil Av. Pedroso De Morais […]

  • Page 8: Epson FX-870/1170

    Contents — Contents Chapter 1 Printer Features Options ……………………………………………………………………… 1-3 Hardware Specifications ………………………………………………………………… 1-3 Firmware Specifications ………………………………………………………………. 1-12 In[…]

  • Page 9: Epson FX-870/1170

    Contents Chapter 4 Disassembly and Assembly Precautions ………………………………………………………………………………… 4-1 Tools …………………………………………………………………………………………. 4-1 Service Checks After Repair ………………………………………………[…]

  • Page 10: Epson FX-870/1170

    Printer Features Chapter 1 Printer Features Options.. ………………………………………………………………………………………. 1-3 Hardware Specifications.. ………………………………………………………………. 1-3 Printing Method ……………………………………………………………..[…]

  • Page 11: Epson FX-870/1170

    Printer Features C094 MAIN Board Assembly (Main Control Board) …………….. 1-29 C094 PNL Board Assembly (Control Panel Circuit Board) ………………. 1-30 C076 PSB Board Assembly (Power Supply Circuit Board) ……………… 1-30 Printer Mechanism ……………………………………………………………… 1-31 Housing Asse[…]

  • Page 12: Epson FX-870/1170

    Printer Features Table 1-14. Optional Interface ………………………………………………….. 1-16 Table 1-15. Identifying Errors Using the LEDs ………………………….. l-19 Table 1-16. Group 1 Features …………………………………………………… 1-20 Table 1-17. Group 2 Features (ESC/P Mode) …………….[…]

  • Page 13: Epson FX-870/1170

    Printer Features 1 The FX-870/1170 combines advanced firmware, reliability, and affordability in a single light-weight unit. The major features of this printer are: l Upward compatibility with the FX-850/1050 and the FX-86e/286e l 380 cps (high-speed draft for both 80- and 136-column models) l 285 cps (draft pica), 342 cps (draft elite) l Advanced […]

  • Page 14: Epson FX-870/1170

    Printer Features 80-column model 1-2 136-column model Figure 1-1. External View of the FX-870/1170 Epson FX-870/1170[…]

  • Page 15: Epson FX-870/1170

    Printer Features options C806371 C806391 C806381 C806401 C800201 C800211 C814001 C814011 C823051 C823071 C823101 C823141 C823151 #8750 #8755 #8758 #8310 Single-bin cut-sheet feeder (80-column) Single-bin cut-sheet feeder (136-column) High-capacity cut-sheet feeder (80-column) High-capacity cut-sheet feeder (136-column) Tractor unit (80-column) Trac[…]

  • Page 16: Epson FX-870/1170

    Printer Features Dot matrix: 9 x 7 matrix (high-speed draft) 9 x 9 matrix (drafk) 18 x 23 matrix (NLQ) Paper Handling Feeding methods: Friction feed (front/top) Push tractor feed (front/rear) pull tractor feed (front/rear/bottom) Push-pull tractor feed (front/rear) Method to use for each type of paper: Fanfold: Tractor feed Cut sheets: Friction fee[…]

  • Page 17: Epson FX-870/1170

    Printer Features Precautions for Handling Paper Friction feed l Set the release lever to the FRICTION position. l Load the paper from the front or top entrance. l Do not use continuous paper. l Do not perform any reverse paper feeds within the top 0.34” (8.5 mm) area and bottom 0.88” (22 mm) area. l Do not perform reverse feeds greater than l/6[…]

  • Page 18: Epson FX-870/1170

    Printer Features Paper Specifications See Tables 1-2, 1-3, 1-4, 1-5, 1-6, and 1-7. Normal Environmental Conditions Recycled paper, envelopes, and labels require normal environmental conditions, which are the following: Temperature: 59-68”F(15-25°C) Humidity: 30 — 60 % RI-I Table 1-2. Specifications for Cut Sheets (Standard Paper) Width top inser[…]

  • Page 19: Epson FX-870/1170

    Printer Features Table 1-4. Specifications for Continuous Paper Width Thickness Weight Quality 4- 10” (101-254 mm) 80-column 4-l 6” (101-406 mm) 136~column 0.0025-0.012” (0.065-0.32 mm) 14-22 lb (45-70 kg) (52.3-82 g/m*) — single sheet 12-l 5 lb (34-50 kg) (40-58.2 g/m*) — each Standard or carbonless duplicating paper Recycled paper (at norma[…]

  • Page 20: Epson FX-870/1170

    Printer Features Table 1-7. Specifications for Roll Paper — Size 8.5 f 0.12” (216 A 3 mm) Thickness 0.0028-0.0035” (0.07-0.09 mm) Weight 14-22 lb (45-70 kg) (52.3-82 g/m*) Quality Standard paper Note: Roll paper is available optionally only for the 80-column model, and its diameter must not exceed 5” (127 mm). Printable Area Cut sheets top in[…]

  • Page 21: Epson FX-870/1170

    Printer Features Continuous paper c c 0 3 0 0 0 101-254 mm (4-10″): 80 columns 101-406 mm (4-16″): 136 columns > *1 >L+ 0 0 0 0 0 0 0 G c c WXYZ g J 0 -0 0 0 WXYZ g I 0 0 0 <I 0 0 c ABCD 0 0 0 0 0 0 C c Printable Area Figure 1-4. Printable Area for Continuous Paper l 1 13 mm (0.51”) or more when the paper width is 4” to 9.5?[…]

  • Page 22: Epson FX-870/1170

    Printer Features Roll paper (80-column model only) top insertion 216 2 3 mm (8.5 2 0.12”) — Printable Area WXYZ t WXYZ J Figure 1-5. Printable Area for Roll Paper *I 0.12” (3.0 mm) or more Note: Paper feed accuracy cannot be assured within 24 mm (0.94”) from the bottom edge of the paper (top insertion only). Ribbon Cartridge Ribbon Color Whhn[…]

  • Page 23: Epson FX-870/1170

    Printer Features Electrical Specifications See Table l-8. Table 1-8. Electrical Specifications for 120 V Model Rated voltage 120 VAC Input voltage range 103.5132 VAC Rated frequency range 50-60 Hz Input frequency range 49560.5 Hz . Rated current 1.8 A Power consumption Approx. 45 W ( 80 columns) Approx. 45 W (136 columns) (Self-test in draft mode, […]

  • Page 24: Epson FX-870/1170

    Printer Features Safety Approvals Safety standards UL1950 with D3 CSA!z2.2#220 RF1 * FCC class B Firmware Specifications Print Control Printing direction Text mode Bidirectional printing with logic seeking. (Unidirectional printing can be specified by software.) Bit image mode Unidirectional printing Character sets ASCII characters ESC/P mode — Ita[…]

  • Page 25: Epson FX-870/1170

    Printer Features Table 1-12. Print Speed Type of letters Print speed [cps] High-speed draft 380 (320) 11421 Draft pica 285 ii421 Draft elite 342 [1701 Condensed draft pica 243 v221 Emphasized draft pica 142 1711 NLQ normal pica 57 Notes: 1. The printing speed for high-speed drafl is reduced to the value in ‘I( )” with thick paper (over 0.007 in[…]

  • Page 26: Epson FX-870/1170

    Printer Features BUSY I ACKNLG DATA p . . . . . . . . . . . . . . . . -.- STROBE — t1 t1 t1 t2 t3 t,: 0.5 p-s (minimum) t2: 7 w (approximate) 5: 5 w (approximate) Figure 1-6. Data Transmission Timing Table 1-13. Connector Pin Assignments and Signal Functions Signal Return Pin Pin Signal No. No. Name Dir. Description 1 19 STROBE In STROBE pulse to r[…]

  • Page 27: Epson FX-870/1170

    Printer Features Table 1-13. Connector Pin Assignments and Signal Functions (Cont.) signal Return Pin Pin Signal No. No. Name Dir. Description 12 30 PE Out A HIGH signal indicates that the printer is out of paper. . 13 — — — Pulled up to +5 V through a 3.3K-ohm resistor. 14 — AUTO FEED In When this signal is LOW, paper is XT automatically fed one l[…]

  • Page 28: Epson FX-870/1170

    Printer Features should be shielded and connected to the chassis of the host computer and the printer, respectively. — 4. All interface conditions are based on TTL level. Both the rise and fall times of each signal must be less than 0.2 us. 5. Data transfers must not be carried out by ignoring the ACKNLG or BUSY signal. (Data transfers to this prin[…]

  • Page 29: Epson FX-870/1170

    Printer Features — Control Panel READY ,, OPL,, Figure 1-7. Control Panel Buttons OPERATE 1 lock type button PAUSE/TEAR OFF PAPER FEED I- (non-lock push-type buttons) FONT Indicators READY — (green) 3 LEDs FONT (Draft, Roman, Sans serif) — (green) CONDENSED — (green) Buttons PAUSE l When there is data in the input buffer: Selects printing or pause […]

  • Page 30: Epson FX-870/1170

    Printer Features FONT (ALT) — Selects NLQ Roman, NLQ Sans serif, Draft, and condensed ofthose 3 fonts in rotation: (DraR + Draft cond. 3 Roman + Roman cond. 3 Sam serif * Sam cond. + Draft + Draft cond. . …) (The factory setting is Draft, uncondensed font.) The selection is executed when the button is released and is stored in non-volatile memory[…]

  • Page 31: Epson FX-870/1170

    Printer Features Bin Selection for the Cut Sheet Feeder l When there is no paper in the paper path: Holding down the FONT (ALT) button while pressing PAUSE or PAPER FEED alternates bin selection if a double-bin cut-sheet feeder is attached and friction feed is selected. Paper Ejection Holding down the FONT (ALT) button and pressing PAPER FEED eject[…]

  • Page 32: Epson FX-870/1170

    Printer Features Default Settings -. You can set certain default parameters to be used at printer initialization. To change the parameters shown in Table l-16, Group 1 Features, follow the steps below: 1. Turn on the printer while pressing the FONT button. The printer beeps once and prints the current default settings on the paper loaded in the pap[…]

  • Page 33: Epson FX-870/1170

    Printer Features To change the settings shown in Table 1-17, Group 2 Features (ESC/P mode), or in Table l-18, Group 2 Features (7BM mode), follow the steps below: 1. Turn on the printer while pressing the FONT and PAUSE buttons. The printer beeps once and prints the current character table for either ESC/P or IBM mode on the paper loaded in the pap[…]

  • Page 34: Epson FX-870/1170

    Printer Features Table l-18. Group 2 Features (IBM Mode) FONT COND. READY LED LED LED OFF OFF ON OFF OFF BLINKS OFF ON OFF Character Table Character table PC437 (table 1) (standard) PC437 (table 2) PC865 (table 1) [ OFF 1 ON 1 ON PC865 (table 2) Notes: 1. For table 1, codes 80-9FH are control codes. (ESC 7 is set.) For table 2, codes 80-9FH are pri[…]

  • Page 35: Epson FX-870/1170

    Printer Features sheet feeder (CSF), the first sheet is used for scaling the sheet length. Then, the maximum number of printable lines is printed in the bottom line of the sheet and saved in non-volatile memory as the default page length. Page lengths are saved individually when a dual-bin CSF is in use. The self test prints out the following: l Ma[…]

  • Page 36: Epson FX-870/1170

    Printer Features Paper-out Detection If the paper-out sensor detects a paper out, the printer automatically enters a pause condition after feeding or printing several lines. When a paper-out is detected, load new paper properly and set the printer ready to print by pressing the PAUSE button. Auto Tear-off When the release lever is set to one of the[…]

  • Page 37: Epson FX-870/1170

    Printer Features position. If a paper out is detected before printing starts, the sheet is loaded automatically to the top-of-form position, without PAPER FEED being pressed. l Continuous paper loading and ejection (paper park) Move the release lever to REAR PUSH/FRONT PUSH position and load paper into the tractor unit. Press PAPER FEED to load the[…]

  • Page 38: Epson FX-870/1170

    Printer Features Printer Initialization The printer is initialized in the following cases. l When the printer is turned on. l When the INIT signal or CMREQ (optional I/F ) is input. When the printer is initialized, it performs the following functions: l The printhead returns to the leftmost position (carriage home). l The READY LED lights. l The pr[…]

  • Page 39: Epson FX-870/1170

    Printer Features -. Buzzer The buzzer beeps for 0.1 second at a time. These beep sounds are combined in various ways, as shown below, to indicate different meanings. In the following table, each ” l ” stands for one beep. Table 1-21. Buzzer Functions Status Sound Description 3EL code 0 Sounds when a BEL code is received. Zarriage trouble — — A […]

  • Page 40: Epson FX-870/1170

    Printer Features Main Components The components of the FX-870/1170 are designed for easy removal and replacement during maintenance and repair. The main components are: l C094 MAIN board assembly l C094 PNL board assembly l C076 PSB board assembly l Printer mechanism l Housing assembly The following figure shows the main components of the FX-870/11[…]

  • Page 41: Epson FX-870/1170

    Printer Features C094 MAIN Board Assembly (Main Control Circuit Board) Basically, the same board layout is used in both the 136~column model and the 80- column model. The CPU on this board controls all the main functions of the printer. It consists of a TMP90C041F 8-bit CPU, an E05A55YA gate array, an E2PROM, a PSRAM, a MASK ROM, motor drivers, and[…]

  • Page 42: Epson FX-870/1170

    Printer Features C094 PNL Board Assembly (Control Panel Circuit Board) This boardis the control panel ofthe F’X-870/1170, consisting of a power button, three function buttons, and three indicator LEDs. Figure 1-13. CO94 PNL Board Assembly (Control Panel Circuit Board) CO76 PSB Board Assembly (Power Supply Circuit Board) This board is composed of […]

  • Page 43: Epson FX-870/1170

    Printer Features Printer Mechanism The printer mechanism consists of a g-pin impact dot head, a carriage mechanism, a carriage motor, a paper feed mechanism, a paper feed motor, a ribbon feed mechanism, and various sensors. 136-column model 80-column model Figure l-16. Printer Mechanism Epson FX-870/1170 1-31[…]

  • Page 44: Epson FX-870/1170

    Printer Feature8 Housing Assembly The printer mechanism and all the boards are contained in a housing assembly that consists of the upper case and the lower case. 1-32 Figure 1-16. Housing Assembly Epson FX-870/1170[…]

  • Page 45: Epson FX-870/1170

    Printer Features Commonly Asked Questions and Answers This section contains facts that customers often want to know about this printer. The question-and-answer format is to make it easier for you to scan through the information. 1. Q. A. 2. Q. A. 3. Q. A. 4. Q. A. 5. Q. A. 6. Q. A. What are the FX-870 and FX-1170 printers? The FX-870 and FX-1170 pr[…]

  • Page 46: Epson FX-870/1170

    Printer Features 7. Q. A. Do the FX-870 and FX-1170 use the same ribbons as the FX-850 and FX- 1050? Yes. 8750 (fabric) for the FX-870 8755 (fabric) for the FX-1170 8758 ribbon only replacement pack (Never use ribbons for 24-pin printers. To extend printhead life, use only the Epson ribbons listed above.) 8. Q. What is the part number for the print[…]

  • Page 47: Epson FX-870/1170

    Printer Features 13. Q. How many paper paths are there for the FX-870 and FX-1170? A. The printers have 4 paper paths: Top feed Bottom feed Rear feed Front feed 14. Q. How is the tractor used for feeding with the FX-870/1170? A. The FX-870 and FX-1170 come with one tractor, which can be positioned for three different types of feeding: Front feed pu[…]

  • Page 48: Epson FX-870/1170

    Installation and Setup Chapter 2 Installation and Setup Procedures Site Requirements ………………………………………………………………………… 2-1 Removing the Packing Materials ……………………………………………………. 2-1 The Correct Power On Sequence ………………………………………….[…]

  • Page 49: Epson FX-870/1170

    Installation and Setup Procedures 2 . This chapter provides tips to help you select a site, set up, and test the printer. There is information on the using the parallel and serial interfaces, along with cabling configurations for serial transmission. The last portion of the chapter provides information customers need to know about this printer to e[…]

  • Page 50: Epson FX-870/1170

    Installation and Setup Running the Self-Test The self-test checks the printer mechanically and electronically to make sure it works properly. If the printer runs the self-test successfully, it means that everything is operational in the printer (with the possible exception of the interface circuit). To run the self-test, hold down the PAPER PEED bu[…]

  • Page 51: Epson FX-870/1170

    Installation and Setup The cable configuration for connecting the printer serially to a 25-pin (XT-type) computer connector is shown in the figure below. PtiIltff side 25pin to 25pin Serial Cable Computer 1 FGND, ,l FGND :~.-x,xl 5 CTS 4 ,5 CTS 6 DSR 4 +6 DSR Figure 2-2. Serial Cable Configuration to a 25Pin Computer Connector — Checking the Printe[…]

  • Page 52: Epson FX-870/1170

    Installation and Setup Then try sending a print screen again or type: DIR > PRN and press Enter at the MS-DOS prompt to print a listing of the current directory. — (If you needed to change the MS-DOS MODE command to reroute the computer’s output to the correct port, edit the system’s AUTOEXEC.BAT file to include this MODE command automatical[…]

  • Page 53: Epson FX-870/1170

    Troubleshooting Chapter 3 Troubleshooting Test Points …………………………………………………………………………………… 3-1 Error Codes ………………………………………………………………………………….. 3-5 Problem Isolation ………………………………………………………..[…]

  • Page 54: Epson FX-870/1170

    Troubleshooting 3 The information in this section can help you identify causes of printer problems and test the printer to isolate the part that needs to be replaced. The chapter also contains illustrations showing connector locations and sensor locations. Once you have read this chapter to determine what tests you need to run on the printer, see C[…]

  • Page 55: Epson FX-870/1170

    Troubleshooting Table 3-2. Sensor Test Points Sensor Test Method Connector (Set Meter to Ohms. Number Check with Printer Power Off.) Release Lever Place one lead on each pin. Change the release (CN4) lever position. Platen Gap Place one lead on each pin. Change the adjust (CW lever position. CR Home Place one lead on each pin. Move carriage to and […]

  • Page 56: Epson FX-870/1170

    Troubleshooting — Ho #8 0 #I7 0 #6 0 #I5 0. #4 0 #3 0 #2 0 #’ 0 [TERMINAL ASSIGNMENT] Note: The printhead is upside down in this illustration. [WIRE ASSIGNMENT] 1 Note: The commons correspond to the following printhead dot wires: J COM. 2 = #2, #4, #6 COM. 8 = #7, #8, #9 COM. 14=#1,#3,#5 Figure 3-1. Printhead Resistance Table 3-4. Printhead Test […]

  • Page 57: Epson FX-870/1170

    Troubleshooting Table 3-5. Printhead Driver Test Points Transistor Test Method Numbers (Set Meter to Diodes. Check with Printer Power Off.) Meter Reading Q2, Q4, Q5 Emitter and base are marked on the CO94 MAIN board. Consistent readings for all Q6, Q8, Q9 Check from base to collector, from base to emitter, and transistors, within YZ 20%. Ql 0, Ql 1[…]

  • Page 58: Epson FX-870/1170

    Troubleshooting Error Codes Table 3-7. Error Codes Error Warning Error Cause 3uzzer beeps: Carriage error Use flowchart 2 in this chapter to isolate moo.0 the problem. 3uzzer beeps: Memory error RAM abnormality. Y.0.0.. 3uzzer beeps: mnnnn Memory error E2PROM abnormality. 3uzzer beeps: Paper out error l Continuous paper has run out. moooooOenoeonnn[…]

  • Page 59: Epson FX-870/1170

    Troubleshooting Problem Isolation Most printer problems can be corrected by replacing the defective unit. First, identify the problem from the symptoms you observe using the table below. Then, follow the instructions in the corresponding flowchartto correct the problem. Table 3-8. Symptoms and Flowchart References Flowchart Symptom Possible Problem[…]

  • Page 60: Epson FX-870/1170

    Troubleshooting Table 3-8. Symptoms and Flowchart References (Continued) Flowchart Symptom Possible Problems or Solution When I try to load paper, the l There is a problem with one of the PE sensors. Use Table 3-2 printer feeds it back out. l The main board is not reading sensor output correctly. to test front and rear PE sensor. The printer contin[…]

  • Page 61: Epson FX-870/1170

    Troubleshooting Table 3-9. IdentiQing Serial Communications Errors (Continued) Problem Device timeout error Possible Cause l The computer is not set for infinite retries to the printer. Solution Type a MODE command from the MS-DOS prompt that includes the infinite retry parameter. For instance, if the serial interface card’s switches are in the f[…]

  • Page 62: Epson FX-870/1170

    Troubleshooting Chart 1. Printer Dead at Power On 0 START NO I Use correct AC voltage. (No fluctuation from AC range shown at left is permitted. No No No Dower on, does the new I (+35 V) at oin 10 I Measure the VP (+35 V) at pin 10 of CM2 on the C076 PSR board assembly. 1 “;e;c;dhe board assembly. I board. Measure the VL (+5 VI at pin 1 of CM2 on[…]

  • Page 63: Epson FX-870/1170

    Troubleshooting Chart 1. Printer Dead at Power On (Continued) Disconnect connector CM1 2 and power on printer. Yes initialize? R;g;y;N;ha board. Check motors and printhead. 1 END I” (If shorted, use Tables 3-5 and 3-6 to check drivers on C994 MAIN board, and if bad, replace main board at same time. 1 board. END * — 3-10 Epson FX-870/1170[…]

  • Page 64: Epson FX-870/1170

    Troubleshooting Chart 2. Carriage Does Not Move or Moves Abnormally kcuro thr on the CO94 U&IN connmtors. Manually wow the Check the gears. timing belt. and belt pulley for war, brmkagr, objects. and Coralgn Replace parts and lubrlcatr as nerdad. (km Chapter 5.1 Rapl8ca the Cg94 MAIN board. Repl8ce CR motor. If any coil Is shorted. use Table 3-[…]

  • Page 65: Epson FX-870/1170

    Troubleshooting Chart 3. Paper Does Not Feed or Feeds Abnormally n START YOS / No IR, TY*s No / il Replace PF motor. If my coil Is shortrd. use Table 3-6 to Cast PF drlvors on the CW4 WIN board. and If bad. raplace uln board at aaa tin. roslstanca of tha PF motor. Is It 63 l /- 3 I No 3-12 END * Epson FX-870/1170[…]

  • Page 66: Epson FX-870/1170

    Troubleshooting Chart 4. Poor Print Quality in Self-Test and turning on the prlntar. bo8rd connected Srcurs the connectors. Are any dots 1 q lsslng or Q drrgglng? No Perform thll No for bent or Chmck printhead rrslstance. If It Is not 16.5 ohms +/- 1.6 olmr raplax thr prlnthrad. If any prlnthmd pin Is shortrd. use Tablo 3-5 to chack drlwrs QZ — Q13[…]

  • Page 67: Epson FX-870/1170

    Troubleshooting Chart 5. Ribbon Not Feeding Properly START Q Rap I ace the ribbon mark. rlght and left, does ribbon See Figure 6-21 (page 6-18). Check gearing for broken or wore gears or foreign objects stuck In the gears. Repface eny gears necessmy. Lubricate as necessary. (See Chapter 5.1 And make sure gears are turning smoothly. -, 3-14 Epson FX[…]

  • Page 68: Epson FX-870/1170

    Troubleshooting Chart 6. Data fhm Host is Printed Incorrectly — Run self-tart. (Turn on prlntor *hIlo holding down the PAPER FEED button. 1 If self-tart Is g8rbl.d. th8 problr Is with the RDN or C194 RAIN bo8rd. Chrck daf8UltS shown in the self-test. Are they correct for the 8ppliC8tlOn? If not. sat th8m correctly. (Sm Def8Ult Settings In Chaptar 1[…]

  • Page 69: Epson FX-870/1170

    Troubleshooting Chart 7. Page Length/Margins Incorrect Run self-test and chSck the printer’s drf8ult settings 8gainst the settings In your 8pplic8- tlon SOftW8rS. printer. Th8 problv Is wlth th8 softw8ro YOS The C894 IL&IN bo8rd f-l “y bs b8d. (This Is mor8 r8rS than problems with softw8rS settings.) 3-16 Epson FX-870/1170[…]

  • Page 70: Epson FX-870/1170

    Troubleshooting Chart 8. Printout Double-Spaced the printer Is OK. At the MS-DOS prompt, type the following: NODE=LPTn:.6.P and press Enter. (“n” is the port you 8r* using. 1 Send another print screen. Disconnmt the cable. At the prlntar connector. you will see that the pin nmbers are Iabolod. Put a piace of tape over pin 14 to block thr sIgnal[…]

  • Page 71: Epson FX-870/1170

    Troubleshooting Connector Locations The layout diagram below shows the positions of connectors on the C094 MAIN board. ‘R / II’ PE Rear’ 3-18 Figure 3-2. Connector Locations Epson FX-870/1170[…]

  • Page 72: Epson FX-870/1170

    Troubleshooting Sensor Locations The illustrations below show the locations of sensors in the printer mechanism. Figure 3-3. Release Sensor Figure 3-4. Home Position Sensor Epson FX-870/1170 3-19[…]

  • Page 73: Epson FX-870/1170

    Troubleshooting Printer Mechanism Figure 3-5. Platen Gap Sensor Rear Paper Guide Assembly 3-20 Figure 3-6. Front and Rear PE Sensors Epson FX-870/1170[…]

  • Page 74: Epson FX-870/1170

    Troubleshooting Hex Quick Reference Table for ESC/P Commands Use the table below as an aid to read printer hex dumps. This table is for quick reference only. The user’s guide contains a detailed description of the control codes. Table 3-10. Hex. Codes for ESC/P Commands Hex. Dec. ASCII Command 07 08 09 OA OB oc OD OE OF 11 12 13 14 18 19 20 21 23[…]

  • Page 75: Epson FX-870/1170

    Troubleshooting Table 3-10. Hex. Codes for ESC/P Commands (Continued) — Hex. Dec. ASCII Command 3D 61 ESC = Set MSB to 0 3E 62 ESC > Set MSB to 1 3F 63 ESC?sm Reassign graphics mode 40 64 ESC @ Initialize printer 41 65 ESCAn Set n/72-inch line spacing 42 66 ESC B nn Set vertical tabs 43 67 ESC C n (0 n) Set page length in lines (in inches) 44 68[…]

  • Page 76: Epson FX-870/1170

    Troubleshooting Hex Quick Reference Table for IBM Commands Use the table below as an aid to read printer hex dumps. This table is for quick reference only. The user’s guide contains a detailed description of the control codes. Table 3-11. Hex. Codes for IBM Commands Hex. Dec. ASCII Command 07 07 08 08 09 09 OA 10 OB 11 oc 12 OD 13 OE 14 OF 15 11 […]

  • Page 77: Epson FX-870/1170

    Troubleshooting Table 3-11. Hex. Codes for IBM Commands (Continued) — I Hex. Dec. ASCII Command I 4E 78 4F 79 50 80 51 81 52 82 53 83 54 a4 55 a5 57 a7 58 aa 59 89 5A 90 5B 40 91 64 5c 92 5E 94 5F 95 ESCNn ESC 0 ESC P l/O ESCQn ESC R ESC S l/O ESC T ESC U l/O ESC W l/O ESCXnl r-12 ESC Y nl n2 ESC Z nl n2 ESC [ Q nn ESC nl n2 ESC h ESC- l/O Set sk[…]

  • Page 78: Epson FX-870/1170

    Disassembly and Assembly Chapter 4 Disassembly and Assembly Precautions ………………………………………………………………………………… 4-1 Tools ………………………………………………………………………………………….. 4-1 Service Checks After Repair ……………………………….[…]

  • Page 79: Epson FX-870/1170

    Disassembly and Assembly Figure 4-12. Removing the PF Motor Assembly …………………………… 4-13 Figure 4-13. Disassembling the PF Gear Train ……………………………. 4-14 Figure 4-14. Positioning the Release Lever for Insertion ………………. 4-14 Figure 4-15. Removing the Carriage Guide Assembly ………………….. 4[…]

  • Page 80: Epson FX-870/1170

    Disassembly and Assembly 4 — This section provides information you need to know to disassemble or assemble the printer. Precautions Read the precautions below before you disassemble or assemble the printer. WARNING Before disassembling, assembling, or adjusting the printer, disconnect the power supply cable from the AC power outlet. Failure to do s[…]

  • Page 81: Epson FX-870/1170

    Disassembly and Assembly Service Checks After Repair Before you send the printer back to the customer, fill in the checklist in Table 4-3 to note the current state of the components. This checklist facilitates servicing and shipping. Table 4-3. Inspection Checklist for Repaired Printer — QmwY Printer features Component Printhead Carriage mechanism[…]

  • Page 82: Epson FX-870/1170

    Disassembly and Assembly Screw Specifications This chapter uses abbreviations for small parts, such as screws and washers. Tables 4-4 and 45 list these abbreviations. Table 4-4. Abbreviations Used for Screws Abbreviation Part Name CBB Cross-recessed Bind head B tight screw CBC Cross-recessed Bind head C tight screw CBN . Cross-recessed Bind head N […]

  • Page 83: Epson FX-870/1170

    Disassembly and Assembly Notes for Unit Removal and Installation This section describes the procedures for disassembling and assembling the main components of the printer. Generally, you can install a component in the printer simply by reversing the procedure for removing the component. Therefore, this chapter does not describe assembly procedures […]

  • Page 84: Epson FX-870/1170

    Disassembly and Assembly Items to Remove Before Disassembling the Printer 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. Figure 4-2. Removing the Paper Guide Assembly Note: Remove the paper eject cover and the tractor unit by pushing and releasing the hooks at both sides. When remounting the[…]

  • Page 85: Epson FX-870/1170

    Disassembly and Assembly Removing the Panel Unit — 1. Remove the paper guide assembly, ribbon, top cover, f?ont cover, paper eject cover and tractor unit. fSee page 4-5.) 2.’ Push the two clips on the bottom of the panel unit and remove the panel unit. 3. Remove the flexible flat cable (FFC). Figure 4-3. Removing the Panel Unit Assembly Note The […]

  • Page 86: Epson FX-870/1170

    Disassembly and Assembly Removing the Printhead 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the two CBS (M3x8) screws from the printhead, lift the printhead up, and remove the FFC cable. 3. Remove the printhead. FFC Figure 4-5. Removing the Printhead Epson FX-870[…]

  • Page 87: Epson FX-870/1170

    Disassembly and Assembly Removing the Upper Housing Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the four CBC (M4x15) screws securing the upper housing assembly. (There are only three screws in the 80-column print[…]

  • Page 88: Epson FX-870/1170

    Disassembly and Assembly Removing the Printer Mechanism 1. 2. 3. 4. 5. 6. 7. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the upper housing assembly. (See page 4-8.) Remove the four CBB (M4x12) screws securing the printer mechanism[…]

  • Page 89: Epson FX-870/1170

    Disassembly and Assembly Removing the Platen Assembly -_ 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the two CBS (M3x8) screws securing the platen cover. 5. Disengage t[…]

  • Page 90: Epson FX-870/1170

    Disassembly and Assembly Removing the Rear Frame Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Remove the platen assem[…]

  • Page 91: Epson FX-870/1170

    Disassembly and Assembly Removing the CR Motor Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor -’ unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the face screw (M3x7) securing the CR motor assembly. After re[…]

  • Page 92: Epson FX-870/1170

    Disassembly and Assembty Removing the PF Motor Assembly — 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Set the release lever t[…]

  • Page 93: Epson FX-870/1170

    Disassembly and Assembly Disassembling the PF Gear Train 1. Remove the paper guide assembly, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 48.) 4. Remove the printer mechanism. (See page 4-Q.) 5. Remove the CR motor assembly. (Se[…]

  • Page 94: Epson FX-870/1170

    Disassembly and Assembly Removing the Carriage Assembly 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit, (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the printhead. (See page 4-7.) Remove the upper housing assembly. (See page 4-8.) Remove the printe[…]

  • Page 95: Epson FX-870/1170

    Disassembly and Assembly Assembly Note ‘- When attaching the timing belt to the carriage assembly, secure the timing belt using the 1eR and right clips of the carriage assembly as shown below. Make sure there is no slack in the timing belt. Clip Timing Figure 4-16. Attaching the Timing Belt 4-16 Epson FX-870/1170 -[…]

  • Page 96: Epson FX-870/1170

    Disassembly and Assembly Removing the Ribbon Drive (RD) Assembly 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Remove the plate[…]

  • Page 97: Epson FX-870/1170

    Disassembly and Assembly Removing the Home Position (HP) Sensor — 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the clip of the HP sensor. Remove the sensor. 3. Disconnect the HP lead from the HP sensor. Figure 4-18. Removing the HP Sensor Removing the Platen Gap ([…]

  • Page 98: Epson FX-870/1170

    Disassembly and Assembly Removing the Front and Rear Paper End (PE) Sensors 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Remove the panel unit. (See page 4-6.) 3. Remove the upper housing assembly. (See page 4-8.) 4. Remove the printer mechanism. (See page 4-9.) 5. Remov[…]

  • Page 99: Epson FX-870/1170

    Disassembly and Assembly Removing the Release Sensor 1. 2. 3. 4. 5. 6. 7. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the upper housing assembly. (See page 4-8.) Remove the printer mechanism. (See page 4-9.) Remove the platen asse[…]

  • Page 100: Epson FX-870/1170

    Disassembly and Assembly Arranging the Cables When you assemble the printer, arrange the cables as shown in Figure 4-22. El — — Printer Mechanism (Bottom) W Figure 4-22. Arranging the Cables Epson FX-8700170 4-21[…]

  • Page 101: Epson FX-870/1170

    Disassembly and Assembly Disassembling the Tractor Unit 1. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) 2. Release the two clips for cog (17) from the tractor shaft. Remove the cog. 3. Remove the right tractor frame from the tractor shaft and the tractor guide shaft. 4. Remove[…]

  • Page 102: Epson FX-870/1170

    Disassembly and Assembly Removing the C094 MAIN Board Assembly 1. 2. 3. 4. 5. 6. 7. 8. 9. Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor unit. (See page 4-5.) Remove the panel unit. (See page 4-6.) Remove the upper housing assembly. (See page 4-8.) Remove the printer mechanism. (See page 4-9.) Discon[…]

  • Page 103: Epson FX-870/1170

    Disassembly and Assembly Removing the C076 PSB Board Assembly NOTE To remove the C076 PSB board assembly for replacement, you must use a special extractor tool, available from Epson Parts Order Services. After obtaining the special tool shown, follow the procedure below. I OneWai (Rivet Head) Screw Figure 4-26. Special Extractor Tool WARNING Do not[…]

  • Page 104: Epson FX-870/1170

    Disassembly and Assembly CBC (M3X8) CBB (M3X12) C076 PSB Board Figure 4-27. Removing the C076 PSB Board Assembly Assembly Epson FX-870/1170 4-25[…]

  • Page 105: Epson FX-870/1170

    Adjustments, Maintenance, and Lubrication Chapter 5 Adjustments, Maintenance, and Lubrication Adjusting the Printer Mechanism …………………………………………………… 5-1 Platen Gap Adjustment …………………………………………………………. 5-1 Bidirectional Alignment Adjustment …………………………[…]

  • Page 106: Epson FX-870/1170

    Adjustments, Maintenance, and Lubrication 5 Adjusting the Printer Mechanism This section describes the various adjustments required to keep the printer mechanism in optimum condition. Platen Gap Adjustment If you have changed the printhead, rotated or reassembled the carriage guide shaft, moved the parallelism adjustment bushing, or if printing is […]

  • Page 107: Epson FX-870/1170

    Adjustments, Maintenance, and Lubrication Left Frame 8ox Oriver -4/ ’ Adjustment Bushing Figure 5-2. Parallelism Acijustment Bushing 9. Rotate the adjusting bushing until the platen gap is large enough for a 0.36 mm thickness gauge, but too narrow for a 0.40 mm thickness gauge. 0.38 mm +I Id Figure 5-3. Platen Gap 10. Move the carriage until the […]

  • Page 108: Epson FX-870/1170

    Adjustments, Maintenance, and Lubriition Bidirectional Alignment Adjustment This section describes how to adjust the bidirectional print position to ensure correct printing. Overview of the Bidirectional Alignment Adjustment The FX-870/1170 prints characters when the carriage moves from both from left to right and from right to left. Therefore, the[…]

  • Page 109: Epson FX-870/1170

    Adjustments, Maintenance, and Lubrication Adjustment Operation 1. 2. 3. 4. 5. 6. 7. — Turn on the printer’s power while pressing the PAUSE, PAPER FEED, and FONT buttons simultaneously. The printer enters draft mode and prints the current adjustment value and four lines of the H character. (See Figure 5-3.) If the vertical lines are well aligned, […]

  • Page 110: Epson FX-870/1170

    Adjustments, Maintenance, and Lubrication Preventive Maintenance No preventive maintenance is required other than occasionally vacuuming the printer mechanism to remove dust and paper debris and regularly cleaning the case exterior with denatured alcohol. After cleaning the unit, check that it is properly lubricated as described under Lubrication, […]

  • Page 111: Epson FX-870/1170

    Adjustments, Maintenance, and Lubrication Table 5-2. Lubrication Points Ref. No. Lubrication Points Lubricant 1 Platen gap adjustment slots on the left frame (excluding G-26 the two slots at the bottom) 2 The arms and tab of the RD assembly G-26 d 3 The shaft end of the drive roller assembly G-26 4 The ribbon drive gear train G-26 5 The oil pad in […]

  • Page 112: Epson FX-870/1170

    […]

  • Page 113: Epson FX-870/1170

    Principles of Operation Chapter 6 Principles of Operation Printer Mechanism Operation ……………………………………………………….. 6-1 Printhead Mechanism ……………………………………………………………. 6-1 Carriage Mechanism ……………………………………………………………… 6-3 Pla[…]

  • Page 114: Epson FX-870/1170

    Principles of Operation Figure 6-8. Push-pull Tractor Operation Using the Rear Paper Entrance ……………………………………………….. 6-10 Figure 6-9. Push-pull Tractor Operation Using the Front Paper Entrance ………………………………………………. 6-11 Figure 6-10. Release Lever ……………………………..[…]

  • Page 115: Epson FX-870/1170

    Principles of Operation Table 6-6. Carriage Motor Drive Modes ……………………………………… 6-27 Table 6-7. Repairing the C076 PSB Board Assembly …………………… 6-31 Table 6-8. Repairing the C094 MAIN Board Assembly ……………….. . 6-34 Epson FX-870/1170 6-iii[…]

  • Page 116: Epson FX-870/1170

    Principles of Operation 6 This chapter explains the mechanical and electrical operations of the FX-870/1170. At the end of the chapter, there are tables for component-level diagnosis of the main logic board and the power supply board. Printer Mechanism Operation This section describes the FX-870/1170 printer mechanism and explains how the printer w[…]

  • Page 117: Epson FX-870/1170

    Principles of Operation 4. As soon as the current through the coil is switched off, the force induced in the coil rod stops. The plate then returns to its original position (the position assumed before the coil was energized) through the action of the plate spring. After the dot wire hits the platen, the rebounding force of hitting the platen works[…]

  • Page 118: Epson FX-870/1170

    Principles of Operation Carriage Mechanism The timing belt is connected to the lower side of the carriage. With the printhead installed, the carriage moves in either direction along the carriage guide shaft. The carriage (CR) motor, a stepping motor, drives the timing belt, which moves the carriage. The home position (HP) sensor detects the home po[…]

  • Page 119: Epson FX-870/1170

    Principles of Operation Platen Gap Adjustment The platen gap (the gap between the platen and the printhead) can be adjusted to allow the printer to use paper of different weights or thicknesses. When the platen gap adjust lever is moved forward or backward, the carriage guide shaft rotates. This rotation moves the carriage either toward or away fro[…]

  • Page 120: Epson FX-870/1170

    Principles of Operation Paper Handling Mechanisms During normal operation, paper is fed to the printer, advanced to the specified position, and ejected from the printer. These paper handling operations are performed by various paper handling mechanisms, such as the tractors, platens, rollers, and gears. This section describes the printer’s paper […]

  • Page 121: Epson FX-870/1170

    Principles of Operation Paper Advance Mechanisms — — This section describes how the friction advance and tractor advance mechanisms work to advance the paper through the printer. Friction Advance Method The paper is held between the platen and paper guide rollers and between the paper tension roller and paper tension unit cover . The paper feed (PF[…]

  • Page 122: Epson FX-870/1170

    Principles of Operation Push Tractor Method When the push tractor method is used with the rear entrance, the torque generated by the PF motor is transmitted to the push tractor gear through the PF motor pinion gear, paper advance reduction gear, and tractor reduction gear. When the PF motor pinion gear turns in the direction of the black arrow, the[…]

  • Page 123: Epson FX-870/1170

    Pthcipk of Operation — Paper (Continuous) Paper Tension Roller Paper Tension Roller Gear / Platen Gear PF Motor P&h Tractor ‘Push Tractor Gear Figure 6-6. Push Tractor Operation Using the Front Paper Entrance 6-8 — Epson FX-870/I 170[…]

  • Page 124: Epson FX-870/1170

    Principles of Operation Pull Tractor Method The pull tractor advances paper in basically the same way as the push tractor. The push tractor is installed at the paper entrance and pushes the paper into the printer mechanism. The pull tractor, however, is installed at the paper exit and pulls the paper out of the printer mechanism. As the result, the[…]

  • Page 125: Epson FX-870/1170

    Principles of Operation Push-pull Tractor Method The push-pull tractor method is a combination of the push and pull tractor methods. Two tractors are used to advance the paper: one at the front paper entrance and the other at the rear paper entrance. They operate simultaneously to push and pull the paper through the printer mechanism. Figure 6-8 il[…]

  • Page 126: Epson FX-870/1170

    Principles of Operation I Paper Drive Roller / ctor Reduction PF Motor Pinion Gear Gear PF Motor PaDer Advance Reduction Gear l . l . — ’ Platen Gear Paper Drive Roller Gear ush Tractor Gear Push Tractor Figure 6-9. Push-pull Tractor Operation Using the Front Paper Entrance Epson FX-870/1170 6-11[…]

  • Page 127: Epson FX-870/1170

    Principles of Operation The Release Lever The release lever is used to select friction or tractor feeding or to release the paper. When the release lever is set to the friction feed position, the paper guide rollers are pressed against the platen. When it is set to one of the tractor feed positions, this pressure is released and the paper guide rol[…]

  • Page 128: Epson FX-870/1170

    Principles of Operation Paper Paths This section describes the various paths the paper follows through the printer mechanism. These paper paths are divided into four groups, depending on the entrance the paper is fed from (top, rear, bottom, or front). Note : The front paper-end (PE) sensor is located in front of the printer mechanism and the rear […]

  • Page 129: Epson FX-870/1170

    Prlnclples of Operatbn Rear Entrance Figures 6-13 and 6-14 show the paper paths for tractor feeding using the rear entrance. The rear entrance can be used for any of the following paper feed methods: push tractor feed, pull tractor feed, or the push-pull tractor feed. When the rear entrance is used, the rear PE sensor senses when paper is out. Pape[…]

  • Page 130: Epson FX-870/1170

    Principles of Operation Paper (Continuous) Printhead Paper Guide Rollers Figure 6-15. Paper Path for Push-pull Tractor Feeding Using the Rear Entrance Bottom Entrance Figure 6-16 shows the paper path for tractor feeding using the bottom entrance. The bottom entrance is used only for pull tractor feeding. When the bottom entrance is used, the fron[…]

  • Page 131: Epson FX-870/1170

    Principles of Operation Front Entrance — Figures 6-17 through 6-20 show the paper paths for the front entrance. The front entrance can be used with any of the following paper feed methods: friction feed, push tractor feed, pull tractor feed, or push-pull tractor feed. When the front entrance is used, the front PE sensor senses when paper is out. Pa[…]

  • Page 132: Epson FX-870/1170

    Principles of Operation — Paper (Continuous) Front PE Sensor Lower Paper Guide Roller Figure 6-19. Paper Path for Pull Tractor Feeding Using the Front Entrance Paper Drive Roller Front PE Sensor Tower Paper Guide Roller Push Tractor Figure 6-20. Paper Path for Push-pull Tractor Feeding Using the Front Entrance Epson FX-870/1170 6-17[…]

  • Page 133: Epson FX-870/1170

    Principles of Operation Ribbon Advance Mechanism The ribbon is held between the ribbon advance roller (ribbon driving gear) and the ribbon pressure roller. When the carriage moves on the shaft, the timing belt turns the belt driven pulley, and the torque is transmitted to the ribbon driving gear through the gear train. The ribbon driving gear rotat[…]

  • Page 134: Epson FX-870/1170

    Principles of Operation Power Supply Operation The FX-870/1170 printer is powered by a 120 VAC power supply board (C076 PSB board assembly). This board outputs the DC current necessary to drive the printer control circuits and the printer drive mechanism. Fuse Fl(2.5 A/125 V) is used to protect the power supply circuit of the board in case of a sho[…]

  • Page 135: Epson FX-870/1170

    Pfinciples of Operation The +5 VDC voltage-overload protection circuit cuts the +5 VDC line output ifthe voltage exceeds +7 VDC. It stops the operation of the switching circuit and then the output of +35 VDC voltage. The +35 VDC line has a voltage-overload protection circuit and a voltage drop protection circuit. The +35 VDC voltage-overload protec[…]

  • Page 136: Epson FX-870/1170

    a Filter Circuit AC input Principles of Operation Secondary — I I I Full Wave Pectification — Smoothing — $M$ing Smoothing Circuit Circuit . . i I Circuit I I , t +5v Switching Regulator .~~~-~~~~~-~~~~~ +5v Over Current Control Circuit —————- +5v _ Photo- + +35 V Line coupler Detector Circuit I ZD51 +t +35 V Line Voltage Overload Prote[…]

  • Page 137: Epson FX-870/1170

    Principles of Operation Control Circuit Operation The control circuit consists of two circuit boards: the CO94 MAIN (main control circuit board) and the CO94 PNL (control panel circuit board). This section describes the operation of these boards. Control Circuit Operation Overview The CPU on the CO94 MAIN is an 8-bit TMP9OCO41F microprocessor (9.83[…]

  • Page 138: Epson FX-870/1170

    Principles of Operation Figure 6-24 shows the data flow from the host computer to the printhead. Data sent fkom the host computer is converted to image data and transmitted to the printhead through the gate array. CPU I Host computer Image data transfer L I Gate Array (EOSABGYA) + RAM Input buffer Figure 6-24. Data Flow Epson FX-87W1170 6-23[…]

  • Page 139: Epson FX-870/1170

    Principles of Operation Table 6-5 lists the fimctiona of the main componente of the CO94 MAIN. Table 6-5. Functions of Main Components of CO94 MAIN IC or Circuit Functions TMP90C041 F (2Cl) Receives data from the host computer and loads it to the input buffer in RAM. Expands the input data held in the buffer to create image data. Loads the image da[…]

  • Page 140: Epson FX-870/1170

    Principles of Operation Reset Circuit The control circuits are initialized when the RESET signal is issued. The reset operation occurs under these two conditions: 1. Power on reset Immediately after the power is turned on, +35 VDC is rapidly generated. Because it takes a moment for the voltage at ZD2 to reach +31.5 V, the voltage at the DISC termin[…]

  • Page 141: Epson FX-870/1170

    Principles of Operation Sensor Circuits The FX-8’70/1170 printer has the following sensors: CRHOME, PE (FRONT), PE (REAR), PG (platen gap), RELEASE LEVER(RL), and HEAD TEMPERATURE. All the sensors are mechanical switches, except the rear PE sensor, which is a photo diode, and the HEAD TEMPERATURE sensor, which is a thermistor. — In addition to th[…]

  • Page 142: Epson FX-870/1170

    Principles of Operation Carriage Motor Drive Circuit The carriage motor drive circuit controls the CR motor. An open loop, constant-current drive arrangement runs the CRmotor. 2-2 and 1-2 phases are used to excite the motor. A 2-2 phase step is equivalent to a 1-2 phase step doubled. Table 6-6 describes the motor drive modes. The CR motor drive cir[…]

  • Page 143: Epson FX-870/1170

    Principles of Operation Paper Feed Motor Drive Circuit The PF motor, a stepping motor, advances the paper at a minimum advance rate of l/216 inch. This motor is a 2-2 phase, constant-voltage, drive motor. CPU ports (P70 tc P73) are used to control the PF motor. Phase data for the PF motor is output through these ports. PFA to PFB are turned on or o[…]

  • Page 144: Epson FX-870/1170

    Principles of Operation Printhead Drive Circuit The printhead drive circuit receives two types of signals: image data and the pulse length control signals. Image data is created in the CPU, transferred to the gate array, and latched to the printhead. The pulse length control signal is set by the CPU. The pulse length is adjusted referring to the vo[…]

  • Page 145: Epson FX-870/1170

    Principles of Operation E 2 PROM Control Circuit Figure 6-31 shows the E2PROM control circuit. The E2PROM is non-volatile memory containing information, such as the top-of-form position. Because the E2PROM is a serial I/O device, the gate array converts the parallel data (sent fiorn the host computer) into serial data. — SCL B5A66YA (IC4) CPU (IC2C[…]

  • Page 146: Epson FX-870/1170

    Principles of Operation Component Repair Information (for Dealers Outside the U.S.) This portion of the manual provides additional information for servicers outside the U.S. who need to make repairs to components on the circuit boards. (U.S. service technicians can ignore these pages.) Repairing the C076 PSB Board Assembly This section gives instru[…]

  • Page 147: Epson FX-870/1170

    Principles of Operation Table 6-7. Repairing the C076 PSB Board Assembly (Continued) Problem cause Checkpoint Solution The voltage of the Q3, ICl, PCl, Check the voltage waveforms at Q3. Replace Q3, t35 V line is below PC2 or ZD51 is ICl, PCl, the specified value. bad. PC2 or zD51. Q2 is bad. Check the voltage waveforms at Q2. Replace Q2. 6-32 Epso[…]

  • Page 148: Epson FX-870/1170

    Principles of Operation Table 6-7. Repairing the C076 PSB Board Assembly (Continued) Problem CalIS@ Checkpoint Solution he +5 V line is The +35 V line is Check the +35 V line. Refer to the ad. bad. items described above. IC51 is bad. Check the oscillation waveform (IC51 pin 5) and the Replace switching waveform (IC51 pin 8). IC51. Q51 or Q52 is bad[…]

  • Page 149: Epson FX-870/1170

    Principles of Operation Repairing the C094 MAIN Board Assembly — This section gives instructions for repairing the C094 MAIN board and describes various problems, symptoms, likely causes, checkpoints, and solutions. The checkpoint column shows proper waveforms, resistance values, and other information for each component of the C094 MAIN board. Tabl[…]

  • Page 150: Epson FX-870/1170

    Principles of Operation Table 6-8. Repairing the C094 MAIN Board Assembly (Continued) Problem Symptom Cause Checkpoint Solution Abnormal The CPU operation at does not power on. operate properly. The CPU is Check the oscillator signal (IC2Cl pin 27 or If the signal is defective. pin 28). not correct, replace IC2Cl. Otherwise, replace CRl. Carriage T[…]

  • Page 151: Epson FX-870/1170

    Principles of Operation Table 6-8. Repairing the C094 MAIN Board Assembly (Continued) Problem Symptom Cause Checkpoint Solution Self-test The printer IC4 is Check the head pulse signal at pin 31 (input) Replace IC4. printing does not print defective. and pin 63 (output). abnormal the self-test. Self-test printing abnormal. A particular dot fails to[…]

  • Page 152: Epson FX-870/1170

    Principles of Operation Table 6-8. Repairing the C094 MAIN Board Assembly (Continued) Problem Symptom Cause Checkpoint Solution Paper feed The printer ICl is Check the input signal (pin 2) and the output Replace ICl abnormal. does not feed defective. waveform (pin 3). the paper at all or the paper feed is irregular. Incorrect Data is Either IC4 or […]

  • Page 153: Epson FX-870/1170

    Reference Materials Chapter 7 Reference Materials Connector Summar y ……………………………………………………………………… 7-1 Circuit Diagram s ………………………………………………………………………….. 7-5 Circuit Board Component Layout s ……………………………………………..[…]

  • Page 154: Epson FX-870/1170

    Reference Materials 7 Connector Summary Figure 7-1 illustrates the interconnection of the primary components. Table 7-1 summarizes the functions and sizes of the connectors. AC IN 7 4 CNl (CN2k CO76 PSB BOARD ASSEMBLY L I CO94 MAIN BOARD ASSEMBLY (1 1 CN4 t 1 CN6 1 +iiq 1 CN13 1 I I + I PRINTER MECHANISM I PF MOTOR ASSEMBLY t I CO94 PNL BOARD ASSEM[…]

  • Page 155: Epson FX-870/1170

    Reference Materials Table 7-1. CO94 MAIN Board Connector Summary Board CO94 MAIN Board Assembly Connector CNl CN2 CN3 CN4 CN5 CN6 CN7 CN8 CN9 CN12 CN13 CN14 Function Host Computer 36 Optional Interface 36 Front PE Sensor 2 (Blue) Release (RL) Sensor 2 (White) Gap (PG) Sensor 2 (Black) PF Motor Assembly 6 Home Position (HP) Sensor 2 (Yellow) Printhe[…]

  • Page 156: Epson FX-870/1170

    Reference Materials See Table 1-14 for CNl (Centronics interface) signal functions and pin assignments. Table 7-2. CN2, Optional I/F Table 7-3. CN3, Front PE Sensor (CO64 MAIN Hoard Assembly) (CO94 MAIN Hoard Assembly) No. I I l/O Signal Name Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36[…]

  • Page 157: Epson FX-870/1170

    Reference Materials I W. l/O Signal Name Function 1 — +5 +5 VDC 2 0 READY READY LED 3. 0 STAT STAT LED ( Not equipped) 4 0 FONT FONT LED 5 0 COND ‘CONDENSED LED 6 I PAUSE PAUSE Button 7 I FONT FONT Button 8 I PFEED PAPER FEED Button 9 I OPERA OPERATE Button 10 — GND Signal Ground 7-4 Epson FX-870/1170 Table 7-8. CNS, Printhead Table 7-11. CN13, C[…]

  • Page 158: Epson FX-870/1170

    Reference Materials Circuit Diagrams 0,‘ B:,& OTC1132 sE:IOK I A /I/II/II III ,,,, I Il/IIl/II I I I I I I ’ II Head Conrrol /IIm O,‘” Ill i — Pf Molar Control CNL LE<ER ( CYS G&P ( CN3 PEFRNT ( CNS PERAEFI ( Pf Motor Ower Figure 7-2. C094 MAIN Board Assembly Circuit Diagram (Annotated) 7-5 Epson FX-870/1170[…]

  • Page 159: Epson FX-870/1170

    Reference Materials . I = — — — — — — Figure 73. C094 MAIN Board Assembly Circuit Diagram 7-6 Epson FX-87CY1170[…]

  • Page 160: Epson FX-870/1170

    Surge Current ProtectIon 2.5A,125V CNI L IOO-12OVAC C6 0 I I 0 O.,u,‘AC250V FG , R4 o.3gs R7 16K _ iV Over I CB T 220Op/lKV _ 3 ZJI X1 : HEAT SINK I P *, 051 ‘-9; FMP-G125 t5V DC Reourator Clrcult LPZOl-2R5SO R RW II tection II C58 O.Olu 1 I 7 ct-42 PSC +35V/O.?A -I F F , +SV/I.OA 3 Psc PO. 7A F F , +5V/l.OA c57 1 L7OOp/ IKV !Or 7 FG C076 PSB P[…]

  • Page 161: Epson FX-870/1170

    CN2 PSC CB T’ I PT-0’ THI Bohm/25C C6 0 II I 4, 0.1 u/ACZ%,V It- = F-G ,I- !, (L2) 2200p/lKV _ 3’ R5 = lOK/ 2w Cl2 — 01 L70pRKV AGOI _ 2. C r CSl 33ooun1 5ov C52 33oou 5ov a_ C56 — 22oop 1 KV z%p 22”dP ‘-T t- i FG ELF160290M -2- O.Z2u/AC250V 1 c.57 1 A7oOp/ 1KV ? FG I- Fl 2.5A,‘125V *l : HEAT SINK !N! 100-120VAC CO76 PSB Power Supply […]

  • Page 162: Epson FX-870/1170

    Reference Materials CNI GND *OPERA 0 SW4 , *PAPER FEED t&——h “’ 0 *FONT rPAUSE/l-OFF CONDENSED FONT STATUS o7 *SW3 0 o6 ij-L SW2 0 5 LED3 N 0 4 1/1 LED2 N I 2 L/I LED1 N 41 Note: The STATUS LED is not implemented in this model. Figure 7-6. CO94 PNL Board Assembly Circuit Diagram Epson FX-870/1170 7-9[…]

  • Page 163: Epson FX-870/1170

    Reference Materials Circuit Board Component Layouts PF Motor e.m PF Motor Parallel hlterface /CNl PG Sensor c cN5 Ett CN7 — PE Rear/ %i / PE Front EY Y I I Printhead P&iead zeyi Drivers EN3”” CN12 CN2 — Figure 7-7. CO94 MAIN Board Assembly Component Layout !z?Rm 7-10 Epson FX-870/1170[…]

  • Page 164: Epson FX-870/1170

    Reference Materials n EEm EPS-I I MODEL 1 Figure 7-8. CO76 PSB Board Assembly Component Layout Epson FX-870/1170 7-11[…]

  • Page 165: Epson FX-870/1170

    Reference Materials 6 I.202 lmal pJ z- fi L2DJ cl LLD I cl—-, -I I I : : CO94 PNL Sw2 ASSY 2006160 00 I I q 0 FL+ i 16 I A,—4 SW4 SW3 SWI CMK- 54×1 Am Note: The STATUS LED is not implemented in this model. Figure 7-9. CO94 PNL Board Assembly Component Layout 7-12 Epson F&870/1 170[…]

  • Page 166: Epson FX-870/1170

    Reference Mater& Outline Drawings I r — I 380 ’ I I I I i I Figure 7-10. FX-870 Case Outline Drawing Epson FX-870/1170 7-13[…]

  • Page 167: Epson FX-870/1170

    Reference Materials I L I r-r-=- I I r- 01 — — — z — Figure 7-11. F’X-1170 Case Outline Drawing 7-14 — Epson FX-870/1170[…]

  • Page 168: Epson FX-870/1170

    Index Symbols +35 V 3-1, 6-19, 6-25, 6-28, 6-29 line 6-31, 6-32 monitor circuit 6-26 detector 6-19 +5 V 3-1, 3-4, 6-19, 6-25, 6-28 line 6-33 136-column 1-10, 4-8, 5-2 80-column 1-8,4-8,5-2 A abbreviations 4-3 Abicomp 1-21 AC power 3-1, 4-1, 6-19 outlet 2-1, 6-31 source 6-20 accessories 1-34 ACKNLG 1-13 addresses vii adjust 4-1 lever 1-24, 3-2, 4-11[…]

  • Page 169: Epson FX-870/1170

    Index blinking 1-19 bond paper 1-7 bottom entrance 6-9, 6-15 box driver 5-1 BRASCII 1-21 buffer 1-1, 1-13, 1-15, 1-17, 1-22, 1-24, 1-26, 6-24 full printing 1-24 bushing 5-1 BUSY 1-13, 6-29 /READY 3-8 buttons 1-17 buzzer 1-27, 3-6, 6-2 C C076 PSB board 1-28, 1-30, 4-23, 4-24, 6-19, 6-31, 6-32, 6-33 C094 MAIN board 1-28, 1-29, 3-6, 3-7, 3-18, 4-9, 4-[…]

  • Page 170: Epson FX-870/1170

    Index common 3-2, 3-3 communications errors 3-7, 3-8 component 1-28, 6-34 layouts 7-10 repair 6-31 condensed 1-12, 1-17, 1-18, 1-19 connector 1-14, 3-1, 3-3, 4-9, 4-12, 4-23, 4-24, 7-2 locations 3-18 summary 7-1 continuity 3-1, 3-4 continuous paper 1-1, 1-5, 1-9, 1-17,6-5 control circuit 6-22 codes 3-21 through 3-24 panel 1-17, 1-22, 1-23, 1-28, 1-[…]

  • Page 171: Epson FX-870/1170

    Index dot 6-1 wires 3-3 double-space 3-7, 3-17 draft 1-13, 1-18, 1-19,5-4 drive circuit 6-24, 6-27, 6-28,6-29 roller assembly 5-6 signals 6-1 voltage 6-1 driver 3-2, 3-4, 3-6 carriage motor 3-4 paper feed motor 3-4 printhead 3-4 selections 1-33 driving wires 6-1 dust 5-5 duty 1-24 cycle 1-11, 2-4 E ETROM 1-27, 2-1, 3-5, 3-7,5-3, 6-24 control circui[…]

  • Page 172: Epson FX-870/1170

    Index font 1-12, 1-17, 1-18, 1-19, 1-20, 1-21, 1-22, 5-4 form feed 1-24 frame 4-11 ground connector 2-2 left 4-11, 4-18 right 4-11 France 1-21 frequency range 1-11 friction 6-5, 6-6 feed 1-4, 1-5, 6-13, 6-16 mechanism 1-5 front cover 4-5 entrance 6-7, 6-8, 6-10, 6-11,6-16, 6-17 feed 1-35 insertion 1-8 PE sensor 1-24, 3-2, 3-20,4-19,6-13,6-15, 6-16,[…]

  • Page 173: Epson FX-870/1170

    Index pulse signal 6-36 temperature 6-26 thermistor 1-19,3-5 heat 6-2 sink 4-24,6-31 hex dumps 1-23,3-21, 3-23 codes 3-21 through 3-24 high capacity cut-sheet feeder 1-3 duty printing 1-24 speed draft 1-1, 1-13 voltage error 1-19,3-5 home position 1-26,2-1,3-2,3-6,3-7,3-19,4-18,6-3,6-4,6-26,7-3 sensor 1-26,3-2, 3-6,3-7,3-19, 4-18, 6-26, 7-3 hooks 4[…]

  • Page 174: Epson FX-870/1170

    Index italic 1-21, 3-8 Italy 1-21 L labels 1-4, 1-5, 1-6 layout 1-29 diagram 3-18, 7-10 LEDs 1-19, 2-1 left frame 4-11, 4-18 length 1-6 lever adjust 1-24, 3-2,4-11, 5-1, 6-4 release 1-5, 1-24, 1-27, 3-2, 3-5, 4-13, 4-14, 5-1, 6-6, 6-7,6-12,6-26 life 1-33 line spacing 1-4, 1-26 lines 1-23 load paper 3-7 loading 1-24 position 1-18, 1-27 logic level 1[…]

  • Page 175: Epson FX-870/1170

    Index N NLQ 1-13, 1-18, 1-19, 5-4 noise 1-15, 6-19 non-volatile memory 1-18, 1-20, 1-22, 1-23, 1-26, 6-30 null modem cable 2-2 O ohms 3-2, 3-3 oil 5-5 pad 5-6 open 3-2, 3-4 OPERATE 1-17, 3-1 operating modes 1-33 optional I/F 1-16,7-3 boards 1-1, 1-3, 3-7,3-8,4-23 oscillation waveform 6-33 oscillator 6-35 oscilloscope 4-1 outlet 2-1, 6-31 outline dr[…]

  • Page 176: Epson FX-870/1170

    Index tension roller 6-6, 6-7 gear 6-6 unit 1-5,6-9 thickness 1-25 width 1-8 parallel 1-34, 3-6 cable 2-2 interface 1-3, 1-13, 2-1, 6-29 parallelism adjustment bushing 3-6, 4-11, 5-1, 5-2,5-3 parameters 1-22 parity 2-4, 3-7 Parts Order Services 4-24 path l-l, 6-13, 6-14, 6-15 PAUSE 1-17, 1-18, 1-19, 1-21, 1-22, 1-24, 5-4 /TEAR OFF 1-17 PE (paper en[…]

  • Page 177: Epson FX-870/1170

    Index consumption 1-11 on 1-22, 3-6, 3-7, 3-9, 3-10, 6-34 default settings 1-13, 1-22 hours 1-11 reset 6-25 sequence 2-1 outlet 2-1,6-31 supply 1-28, 1-30, 3-1, 3-4, 4-1, 4-4, 4-23, 4-24, 6-19, 6-31 through 6-33, 7-4 voltage 3-5, 3-6 precautions 4-1 preventive maintenance 5-5 primary circuit 3-1, 4-1, 4-4, 6-20, 6-31 print buffer 1-1, 1-13, 1-15, 1[…]

  • Page 178: Epson FX-870/1170

    Index. gears 3-6, 5-6, 6-18 READY 1-17, 1-19 rear entrance 6-7, 6-10, 6-14 feed 1-35 frame 4-11 paper guide 4-20 PE sensor 1-24, 3-2, 3-20, 4-19, 6-13, 6-14, 6-26, 7-4 recycled paper 1-6, 1-7 reduction gear 6-6, 6-7 reference voltage 6-26 release error 3-5 lead 4-20 lever 1-5, 1-24, 1-27, 3-2, 3-5,4-13, 4-14, 5-1, 6-6, 6-7, 6-12, 6-26 sensor 3-19, […]

  • Page 179: Epson FX-870/1170

    Index schematics 7-5 through 7-9 screwdriver 4-1 screws 4-3 secondary circuit 2-1, 3-1, 4-1, 4-4, 6-20 self-test 1-22, 2-1, 3-6, 6-36 sensor 1-31, 3-1, 3-2, 3-6, 3-7, 4-18, 4-19, 4-20, 6-3, 6-19 circuits 6-26 front PE 1-24, 3-2, 3-20, 4-19, 6-13, 6-15, 6-16, 6-26, 7-3 HP 1-26, 3-2, 3-6, 3-7, 3-19, 4-18, 6-3, 6-26, 7-3 locations 3-19 rear PE 1-24, 3[…]

  • Page 180: Epson FX-870/1170

    Index T tear-off 1-17, 1-18, 1-19, 1-20, 1-24, 1-27 temperature 1-6, 1-7, 1-11, 2-1, 6-2, 6-26 tension spring 4-12 test pins 3-2 points 3-1 through 3-4 tests 3-1 text mode 1-12 thermal protection 1-24 thermistor 2-4, 3-3, 3-5, 6-2, 6-26 thick paper 1-4, 1-5 thickness 1-6, 1-7, 1-8, 1-25, 4-1,6-4 gauge 4-1,5-2 thin paper 1-4 timeout 2-4, 3-8 timers […]

  • Page 181: Epson FX-870/1170

    Index voltage 1-19, 1-24, 3-1, 3-5, 3-6 change 6-2 detector 6-19 drop protection circuit 6-20 error 1-19, 1-27, 3-5 input 6-19 monitor circuit 6-26 output 6-19 overload protection circuit 6-20 range 1-11 supply 6-19 volts 3-1 Vref circuit 6-26 W wall switches 2-1 WARNING 4-1, 4-4, 4-24, 3-1 washers 4-3 waveform 6-31, 6-32, 6-33, 6-34, 6-37 weight 1[…]

Источник

Руководства Epson FX-1170 Размер файлов: 1239 KB, Язык: English, Формат: pdf, Платформа: Windows/Linux, Дата: 2017-01-26

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Руководства для Epson FX-1170

  • Руководство пользователя (User manual)
  • Руководство по сервисному обслуживанию (Service manual)
  • Руководство по ремонту (Repair manual)
  • Перечень комплектующих (PartList)
Источник

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