BENQ Q7T4 SCH
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SERVICE MANUAL
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Relevant MONITOR forum topics:
Üdv mindenkinek!
Lenne egy olyan problémám a témában megjelölt monitorral, hogy ha bekapcsolom, csak felvillan a led egy pillanatra majd kialszik. Ennyit csinál és nem többet. Csöveket nem gyújt, képet nem ad erre a 2mp-re sem. Szétszedtem és ittvan elöttem a tápja. Az Elkók jónak tűnnek. Ötlete valakinek? én a 1200ap40-es pwm ic-re tippelek…De feleslegessen nem akarom megrendelni. vélemény?
Sziasztok!
Segítséget szeretnék kérni egy BENQ Q7T4 monitor javításához. A monitor kb. 20mp után kikapcsol.(lekapcsolja(megvédi) magát a táp). A szekunder körben voltak púpos kondik, minden kondit kicseréltem,a tápok rendben is vannak. Ha nem dugok rá monitorkábelt, akkor megjelenik a szokásos üzenet, majd elmegy szundiba, de nem kapcsol ki. Ha az invertert direktbe kötöm, akármeddig megy szépen, ezért gondolom, hogy a táppanel, és az inverter rendbe van. Ha rádugom a monitorkábelt, 20mp után kikapcsolja a tápot.
A scalleren nem látok semmi gondot, a zénerek, a védődiódák, stb rendbe vannak.
Nem találok melegedő alkatrészt, pedig a 400V-os kondin elfogy a feszültség, és a táp lekapcsol. De miért csak akkor, ha rádugom a monitorkábelt? (3db monitorkábellel is próbáltam)
Találkozott már valaki ilyennel?
Üdv: gapati
Sziasztok !
Benq Q7T4 LCD monitorhoz keresnék táp-inverter panelt.
Köszi: Pgimv
Sziasztok!
Segítségeteket, tanácsotokat szeretném kérni! Adott egy Benq FP71G típusú monitor, aminek időszakosan elmegy a háttérvilágítása.Előzőleg ledre volt átalakítva de az TFT panel tönkrement. Most kapott egy másikat kompletten , amiben még benne van az eredeti háttér világításhoz tartozó CCFL cső.(Az eredeti inverterével tökéletesen működött).Rátettem a Benq invertert de ugyan olyan hiba van rajta , tehát nincs háttér fény vagy csak kis ideig. A kondikat kimértem , jók.Azt viszont észrevettem hogy ha gyújtanak illetve világítanak a csövek akkor az invertertáp 18v ról lecsökken 13,5vra.A donor monitor invertere viszont szépen visz minden a csövet. (ott a Scaler panel szált el)A Tanyán fenn van a rajz ITT. Sajnos nagy mérete miatt nem tudtam közvetlenül ide tölteni.Végső megoldásként ledre váltom de egyenlőre szeretném eredi állapotban odaadni az unokáknak.
Üdv Belfi!
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Руководства BenQ Q7T4-FP71G Размер файлов: 7530 KB, Язык: English, Формат: pdf, Платформа: Windows/Linux, Дата: 2016-04-07
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Руководства для BenQ Q7T4-FP71G
- Руководство пользователя (User manual)
- Руководство по сервисному обслуживанию (Service manual)
- Руководство по ремонту (Repair manual)
- Перечень комплектующих (PartList)
File Specifications:1483/1483793-q7t4fp71g.pdf file (28 May 2023) |
Accompanying Data:
BenQ Q7T4-FP71G Monitor PDF Service Manual (Updated: Sunday 28th of May 2023 11:51:20 PM)
Rating: 4.8 (rated by 45 users)
Compatible devices: E Series, Q7T3 Series, PL4901, FP93VW, SH3741, RL2450HT, FP73E, DV3250.
Recommended Documentation:
Service Manual (Text Version):
(Ocr-Read Summary of Contents of some pages of the BenQ Q7T4-FP71G Document (Main Content), UPD: 28 May 2023)
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66, BENQ LCD Q7T4(FP71G) Spare Parts List P/N: 99.L1C72.ASE ITEM DESCRIPTION PART NO. LOCATION 1 PCBA I/F BD MI AUO M170EG01 55.L1C01.001 2 IC CONTROLER RTD2023 QFP 128P 71.02023.00E U3 3 IC EEPROM AT24C02N-10SI-1.8SON 72.02402.C01 U1 4 IC EEPROM AT24C04N-10SI-2.7SON 72.02404.N01 U4 5 IC VR G950T65U SOT-223 74.95065.03C U6 6 IC FLASH MTV312MV64 (AJ) PLCC44 71.31264.A03 U5 7 PCBA SPS BD MI QT74 EG01 55.L1C02.001 8 PCBA CTRL BD MI Q7T4 5…
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30, Q7T4-FP71G LCD Monitor Service Guide Circuit Operation Theory 1 Confidential I. Introduction: The Q7T4 is a 17” SXGA (1280×1024) , 16.2M colors(R, G, B 6-bit data+FRC data) TFT LCD monitor. It’s an analog only interface LCD monitor with a 15 pins D-sub signal cable. it’s compliant with VESA specification to offer a smart power management and power saving function. It also offe…
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11, Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 11 Confidential Assembly IF board and Power Board
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26, Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 26 Confidential Assembly Base and Rear cover
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13, Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 13 Confidential Assembly IF board and FFC
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59, 5 5 4 4 3 3 2 2 1 1 D D C C B B A A 5V_PANEL 5V_PANEL +5V +5V PANEL_ON RXOIN0- RXOIN0+ RXOIN1- RXOIN1+ RXOIN2- RXOIN2+ RXOCKIN- RXOIN3- RXOIN3+ RXOCKIN+ RXEIN0- RXEIN0+ RXEIN1- RXEIN1+ RXEIN2- RXEIN2+ RXECLK- RXECKIN+ RXEIN3+ RXEIN3- Title Size Document Number R e v . Date: Sheet o f Project Code Reviewed By Approved By Prepared By Model Name PCB P/N PCB Rev. OEM/ODM Model Name 99.L1C72.000-C3-304-001 INTERFACE BOARD …
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36, Q7T4-FP71G LCD Monitor Service Guide Circuit Operation Theory 7 Confidential Fig. 7 A-3.) Control board introduction: The main parts of the control board are a push button, and a LED. (a) Push button: It’s a simple switch function, pressing it for “ON” to do the auto adjustment function, releasing it for “OFF” to do nothing. (c) LED: It indicates the DPMS status of this LCD monitor; green ligh…
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52, Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 11 Confidential Input Select D-sub DVI √ Sharpness √ Display Information For input timing √ Volume √ Mute √ Hot key for Brightness √ Hot key for Contrast √ Hot key for Volume √ Hot key for Mode √ * The detailed firmware functions’ specification, please refe…
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48, Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 7 Confidential 3. Operational & Functional Specification 3.1 Video performance Item Condition Spec OK N.A Remark Resolution Any input resolution modes which are under 1280 x 1024 1280 x 1024 √ Contrast ratio 450:1 (typ.) √ Brightness At R/G/B saturated condition 260 cd/m 2 (typ.) @ 7.5mA √ Response time…
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9, Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 9 Confidential Add FFC
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61, BenQ Q7T4-FP71G 5 5 4 4 3 3 2 2 1 1 D D C C B B A A Title Size Do cu m en t Nu mbe r R e v. Da te : Sh eet o f Pr oj ec t Code Re vi ew ed B y Ap p ro ved B y Pr ep ar ed By Mo de l Nam e PC B P/N P C B R ev . OE M/O DM Mod el Nam e 99 .L 1C 72 .000 -C3-30 4-001 IN T ER FA CE B OAR D 6 6 AL LE N P C LEE DA VE N WU 48 .L 1C 01.S0 2 S02 AN GE L HU <Size>…
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63, Q7T4-FP71G LCD Monitor Service Guide Trouble Shooting 2 Confidential 2. BUTTON function: 2.1 Control Board OSD is not working Yes Is control BD connecting? No Plug control BD then retry Yes Is bottom switch normally? …
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6, BenQ Q7T4-FP71G Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 6 Confidential Note A: Byte4 (cksum) = Byte1 + Byte2 + Byte3 Note B: Data = The value write to MCU or EEPROM Note C: XX = don’t care, any value (<=0xFF). When PC Host sends 0x7D command to MCU, MCU must return as following (2 bytes) Return Code R-Byte1 R-Byte2 Checksum error code FC AA N ormal return code the above Byte3 (/data) FC If normal return code …
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58, BenQ Q7T4-FP71G 5 5 4 4 3 3 2 2 1 1 D D C C B B A A L ED_ORG LE D_GRN D SU B_ S D A 3. 3V _ MCU +2.5V 3. 3V _ MCU 3. 3V _ MCU 3. 3V _MCU 3. 3V _ MCU 3. 3V _ MCU 3. 3V _ MCU 3. 3V _MCU 3. 3V _MCU +5V 3. 3V _MCU 3. 3V _ MCU L E D _O R G LE D_GRN SD A SC L KE Y _ L EFT K E Y _ R I GH T K E Y _ M E N U I — KEY PW _SW KE Y_EXIT SC L RESET RTD_SDO/ S DI SD IO1 SD IO2 SD IO3 RTD_SCLK A- d e t ect DSUB_SCL L E D _O R G LE D_GRN RTD_RESET RTD_SCSB PA N EL _ ON KE Y_EXIT KE Y _ L EFT VO L …
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33, Q7T4-FP71G LCD Monitor Service Guide Circuit Operation Theory 4 Confidential #1 EMI Filter This circuit (fig. 2) is designed to inhibit electrical and magnetic interference for meeting FCC, VDE, VCCI standard requirements. Fig. 2 #2 Rectifier and filter AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output voltage is 1.4*(AC input). (See Fig.3) Fig. 3
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BenQ Q7T4-FP71G User Manual
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BenQ Q7T4-FP71G User Guide
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BenQ Q7T4-FP71G PDF Manual
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BenQ Q7T4-FP71G Owner’s Manuals
Recommended: 2485 S1W, Electric cookers, Non-Stop Girl, TVM1635WPC, 2.0 10 HP
Links & Tools
Operating Impressions, Questions and Answers:
Table of Contents for BenQ Q7T4-FP71G:
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5 5 4 4 3 3 2 2 1 1 D D C C B B A A R + B+ G+ Hot- Plug D SU B_ S D A D SU B_ S D A PC 5V 3. 3V _ MCU 3. 3V _ MCU 3. 3V _ MCU 3. 3V _ MCU3. 3V _ MCU 3. 3V _ MCU 3. 3V _ MCU BL U E- R ED + V S Y NC BL U E+ H S YN C R ED — GR EE N + G R EE N — RX2+ RXC+ RX2- RX0+ RXC- RX1- RX1+ RX0- RX0M RX0P RX1M RXCP RXCM RX2P RX2M RX1P D VI PC 5V D VI _S C L D VI _S D A DVIPC5V D-detect RXC- DVI_SCL RX1- RX2+ RX1+ DVI_SDA RXC+ RX0+ RX0- RX2- P C 5V D SU B_ S C L DSUB_SCL D D C _WP_A D D C _WP_D A- d e t ect Title Size Doc u m e n t Number R e v . Date: Sh eet o f Pr o j e ct
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Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 29 Confidential
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Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 4 Confidential Item Condition Spec OK N.A Remark Input Voltage range Universal input full range 90~264VAC /47~63Hz √ Input Current range 90 ~ 264VAC < 2.0 Arms √ Power Consumption Normal “On” operation < 40 W √ LED: Green DPMS DPMS “Off” state < 1 W in power preferred mode, 115V < 2 W, 230V √ LED: Amber Inrush Current 110 VAC 220 VAC < 30 A (peak) < 60 A (peak) √ Cold
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Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 11 Confidential Input Select D-sub DVI √ Sharpness √ Display Information For input timing √ Volume √ Mute √ Hot key for Brightness √ Hot key for Contrast √ Hot key for Volume √ Hot key for Mode √ * The detailed firmware functions’ specification, please
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Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 21 Confidential
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Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 3 Confidential 5. Setup input timing , 32 -Gray pattern. To check if there are any abnormal display problems of preset timing modes . Check the following preset timings with General pattern: No. Mode H V 1 720×400 @ 70Hz 31.468 70.8 2 640×480 @ 60Hz 31.469 59.940 3 640×480 @ 75Hz 37.500 75.000 4 800×600 @ 60Hz 37.879 60.317 5 800×600 @ 75Hz 46.875 75.000 6 1024�
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Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 25 Confidential Add 1 screw
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Q7T4-FP71G LCD Monitor Service Guide Trouble Shooting 3 Confidential Backlight didn’t shine LED shined? 3.3V existed? IS I/F board connected? IC801 PIN 9 IS 15V?Replace Q761 PWM existed? (BLT_ADJ) Plug CN701 again or checking I/F BD Turn on level existed? (BLT_ON) Insert them again Check CN801, CN802 was pluged properly? Plug CN601 again or checking PW BD Replace IC801,Q805 Replace new fuse Replace new fuse Check IC701 OK? Checking F601 Broke? Check IC601 Vcc existed? Replace IC602, IC702,D701 or check I/F BD Replace IC7
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5 5 4 4 3 3 2 2 1 1 D D C C B B A A L ED_ORG LE D_GRN D SU B_ S D A 3. 3V _ MCU +2.5V 3. 3V _ MCU 3. 3V _ MCU 3. 3V _MCU 3. 3V _ MCU 3. 3V _ MCU 3. 3V _ MCU 3. 3V _MCU 3. 3V _MCU +5V 3. 3V _MCU 3. 3V _ MCU L E D _O R G LE D_GRN SD A SC L KE Y _ L EFT K E Y _ R I GH T K E Y _ M E N U I — KEY PW _SW KE Y_EXIT SC L RESET RTD_SDO/ S DI SD IO1 SD IO2 SD IO3 RTD_SCLK A- d e t ect DSUB_SCL L E D _O R G LE D_GRN RTD_RESET RTD_SCSB PA N EL _ ON KE Y_EXIT KE Y _ L EFT VO L
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Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 20 Confidential Assembly control board wire and IF board
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Q7T4-FP71G LCD Monitor Service Guide Alignment Procedure 8 Confidential Add 4 screw between panel and main BKT
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Автор
Тема: BENQ Q7T4 FP71G схема и сервис мануал (Прочитано 3608 раз)
aze1959
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BENQ Q7T4 FP71G схема и сервис мануал
« : 19 Сентября 2011, 23:38:01 »
схема и сервис мануал на английском BENQ Q7T4
圖和維修手冊
Schematic diagram and service manual
Diagrama esquemático y manual de servicio
आरेख और सेवा पुस्तिका
الرسم التخطيطي ودليل الخدمة
Diagrama esquemático e manual de serviço
схема и сервис мануал на английском BENQ Q7T4.pdf
(2198.97 КБ — загружено 148 раз.)
« Последнее редактирование: 10 Июля 2017, 17:14:21 от aze1959 »
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