1. Manuals
  2. Brands
  3. BenQ Manuals
  4. LCD TV
  5. VM2221
  6. Product service manual

BenQ VM2221 Product Service Manual

Hide thumbs Also See for VM2221:
Table of Contents

Advertisement

Quick Links

Download this manual
Applicable Country & Regions:
EU
Product Service Manual – Level 2
Service Manual for BenQ:
LTV/VM2221/PAL
9H.Y3375.POE
Notice:
For RO to input specific "Legal Requirement" in specific NS regarding to responsibility and liability
statements.
Please check BenQ's eSupport web site, http://esupport.benq.com, to ensure that you have the most
recent version of this manual.
First Edition (May , 2007)
© Copyright BenQ Corporation 2006. All Right Reserved.
1

Advertisement

Table of Contents
loading

Related Manuals for BenQ VM2221

Summary of Contents for BenQ VM2221

  • Page 1 For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. Please check BenQ’s eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (May , 2007)

  • Page 2: Table Of Contents

    Content Index INTRODUCTION ........................... 3 GENERAL DESCRIPTIONS........................5 RELATED SERVICE INFORMATION....................5 PRODUCT OVERVIEW.......................... 6 ........................6 PECIFICATION .......................... 12 ACKING ....................16 USTOMER CCEPTANCE LEVEL 1 COSMETIC / APPEARANCE / ALIGNMENT SERVICE ............. 18 ..................29 OFTWARE PGRADE ROCESS ......................

  • Page 3: Introduction

    Introduction This section contains general service information, please read through carefully. It should be stored for easy access place. Important Service Information RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS. The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a legal requirement by EU (European Union) for the global electronics industry which sold in EU and some counties also require this requirement.
  • Page 4 Compliance Statement Caution: This Optical Storage Product contains a Laser device. Refer to the product specifications and your local Laser Safety Compliance Requirements.

  • Page 5: General Descriptions

    General Descriptions This Service Manual contains general information. There are 2 levels of service: Level 1: Cosmetic / Appearance / Alignment Service Level 2: Circuit Board or Standard Parts Replacement Related Service Information BenQ Global Service Website:http://support.benq.com/front/benqmain.asp support Website:http://bqpgsr.benq.corp.com/customize/asplogin.asp...

  • Page 6: Product Overview

    Product Overview Specification 1. Introduction This specification describes a 22" diagonal LCD TV with aspect ratio of 16:10 which supports up to 1680 x 1050 format and can display true 16.7M colors ( 8-bit/color) . This LCD TV is very thin and completely free from electromagnetic distortion.
  • Page 7 - User controls: on/off switch, key pad with input select, menu, channel up, channel down, left( - ), right ( + ) - IR remote controller - Fancy OSD (on screen display) for user control interface - Color indicator for power on/standby (8).
  • Page 8 2. Operational Specification 2.1 Environment 2.1.1 Temperature: 0 °C ~ 40 °C Operating -20 °C ~ 60 °C Storage 2.1.2 Humidity: Operating 20% ~ 85% non - condensing Storage 10% ~ 90% non- condensing...
  • Page 9 Transportation Test Result Step Check Items NO.1 NO.2 FOS Test Packaged Random Vibration Test FOS Test Packaged Drop Test FOS Test Unpacked Vibration Test FOS Test Drop Height (bottom side; Drop Height (other sides; Package Product Weight Corner; and Edge close to and edge ) (Kg) bottom side )
  • Page 10 Test Sweep Frequency (Hz) Slope (dB/Oct) PSD (G /Hz) 5~100 0.015 100~200 0.0038 Packaging Configuration Testing with vibration shall be done in each of three mutually perpendicular axes. Axes are referenced to the position of system as it normally sits in front of user, i.e., Front-to-back, side-to-side and top-to-bottom.
  • Page 11 ITEM S/N: S/N: Result Before After Test Before After Test Test Test Function check (Under at dark room) Appearance check Inner check...

  • Page 12: Packing

    Packing...

  • Page 16: Customer Acceptance

    Note: If BenQ defect undefined failure, and it judged that is reduce the merchandise ability, BenQ CM Inform this defect. After that parties make communication and decide how to solve. 6.0 CLASSIFICATION OF DEFECTIVES A defective is a product, which contains one or more defects. The defective will be classified into following...
  • Page 17 7.0 EXPRESSION OF DEFECTIVES Number of defects Percent of defects = ------------------------------------------ X 100% Number of products inspected 8.0 INSPECTION STANDARD Unless otherwise specified, the inspection standard will be defined by SINGLE SAMPLING PLAN. Level Ⅱ is in use all the time, inspection levels are normal, reduce and tighten. Acceptance Quality Level 8.1.1 When a critical defect is found, this must be reported immediately upon detection, the lot or batch shall be rejected and further shipments shall be held up pending instructions from the responsible person in relevant...

  • Page 18: Level 1 Cosmetic / Appearance / Alignment Service

    Level 1 Cosmetic / Appearance / Alignment Service Visual Inspection ITEM Equipments Requirement Procedure and SPEC Program Menu 1. voltage confirming Digital models Opposite white checks screen 1. Using voltage model to measure output place, checking whether voltage is right.. 1697 1280*800/60Hz 2.
  • Page 19 Press＂ SOURCE＂ Key and select＂ PC or Pattern Generator 5 Opposite white checks screen 3.VGA adjustment VGA＂. (Factory mode) 1697 1280*800/60Hz Check if each Timing can display 1997 1440*900/60Hz normally. 2297/2097 1680*1050/60Hz If there is a mode can not work after shift, below 32 grey scale pictures.
  • Page 20 PC or Pattern Opposite white checks screen 1.Press CH▲▼ Key to choose Contrast. Generator 1697 1280*800/60Hz b. Contrast 2. Press VOL▲ Key Set upon clients 1997 1440*900/60Hz requirements . 2297/2097 1680*1050/60Hz PC or Pattern Opposite white checks screen 1. Press CH▲▼Key to choose Scale. Generator 1697 1280*800/60Hz c.
  • Page 21 PC or Pattern Full white picture 1. Press MENU Key to open OSD. Generator 1697 1280*800/60Hz 2. Choose picture. 1997 1440*900/60Hz 3. press CH▲▼Key to select Color temp. 2297/2097 1680*1050/60Hz 4. press VOL▲ Key to enter 5. press VOL▲ Key to choose Cool. d-b.
  • Page 22 PC or Pattern Preset mode 1. Press CH▲▼Key To Select Time Out. b. Time Out setup Generator 2. Press VOL▲▼Key set upon clients requirements Default is 15 s. FLUKE 54200 1. Press Source Key to enter OSD. Full polychrome 2. Press CH▲▼Key to select YPBPR .
  • Page 23 1. DVD PLAYER 1. Press SOURCE Key to choose AV. 2. VG-848 2. According to signal source, doing picture and volume test. 3. FLUKE 54200 3. Press MENU to open OSD. 6.2 AV testing 4. Press CH▲▼Key to select and press VOL▲ Key to enter.
  • Page 24 1. DVD PLAYER 1. Press SOURCE Key to select S-VIDEO. 2. VG-848 2. According to signal source, doing picture and volume test. 3. FLUKE 54200 3. Press MENU to open OSD. 6.6 S-VIDEO testing 4. Press CH▲▼Key to select and press VOL▲ Key to enter ,after that ,doing each function and confirm whether each function is right.
  • Page 25 8.1 Sound mode 1. Press CH▲▼Key to choose Sound mode. 2. Press VOL▲▼Key set upon clients requirements. Default is User. 8.2 Bass 1. Press VOL▲▼Key set low pitch dimension. 2. When leaving the factory, it is settled 50 8.3 Treble 1.
  • Page 26 function PC or Pattern Generator D620 DDC Test Card DDC Tester direct through signal line to get checking into machine EEPROM to save and take data. to confirm data whether is right value PC or Pattern Generator 1. Make BRIGHTNESS and CONTAST shift to adjustment the mix and black picture，to measure the mix brightness.
  • Page 27 Visual Cleaning...
  • Page 28 Appearance...

  • Page 29: Software Upgrade Process

    Software Upgrade Process MStar ISP Tool Guide Accessory: Tool PCB*1 PCS, USB Cable*1 PCS, D-SUB Cable*1 PCS. USB Tool Driver, MStar IPS Utility, MStar ISP Tool Guide Step1: Connect TV, Tool PCB and PC; TV is Power ON Connect to TV Connect to PC USB Port Step2: Install Tool PCB Driver:...
  • Page 34 Note: FTDI20000x64_vista is for 64bit vista OS. FTDI20000_winxp is for winxp and 32bit vista OS FTDI_win98 is for win98 OS...
  • Page 36 Install Tool PCB USB driver.
  • Page 38 USB Serial Converter A install OK and Waiting for...
  • Page 42 Don’t Browse and click Next directly.
  • Page 45 Install Tool PCB Driver completely Step3: Update TV FW...
  • Page 46 USB ISP Tool connect OK...
  • Page 47 Click Connect...
  • Page 49 Read Program File Read TV FW path.
  • Page 51 Read TV FW OK...
  • Page 52 Click Auto for program...
  • Page 53 Select Program and Exit IPS...
  • Page 54 Programming… and LED is OFF...
  • Page 55 Pass and TV power on New FW version OSD display in the left-up of screen.
  • Page 56 Step4: Turn off TV with RC or Power key after EEPROM erase. Step5: Turn on TV and the FW update procedure completely Add.: enter factory model Input，6，2，5，8，0 with remote controller. Note: please do not adjust any other functions in factory model, in case of any problem irreparable! If any problem caused by adjust factory model, manufactory do not take any responsibility for that, thanks!

  • Page 57: Exploded View

    Exploded View...

  • Page 58: Disassembly / Assembly

    Disassembly / Assembly 1. take off base and stand a’ssy A. press knot as the below picture show, take off base B. take off the screw (108-S12-4031-1H) as below picture, then take off the stand arm screw...
  • Page 59 C. prepare take off the real cover as below picture Tool: pneumatic driver, cotton gloves, static electricity ring 2. Take off the screw of real cover A. loos screw Screw Screw...
  • Page 60 B.take off the real cover Tool: pneumatic driver, cotton gloves, static electricity ring 3. Take off LVDS cable and panel lamp cable Tool: cotton gloves A. take off the panel lamp cable form lunch box B. take off LVDS cable from panel...
  • Page 61 Note: the cotton gloves, static electricity ring should be needed 4. take off the small cover of CI A. loose the screw as below picture and take off the CI cover Tool: pneumatic driver, cotton gloves, static electricity ring screw screw...
  • Page 62 5. take off connected cable Tool: cotton gloves, static electricity ring A. take off speaker cable B. take off the cable of IR, key board and video 6. take off speaker A. take off the speaker from front bezel Tool: cotton gloves, static electricity ring...
  • Page 63 7. loose the screw of lunch box Tool: pneumatic driver, cotton gloves, static electricity ring A. take off the screw as below picture...
  • Page 64 Screw Screw Screw B. take off lunch box a’ssy 7. take off panel Tool: cotton gloves, static electricity ring A. take off the panel from front bezel...
  • Page 65 8. take off screw from panel tool: pneumatic driver, cotton gloves, static electricity ring A. loose the screw and take off the iron brace...
  • Page 66 Screw Screw 10. disassemble key board and front bezel Tool: cotton gloves, static electricity ring Screw A. take off the key board and earphones board from bezel...
  • Page 67 11. loos screw tool: pneumatic driver, cotton gloves, static electricity ring A. loose screw and take off the IR board Screw Screw Screw Screw 12. loose the screw of lunch box a’ssy Tool: pneumatic driver, cotton gloves, static electricity ring...
  • Page 68 b. loose screw of IO board E. loose tuner nut c. loose screw of HDMI connected location a. take off the iron brace of on/off d.loose the screw of VGA cabel 13. take off main board and power board Tool: pneumatic driver, cotton gloves, static electricity ring A.
  • Page 69 B. loose the earth wire screw of power board screw 14. take off tuner board and CI card Tool: static electricity gloves, static electricity ring a. take off digital cable b. take off CI card c. take off tuner board connecter...
  • Page 70 c. take off tuner board 15. take off screw of stand arm Tool: pneumatic driver, cotton gloves, A. loose the below screw and take off the stand arm srew Screw screw Srew Screw srew...

  • Page 71: Level 2 Circuit Board And Standard Parts Replacement

    Level 2 Circuit Board and Standard Parts Replacement Block Diagram...

  • Page 72: Troubleshooting

    Troubleshooting System Trouble Shooting Flow Chart...

  • Page 77: Appendix 1 - Screw List /Torque

    Appendix 1 – Screw List /Torque 100-006-3033H SCREW pan head,3*6 P=0.5 RoHS 100-006-3062H SCREW R3*6mm TP+ISOE-PLATE COLOR Zn RoHS 100-008-3033H R 3*8 ISO PLATE Ni RoHS 101-005-2032H SCREW M2*5 ISO E-PLATE COLOR Zn RoHS 101-006-3012H SCREW M3.0*6 TP1 E-PLATE COLORZn 101-008-3013H SCREW 3*8 TP1 E-PLATE Ni RoHS 101-008-3013H...

  • Page 78: Appendix 2 - Code List: Ir

    Appendix 2 – Code List: IR IR Code a. UP series mode Remote control unit key table...
  • Page 79 b. UC/UU series mode...
  • Page 80 Remote control unit key table Key Name Description / Function Data code Power Power Toggle C.C. function for USA Mute Mutes and restores your LCD TV sound Sleep Sets up the LCD TV sleep time Select and switch to a channel 10~19 Source Selects from different input signal...
  • Page 81 Menu To display the OSD menu Exit Exit the OSD menu 06,07,41,43, Allows to move, select and set up the OSD options SCALE Selects from the following modes setting:4:3, 16:9 Selects the MTS options: SAP, Stereo and Mono Display information on the LCD TV screen such us channel DISPLAY and channel label Switches back and forth between the current and previous...
  • Page 82 For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. Please check BenQ’s eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (May , 2007)
  • Page 83 Content Index INTRODUCTIO3N ........................ 3 GENERAL DESCRIPTIONS ....................4 PRODUCT OVERVIEW ......................5 ..................... 5 PECIFICATION ......................19 ACKING ..................19 USTOMER CCEPTANCE LEVEL 1 COSMETIC / APPEARANCE / ALIGNMENT SERVICE ........22 & C ................22 ISUAL NSPECTION LEANING ............

  • Page 84: Introductio3N

    Introduction Safety Notice Prior to using this service manual, please ensure that you have carefully followed all the procedures outlined in the user's manual for this product. (1) Read all of these instructions. (2) Save these instructions. (3) Follow all warnings and instructions are marked on the product. (4) Unplug this product from the wall outlet before cleaning.

  • Page 85: General Descriptions

    General Descriptions This Service Manual contains general information. There are 2 levels of service: Level 1: Cosmetic / Appearance / Alignment Service Level 2: Circuit Board or Standard Parts Replacement Related Service Information BenQ Global Service Website: http://support.benq.com/front/benqmain.asp Support Website: http://bqpgsr.benq.corp.com/customize/asplogin.asp...

  • Page 86: Product Overview

    Product Overview Specification...
  • Page 87 Inputs & Connector types Signals Video Format Outputs F-TYPE Analog TV NTSC RCAx1+ RCAx2 VIDEO Video + L/R Audio CVBS VIDEO (Red, White) S-VIDEO S-VIDEO+ L/R Audio Mini Din 4 Pin S-VIDEO Component 480i, 576i, 480p, RCAx3+RCAx2 YPbPr (Y, Pb/Cb, Pr/Cr) YPbPr 576p, 720p, 1080i (Red, White)
  • Page 88 RCA jacks are all female type. Mini DIN CNC 4 Pins for S-video (SCN570S3NS00000), the pin assignment is described as below: 1: Ground 2: Ground 3: Y 4: C HDMI Format DVI 1.0 Level / Impedance 0.5~3.0Vp-p/100 Ohm (Differential),50 Ohm (Single ending) TMDS Mode Single Link Frequency...
  • Page 89 Format Y, Pb, Pr or Y, Cb, Cr Level / Impedance Y: 1.0Vp-p / 75Ω Pb/Cb, Pr/Cr: 0.7 ± 0.035Vp-p / 75Ω HDMI Timing V FREQ H FREQ STANDARD RESOLUTION 480p 720x480 31.46 576p 720x576 31.25 720p 1280x720 37.5 74.25 720p 1280x720 45.0...
  • Page 90 SDTV 480p 720x480 31.461 SDTV 480i 720x480 15.734 13.5 SDTV 576p 720x576 31.25 SDTV 576i 720x576 15.62 13.5 HDTV 720p 1280x720 37.5 74.25 HDTV 720p 1280x720 74.25 HDTV 1080i 1920x1080 28.12 74.25 HDTV 1080i 1920x1080 33.7 74.25 Power Source AC100 – 240 V, 60/50 Hz Sound Output 3W X2, 4 Ohm.
  • Page 91 ITEM Equipments Requirement Procedure and SPEC Program Menu 1. Voltage Digital models Opposite white checks 1. Using voltage model to measure confirming screen output place, checking whether voltage is right. 1697 1280*800/60Hz 2. Connect Power, checking whether 1997 1440*900/60Hz Power LED present blue right 1.
  • Page 92 PC or Pattern 1. Press MENU Key to open OSD. Generator 2. Press VOL▲▼ Key to open VGA 3.1 VGA Setup Setup. 3. After finished, choose MENU to exit. PC or Pattern 32 grey scale picture 1. Press CH▲▼ Key to choose Auto Color then press VOL▲...
  • Page 93 PC or Pattern Opposite white checks 1. Press CH▲▼ Key to choose Color screen Generator temp. 1697 1280*800/60Hz d. Color temp 2.Press VOL▲ Key to enter. 1997 1440*900/60Hz 2. Press VOL▲ Key ,Set upon clients 2297/2097 requirements 1680*1050/60Hz PC or Pattern Full white picture 1.
  • Page 94 PC or Pattern Full white picture 1. Press MENU Key to open OSD. Generator 1697 1280*800/60Hz 2. Choose Picture. 1997 1440*900/60Hz 3. Press CH▲▼Key to select Color temp. 2297/2097 1680*1050/60Hz 4. Press VOL▲ Key to enter 5. Press VOL▲ Key to choose Cool. d-c.
  • Page 95 FLUKE 54200 1. Press CH▲▼Key To select Auto Full polychrome Color color bar 100_0 And then VOL▲ Key to enter 4.1 Auto color 2. To confirm Full polychrome is right. Color bar 100_0 PC or Pattern Preset mode 1. To confirm each adjustment values is 5.
  • Page 96 1. DVD PLAYER 1. Press SOURCE Key to select YPBPR. 2. VG-848 2. According to signal source, doing picture and voice test. 3. FLUKE 54200 3. Press MENU to open OSD. 6.3 YPBPR testing 4. Press CH▲▼Key to select and press VOL▲...
  • Page 97 1. DVD PLAYER 1. Press SOURCE Key to select S-VIDEO. 2. VG-848 2. According to signal source, doing 3. FLUKE 54200 picture and voice test. 3. Press MENU to open OSD. 6.6 S-VIDEO testing 4. Press CH▲▼ Key to select and press VOL▲...
  • Page 98 Receive picture is clear and fluent numeral signal Sound without noise 7. DT TV checkment 8. AUDIO PC or Pattern Any Patten 1. Press MENU Key to open OSD. adjustment Generator 2. Press VOL▲▼Key to choose Audio. Sound source 3. After finished, choose MENU to exit. 1.
  • Page 99 10. test in the factory PC or Pattern Opposite white checks 1. In User area, press CH▼ Key and area screen 1697 Power Key, then press CH▲ Key and Generator 1280*800/60Hz Power Key, then enter into factory area. 1997 1440*900/60Hz sing remote control...

  • Page 100: Packing

    15. First APS setup sing the remote control to press Menu +55800 Packing parts list. 005-U00-OF22BENQH OF2297B-UI1 BENQ LOGO CARTON RoHs OF2297B-UI1 CARTON LABEL FOR BENQ 120*100MM 003-401-BENQH RoHs 003-001-ALL-1H SHIPPING LABEL 78*18mm L150X3MROHS OF2297B-UI1 YELLOW LABEL ON CTN 100*100MM...
  • Page 101 Note: If BenQ defect undefined failure, and it judged that is reduce the merchandise ability, BenQ CM Inform this defect. After that parties make communication and decide how to solve.
  • Page 102 into following classes: 6.1 Critical defective A critical defective contains one or more critical and may also contain major and/or minor defects. 6.2 Major defective A major defective contains one or more defects and may also contain minor defects but contains no critical defect.

  • Page 103: Level 1 Cosmetic / Appearance / Alignment Service

    . Visual inspection shall be down with the distance from eyes to the sample 45 cm. . Display mode: Primary mode UXGA 60Hz 11.0 TEST EQUIPMENTS 11.1 BenQ PCs with BenQ display adapter or other specific display adapter, which is agreed upon by both parties 11.2 Test program by BENQ...
  • Page 104 ITEM Equipments Requirement Procedure and SPEC Program Menu 1. voltage confirming Digital models Opposite white checks 1. Using voltage model to measure output screen place, checking whether voltage is right.. 1697 1280*800/60Hz 2. Connect Power, checking whether Power LED present blue right 1997 1440*900/60Hz 2.
  • Page 105 PC or Pattern 1. Press MENU Key to open OSD. 3.1 VGA Setup Generator 2. Press VOL▲▼Key to open VGA Setup. 3. After finished, choose MENU to exit. PC or Pattern 32 grey scale picture 1. Press CH▲▼Key to choose Auto Color then press VOL▲...
  • Page 106 PC or Pattern Opposite white checks 1. Press CH▲▼Key to choose Color screen Generator temp. 1697 1280*800/60Hz d. Color temp 2.Press VOL▲ Key to enter. 1997 1440*900/60Hz 2. Press VOL▲ Key ,Set upon clients 2297/2097 requirements 1680*1050/60Hz PC or Pattern Full white picture 1.
  • Page 107 PC or Pattern Full white picture 1. Press MENU Key to open OSD. Generator 1697 1280*800/60Hz 2. Choose picture. 1997 1440*900/60Hz 3. press CH▲▼Key to select Color temp. 2297/2097 4. press VOL▲ Key to enter 1680*1050/60Hz 5. press VOL▲ Key to choose Cool. d-c.
  • Page 108 FLUKE 54200 1. Press CH▲▼Key To select Auto Full polychrome Color color bar 100_0 4.1 Auto color And then VOL▲ Key to enter 2. To confirm Full polychrome is right. Color bar 100_0 PC or Pattern Preset mode 3. To confirm each adjustment values is right and then press Power off.
  • Page 109 1. DVD PLAYER 1. Press SOURCE Key to select YPBPR. 2. VG-848 2. According to signal source , doing picture and volume test. 3. FLUKE 54200 3. Press MENU to open OSD. 6.3 YPBPR testing 4. Press CH▲▼Key to select and press VOL▲...
  • Page 110 1. DVD PLAYER 1. Press SOURCE Key to select S-VIDEO. 2. VG-848 2. According to signal source , doing picture and volume test. 3. FLUKE 54200 3. Press MENU to open OSD. S-VIDEO 4. Press CH▲▼Key to select and press testing VOL▲...
  • Page 111 Receive picture is clear and fluent numeral signal Sound without noise 7. DTV checkment 8. AUDIO adjustment PC or Pattern Any Patten 1. Press MENU Key to open OSD. Generator 2. Press VOL▲▼Key to choose Audio. Sound source 3. After finished, choose MENU to exit. 8.1 Sound mode 1.
  • Page 112 11. Speaker function PC or Pattern 1. press VOL▲▼Key to VOLUME . examination Generator 2. adjust ▲ ▼Key to examine whether controlled value. 3. Check if the volume out of true. control 1. PC or Pattern 1. Check if in any mode ,each function is 12.remote function testing normal.

  • Page 113: Software/Firmware Upgrade Process

    Software/Firmware Upgrade Process...
  • Page 114 ** OPERATION INSTRUCTION ** ** OPERATION INSTRUCTION ** 1.Use the USB cable connect the PC with ISP board，then connect the ISP board with the machine which will be upgraded by VGA cable； 2. Insert the AC POWER cable into LCD TV from the back a.

  • Page 115: Adjustment / Alignment Procedure

    Level 1 Cosmetic / Appearance / Alignment Service Adjustment / Alignment Procedure...

  • Page 118: Level 2 Circuit Board And Standard Parts Replacement

    Level 2 Circuit Board and Standard Parts Replacement Exploded View...

  • Page 119: Disassembly / Assembly

    Disassembly / Assembly SOP: Tuner...
  • Page 120 Block Diagram...

  • Page 121: Troubleshooting

    Troubleshooting System Trouble Shooting Flow Chart...

  • Page 124: Appendix 1 - Screw List /Torque

    Appendix 1 – Screw List /Torque 108-306-4033H SCREW R/W 4*6 ISO+LOCK Washer Ni FOR GL266 ROHS 107-010-3071H SCREW M3*10 color ROHS 107-005-3032H SCREW B3*5 ISO E-PLATE WHITE Zn ROHS 106-2R2-2033H SCREW M2*P04*2.2 Φ3.5*0.4 E-PLATE Ni ROHS 106-006-4033-1H SCREW I4*6 ISO Nylok SCREWE-PLATE Ni ROHS 106-004-1516H SCREW 1.5*4mm ROHS 104-008-3032H...

  • Page 125: Appendix 2 - Code List: Ir

    Appendix 2 – Code List: IR...
  • Page 126 Notice: For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. Please check BenQ’s eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (March, 200X)
  • Page 127 Content Index Level 3 - Component Repair to Circuit Boards ..................3 Theory of Circuit Operation ...................... 3 Circuit Schematics ........................3 PCB Artwork ..........................16...
  • Page 128 Level 3 - Component Repair to Circuit Boards Theory of Circuit Operation Circuit Schematics...
  • Page 141 PCB Artwork Keypad Board...
  • Page 142 IR/LED Board...
  • Page 143 Main Board...
  • Page 144 Power Board...

Table of Contents