BenQ G2220HD Service Manual
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BenQ G2220HD Service Manual

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See also: Product Service Manual , User Manual
Product Service Manual
Service Manual for BenQ:
G2220HD&G2220HDA
P/N: 9H.L07LN.IXX
Applicable for All Regions
Version: 001
Date:2009/12/18
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 (July, 2008)
© Copyright BenQ Corporation 2008. All Right Reserved.
1

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  • Page 1 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 (July, 2008)

  • Page 2: Table Of Contents

    Content Index 1. About This Manual....................... 3 1.1 Trademark ........................3 2. Precautions & Safety Notices ....................4 2.1 Safety Precaution ......................4 2.2 Product Safety Notice ..................... 4 2.3 Service Notes ......................... 4 3. Product Overview ........................ 5 3.1 Power Supply ......................... 5 3.2 Signal Interface.......................

  • Page 3: About This Manual

    The following terms are trademarks of BenQ Corporation: Importance Only trained service personnel who are familiar with this BenQ Product shall perform service or maintenance to it. Before performing any maintenance or service, the engineer MUST read the “Safety Note”...

  • Page 4: Precautions & Safety Notices

    2. Precautions & Safety Notices 2.1 Safety Precaution This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user. WARNINGS: This monitor should be operated only at the correct power sources indicated on the label on the rear of the monitor.

  • Page 5: Product Overview

    3. Product Overview 3.1 Power Supply Items Condition Spec Note AC Input Voltage range Universal input full range 90~264Vac AC Input Voltage rating Universal input full range 100~240Vac AC input frequency range 90~264Vac 47~63Hz AC input frequency rating 100~240Vac 50~60Hz AC Input Current 100Vac 1.5A(max)

  • Page 6: Support Timings

    No VGA cable or DVI cable Message ‘’No cable connected !’’ on screen connect 3.4 Support Timings BenQ customer preset Timings are as below: P: Preset Mode NP: Non Preset Mode FS: Fail Save Mode (shows “Out of Range”, but still can see picture) O: Out of Range (only show “Out of Range”, without picture)

  • Page 7: Operational & Function Specification

    1280x1024 79.98 75.02 135.00 Preset 1280x1024 81.18 76.16 135.09 Non Preset 1280x1024 91.15 85.02 157.50 Fail Safe Mode 1360x768 47.71 60.01 85.50 Preset 1366x768 47.71 59.79 85.50 Preset 1400x1050-R 64.74 59.95 101.00 Non Preset 1400x1050 65.32 59.98 121.75 Non Preset 1400x1050 82.28 74.87...
  • Page 8 Display Area 476.64(H)x268.11(V) 477.504(H)x268.596(V) Pixel Pitch 0.248(H)x0.248(V) 0. 248(H)x0.248(V) Display Colors 16.7M(6 Bit+Hi-FRC) Number of Pixel 1,920(H) X 1,080(V), Brightness Min: 240cd/m ; Typical: 300cd/m Min: 250cd/m ; Typical: 300cd/m Min: 600:1 Min: 700:1 Contrast Ratio Typical: 1000:1 Typical: 1000:1 Viewing Angle Hor: 170°, Ver: 160°...
  • Page 9 3.5.3 Environment Operating Specification Temperature range 0°C to 50°C Relative humidity 5% to 90% Altitude 0 to 10000 feet Storage -20°C to 60°C Temperature range Relative humidity 5% to 90% Altitude 0 to 30000 feet 3.5.4 Speaker : 1.5W 12Ω X 2 Input impedance : ≥...

  • Page 10: Lcd Characteristics

    Frequency response range 500Hz – 20kHz ≥ 70 dB±3 Signal to noise ratio 1.0 W + 1.0 W (Typical) @5%THD (Input sine wave Output power signal:1KHz/0.7Vrms) 3.6 LCD Characteristics 3.6.1 The physical definition &technology summary of LCD panel Supplier Model name AUO M215HW01 V0: M216H1-L01 Display Area...

  • Page 11: Pallet & Shipment

    Depth 175mm 4.3±0.5 Kg ( Net ) Monitor Weight 6.1±0.5Kg( Gross / with packing) 3.8.2 Weight Item condition Spec Remark 4.3±0.5 Kg ( Net ) Monitor (Net) Monitor with 6.1±0.5Kg( Gross / with packing) packing(Gross) 3.8.3 Plastic Item TEXTURE No. COLOR No.

  • Page 12: Level 1 Cosmetic / Appearance / Alignment Service

    20’SEA Pallet A:4 Pallet A: 88 Pallet B:6 Pallet B:72 40’SEA 1656 Pallet A:88 Pallet A:9 Pallet B:72 Pallet B:12 20’AIR Pallet A:60 Pallet A:4 With Pallet Pallet B:48 Pallet B:6 40’AIR 1116 Pallet A:60 Pallet A:9 Pallet B:48 Pallet B:12 Without Pallet 40’...

  • Page 13: Alignment Procedure (For Function Adjustment)

    2. Select the Flash ROM type which is used in this monitor, then select the ISP button, and then choose corresponding firmware, and load them to Flash ROM. 4.2 Alignment Procedure (for function adjustment) 4.2.1 Preparation: 1. Setup input timing VESA to 1920*1080@60Hz,32-Grays pattern. 2.
  • Page 14 MENU Enter Auto POWER □ □ Press[MENU], [Enter]& [POWER] at the same time, when Monitor is Power ● ● ● FACTORY MODE On OSD menu will be shown with “F” on the left top. Select “F” for entering factory mode. To Show &...
  • Page 15 Dynamics Sharpness 不可调节 为 ON 另外两个模式下的 Senseye Demo 自动变为 ON Photo Sharpness 不可调节 2. Senseye Demo 处于 ON 时,做 Auto 自动变为 OFF sRGB Sharpness 不可调节 Senseye Demo (ON/OFF) Full full Display Mode Aspect D-sub/DVI D-sub Input （DVI Model） 17 languages English/日本語/简体中文/繁體中文...
  • Page 16 Contrast 1. Set input mode to 1920×1080@60Hz Chroma Check 2. Set Pattern to 32 gray shades Signal Generator 3. Set brightness/contrast to the max. The brightest 4~8 shades brightness cannot be distinguished. Color 1. Do “Auto Color Balance” at 1920×1080@60Hz, 32gray shades Temperature 2.
  • Page 17 Power Off < 1W...

  • Page 18: Level 2 Disassembly/Assembly/Circuit Board/Standard Parts Replacement

    5. Level 2 Disassembly/Assembly/Circuit Board/Standard Parts Replacement 5.1 Exploded Diagram...

  • Page 19: Assembly Block

    KEYPAD CABLE *1 ASSY, PANEL *1 FOIL,PET+AL,140*40mm *2 SCREW,P,CROSS,M4*10 *2 KEYPAD *1 FOIL,AL,L50*W30*T0.09mm,LE2294 *1 BEZEL *1 LOGO, BENQ, LE20D6 *1 ASSY BEZEL *1 FNCTION KEY *1 LED LENS *1 LOGO *1 BACK COVER, LE21P8 *1 ASSY BACK COVER *1 LOGO BACK *1...
  • Page 20 Assemble the keypad Assemble the panel with front-bezel Assemble chassis & Plug in the LVDS Plug in the lamp lines...
  • Page 21 5 Stick the foil 6 Stick the foil Plug in the keypad cable Assemble back-cover...
  • Page 22 Assemble the stand and screw the screws Assemble the base...

  • Page 23: Disassembly Block

    ASSY HINGE,LE21P8 *1 ASSY,BACK COVER *1 BACK COVER,LE21P8 *1 SCREW,P,CROSS,M4*10 *2 LOGO BACK *1 BRACKET VESA *4 BEZEL *1 LOGO,BENQ,LE20D6 *1 ASSY FRONT BEZEL FNCTION KEY *1 LED LENS *1 LOGO *1 ASSY, PANEL *1 FOIL,PET+AL,140*40 mm *2 KEYPAD *1 FOIL,AL,L50*W30*T0.09mm,LE2294 *1...
  • Page 24 Disassemble the base Unscrew the screws and disassemble the stand Disassemble the front bezel Disassemble the back-cover...
  • Page 25 Remove the keypad cable Pull out the lamp wire Remove the foil Remove the foil...
  • Page 26 Pull out the LVDS Remove the chassis Remove the keypad Remove the panel...

  • Page 27: Block Diagram

    5.4 Block diagram Power Board...
  • Page 31 IF Board...

  • Page 35: Lay Out

    5.5 Lay out 5.5.1 IF board lay out...
  • Page 37 5.5.2 P/I Board lay out...

  • Page 38: Circuit Operation Theory

    5.6 Circuit operation theory 5.6.1. Low voltage to high voltage circuit 24V DC provides the power for IC501; the control signals Brightness and ON/OFF come from I/F board. ON/OFF signal connect to R502 to control The Q502 and Q501 To finished control pin4 of IC501 and makes IC501 enable.
  • Page 39 High Voltage to Low Voltage Control Circuit C804 is used to smooth the wave from rectifier. IC802 is a highly integrated PWM controller. When rectified DC high voltage is applied to the HV pin during start-up, the MOSFET Q804 is initially off, and the Vcc pin capacitor is charged.
  • Page 40 - LED Indicator on Front Bezel a. When press button “power”, U108 #48 sends out a low potential, via R169, flow to CN104 #7 on keypad, LED Green ON. b. When in “Suspend” mode, U108 #1 sends out a low potential, via R166, flows to CN104 #5 on keypad, LED Amber ON.

  • Page 41: Trouble Shooting Guide

    5.7 Trouble Shooting Guide Backlight can’t be turned on No raster? LED Green? Backlight can’t be turned on. Is there 24Vdc Check power voltage on pin9 of supply Is there high-level voltage on Check I/F board Is Ok R502? pin4 of IC501? R502 open Are connected rightly CN501, Connecting the...
  • Page 42 No Power & LED Off No power Check primary Check circuit if Check IC802, rectifier voltage short C804, T801, Check F801, P801, RT,801,D801 Check pin7 of IC802 CheckC810, D803, C807, voltage about 16V Check primary OVP, OLP and secondary Check pin2 of IC802 voltage feedback, OVP circuit about 3V Check R833, R834, R835,...
  • Page 43 2. Unstable Power Unstable power Check sampling Check R822, Circuit R824, R825, R822, R824, R825, R826, Check the C pin Check the R pin Change voltage of IC803 if voltage of IC803 IC803 about 2 5V Check R832, R820 Check pin2 of Check D803 ,C807 if IC802 voltage is short...
  • Page 44 3. Black Screen Black Screen Check power supply: Power Fail Pin1, 2 of CN101 Check power supply Check Of U108 U101 Check Reset Of U108 Check Q105, C164, R149 R151, R152 Check: X101 Check Crystal of U108 Check CCFL - Enable Check pin5 of Inverter Fail of U108...
  • Page 45 4. White Screen White Screen LVDS Cable Workmanship Reinsert Change LVDS LVDS Cable NG Cable Check VLCD Check LVDS Panel Fail Is 5V? Signals Check Panel - Enable Check the HW Reset Check C164 Of U108 is High? Of U108 Check R107, R176, Q101, Q104 Check the pins...
  • Page 46 5. Bad Screen Bad Screen LVDS Cable Workmanship Reinsert Change LVDS LVDS Cable NG Cable Check Crystal Of U108 Check: X101 Check :SDO,SCZ, Check the communication SCK,SDO,Reset of the U108 and U105 Check the Pins of The U108 and U105...

  • Page 47: Dimmession Drawing

    6. Dimmession Drawing...

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G2220hda

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