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Applicable Country & Regions: China

Service Manual for BenQ:

LCD G2320HD

(D-SUB +DVI-D +HDMI

+Black Bezel)

Product Service Manual – Level 1~2

Version: 1st

Date:04-28-2009

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 (April, 2009)

©

Copyright BenQ Corporation 2009. All Right Reserved.

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Содержание G2320HD

Страница 1: ...n 1st Date 04 28 2009 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...

Страница 2: ...atement 6 3 General Description 7 4 Related service information 8 5 Product Overview 8 5 1 Monitor Specifications 8 5 2 Packing 10 Level 1 Cosmetic Appearance Alignment Service 12 Visual Inspection Cl...

Страница 3: ...Light Processing Texas Instruments DMD Digital Micromirror Device DRAM Dynamic RAM DVI Digital Video Interface DVI I Digital Video Interface Integrated E EEPROM Electrically Erasable and Programmable...

Страница 4: ...lue The primary color signals for TV By mixing levels of R G and B all colors Y C are ROM Read Only Memory S SDA Data signal on I2 C bus SDRAM Synchronous DRAM SW Sub Woofer Software T THD Total Harmo...

Страница 5: ...otection of panel any time When repairing the circuit board please follow the requirement of RoHS and refer to the circuit diagram and repairing process that attached in the Service Manual The method...

Страница 6: ...onfirming the RoHS requirement before replace them 2 2 Safety Notice 1 Make sure your working environment is dry and clean and meets all government safety requirements 2 Ensure that other persons are...

Страница 7: ...ibility plug play capability power management for reducing power consumption when the computer is not in use compliance with the recommendations in accordance with TCO 03 This operating manual contain...

Страница 8: ...y Area 509 76x286 742 Native Resolution 1920x1080 Pixel Pitch 0 265 Brightness Typ 300 nits Contrast Ratio Typ DCR Min 1000 1 Panel 40000 1 DCR Viewing Angle H V CR 10 160 160 Display Colors 16 7M 6bi...

Страница 9: ...ndby Tilt Up Down 20 5 VESA Wall Mount 100 x 100mm Kensington Lock Yes Container Loading 40 TBD Container Loading 20 TBD Multi language Support OSD 17 Languages English Francais Deutsch Italiano Espan...

Страница 10: ...D Color Monitor BenQ G2320HD 10 5 2 Packing When packing the monitor into the carton please follow the pictures as below Using the EPE bag to pack the monitor without base Using the EPS to pack the mo...

Страница 11: ...olor Monitor BenQ G2320HD 11 Putting the base user manual and D SUB cable in the position as the picture shows above Putting the monitor and accessories into the carton User manual Power cord Base D S...

Страница 12: ...a radiator or heat source or in a built in installation unless proper ventilation is provided Never push objects or spill liquid of any kind into this product Software Firmware Upgrade Process 1 When...

Страница 13: ...23 LCD Color Monitor BenQ G2320HD 13...

Страница 14: ...23 LCD Color Monitor BenQ G2320HD 14...

Страница 15: ...nQ G2320HD 15 4 Connect the ISP board as follow 5 The process of ISP write is as follows a Double click running the program as follows b Click and the program runs as follows Connect to the PC LPT Con...

Страница 16: ...23 LCD Color Monitor BenQ G2320HD 16 c Click OK and the program runs as follows d Click icon and the program runs as follows...

Страница 17: ...23 LCD Color Monitor BenQ G2320HD 17 e Click icon search the correct program and click open f Click icon If it burns successfully it will show as the follow picture...

Страница 18: ...nel may be obtained from Video Electronics Standards Association VESA Extended Display Identification Data EDID information may be also obtained from VESA 1 An i486 or above personal computer or compa...

Страница 19: ...0HD 19 3 The process of ISP write is as follow a Double click appear as follow b Choose Analog and then click Loadfile lcdddc B BENQ 23BNQ G2320HDB it will show the picture as follow Note When you wri...

Страница 20: ...he picture as follow d Input the date in Year Month Day box Key in the same 13 numbers in the Input SN and Verify SN then click Program when the analog DDC Write complete it will show the picture as f...

Страница 21: ...0 00 00 00 FC 00 42 60 45 4E 51 20 47 32 33 32 30 48 44 0A 00 00 00 FF 70 00 32 34 35 36 38 37 39 30 32 33 31 0A 20 00 E0 Decoded EDID data Header Header 00 FF FF FF FF FF FF 00 x Header x Vendor Prod...

Страница 22: ...e In First Detailed Timing GTF supported No Basic Display Parameters Features Color Characteristics Red x 0 6396484375 Red y 0 3300781250 Green x 0 3017578125 Green y 0 5996093750 Blue x 0 1503906250...

Страница 23: ...dentification x Detailed Timing Descriptions Detailed Timing 1920x1080 60Hz x Detailed Timing Descriptions x Detailed Timing Descriptions Detailed Timing FD Monitor limits Min V rate 50Hz Max V rate 7...

Страница 24: ...20 00 00 00 FC 00 42 60 45 4E 51 20 47 32 33 32 30 48 44 0A 00 00 00 FF 70 00 31 35 36 34 38 37 39 30 31 32 33 0A 20 00 99 Decoded EDID data Header Header 00 FF FF FF FF FF FF 00 x Header x Vendor Pr...

Страница 25: ...7578125 Green y 0 5996093750 Blue x 0 1503906250 Blue y 0 0595703125 White x 0 3125000000 White y 0 3291015625 x Color Characteristics x Established Timings Established Timings 1 A5 720x400 70Hz VGA I...

Страница 26: ...Timing 1920x1080 60Hz x Detailed Timing Descriptions x Detailed Timing Descriptions Detailed Timing FD Monitor limits Min V rate 50Hz Max V rate 76Hz Min H rate 24KHz Max H rate 83KHz Max Pixel Clock...

Страница 27: ...1F 23 09 07 07 83 01 00 00 67 03 0C 00 10 00 38 20 2D 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 E0 0E 11 30 00 00 18 01 1D 00 72 51 D0 1E 20 6E 28 55 00 E0 40 0E 11 00 00 1E 01 1D 00 BC 52 D0 1E 20 B8 28 5...

Страница 28: ...75Hz VESA 1280 x1024 75Hz VESA Established Timings 3 80 1152 x 870 75Hz Apple Mac II Standard Timing Identification 1024 x 576 60Hz 1280 x 720 60Hz 1280 x 960 60Hz 1280 x 1024 60Hz 1440 x 900 60Hz 16...

Страница 29: ...480 P 59 94 60Hz 16 9 720 x 576 P 50Hz 16 9 720 1440 x 480 I 59 94 60Hz 16 9 720 1440 x 576 I 50Hz 16 9 640 x 480 P 59 94 60Hz 4 3 1920 x 1080 I 50Hz 16 9 720 1440 x 576 I 50Hz 4 3 1920 x 1080 P 50Hz...

Страница 30: ...criptions 1280x720 50Hz H Image Size 480 mm V Image Size 270 mm Pixel Clock 74 Hz Refreshed Mode Non Interlaced Detailed Timing Descriptions 720x576 50Hz H Image Size 480 mm V Image Size 270 mm Pixel...

Страница 31: ...he settings on your monitor Press the MENU key to display the following main OSD menu There are four main OSD menus 1 Display 2 Picture 3 Picture Advanced 4 System Use the or keys to highlight a menu...

Страница 32: ...e ENTER key to select this option and make adjustment H Position Adjusts the horizontal position of the screen image Press the or keys to adjust the value 0 to 100 V Position Adjusts the vertical posi...

Страница 33: ...enu Normal Allows video and still photographs to be viewed with natural coloring This is the factory default color Press the or keys to select this option 0 to 100 Bluish Applies a cool tint to the im...

Страница 34: ...s 0 to 5 Picture Advanced menu 1 Press the MENU key to display the main menu 2 Press the or keys to select PICTURE ADVANCED and then press the ENTER key to enter the menu 3 Press the or keys to move t...

Страница 35: ...allow aspect ratio s other than 16 9 to be displayed without geometric distortion Full Scales the input image to fill the screen Ideal for 16 9 aspect images Aspect The input image is displayed witho...

Страница 36: ...or keys to change the settings The language options displayed on your OSD may differ from those shown on the right depending on the product supplied in your region English French German Italian Spanis...

Страница 37: ...ll OSD controls will be accessible YES NO Press MENU to leave the OSD Settings menu DDC CI Allows the monitor settings to be set through the software on the PC Press the ENTER key to select this optio...

Страница 38: ...5 00 832x624 49 72 74 55 1024x768 48 36 60 00 1024x768 60 02 75 03 1152x864 67 50 75 00 1152x870 68 68 75 06 1152x900 61 80 65 96 1280x768 47 396 60 00 1280x800 49 702 59 81 1280x720 44 77 59 86 1280x...

Страница 39: ...e timer can only reset at the service mode by Timer Reset And need to have a warning message to double confirm the reset function The timer should record up to 99999 hours 7 Add one select item for DV...

Страница 40: ...0ADPB1B0130 1 PCS BEZEL 23 2 Q33G0288 2 1C0100 1 PCS LENS 3 KEPC8QJ3 1 PCS KEY BOARD 4 Q33G0287ADP 1L0100 1 PCS KEY PAD 5 750GLS230HT132N000 1 PCS PANEL 6 0G1G1030 8120 4 PCS SCREW PB MF MB MF 7 PWPC9...

Страница 41: ...REAR COVER 23 15 A33G0468ADPB1L0100 1 PCS PLATE_LOGO_B 16 AQ1G1740 12120 2 PCS SCREW STAND HINGE 17 A37G0117011 1 PCS HINGE_BENQ_G2320 18 A34G1312ADP 1B0100 1 PCS STAND FRONT 19 AM1G1740 12 47 CR3 4 P...

Страница 42: ...oth surface Be careful to avoid scratch and injury during the process of uninstall And then remove the two screws as below to remove the stand base ASS Y Fig1 2 Remove the Bezel Remove the bezel as fo...

Страница 43: ...23 LCD Color Monitor BenQ G2320HD 43 C Put the disassembly tool into the nick...

Страница 44: ...23 LCD Color Monitor BenQ G2320HD 44 D Gash slightly the latch with the disassembly tool...

Страница 45: ...23 LCD Color Monitor BenQ G2320HD 45 E When the all latches open remove the bezel 3 Disconnect the key board connections...

Страница 46: ...23 LCD Color Monitor BenQ G2320HD 46 4 Remove the rear cover 5 Remove the Panel Disconnect the Lamp Connections and LVDS Cable connection...

Страница 47: ...23 LCD Color Monitor BenQ G2320HD 47 6 Remove the Main Board and Power Board Remove the screws and disconnect the all connections at last you can get the Main Board and Power Board as follow...

Страница 48: ...23 LCD Color Monitor BenQ G2320HD 48 MAIN BOARD POWER BOARD...

Страница 49: ...20HD 49 Block Diagram Main Board D Sub Connector CN301 H sync V sync RGB Panel Interface CN601 Key Control Interface CN202 Crystal 24MHZ X401 Scalar RTD2545LH GR U501 MCU RTD2122L LF U401 DVI Connecto...

Страница 50: ...r Start Resistor R904 R905 PWM Control IC901 Transformer AC input 16V Feedback Circuit Transformer PT801 MOSFET Q805 Q806 Lamp 5V Bridge Rectifier and Filter Feedback Circuit Rectifier diodes Output C...

Страница 51: ...3shield DAT3 DAT3 5V SYNC GND HPD DAT0 DAT0 0 5shield DAT5 DAT5 clk shield clk clk GND GND R150 10R 1 16W 5 HDMI1_D0 4 D102_D R456 10K 1 16W 5 5V_VCC SCL_VGA HDMI_HOTPLUG D_SUBG C117 0 1uF 16V GREEN...

Страница 52: ...3 PA6 Q403_E R429 10K 1 16W 5 R428 10K 1 16W 5 RSTB R446 NC 10K 1 16W 5 C417 10UF16V R452 0R05 1 16W 5V R450 NC 2K2 1 16W 5 AUDIO_VDD PB0 PA2 HDMI1_CEC 3 RX C425 100uF16V HDMI_HPD 3 RX PA 0 9 5 RIN 3...

Страница 53: ...RXO2 RXE2 PA4 PA2 R435 220 OHM 1 4W RXO3 CN403 CONN 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 RXO2 PB8 PB4 PB0 PA1 RXE2 RXO2 PA6 RXO0 RXE1 RXO0 RXE3 RXOC PA5 PA2...

Страница 54: ...7 Friday March 20 2009 715G3502 C 5 0 AUDIO G3502 C X X 3 090317 HD9SNQN8FWBQDN OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component U602 NC LM358D 1...

Страница 55: ...AZ1117S 5 0TRE1 1 2 3 VSS VOUT VIN Q705_C R706 2 2 OHM 2W 5V VCC3 3 Q705_B U703 NC AZ1117D 1 2TRE1 1 2 3 ADJ GND OUTPUT INPUT on_BACKLIGHT 4 C702 100UF16V R708 4K7 1 16W 5 VCC3 3 5V 5V_VCC Q701 NC AO...

Страница 56: ...UF M 35V ON OFF R930 2 43K OHM 1 1 10W ZD902 TZX18B NC BD901A KBP208G 2 1 3 4 VOL DIM MUTE C939 1000uF 25V CN901 SOCKET 1 2 3 Q901 STP10NK70ZFP R905 8 2K OHM 1 4W IC904 KIA431A AT P L906 JUMPER 1 2 R9...

Страница 57: ...2 XXXX C802 0 047uF LV1 C805 0 022uF R840 1M 1 10W 5 C817 2PF6KV R812 100K 1 10W 1 R818 4R7 1 8W 5 LV4 R804 5K1 1 8W 5 CN802 CONN 1 2 LV3 R837 6K8 1 10W 5 R843 5K1 1 10W 5 R838 1M 1 10W 5 R808 360R 1...

Страница 58: ...e G3503 A x x 1 20081225 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component HP_R HP_SENSE C653 0 01uF HP_R C651 0 01uF C652 0 01uF R654 0R05 1 10W 5...

Страница 59: ...03 NC GND LBADC3 LED_RED AUTO R004 1K 1 10W 1 0 673V GND GND MENU C006 0 1uF C005 NC 0 001uF R007 3K 1 10W R003 1K 1 10W 1 R005 3K 1 10W LEFT 1 0K ZD005 NC GND C004 NC 0 001uF 3 0K ZD001 NC C010 0 1uF...

Страница 60: ...Adjusting the Screen Resolution on the CD Select the native resolution Pixel errors can be seen One of several pixels is permanently black one or more pixels are permanently white one or more pixels...

Страница 61: ...tion refresh rate and make adjustments based on these instructions You are running the monitor at its native resolution but the image is still distorted Images from different input sources may appear...

Страница 62: ...l Please reinsert and make sure the AC of 100 240 is normal Reinsert or check the power section Check if X401 oscillate waveforms are normal Measure U702 Pin2 3 3 and U704 Pin2 1 2V OK OK NG NG NG Rep...

Страница 63: ...01 Check if the sync signal from computer is output and video cable is connected normally Input the sync signal of computer or change the cable NG OK NG Check U401 Replace U401 Measure U702 Pin2 3 3 a...

Страница 64: ...1 base is low level X401 oscillate waveform is normal Check Correspondent component Replace Panel Check Correspondent component OK OK Replace X401 NG NG NG NG Check reset circuit of U401 is normal OK...

Страница 65: ...of C905 Check bridge rectified circuit and F901 circuit Check start voltage for the pin8 of IC901 Check R904 R905 Change IC901 NG Check the auxiliary voltage is bigger than 10V and smaller than 20V 1...

Страница 66: ...ZD803 Check ON OFF signal Check Interface board or main board NG OK Check IC801 PIN 11 5V NG OK Change ON OFF circuit Check IC801 PIN8 PIN9 PWM wave NG OK Check IC801 Check Q805 Q806 Drain wave NG Ch...

Страница 67: ...D 67 Keypad Board OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch Y N N Is Key Pad Board normally Replace Key...

Страница 68: ...23 LCD Color Monitor BenQ G2320HD 68 PCB LAYOUT Main Board...

Страница 69: ...23 LCD Color Monitor BenQ G2320HD 69...

Страница 70: ...23 LCD Color Monitor BenQ G2320HD 70 Power Board...

Страница 71: ...23 LCD Color Monitor BenQ G2320HD 71...

Страница 72: ...23 LCD Color Monitor BenQ G2320HD 72...

Страница 73: ...4 6 1KGF CM 0M1G1030 6120 M3 6 FOR MB MAINFRAME FOR HMDI MAINFRAME 2 6 1KGF CM 0Q1G1030 6120 M3 6 FOR REAR COVER HEADPHONE JACK BOARD 1 12 2KGF CM AM1G1740 12 47 CR3 M4 12 FOR STAND HINGE FOR HINGE R...

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