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ViewSonic VA712-1

VA712b-1

Model No. VS10697

17” Color TFT LCD Display

(VA712-1_VA712b-1_SM Rev. 1b Mar. 2006)

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA – (800) 888-8583

Service Manual

Summary of content (81 pages)

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Service Manual ViewSonic VA712-1 VA712b-1 Model No. VS10697 17” Color TFT LCD Display (VA712-1_VA712b-1_SM Rev. 1b Mar.
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Copyright Copyright ¤ 2005 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.
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TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 5 3. Front Panel Function Control Description 15 4. Circuit Description 21 5. Adjustment Procedure 24 6. Troubleshooting Flow Chart 39 7. Recommended Spare Parts List 44 8. Exploded Diagram and Exploded Parts List 52 9. Block Diagram 66 10. Schematic Diagrams 67 11.
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1. Precautions and Safety Notices 1. Appropriate Operation (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) Turn off the product before cleaning. Use only a dry soft cloth when cleaning the LCD panel surface. Use a soft cloth soaked with mild detergent to clean the display housing. Use only a high quality, safety approved AC/DC power cord. Disconnect the power plug from the AC outlet if the product will not be used for a long period of time.
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(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or bend the TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be damaged. (12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local ordinances or regulations for disposal.
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Correct methods : Only touch the metal-frame of the panel or the front cover of the monitor. Do not touch the surface of the polarizer . Incorrect Methods : Surface of the panel is pressed by fingers & this may cause “ MURA “ Take out the monitor with cushion Take out the monitor by grasping the LCD panel. That may cause “ MURA“.
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Correct Methods : Place the monitor on a clean & soft foam pad . Incorrect Methods : Place the monitor on foreign objects .
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2. Specification VA712 Specifications (for Analog) Chapter 1 General Descriptions TFTLCD PANEL Input Signal Sync Compatibility Compatibility Power Voltage Power Consumption Audio Ergonomics OSD Control Dimension Weight Operating Condition Storage Condition Regulation FEATURES Size Luminance (Typ, cd/㎡) Contrast Ratio (Typ) Colors ( 6 bit + 2 bit FRC) Response Time (Typ) Viewing Angle (H/V) Recommend resolution Analog (75ohms, 0.7/1.
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Chapter 2 Product definition and specification Region Product Name Model Number VSA / VSAP(M) VSE(E) VSCN(G) VSJ(J) VA712b VS10697 English, French, German, Italian, Spanish, Finnish, Japanese, Traditional Chinese, Simplified Chinese Vendor : CMO, Model # : A170E1Model # : Genesis 5126 OSD Languages TFT LCD Panel and Model # Scalar Input Signal Analog Sync Compatibility Audio Adapter Power Cable (1.8m, color: black, US type) Power Cable (1.8m, color: black, Schuko type) Power Cable (1.
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Chapter 3 GENERAL specification Test Resolution & Frequency Test Image Size 1280x1024 @ 60Hz Full Size Factory Default: Contrast = 70%, Brightness = 100% Contrast and Brightness Controls Chapter 4 VIDEO INTERFACE Analog Input Connector Digital Input Connector Default Input Connector Video Cable Strain Relief Video Cable Connector DB-15 Pin out DB-15 (Analog), refer the appendix A N/A Defaults to the first detected input Equal to twice the weight of the monitor for five minutes Compliant DDC 2B Video RGB
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Chapter 5 POWER SUPPLY Power Supply (Adapter) Input Voltage Range Input Frequency Range Short Circuit Protection Over Current Protection Leakage Current EFFICIENCY Fuse Power Dissipation Max Input AC Current INRUSH CURRENT (COLD START) Part Number: UP060B1190 or DA-60F19 90 TO 264 VAC 47 TO 63 HERTZ Output can be shorted without damage 3.476~4.74 A typical at 18.05 VDC 0.25mA (Max) at 264VAC / 60Hz 80 % typical at 115VAC Full Load Internal and not user replaceable 60 Watts (max) / 51 Watts (typ) 1.
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Chapter 7 Timing Table Item Timing Analog 1 640 x 350 @ 70Hz, 31.5kHz Yes 2 640 x 400 @ 60Hz, 31.5kHz Yes 3 640 x 400 @ 70Hz, 31.5kHz Yes 5 640 x 480 @ 60Hz, 31.5kHz Yes 6 640 x 480 @ 67Hz, 35.0kHz Yes 7 640 x 480 @ 72Hz, 37.9kHz Yes 8 640 x 480 @ 75Hz, 37.5kHz Yes 9 640 x 480 @ 85Hz, 43.27kHz Yes 10 720 x 400 @ 70Hz, 31.5kHz Yes 11 800 x 600 @ 56Hz, 35.1kHz Yes 12 800 x 600 @ 60Hz, 37.9kHz Yes 13 800 x 600 @ 75Hz, 46.9kHz Yes 14 800 x 600 @ 72Hz, 48.1kHz Yes 15 800 x 600 @ 85Hz, 53.
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VA712B Specifications ( for Digital) Chapter 1 General Descriptions TFTLCD PANEL Input Signal Sync Compatibility Compatibility Power Voltage Power Consumption Audio Ergonomics OSD Control Dimension Weight Operating Condition Storage Condition Regulation FEATURES Size Luminance (Typ, cd/㎡) Contrast Ratio (Typ) Colors ( 6 bit + 2 bit FRC) Response Time (Typ) Viewing Angle (H/V) Recommend resolution Analog (75ohms, 0.7/1.
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Chapter 2 Product definition and specification Region Product Name Model Number VSA / VSAP(M) VSE(E) VSCN(G) VSJ(J) VA712b VS10697 English, French, German, Italian, Spanish, Finnish, Japanese, Traditional Chinese, Simplified Chinese Vendor : CMO, Model # : A170E1Model # : Genesis 5126 OSD Languages TFT LCD Panel and Model # Scalar Input Signal Analog + Digital Sync Compatibility Audio Adapter Power Cable (1.8m, color: black, US type) Power Cable (1.8m, color: black, Schuko type) Power Cable (1.
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Chapter 3 GENERAL specification Test Resolution & Frequency Test Image Size 1280x1024 @ 60Hz Full Size Factory Default: Contrast = 70%, Brightness = 100% Contrast and Brightness Controls Chapter 4 VIDEO INTERFACE Analog Input Connector Digital Input Connector Default Input Connector Video Cable Strain Relief Video Cable Connector DB-15 Pin out DB-15 (Analog), refer the appendix A DVI-D (Digital), refer the appendix B Defaults to the first detected input Equal to twice the weight of the monitor for five
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Chapter 5 POWER SUPPLY Power Supply (Adapter) Input Voltage Range Input Frequency Range Short Circuit Protection Over Current Protection Leakage Current EFFICIENCY Fuse Power Dissipation Max Input AC Current INRUSH CURRENT (COLD START) Part Number: UP060B1190 or DA-60F19 90 TO 264 VAC 47 TO 63 HERTZ Output can be shorted without damage 3.476~4.74 A typical at 18.05 VDC 0.25mA (Max) at 264VAC / 60Hz 80 % typical at 115VAC Full Load Internal and not user replaceable 60 Watts (max) / 51 Watts (typ) 1.
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Chapter 7 Timing Table Item Timing Analog Digital 1 640 x 350 @ 70Hz, 31.5kHz Yes Yes 2 640 x 400 @ 60Hz, 31.5kHz Yes Yes 3 640 x 400 @ 70Hz, 31.5kHz Yes Yes 5 640 x 480 @ 60Hz, 31.5kHz Yes Yes 6 640 x 480 @ 67Hz, 35.0kHz Yes Yes 7 640 x 480 @ 72Hz, 37.9kHz Yes Yes 8 640 x 480 @ 75Hz, 37.5kHz Yes Yes 9 640 x 480 @ 85Hz, 43.27kHz Yes Yes 10 720 x 400 @ 70Hz, 31.5kHz Yes Yes 11 800 x 600 @ 56Hz, 35.1kHz Yes Yes 12 800 x 600 @ 60Hz, 37.9kHz Yes Yes 13 800 x 600 @ 75Hz, 46.9kHz Yes Yes 14 800 x 600 @ 72Hz, 48.
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3. Front Panel Function Control Description Adjusting the Screen Image Use the buttons on the front control panel to display and adjust the OnView® controls which display on the screen. The OnView controls are explained at the top of the next page and are defined in “Main Menu Controls” on page 10. Main Menu with OnView controls Front Control Panel shown below in detail Scrolls through menu options and adjusts the displayed control. Also a shortcut to display the Contrast adjustment control screen.
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Do the following to adjust the screen image: 1. To display the Main Menu, press button [1]. NOTE: All OnView menus and adjustment screens disappear automatically after about 15 seconds. This is adjustable through the OSD timeout setting in the setup menu. 2. To select a control you want to adjust, press S or T to scroll up or down the Main Menu. 3. After the control is selected, press button [2]. A control screen like the one shown below appears.
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Main Menu Controls Adjust the menu items shown below by using the up S and down T buttons. Control Explanation Auto Image Adjust sizes and centers the screen image automatically. Contrast adjusts the difference between the image background (black level) and the foreground (white level). Brightness adjusts background black level of the screen image. Audio Adjust Volume increases the volume, decreases the volume, and mutes the audio. Mute temporarily silences audio output.
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Control Explanation Information displays the timing mode (video signal input) coming from the graphics card in your computer, the LCD model number, the serial number, and the ViewSonic website URL. See your graphic cards user guide for instructions on changing the resolution and refresh rate (vertical frequency). NOTE: VESA 1280 x 1024 @ 60Hz (recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz. Manual Image Adjust Sub-menu H.
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Control Explanation Setup menu displays the menu shown below: Language allows you to choose the language used in the menus and control screens. Resolution Notice allows you to enable or disable this notice. If you enable the Resolution Notice shown above and your computer is set at a resolution other than 1280 x 1024, the following screen appears. OSD Position allows you to move the on-screen display menus and control screens.
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Hot Keys for Function Controls [1] Main Menu [2] Input toggle (Analog or Digital) or Auto Image Adjust. [▼] or [▲] To immediately activate Contrast menu. It should be change to Brightness OSD by push button [2] [▼] + [▲] Recall both of Contrast and Brightness to default [1] + [2] Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode [1] + [▼] + [▲] White Balance. (Not shown on user’s guide) [1] + [▼] Power Lock [1] + [▲] OSD Lock 1. Turn off [Power on/off] button.
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4. Circuit Description Circuit Description 1. Power supply (DC/DC Converter) The AT1741 is 2-channel PWM switching regulator controllers that contains an on-chip 2.5V reference, two error amplifier, an adjustable oscillator, two dead-time comparators, under voltage lockout circuitry and 2 common-emitter output. It is idea for step-up, step-down, and inverting converter.
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2. Flash Memory The F29C51001T/F29C51001B is a 1 Megabit, 5.0 Volt-only Flash Memory organized as 131,072 bytes of 8 bits each. This device is designed to use a 4.7 Volt to 5.3 Volt power supply to perform in-system programming. The 1 Megabit memory array is divided into thirty-two uniform blocks of 4 Kbytes each for data and/or code storage. The block architecture allows users to flexibly make chip erase or block erase operation.
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3. GM5120 The gm5116/26 is a graphic processing IC for Liquid Crystal Display (LCD) monitors at XGA/SXGA resolution. It provides all key IC functions required for the highest quality LCD monitors. On-chip functions include a high-speed triple-ADC and PLL, Ultra-Reliable DVI TM receiver, a high quality zoom and shrink scaling engine, an on-screen display (OSD) controller, digital color controls and an on-chip microcontroller (OCM).
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5. Adjustment Procedure 5-1 Function Test and Alignment Procedure 1. All Modes Reset You should do “All Model Reset” (Refer to Chap 3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults. 2. Auto Image Adjust The Auto Adjust is aimed to offer a best screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually. A.Turn the computer and LCD monitor on. B.
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7. 25 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 25% White (Gray) Inspection Item: Particle, Line Defect & Mura 8. 50 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 50% White (Gray) Inspection Item: Bright Dot, Particle, Line Defect & Mura 9. White Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Particle, Line Defect, Power, Image Remain & Mura 10.
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11. RED Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Red Inspection Item: Bright Dot, Partial & Line Defect 12. Green Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot, Partial & Line Defect 13. Blue Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot, Partial & Line Defect 14.
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16. Gray_Scale_0-100_H256 Test Signal: 1280*1024@60Hz Test Pattern: Horizontal 64(256) Gray Scale (Up → Down，From 0 to 100% White) Inspection Item: Line Defect & Function Defect 16. Block Window Test Signal: 1280*1024@60Hz Test Pattern: Black block at the center Inspection Item: Cross Talk & Optical Character 17.
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5-2 Function Test Display pattern Item Pattern Description Remark 1 Gray_Scale_0-100_V 2 Gray_Scale_0-100_H 3 Black Full Screen Black Figure 3 4 Red Full Screen 50% Red Figure 4 5 Green Full Screen 50% Green Figure 5 6 Blue Full Screen 50% Blue Figure6 7 White Full Screen White Figure7 8 Black_Tile Black Tile Under White Background Figure 8 Vertical 64 (256) Gray Scale (右→左，From 0 Figure 1 to 100% White) Horizontal 64 (256) Gray Scale (上→下，From Figure 2 0 to 100% White) Fig
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Figure 5 Figure 5 Figure 6 Figure 7 Figure 8 Confidential - Do Not Copy ViewSonic Corporation 29 VA712-1_VA712b-1
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5-3 Function Test and Alignment Procedure 1. All Modes Reset You should do “All Model Reset” (Refer to Chap 3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults. 2. Auto Image Adjust The Auto Adjust is aimed to offer a best screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually. A.Turn the computer and LCD monitor on. B.
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BIOS Update Flow for Genesis 1.1 Program： 1. 1. 1. Software a. Please download the file “ Genesis” from CMO E-Sir system. There are ISP & BIOS two files, kindly see as below. a) ISPACK.EXE: Main program GProbe4.2.0.3.exe b) Ancillary .ISPACK.EXE ：Description program GProbe4.2.0.3_gm5126.exe 1.1. 2.
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1.1.3 Join R232, monitor cable, and adapter. Detail, see the example picture as below.
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1.2 Installation： A. Please install the programs respectively as below. GProbe4.2.0.3_gm5126.exe GProbe4.2.0.3.exe Before Setup produce GProbe 4 file . Please set at ISP & BIOS software file. B. I S & BIOS software file to be about to produce the next. (If the file existence already, needn’t to ISP.GProbe repeat.) This system is applied to Win 95/98/NT/2000. 1.3 ISP Execution Gprobe.exe :ISP exe. Main program : Drive write file. Pre.txt : Drive read file. Readme.txt : Ancillary file. 5126bc14.
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1. Open ISP.Gprobe while parameters set up have been completed. ISP.GProbe 2. You will see the picture as below.
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3. Execute the main program (Grope). Choose the item for parameter link while program execution 4.
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5.
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6. Execute Pre.txt：Input BATCH PRE.TXT Input “ BATCH PRE.TXT” The system can execute ISP while the words show up If appear line 3 is OK, Appear line 2 is Error. Please check wiring.
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7. Please check the entity connection and execute Gprobe 4 again once Debug Mode did not show up ISP Program execution：Input BATCH ( update of BIOS Rev) .TXT Key “BIOS Rev.” which you want here. This is the “BIOS update total spending time”. ※ If failed, Please don’t turn off power. Repeat do it again, from step 6 to step 7. 8. When everything is done. Please turn off the power and restart it again. Check Factory Mode and make sure it already be updated.
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6.
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Defect Mode Failure Analysis A Repair Testing “ Panel Chan e” Should be Performed to Level 3 Repair stage Check PCB Flicker AD/B Change P/B Change Gray value display R.G.
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Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage ON/OF No Power Check PCB AD/B Change Abnormal P/B Change CNT/B Change Check Wire PW cable Change OSD cable Change LED display abnormal Check PCB LED Off AD/B Change LED Dark P/B Change LED Abnormal OSD cable Change LED Flicker Check Wire Power wire connector Cable change Abnormal Keyboard Check PCB Unavailable AD/B Change P/B Change Check Wire OSD cable Change NG Next Step TEST
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Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage Can’t Input Check PCB AD/B Change Abnormal BIOS CNT/B Change &OSD Check Wire Can’t Reader Other Abnormal Display Display Shut Check PCB Down D-sub cable change AD/B Change P/B Change CNT/B Change Display flicker Check Panel Panel Change Check PCB AD/B Change (tapping ) CNT/B Change Check Panel P/B Change NG Next Step TEST Completed Confidential - Do Not Copy ViewSonic Corpor
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u Trouble Shooting Analysis Check the information in this section to see if the problems can be solved before requesting repair. Note：The consumers are only allowed to solve the problems described as below. Any unauthorized product modification, or failure to follow instructions supplied with the product will end the warranty immediately. l No image - Make sure power button is ON. - Check whether the LCD monitor and computer power cords are plugged and whether there is a supply of power.
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7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VA712-1) ViewSonic Model Number:VS10697 Rev: 1a Due to the VA712-1 is *ISM model, therefore, it didn't have separate part number for panel. *ISM : Integrated Smart Module. Description Item ViewSonic P/N Ref. P/N Adapter, DA-60F19-AE, 19 V, 3.
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RECOMMENDED SPARE PARTS LIST (VA712b-1) ViewSonic Model Number: VS10697 Rev: 1a Due to the VA712-1 is *ISM model, therefore, it didn't have separate part number for panel. *ISM : Integrated Smart Module. Description Item ViewSonic P/N Ref.P/N 1 Adapter, DA-60F19-AE, 19 V, 3.
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BOM LIST (VA712-1) ViewSonic Model Number: VS10697 Rev: 1a Item ViewSonic P/N 1 #N/A 2 #N/A 3 #N/A 36X8607401 Driver IC,COG,Scan,HX8607APD400,263Channel,HIMAX SIC 4 4 5 6 7 #N/A #N/A #N/A #N/A 7344191016 7344191002 36X8002551 7344191011 1 1 10 1 8 #N/A 35A17X0211 9 #N/A 34A17X2X07 10 #N/A 01056FR001 11 #N/A 01056F1011 12 #N/A 01058FR001 COG_CF,AC-8405Z-23,1.
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Item ViewSonic P/N Ref.P/N 34 CB-00000546 3241700001 Location Location FFC-OSD,A170E1-H01,15Pin,180mm*16mm,Pitch=1.0mm Universal # Q'ty 1 45 #N/A 2304114001 46 #N/A 2503715151 TAPE-CONDUCTIVE,AL,??,125*30*0.08,A170E1H01,3M:AL-35R Screw,?3*P1.27*8,5.5*2,Steel Screw,M3*P0.5*4,5.5*2,Steel Screw,M3*P0.5*6,Steel Screw,M3*P1.27*12,5.5*2,Steel Washer,Stand Washer,3.1 mm,10 mm,CLT ME Software (EDID_DSUB),A170E1,Ver.VSCC81BA00,ViewSonic,Checksum(66 EDD ),Analog Port PCBA For A170E2-T,A170E2-H-K,Rev.
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Item ViewSonic P/N Ref.P/N #N/A PH0EAKN000 70 A-00002056 271906019K 71 CB-00000544 32F2818004 A-00000458 32E1818015 A-00000458 32E1818015 A-00002058 32E1818013 A-00002059 32E1818018 A-00002060 32E1818014 A-00002057 32E1818060 CB-00000547 32F3018003 72 73 Location Location Olympic,17",Accessory BOM,D-sub+Audio,UK / HK 3 pin,Black,For VSC Adapter,DA-60F19-AE,19 V,3.
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BOM LIST (VA712b-1) Model Number: VS10697 Rev: 1a Item ViewSonic P/N Ref.P/N Location Location Universal # 1 #N/A MH0E50EK01 17" Common BOM,E5-L08,72%,Scan COG,TFT Rev.
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Item ViewSonic P/N Ref.
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Item 57 ViewSonic P/N #N/A Ref.
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8. Exploded Diagram and Spare Parts List EXPLODED PARTS LIST (VA712/b-1) ViewSonic Model Number: VS10697 Rev: 1b Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Confidential - Do Not Copy ViewSonic Corporation 52 VA712-1_VA712b-1 ViewSonic P/N C-00002080 C-00002063 M-00000558 E-00003827 M-00000566 HW-00002078 B-00002061 B-00002079 B-00002062 CB-00000545 HW-00002077 C-00000465 C-00002081 C-00002065 C-00002082 C-00002064 CB-00000546 HW-00000556 HW-00000557 HW-00000553 HW-00000555 M-00000559 Ref.
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Monitor Assembly and Disassembly 1.1 Separate Stand Assy 1.1.
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1.2 Separate Rear Cover (Rear Case Assy) Loosen and remove 2 screws. Separate Bezel hooks to take Bezel and Rear Cover apart. Step 1 : Loose and remove 2 screws. Step 2 : Separate Bezel hooks to take Bezel and Rear Cover apart.
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1.3 Remove Power Board 1.3.1 Remove the Tinfoil 1.3.2 Remove FFC 1.3.
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Step 3 : Remove the Cover of X-PCB Step 4 : Completed 1.3.
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Step 5 : Fasten 4 screws to fixed Stand Assy Step 6 : Insert Cover Hinge Step 7 : Completed Confidential - Do Not Copy ViewSonic Corporation 65 VA712-1_VA712b-1
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9. Block Diagram OSD Key Pad Speaker Audio Out Audio In 3.
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10.
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VIN_19V1 VIN_19V LP1 DC/DC 1 MCB1608U121E LP2 MCB1608U121E LP3 MCB1608U121E VIN_19V TP VIN_19V TP V5A1 V5A 1 V5A TP TP VAA VAA1 VAA 1 VGH 1 TP [INV_GND] TP VGH VGH1 TP VGL TP RP51 VGL1 Power Sequence : 5V -> VL -> VH & AVDD 2 3 DP2 1 2 2 open 1 1 TP TP 1210/1u/50V/7/PbF QP2 CP10 0603/47K/5% 0603/100K/5% VAA open 1 2N7002/RoHS 1 ZDP3 0603/68K/5% 3 RP8 CP11 1 RP55 VAA 0603/33K/5% 2 3 QP13 2 TP TP RP6 open 1 RP4 1210/1u/50V/7/PbF 1 2 0603/1u/1
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V5A Audio AU5V V5A LA1 MHC1608S221N LA2 CA1 OPEN CA2 + 16CV220AX/RoHS 0603/100n/25V/Y/RoHS PA1 2 10 2 10 11 3 1 11 3 1 LA3 GND_POWER LA4 LA5 MCB1608S600H PC_R HS600 2SJ-0523-003 AU5V CA3 CA5 PC_L MCB1608S600H CA4 AU5V CA6 OPEN 0603/47p/50V/N/ROHS 0603/47p/50V/N/ROHS OPEN AU5V [AUDIO JACK] RA1 CA7 7 HP Sense VDD VDD VDD 21 0603/100K/5%/RoHS Left Out + 15 Left Out - 17 Left Dock Left Gain 2 18 12 Left In Left Gain 1 19 11 Beep In 10 Right In DC Vol 060
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CN4 PANEL INTERFACE V33B VSD MHC2012S420R 3 VDD 2 0603/100n/25V/Y 2 + C41 Open VSA XAO 2 GMA6 GMA7 GMA8 GMA9 GMA10 C256 2 Open OPEN OPEN EG0N EG0P EG1N EG1P EG2N EG2P C42 1210/10u/16V/Y 0603/100n/25V/Y EB0N EB0P EB1N EB1P EB2N EB2P MCB1608U121E + C43 ESTH 1 VGH_P C44 VCOM VCOM VCOM VCOM R177 1210/10u/25V/Y OPEN 0603/100n/25V/Y 21.
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V5A POWER VPREF1 VPREF 1 L25 VPREF 0603/4.7R/1%/RoHS R30 3 1 Vout V33A GND VS1 C53 GMA1 C54 V33A 1 TP TP (Digital VCC) C55 2 0603/100n/25V/Y V33A1 AIC1722-33CX Vin 1 C57 U4 MHC2012S420R V5A C56 R31 C58 OPEN 0603/100n/25V/Y 1210/10u/16V/Y MHC2012S420R 2 AMC431BDBT 1 OPEN 3 2 R38 1210/10u/16V/5 0603/100n/25V/Y 2.5V R39 1 2 1 R40 2 0603/18K/1% R36 R41 1 MHC2012S420R 3 GMA3 0603/27.
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VOL_MUTE1 SCALER L30 3_3V_DVDD MHC2012S420R C109 C110 C111 1 C112 C113 PANEL_ON/OFF 1 INV_ON/OFF 1 VCM_PWM 1 VOL_ADJ1 VOL_ADJ 1 C114 3_3V_X 3_3V_DVDD1 0603/100n/25V/Y V33C C103 1 PANEL_ON/OFF1 3_3V_X 0603/100n/25V/Y V33C VOL_MUTE INV_ON/OFF1 3_3V_X TP 3_3V_DVDD C115 2_5V_VDD TP 1206/22u/10V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y C123 C124 C125 C126 C127 C128 TP 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 0603/100n/25V/Y 06
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DVI_5V1 DVI_5V DVI INPUT 1 TP TP DVI_5V DDC_SCL DDC_SDA V5A DVI_5V 1 1 V5A D1 D2 1N4148WS SHELL1 31 DATA2DATA2+ DATA2/4_SHLD DATA4DATA4+ DDC_CLK DDC_DATA A_VSYNC DATA1DATA1+ DATA1/3_SHLD DATA3DATA3+ +5V GND H_PLUG_DET DATA0DATA0+ DATA0/5_SHLD DATA5DATA5+ CLK_SHLD CLK+ CLK- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SHELL2 32 R166 0603/3.
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16 D_Sub INPUT TXD 1 TXD TXD TP GSDAI 12 G_HSYNC 13 C4 TP RXD1 RXD 1 G_VSYNC 0603220KV05T/RoHS TP 15 89263-6762 L1 GRAI 1 6 2 7 3 8 4 9 5 10 14 GSCLI TP GRAI JP1 11 GGAI GBAI RXD RXD VGA_5V C5 17 TXD1 0603220KV05T/RoHS R6 0603/100R/5% R7 GGAI L2 R8 0603/100R/5% L3 R10 0603/100R/5% 0603/10n/25V/7/RoHS RED+ C7 0603/10n/25V/7/RoHS RED- 0603/57.6R/1% C8 0603/10n/25V/7/RoHS GREEN+ C9 0603/10n/25V/7/RoHS GREEN- BK1608HS121 R9 GBAI C6 BK1608HS121 0603/57.
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INV_ADJ2 INV_ADJ 1 3_3V_X INVERTOR INPUT CN1 3273-008-10 INV_ON/OFF INV_ADJ C501 V33A Open VIN_19V R190 OPEN 0603/1K R191 OPEN 0603/3.
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OSD INTERFACE V33A V33A R115 4 3 2 1 0603*4/10K/5% R116 0603/10K/5% 5 6 7 8 RP49 0603/10K/5% LP7 5 6 7 8 5 6 7 8 LP8 SOURCE_SELECT AUTO_ADJ MENU KEY_DOWN KEY_UP LED_G LED_O PWR_SW L14 L15 L34 L35 AUDIO/R+ AUDIO/RAUDIO/L+ AUDIO/L- CN2 0603*4/22R/5% 4 3 2 1 4 3 2 0603*4/22R/5% 1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 MCB1608S600H MCB1608S600H MCB1608S600H Confidential - Do Not Copy 76 VA712-1_VA712b-1 0603*4/100n/25V CP38 5 6 7 8 CP37 5 6 7 8 0603*4/100n/25V ViewSonic Corporation 7101-15
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* Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation. Assessment A. What do you think about the content of this Service Manual? Unit Excellent Good Fair Bad 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6.