VA 912B Service Manual

March 29, 2018 | Author: Bigkamikase | Category: Power Supply, Computer Monitor, Hertz, Computer Engineering, Electronics
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Service ManualViewSonic VA912/b-3 Model No. VS10931 19” Color TFT LCD Display ( VA912/b- 3_SM Rev. 1a Oct. 2005) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583 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 m eans, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation. Disclaimer ViewSonic makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes. Trademarks Optiquest is a registered trademark of ViewSonic Corporation. ViewSonic is a registered trademark of ViewSonic Corporation. All other trademarks used within this document are the property of their respective owners. Revision History Revision SM Editing Date ECR Number Description of Changes Editor 1a 10/12/05 Initial Release G. Han ViewSonic Corporation I Confidential-Do Not Copy VA912/b-3 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6. Troubleshooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram and Exploded Parts List 9. Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams 1 5 10 16 18 42 48 53 55 56 69 ViewSonic Corporation Confidential-Do Not Copy VA912/b-3 II Safety Check Care should be taken while servicing this LCD display. press at the far ends of the CFL Reflector edge softly. video cable. Appropriate Operation (1) Turn off the product before cleaning. it may break or crack if dropped or bumped on hard surface. (2) Use only a dry soft cloth when cleaning the LCD panel surface. or strange odor is present. waxes or solvents for your cleaning. do not press the center of the CCFL Reflector edge. (8) Do not press the reflector sheet at the back of the module in any direction. be sure not to rotate or tilt the Interface Connector of the TFT Module. abnormal noise. (3) Wipe off water drops immediately. (5) Since the panel is made of glass. (10) Do not operate the product under the following conditions: . do not twist or ViewSonic Corporation 1 Confidential-Do Not Copy VA912/b-3 . Service work should only be performed after you are thoroughly familiar with all of the following safety checks and servicing guidelines. (5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time. (9) In the event that a Module must be put back into the packing container slot after it was taken out of the container. (6) Since CMOS LSI is used in this module. (11) After installation of the TFT Module into an enclosure (LCD monitor housing. . . (2) Be sure to turn off power supply when connecting or disconnecting input connector. the voltage is exposed in such areas as the associated transformer circuits. .Near any appliance generating a strong magnetic field. Precautions and Safety Notices 1. or power cord. Because of the high voltage used in the inverter circuit. (7) Do not touch the LCD panel surface with sharp or hard objects. wipe it with absorbent cotton or other soft cloth. 2. Instead. (3) Use a soft cloth soaked with mild detergent to clean the display housing. (10) At the insertion or removal of the Signal Interface Connector. immediately switch the LCD display off. (6) If smoke. safety approved AC/DC power cord. (9) Do not use abrasive cleaners. cold or humid environment. take care of static electricity and ensure human earth when handling.1 Handling Precautions (1) Since front polarizer is easily damaged. 4. (7) Do not open or modify the Module Assembly. (8) Do not place heavy objects on the LCD display. (4) When the panel surface is soiled. LCD Module Handling Precautions 4. Caution No modification of any circuit should be attempted.Areas containing excessive dust and dirt. 3. Otherwise the TFT Module may be damaged.In direct sunlight.1. (4) Use only a high quality. pay attention not to scratch it. for example). Long contact with water may cause discoloration or spots.Extremely hot. (13) The LCD module contains a small amount of materials having no flammability grade. ViewSonic Corporation 2 Confidential-Do Not Copy VA912/b-3 . The LCD module should be supplied with power that complies with the requirements of Limited Power Source (IEC60950 or UL1950). or an exemption should be applied for.bend the TFT Module even momentarily. When designing the enclosure. Otherwise the TFT Module may be damaged. Please follow local ordinances or regulations for disposal. it should be taken into consideration that no bending/twisting forces may be applied to the TFT Module from outside. (14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950 or UL1950). Do not connect the CCFL to a Hazardous Voltage Circuit. (12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. 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. Do not touch the surface of the polarizer . ViewSonic Corporation 3 Confidential-Do Not Copy VA912/b-3 . That may cause “ MURA“.Correct methods : Only touch the metal-frame of the panel or the front cover of the monitor. Correct Methods : Place the monitor on a clean & soft foam pad . That could scratch the surface of panel ViewSonic Corporation 4 Confidential-Do Not Copy VA912/b-3 . Incorrect Methods : Place the monitor on foreign objects . refer the appendix B Defaults to the first detected input Equal to twice the weight of the monitor for five minutes Compliant DDC 2B 1. 800 x 600. 720 x 400* (640 x 400*). Brightness = 100% 2. ViewSonic Corporation 5 Confidential-Do Not Copy VA912/b-3 . Exclusions Not compatible with interlaced video 75 Ohms (Analog) 950 mV with no damage to monitor 1250 mV with no damage to monitor TTL Compliant with Revision 1. Video Signals 2.3 Separate Sync Shall be compatible with all PC type computers. 1152 x 870. and after market video cards 640 x 350*.2 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). Specification 2-1General Specifications Test Resolution & Frequency Test Image Size Contrast and Brightness Controls Contrast = 70%. Video RGB (Analog) DVI (Digital) 1280x1024 @ 60Hz Full Size Factory Default: Separate Video Impedance Maximum PC Video Signal Maximum Mac Video Signal Sync Signals DDC 2B Sync Compatibility Video Compatibility Macintosh computers. 1280 x 960. 832 x 624.2. 1024 x 768. refer the appendix A DVI-D 24pin. 1280 x 1024 Resolution Compatibility * The image vertical size might not be full screen. But the image vertical position should be at the center. 1280 x 720. 640 x 480. CCC Type Power Cable Length = 1. 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) Power Supply Cold Start with all combinations of input voltage. Connects to display. European Type Power Cable Length = 1. input frequency. Connects to display.3KV Power Supply Line Surge Immunity (L-PE) with no damage Shall be able to function properly. 50Hz Shall start and function properly when under full load. when ½ cycle of AC power is randomly missing at nominal input The power supply shall not produce audible noise that would be detectable by the user.5 A typical at 5 VDC 3.3~4.2-3 POWER SUPPLY Part Number: 27-D003115 100 TO 240 VAC 50 TO 60 HERTZ Output can be shorted without damage 3. Audible shall defined Power Supply Acoustics to be in compliance with ISO 7779 (DIN EN27779:1991) Noise measurements of machines acoustics. Color = Black Schuko CEE7-7 type plug.5 mA (Max) at 254VAC / 60Hz 80 % typical at 115 VAC Full Load Internal and not user replaceable 58 (Max) Watt 1.8m. Power Switch noise shall not be considered Separate 3-prong NEMA 5-15P type plug. Length = US Type Power Cable 1. 120A(max) @ 240VAC . Color = Black Separate 3-prong type plug.8m. and operating temperature Shall be able to withstand an EN61000-4-4 ± 2KV Power Supply Transient Immunity transient test with no damage Shall be able to withstand ±2KV (L-L) and ± 2. without reset or visible Power Supply Missing Cycle Immunity screen artifacts.8 A rms @ 100 VAC.8m. Connects to display. Color = Black Power Saving Operation(Method) Power Consumption ViewSonic Corporation VESA DPMS Signaling ON Mode < 58 W (max) 6 Confidential-Do Not Copy VA912/b-3 . 135 MHz (EDID file is 140MHz) Independent of sync polarity. 37.5kHz 640 x 400 @ 60Hz.1kHz 1024 x 768 @ 75Hz.7kHz 832 x 624 @ 75Hz.5kHz 640 x 480 @ 60Hz. 37.1kHz 800 x 600 @ 60Hz.5kHz 640 x 480 @ 67Hz. 49. 35. 31.9kHz 800 x 600 @ 72Hz.5kHz 800 x 600 @ 56Hz.27kHz 720 x 400 @ 70Hz. 35. Timing Table Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Timing 640 x 350 @ 70Hz.1kHz 800 x 600 @ 85Hz. 79. 68. 68. 31. 31. 48. the vertical image size might not be full screen.9kHz 640 x 480 @ 75Hz.5kHz 640 x 480 @ 85Hz. 45kHz (HDTV) Analog Yes Yes* Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Digital Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Note 1:When Vertical frequency at 85Hz or resolution.5kHz 1024 x 768 @ 72Hz. 43.ACTIVE OFF < 2 W Recovery Time ON MODE = N/A. 31. ACTIVE OFF < 3 SEC 2-4 ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency Vertical Refresh Rate Maximum Pixel Clock Sync Polarity 30 – 82 KHZ 50 – 85* HZ.0kHz 640 x 480 @ 72Hz. 60. 63. 48. But the ViewSonic Corporation 7 Confidential-Do Not Copy VA912/b-3 .97kHz 1280x 720 @ 60Hz. 46. 53.7kHz 1024 x 768 @ 60Hz. 31. 58.4kHz 1024 x 768 @ 70Hz.9kHz 800 x 600 @ 75Hz. 37.67kHz 1152 x 870 @ 75Hz.7kHz 1280 x 1024 @ 60Hz.0kHz 1024 x 768 @ 85Hz.5kHz 640 x 400 @ 70Hz. 56.4kHz 1280 x 1024 @ 75Hz. 5 mm stereo jack 1. when the Audio Cable is connected 2-6 TFT LCD PANEL Panel Source Identify (1) ID label . (See Figure 3) ViewSonic Corporation 8 Confidential-Do Not Copy VA912/b-3 .8m length Note: There is no guarantee <1 W power Audio DPMS consumption in Active Off mode. Note2: *: The vertical image size might not be full screen.5mm stereo cable / 1.0Vrms@1kHz 10k ohm 2W 72db F0 -20kHz (F0 : Lowest resonant freq.) <8% THD @1kHz There should be no audible vibration with volume at Line input connection Line input signal Line input impedance Maximum power output (Electric) Signal to Noise Ratio Frequency response Distortion Vibration 100%.The panel code “B” for CMO panel should be shown on the lower right side of UPC label. (Input signal within 1 Vrms) There should be no affect on the screen image Screen image stability under any conditions Connector PC99 requirement Audio in Cable type / length Lime Green pantone # 577C 3. (See Figure 2) (2) UPC label .vertical image position should be at the center.The panel code “B” for CMO panel should be shown on the lower right side of ID label. 2-5 AUDIO INTERFACE (SPEAKER SPECIFICATION) 3. ViewSonic Corporation 9 Confidential-Do Not Copy VA912/b-3 . Brightness Uniformity (13 Points) U = Min Luminance in 13 points / Ma x Luminance in 13 points Contrast Ratio Color Depth 450 (typ). 250 (min) 16 million colors (6 bit + 2 bit FRC) @ CR>10 Viewing Angle (Horizontal) Typical: Minimum: @ CR>10 VIEWING ANGLE (VERTICAL) Typical: 130 150 130 @ CR>5 Typical: Minimum: @ CR>5 Typical: Minimum: TBD TBD TBD TBD Minimum: 110 Response Time 10% -90% @ Ta=25°C Panel Defects 8ms (Tr= 2 ms.294 mm Anti Glare (Hard coating 3H) 4 CCFL (L type).000 Hours (min) 280 cd/m2 (Typ after 15 minute warm up) 180 cd/m2 (M in after 15 minute warm up) U = 76% (typ). Tf = 6 ms) (typ) 18 ms (Tr= 7 ms. 67% (M in).Panel Characteristics: Model number Type Active Size Pixel Arrangement Pixel Pitch GLASS TREATMENT # OF BACKLIGHTS BACKLIGHT LIFE Luminance (Center) – Condition: CT = 6500K. Brightness = Max A190E3 TN type with RSDS interface 376. Tf = 11 ms) (max) Please see Panel Quality Specifications. Edge Light BLU 50.32 (H) x 301.056 (V) RGB Vertical Stripe 0. Contrast = Max. Also a shortcut to toggle analog and digital connection. Main Menu with OSD controls Front Control Panel shown below in detail Displays the Main Menu or exits the control screen and saves adjustments. Also toggles between two controls on some screens. Front Panel Function Control Description Adjusting the Screen Image Use the buttons on the front control panel to display and adjust the OSD controls which display on the screen. Displays the control screen for the highlighted control.Do Not Copy VA912/b-3 . Scrolls through menu options and adjusts the displayed control. Audio Mute button turns the sound off Power light Green = ON Orange = Power Saving Standby Power On/Off ViewSonic Corporation 10 Confidential . Also a shortcut to display the Contrast adjustment control screen.3. The OSD controls are explained at the top of the next page and are defined in “Main Menu Controls” on page 10. POSITION and V. 3. This is adjustable through the OSD timeout setting in the setup menu. 4. To save the adjustments and exit the menu. POSITION until the screen image is completely visible.) ViewSonic Corporation 11 Confidential-Do Not Copy VA912/b-3 . You can toggle between control screens. The command line at the bottom of the control screen tells what to do next from this screen. To adjust the setting. press button [2]. To select a control to adjust. or exit the screen. make small adjustments using H. The following tips may help you optimize your display: • Adjust the computer's graphics card so that it outputs a 1280 x 1024 @ 60Hz video signal to the LCD display. After the desired control is selected. A control screen like the one shown below appears. press the up or down buttons. 5.) • If necessary. adjust the selected option. To display the Main Menu. (The black border around the edge of the screen should barely touch the illuminated “active area” of the LCD display. press button [1]. NOTE: All OSD menus and adjustment screens disappear automatically after about 15 seconds. press or to scroll up or down in the Main Menu. 2. (Look for instructions on “changing the refresh rate” in the graphics card's user guide. press button [1] twice.Do the following to adjust the display setting: 1. Auto Image Adjust sizes and centers the screen image automatically. Brightness adjusts background black level of the screen image. Color Adjust provides several color adjustment modes. green (G). The factory setting for this product is 6500K (6500 Kelvin). 6500K-Adds red to the screen image for warmer white and richer red. Audio Adjust Volume increases the volume. 9300K-Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting). Contrast adjusts the difference between the image background (black level) and the foreground (white level). ViewSonic Corporation 12 Confidential .Do Not Copy VA912/b-3 . and mutes the audio. 5400K-Adds green to the screen image for a darker color. decreases the volume. and blue (B). Mute temporarily silences audio output.Main Menu Controls Adjust the menu items shown below by using the up Control Explanation and down buttons. Input Select toggles between inputs if you have more than one computer connected to the VA912/VA912b. including preset color temperatures and a User Color mode which allows independent adjustment of red (R). Information displays the timing mode (video signal input) coming from the graphics card in the computer. ViewSonic Corporation 13 Confidential-Do Not Copy VA912/b-3 . See your graphics card’s user guide for instructions on changing the resolution and refresh rate (vertical frequency). and the ViewSonic® website URL. Important: If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode./V. Position (Horizontal/Vertical Position) moves the screen image left or right and up or down. 1. User Color Individual adjustments for red (R). NOTE: VESA 1280 x 1024 @ 60Hz (recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz. Size (Horizontal Size) adjusts the width of the screen image. colors return to the 6500K factory preset. To select color (R. G or B) press button [2]. Manual Image Adjust Sub-menu H. and blue (B). H.Control Explanation 5000K-Adds blue and green to the screen image for a darker color. the serial number. the LCD model number. green (G). 2. press and . To adjust selected color. Resolution Notice allows the user to enable or disable this notice. with a “30 second” setting. Setup Menu displays the menu shown below: Language Select allows the user to choose the language used in the menus and control screens. NOTE: Try Auto Image Adjust first. the following screen appears.Control Explanation Fine Tune sharpens the focus by aligning text and/or graphics with pixel boundaries. For example. OSD Position allows the user to move the OSD menus and control screens.Do Not Copy VA912/b-3 . ViewSonic Corporation 14 Confidential . the display screen disappears. If you enable the Resolution Notice shown above and your computer is set at a resolution other than 1280 x 1024. OSD Timeout sets the length of time the OSD screen is displayed. Sharpness adjusts the clarity and focus of the screen image. if a control is not pushed within 30 seconds. Control Explanation OSD Background allows the user to turn the OSD background On or Off. Memory Recall returns the adjustments back to factory settings if the display is operating in a factory Preset Timing Mode listed in the Specifications of this manual. ViewSonic Corporation 15 Confidential-Do Not Copy VA912/b-3 4. Circuit Description Circuit Description 1. Power supply (DC/DC Converter) The AAT1109 is a one-channel step-up PWM controller incorporating a soft-start and a short circuit protection (SCP) function. This device consists of an on-chip voltage reference, error amplifier, pulse width modulation controller, under-voltage lockout protection, soft-start, and short circuit protection circuits. ViewSonic Corporation 16 Confidential - Do Not Copy VA912/b-3 2. Micro Controller The MTV312M micro-controller is an 8051 CPU core embedded device especially tailored for CRT/LCD Monitor applications. It includes an 8051 CPU core, 1024-byte SRAM, 14 built-in PWM DACs , VESA DCC interface, 4-channel A/D converter , and a 64K-byte internal program FLASH-ROM. 3. TSU57AK The TSU57AK is a high performance, and fully integrated graphics process IC solution for LCD monitors with resolution up to SXGA. It is configured with an integrated triple-ADC/PLL, a high quality scaling engine, an on-screen display controller, a built-in output clock generator, a panel timing controller (TCON), an integrated DVI receiver, and RSDS display interface. To further reduce system costs, the TSU57AK also integrates intelligent power management control capability for green-mode requirements and spread-spectrum support for EMI management. ViewSonic Corporation 17 Confidential-Do Not Copy VA912/b-3 during which time you will notice the image change. Function Defect & Mura ViewSonic Corporation 18 Confidential-Do Not Copy VA912/b-3 . Hot Keys for Function Control) -Make sure the F/W is the latest version.1 All Modes Reset You should do “All Model Reset” (Refer to Chap 3.5 Window Shut Down Test Signal: 1280*1024@60Hz Test Pattern: Checkered Pattern Every One Pixel (50%Green & 50%B lue) Inspection Item: Flicker. A. 5.5. Function Test and Alignment Procedure 5. 5. Mura 5.3 Firmware Test Patten : Burn in Model (Refer to Chap3. B. The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive seconds. the user has to adjust each function manually. For optimum screen quality. 5. 5. Adjusting Procedure A. C. Press the ‘Auto’ button on monitor keypad to Auto Adjust.Turn the computer and LCD monitor on.2 Auto Image Adjust The Auto Adjust is aimed to offer a best screen quality by built-in ASIC. This action will allow you to erase all end-user’s settings and restore the factory defaults.4 DCC Test Patten: EDID program -Make sure it can pass test program.6 Window BG Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Line Defect. Hot Keys for Function Controls) first. 8 50 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 50% White (Gray) Inspection Item: Bright Dot.5. Line Defect & Power ViewSonic Corporation 19 Confidential-Do Not Copy VA912/b-3 . Line Defect.9 White Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Particle. Line Defect & Mura 5. Image Remain & Mura 5. Power. Line Defect & Mura 5.10 Black Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Bright Dot. Particle.7 25 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 25% White (Gray) Inspection Item: Particle. 11 RED Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Red Inspection Item: Bright Dot.5.12 Green Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot. Partial & Line Defect 5.13 Blue Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot. Partial & Line Defect 5.14 Gray_Scale_0-100_V256 Test Signal: 1280*1024@60Hz Test Pattern: Vertical 64 (256) Gray Scale (Right ¡÷ Left¡AFrom 0 to 100% White) Inspection Item: Line Defect & Function Defect ViewSonic Corporation 20 Confidential-Do Not Copy VA912/b-3 . Partial & Line Defect 5. 17 Black_Tile Test Signal: 1280*1024@60Hz Test Pattern: Black tile under white background Inspection Item: Function Defect & Image Remain ViewSonic Corporation 21 Confidential-Do Not Copy VA912/b-3 .5.15 Gray_Scale_0-100_H256 Test Signal: 1280*1024@60Hz Test Pattern: Horizontal 64(256) Gray Scale (Up ¡÷ Down¡AFrom 0 to 100% White) Inspection Item: Line Defect & Function Defect 5.16 Block Window Test Signal: 1280*1024@60Hz Test Pattern: Black block at the center Inspection Item: Cross Talk & Optical Character 5. 5-18. Function Test Display pattern Item 1 Pattern Gray_Scale_0-100_V Description Vertical 64 (256) Gray Scale (¥k¡÷¥ª¡A From 0 to Remark Figure 1 100% White) Horizontal 64 (256) Gray Scale (¤W¡÷¤U¡A From 0 2 3 4 5 6 7 8 Gray_Scale_0-100_H to 100% White) Black Red Green Blue White Black_Tile Full Screen Black Full Screen 50% Red Full Screen 50% Green Full Screen 50% Blue Full Screen White Black Tile Under White Background Figure 3 Figure 4 Figure 5 Figure6 Figure7 Figure 8 Figure 2 FIGURE 1 FIGURE 2 Figure 3 Figure 4 ViewSonic Corporation 22 Confidential-Do Not Copy VA912/b-3 . Figure 5 FIGURE 5 FIGURE 6 FIGURE 7 FIGURE 8 ViewSonic Corporation 23 Confidential-Do Not Copy VA912/b-3 . EXE: Main program b) Ancillary . BIOS update procedure BIOS Update User Guide BIOS U FLOW FOR GENESIS 1. see the example picture as below.EXE ¡GDescription program 1. 2. There are ISP & BIOS two files. Please download the file “ M-Star” from CMO E-Sir system. 1. PC BASE. Software a.B.Hardwar •D_Sub cable ¡] 15Pin¡^ •Point plug [24Pin] Point plug D_Sub cable OR Without to affect 1.ISPACK.1 Program¡G 1. 1. ViewSonic Corporation 24 Confidential-Do Not Copy VA912/b-3 .1.3 Join VGA Cable. a) ISPACK. kindly see as below.1. C.3 ISP Execution 1.2 Installation¡G A. ISP & BIOS software file to be about to produce the next.1.) This system is applied to Win 95/98/NT/2000.1: ISP Tool Main Menu ViewSonic Corporation 25 Confidential-Do Not Copy VA912/b-3 . Isp. needn’t to set up. (If the file existence already. Please install the programs respectively as below.lnk 1.lnk Fig. Settings: Double Click Isp. repeat. B. 4C 7C 4C 77 For A190E3 Key in “OK” 3. Select correct Micro Controller as Fig.2. it is required to enter Security Data Please press . then input related information as Fig.2. When ISP Tool executing at the first time. Step 2 Load MCU File Step 1 Select MTV312M64 ViewSonic Corporation 26 Confidential-Do Not Copy VA912/b-3 .3. Installation software.4. Select want download correct file Step 4 Press RUN Step 3 Example : The path of software ViewSonic Corporation 27 Confidential-Do Not Copy VA912/b-3 . 4.1. When everything is done. Please turn off the power and restart it again. ViewSonic Corporation 28 Confidential-Do Not Copy VA912/b-3 .Verification BIOS Update whether success 5. Check Factory Mode and make sure it already be updated. Separate Stand Assy 1. Step 3 : Loose and Remove 4 screws. Step 2 : Remove Cover Hinge. Step 4: Remove Stand Assy. Monitor Assembly and Disassembly 1.1 Remove Stand Cover Step 1 : Press Stand Assy’ bottom part in s Seat Hinge. Step 5: Completed ViewSonic Corporation 29 Confidential-Do Not Copy VA912/b-3 .C. Step 4 : Completed ViewSonic Corporation 30 Confidential-Do Not Copy VA912/b-3 . Step 3 : Remove Rear Cover.2. Separate Bezel hooks to take Bezel and Rear Cover apart. Step 1 : Loose and remove 2 screws. Separate Rear Cover (Rear Case Assy) Loosen and remove 5 screws. Step 2 : Separate Bezel hooks to take Bezel and Rear Cover apart. Step 2 : Loose and remove 2 screws. Step 3 : Loose and remove 4 screws. ViewSonic Corporation 31 Confidential-Do Not Copy VA912/b-3 . Remove Power Board 3. 3.1 Remove 2 pieces of Backlight wires.2 Remove Metal Cover Step 1 : Loose and remove 4 screws.3. Step 2 : Loose and remove 4 screws.Step 4 : Remove the Cover of X-PCB. Step 5 : Completed 3. ViewSonic Corporation 32 Confidential-Do Not Copy VA912/b-3 .3 Remove Power PCBA Step 1 : Insert 2 pieces of Backlight wires. Step 4 : Completed ViewSonic Corporation 33 Confidential-Do Not Copy VA912/b-3 .Step 3 : Remove Power PCBA. 1 Remove FFC Step 1 : Remove 2 FFC from AD PCBA.4. Step 3 : Completed 5. ViewSonic Corporation 34 Confidential-Do Not Copy VA912/b-3 . Change New Power Board Step 1 : Insert New Power PCBA. Remove AD PCBA 5. Step 2 : Fasten 4 fixed screws of Power PCBA . Step 2 : Remove FFC 5.2 Remove AD PCBA Step 1 : Loose and remove 4 screw Step 2 : Remove AD PCBA. ViewSonic Corporation 35 Confidential-Do Not Copy VA912/b-3 . Change New AD PCBA Step 1 : Place New AD PCBA. ViewSonic Corporation 36 Confidential-Do Not Copy VA912/b-3 . Step 3 : Insert FFC.Step 3 : Completed 6. Step 2 : Fasten 4 screw. Step 3 : Take OSD PCBA apart.Step 4 : Insert 2 FFC. Step 5 : Completed 7 Remove OSD PCBA Step 1 : Remove FFC. Step 2 : Separate both Audio Cable. ViewSonic Corporation 37 Confidential-Do Not Copy VA912/b-3 . Change New OSD PCBA Step 1 : Place New OSD PCBA. Step 2 : Insert Audit Cable to connectors of OSD PCBA. Step 3 : Completed.Step 4 : Completed. 8. ViewSonic Corporation 38 Confidential-Do Not Copy VA912/b-3 . Step 2 : Fasten the 4 screws. Add Cover to AD PCB Heatsink Step 1 : Join the cover hooks of X-PCB. Step 5 : Completed ViewSonic Corporation 39 Confidential-Do Not Copy VA912/b-3 . Step 4 : Fasten the 4 screws.9. Step 3 : Fasten 2 screws. Rear Assy Assembly Step 1 : Place Rear Cover. Step 4 : Completed ViewSonic Corporation 40 Confidential-Do Not Copy VA912/b-3 . Step 2 : Join Rear Cover with Bezel. Step 3 : Fasten 2 screws.10. Step 6 : Insert Cover Hinge. Stand Assy Assembly Step 1 : Place Stand Assy . Step 7 : Place Stand Assy.11. Step 5 : Fasten 4 screws to fixed Stand Assy. ViewSonic Corporation 41 Confidential-Do Not Copy VA912/b-3 . Trouble Shooting Flow Chart Defect Mode Failure Analysis Repair Testing Light On Test ¡° Panel Change” Should be Performed to Level 3 Repair stage Check PCB Check Panel Bright Dot Dark Dot Backlight Light Leakage Mura Image Sticking Brightness spot Particle Dot Defect No display Check PCB AD/B Change P/B Change CNT/B Change Check Panel Check Wire Noise Check PCB Check Panel Panel Change D-sub cable change AD/B Change Panel Change Check Panel Panel Change AD/B Change Panel Change Missing Line Abnormal Display N Next Step TEST A Completed ViewSonic Corporation 42 Confidential-Do Not Copy VA912/b-3 .6. G.Defect Mode Failure Analysis Repair Testing A “ Panel Chan e” Should be Performed to Level 3 Repair stage Flicker Check PCB AD/B Change P/B Change Check Panel Panel Change Gray value display Check PCB Check Panel AD/B Change Panel Change R.B display abnormal Check PCB AD/B Change CNT/B Change Check Panel Check Wire Display Shut Down Check Panel No signal Check PCB Check PCB Panel Change D-sub cable change AD/B Change P/B Change Panel Change AD/B Change CNT/B Change Check Wire Power on Display abnormal D-sub cable change AD/B Change Panel Change Check PCB Check Panel Next Step NG TEST Completed ViewSonic Corporation 43 Confidential-Do Not Copy VA912/b-3 . Defect Mode Failure Analysis Repair Testing ¡° “ Panel Change” Should be Performed to Level 3 Repair stage ON/OF Abnormal No Power Check PCB AD/B Change P/B Change CNT/B Change Check Wire PW cable Change OSD cable Change LED display abnormal LED Off LED Dark Check PCB AD/B Change P/B Change LED Abnormal OSD cable Change LED Flicker Check Wire Power wire connector Cable change Abnormal Keyboard Unavailable Check PCB AD/B Change P/B Change Check Wire OSD cable Change NG Next Step TEST Completed ViewSonic Corporation 44 Confidential-Do Not Copy VA912/b-3 . Defect Mode Failure Analysis Repair Testing ¡° “ Panel Change” Should be Performed to Level 3 Repair stage Abnormal BIOS &OSD Can’t Input Check PCB AD/B Change CNT/B Change Can’t Reader Check Wire D-sub cable change Other Abnormal Display Display Shut Down Check PCB AD/B Change P/B Change CNT/B Change Check Panel Display flicker (tapping ) Check Panel Check PCB Panel Change AD/B Change CNT/B Change P/B Change Next Step NG TEST Completed ViewSonic Corporation 45 Confidential-Do Not Copy VA912/b-3 . l No Signal Input u Check the signal connection between the computer and LCD monitor. l Image is not centered u u u Use OSD Image Menu to adjust H_Position and V_Position. l Distorted image u u Reset the LCD monitor Take off e xtra accessories (such as signal extension cord). l Image too bright u Adjust brightness and contrast by OSD. l “Out of Range” u Check the computer image output resolution and frequency and compare the value with the preset values (Please refer to [Appendix-Display Mode]). l Size is not appropriate 46 Confidential-Do Not Copy ViewSonic Corporation VA912/b-3 . or failure to follow instructions supplied with the product will end the warranty immediately.u Trouble Shooting Analysis Check the information in this section to see if the problems can be solved before requesting repair. l Image too dark u Adjust brightness and contrast by OSD. Any unauthorized product modification. l Irregular image u u Check the signal connection between the computer and LCD monitor. l No image u u Make sure power button is ON. Perform Auto Adjust. l Fuzzy Image u Adjust Phase. Note¡G The consumers are only allowed to solve the problems described as below. Check whether the LCD monitor and computer power cords are plugged and whether there is a supply of power. Perform Auto Adjust. Check image size setting. l Dark area distorted u Use OSD Color Menu to adjust color setting. ViewSonic Corporation 47 Confidential-Do Not Copy VA912/b-3 .u u u Use OSD Image Menu to adjust H_Position and V_Position. Perform Auto Adjust. Check image size setting. u Use OSD Color Menu to adjust color setting. l Color too dark u Use OSD Color Menu to adjust color setting. l White color is not white u Use OSD Color Menu to adjust color setting. 0. SP-023+IS-14.W2F 40-D003820 Hontech Precision Industry 13 ) Audio Cable.C.K. SVT#18/3C. BLACK C. BSI. CT-12.W2F 40-D003812 BLACK C_J91A11B5. 1C. 2380 V 32E1818018 A-00002059 Power Code. CB-00000544 Cables: 32F2818004 32F2818004 14 Black. (AJ0E3H1C1F/2F) 4 Linetek. Yi-Ching Special Printing. No Bag A-00002058 Power Cord CCC.W1F/2 76-D004095 Ching Special Printing.2 mm. L=1800+/-50mm. JCE 17 32-D003899 32-D003899 FFC-OSD.K. 45 CB-00004034 32-D000557 32-D000557 15 Pins.2 DC-00004037 (AJ0E3H1A. UL. I Sheng B-00004022 Board Assembly: PCBA for . VSC_VA912-3 23 ) Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 ViewSonic Corporation 48 Confidential-Do Not Copy VA912/b-3 .C.E. 32E1818013 32E1818013 PC-323+COC-01.W2F 77-D004087 mm. 4L. Injex 10 ) 40-D003818 Rear Assy. H05VV-F. 4.C.K.07 B-00004023 PCBA for .75mm2. 1800 mm.C. A190E3.K.K. (AJ0E3H1A1F/2F) 22 A190E3-H0F 77-D004087 Safety Label for . 300/500V. A190E3-H0F. L=1830+/-50mm. A190E3. 3C. Lips Without Audio. A150X2.C. 18AWG. I2 (AJ0E3H1K1F/2F) SHENG.9 1 mA. P/N Item ECR/ECN ViewSonic P/N Location Universal number# Adapter. Linetek.75mm2. 32E1818018 (AJ0E3H1E1F/2F) 3G. A190E3-T-K.E.E. No Bag 32-D001922 Power Cord.175x0. no AL foil Monitor Cable. 301-72. C-00004026 (AJ0E3H1A. A190E3-H0F. Recommend Spare Parts List (RSPL) RECOMMENDED SPARE PARTS LIST (VA912-3) ViewSonic Model Number: VS10931-1W Rev: 1a Serial No. 20 mmx20 77-D004154 18 mm. 0. A190E3-H0F. H05VV-F.W2F 40-D003818 11 ) 40-D003821 Seat Assy. 5 V/3 A. Injex 9 ) 40-D003812 Cover Hinge. A190E3-H0F.E.3). A150X2. TennRich CB-00004035 77-D004154 DC-00004036 Documentation: Carton Label for . 76. 75¢J . (AJ0E3H1A1F/2F) 3 Linetek. DAC-19M001 A-00004021 Accessories: 27-D003115 27-D003115 BF. (AJ0E3H1K1F/2F) 5 18AWG. 3C. Black.5 A.K. 32E1818060 32E1818060 LP-60L+LS-60. BLACK C.E. A190E3-H-S1.W2F 40-D003821 Precision Industry 12 ) 40-D003820 Stand Assy. 180cm. 35-D002998 35-D002998 8 Rev.K.75mm2. Bar-Code Labe. Hontech C-00004030 (AJ0E3H1A. BSMI. Injex C-00004028 (AJ0E3H1A.C.E. Black. A190E3-H0F 21 F) MENU for VSC_VA912-3+Caution Card. A190E3-H0F. Prefix: PUQ Description Ref. CEE. VSC_VA912-3 77-D004123 Carton Label for . 0. A190E3-H0F.C. Chang Huang. C-00004032 (AJ0E3H1A. A190E3-H0F. 22 Pins. Paper. 55*13mm DC-00002073 76-D004095 MENU for VSC_VA912-3. 303-02. BLACK C. YiDC-00004039 (AJ0E3H1C. 0. No Bag Power Code. VSC(VA912-3) 19 ) 20 7741519181 7741519181 Label. 18AWG. CB-00000547 32F3018003 32F3018003 16 Black. SILVER C-00004025 (AJ0E3H1A. PSB Mark.K. LPA-00000458 32E1818015 32E1818015 30B+LS-13.E.50x45x62xCx(5/5)x(0. Chang Huang. 180cm. DC-00004040 76-D004134 76-D004134 Paper.E. Black. Ver:00 A. A190E3-H0F. 120 mmx50 DC-00004041 (AJ0E3H1A.31 40-D003819 Bezel Assy.W2F 40-D003819 PANTONE 877C. No Bag A-00002057 Power Cord. 19 V/2. VCTF 3G 0. Black. Black. JCE FFC_X. L=1830+/-50mm.7. 18AWG. L=1830+/-50mm. ABS PA-757N. 18AWG. Chang Huang.75mm^2 CNS CTA-00004047 32-D001922 6 (AJ0E3H1W1F/2F) 08. 30AWG. 1C.W2F 77-D004123 mmx76. 35-D004062 35-D004062 7 Rev. A190E3-H0F. 530 mmx140 mmx50 mm.5*2 HW-00000553 Screw. L=8 mm. f 5. M4. A190E3-H0F. M4. Hwa Chang. plate Ni. Security Tape. M3*P1. P=0.8 Tape. Round Head. Phillips Cross Recess. VSC Carton. N/A. 456x290x38mm. Hwa Chang. SHYE CHING SCREW.13. OPP. White. VSC_VA912-3 Cushion. Screw_with_Washer. SHYE CHING SCREW SCREW. M3*P0. P=0. L=15 mm.045mm. Special HW-00002442 Thin Head. N/A.5*2 HW-00000556 SCREW.7 mm. head D8 Stand-Off 4 #-40*11.C. PE_LD. 530 mmx140 mmx50 mm.W2F 78-D004088 ) 78-D003913 78-D003913 P-00004045 1 31 P-00004046 78-D003911 P-00000594 P-00000595 7841935111 7841919921 78-D003911 7841935111 7841919921 1 1 1 32 33 34 ViewSonic Corporation 49 Confidential-Do Not Copy VA912/b-3 . white HW-00004042 Ref. L900xW50x0.K. Chen Ti Paper.27*12. Phillips Cross Recess. f 5. 570*600*0. Protector. White.5*4.7 mm. Screw_with_Washer. A190E1-H01 PE Foam Bag. PE_Foam(TOP) Inner Box.E. P/N 42A9930008 42A9990005 42-D000314 Location Universal number# 42A9930008 42A9990005 42-D000314 Q'ty 2000 2000 2000 26 42-D000649 M-00000559 M-00000560 P-00004043 42A9940007 7345511002 42-D000649 42A9940007 2000 2000 1 1 27 28 Miscellaneous: 29 Packing Material: 30 7345511002 78-D004088 (AJ0E3H1A. PE_Foam(BOTTOM) Cushion. 536 mmx148 mmx475 mm. A190E3-H0F. A190E1-H01. PE_LD.Item 24 Hardware: 25 Description ECR/ECN ViewSonic P/N Screw. 18AWG. CT-12. VSC(VA912b-3) (AJ0E3H1A. 19 V/2. M3*P1. Screw_with_Washer.K.5 A. 301-72. Prefix: PUR Description Ref.27*12.W1F) D003808 Gray_H93828B5. OPP.K. Security Tape. 0. L=15 mm. Protector. 300/500V. Midnight C-00004027 10 (AJ0E3H1A. SHYE 42-D000314 42-D000314 CHING SCREW 25 SCREW.K. 3C.9 mA. A150X2. L=1830+/-50mm.C. Black. 22 Pins. Hontech C-00004031 12 (AJ0E3H1A. 45 Pins. Midnight Gray. A190E3-T-K. 1800 mm. N/A. A190E3. N/A. DAC-19M001 BF. TennRich CB-00004035 Carton Label for . Special Thin Head. JCE CB-00000544 32F2818004 32F2818004 14 Cables: CB-00004034 FFC_X. No Bag (AJ0E3H1K1F/2F) 2 Power Code. Ver:00 A-00004021 Accessories: 27-D003115 27-D003115 A. 0.W1F) D004094 Huang. Rev. LP-30B+LS-13. Paper. L=8 mm. 18AWG.W1F) D004092 29 Cushion. A-00000458 32E1818015 32E181801 L=1830+/-50mm. PE_LD. A190E3-H-S1.W1F) D003816 Precision Industry Audio Cable. A190E3-H0F. Midnight Gray. No Bag 32-D001922 32A-00004047 Power Cord.E.C. Chen P-00004044 78-D004092 78Packing Material: Ti Paper. HW-00002442 Phillips Cross Recess. M4. A190E3-H0F (AJ0E3H1A1F/2F) D004134 21 77-D004094 77Safety Label for . 1C.75mm2.K. 5 V/3 A. 120 mmx50 mm. BSI.K. 4. 303-02. Black. Yi-Ching Special DC-00004039 76(AJ0E3H1C.7 mm. 76.75mm2. M3*P0. 75¢J .E. 530 mmx140 P-00004046 78-D003911 78-D003911 31 mmx50 mm. 18AWG.C. A150X2. A190E3-H0F. YiDC-00004040 76-D004134 76Ching Special Printing.2 mm.3). H05VV-F.5*4.K. 2380 V 1 Power Code. PE_LD. 4L.2 mmx76. (AJ0E3H1E1F/2F) 8 Black.W1F) D003817 40-D003815 40Seat Assy. JCE CB-00000547 32F3018003 32F3018003 16 32-D003899 17 32-D003899 FFC-OSD. 456x290x38mm.W1F/2F Printing.E.C.75mm2. Injex C-00004024 Cabinets: 9 (AJ0E3H1A.E. Chang DC-00004048 22 (AJ0E3H1A. 180cm. Bar-Code Labe. (AJ0E3H1C1F/2F) 3 4 Power Cord.W1F) D004122 18 7741519181 19 7741519181 Label. White. plate Ni.W1F) D003815 Precision Industry 40-D003816 40Stand Assy. Lips Without Audio. 55*13mm DC-00002073 76-D004095 MENU for VSC_VA912-3. UL. 180cm.175x0. P/N Location Universal number# Item ECR/ECN ViewSonic P/N Adapter. PSB Mark. Round Head.C. I-SHENG. H05VV-F.13. A190E1-H01. PCA-00002058 32E1818013 32E181801 323+COC-01.31 B-00004023 40-D003822 40Bezel Assy. A190E3-H0F.C. VSC_VA912b-3 42A9930008 23 Hardware: 42A9930008 Screw. Paper. Injex 40-D003817 40Rear Assy. SVT#18/3C.E. f 5.75mm^2 CNS CT-08. 570*600*0.5*2 HW-00000553 42A9990005 24 42A9990005 Screw. A190E3-H0F. Black. Black. No Bag (AJ0E3H1A1F/2F) 5 3 Power Cord CCC. 30AWG.E. VCTF 3G 0.7 mm. A190E3-H0F. Hwa Chang. 1C. Black. VSC M-00000560 7345511002 7345511002 28 Miscellaneous: Carton. Screw_with_Washer. f 5. I Sheng 35-D004062 PCBA for . 3G. Black. A190E3-H0F. Rev. P=0. 6 (AJ0E3H1W1F/2F) D001922 BSMI. M4. A190E1-H01 P-00000594 7841935111 7841935111 32 PE Foam Bag.K. Midnight Gray.K. Hontech C-00004033 13 (AJ0E3H1A. (AJ0E3H1K1F/2F) 0 5 Linetek. Midnight Gray. 536 mmx148 mmx475 mm. A190E3. P=0. SP-023+IS-14.045mm. A190E3-H0F. 530 mmx140 P-00004045 78-D003913 78-D003913 mmx50 mm. CEE. A190E3-H0F. Hwa Chang. 18AWG.W1F) D003822 40-D003808 40Cover Hinge.5*2 HW-00000556 SCREW. Phillips HW-00004042 42-D000649 42-D000649 Cross Recess. 0. DC-00004038 Documentation: 77-D004122 77Chang Huang. A190E3-H0F. Linetek. SHYE 26 CHING SCREW. P-00000595 7841919921 7841919921 33 white Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2000 2000 2000 2000 2000 1 1 1 1 1 1 ViewSonic Corporation 50 Confidential-Do Not Copy VA912/b-3 . A190E3-H0F D004095 20 ) MENU for VSC_VA912-3+Caution Card. PE_Foam(TOP) Inner Box. L900xW50x0.E. White.07 B-00004022 35-D004062 7 Board Assembly: 35-D002998 8 35-D002998 PCBA for .8 M-00000559 Tape. L=1830+/-50mm. PE_Foam(BOTTOM) 30 Cushion. A190E3-H0F. 3C. L=1800+/-50mm. A-00002059 32E1818018 32E181801 0.K.C.C.50x45x62xCx(5/5)x(0. VSC_VA912b-3 (AJ0E3H1A. head D8 42A9940007 27 42A9940007 Stand-Off 4 #-40*11.E. Injex C-00004029 11 (AJ0E3H1A.RECOMMENDED SPARE PARTS LIST (VA912b-3) ViewSonic Model Number: VS10931-1W Rev: 1a Serial No. no 32-D000557 32-D000557 15 AL foil Monitor Cable. ABS PA-757N.E. LP-60L+LSA-00002057 32E1818060 32E181806 60. 18AWG. Linetek. JCE common Monitor Cable.52x304.RoHS Audio Cable.215.215.A2F) PJ0EACS000(C1F.5mmX100M.Black.RoHS Olympic.Accessory BOM.27*12 Screw.assy FFC.19".A190E3.L=15 mm.A190E3.VCTF 3G 0.9 mA.M4.Ver:00 A.European / Korea 2 pin.147 mmx137 mmx0.301-03.RoHS Olympic.Optimax LPTHL56-T12SU Driver IC.polyester film.RoHS Olympic.Accessory BOM.Rev.TORAY/-9187L.Scan.A190E3.A190E3-H-S1.Data.08 mm PCBA for .A190E3-H0F.M4.¥Õ¦â.03 Silicone.A190E3-T-K.BLACK C PCBA for .E2F) PJ0EAKU000(K1F.45 Pins Cover AD Assy.85x0.256Channel Driver IC.19".30AWG.07 Location common common common common common common common common common common Q'ty 1 1 1 1 1 10 0. P/N 1 #N/A MJ0E501K01 2 #N/A L3J005XXXX 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A CB-00004034 #N/A HW-00000556 HW-00000553 HW-00004042 #N/A #N/A A-00004021 C-00004030 B-00004023 CB-00004035 HW-00002442 M-00000559 #N/A #N/A B-00004022 7414119023 7414119024 36-D001339 36X8002971 7344191017 73-D002676 73-C000047 35-D002646 7349951002 PJ0EFH0Q06 44-D003904 41-D002813 32-D000557 41-D000546 42A9990005 42A9930008 42-D000649 41-D000632 73-D004702 27-D003115 40-D003821 35-D002998 32-D003899 42-D000314 42A9940007 73-D001960 73-D002812 35-D004062 Description 19" Semi Product.100000 mmx1.D-sub+Audio.D-sub+Audio.00398 0.18AWG.COF.P=0.00398 1 0.Round Head.HX8633CPD400.100M/RL ACF.3).330g Olympic.Optimax LPTHL56-T12AGA1SU TFT Polarizer M190E5.AC-4251FY-16.Power built-in.301-72.7 mm.P=0.K2F) PJ0EAW5000(W1F.22 Pins SCREW.Black.A190E3.A190E3-H.DAC-19M001 BF.2F 1 1 1 1 ViewSonic Corporation 51 Confidential-Do Not Copy VA912/b-3 .Two power cords of UK & EU for VSC.black.Rev.Phillips Cross Recess.A150X2.Power built-in.Black.4 1 1 1 2 1 15 1 1 1 1 1 1 1 4 4 2 2 1 common common common common common common common common common common common common common 31 32 33 34 #N/A CB-00000544 CB-00000547 #N/A PJ0EAAS000(A1F.180cm.15x307.1 mm Lips Without Audio.Screw_with_Washer PCBA Cover Assy.BSMI.1800 mm W1F.AC-9825R-35.4L.China 3 pin.A150X2.19".A190E3 Metal Frame Front Assy.W2F) 32F2818004 32F3018003 32-D001922 Olympic.Power built-in. Backlight Unit.Default 19"E5 TN PS Asahi 0.L=8 mm.Accessory BOM.Accessory BOM.D-sub+Audio.Morning Star.50x45x62xCx(5/5)x(0.PCB.Black.0.5 mmx0.1 mm Spacer.13x0.A190E3.380.Power built-in.RoHS Olympic.Black.384Channel ACF.A190E3.135°.5 V/3 A.100000 mmx1.D-sub+DVI+Audio.COG.A190E3-H-X.ASSY Screw.Black.Black.303-02.AC-8405Z-23 1.JCE common Power Cord.tape.ASSY Isolated Tape.Taiwan 3 pin.75mm^2 CNS CT-08.BLACK.308 mmx2 mmx0.2380 V Seat Assy.PET.Special Thin Head Stand-Off 4 #-40*11.C2F) PJ0EAET000(E1F.plate Ni.135°.5 mm PCBA for .Accessory BOM.19".BOM LIST (VA912/b-3) ViewSonic Model Number: VS10931-1W Rev: 1a Item ViewSonic P/N Ref.Power built-in.Black.A190E3-H&M190E5L01.180cm.Function BOM.D-sub+Audio.383.379 mmx2.5*4 SCREW.USA 3 pin.19 V/2.8 Spacer.7mm glass CF Polarizer M190E5.00398 0.M3*P1.D-sub+Audio.31 FFC.4.Rev.19E5-L01.HX8002CB97.175x0.A170E1.7 mm.COF.5 A.5 mm ACF.None.19".M3*P0. K.E.A190E3.Black.021 1 1 ViewSonic Corporation 52 Confidential-Do Not Copy VA912/b-3 .USA.VSC.K.ID BOM.13.VSC.Protector. Olympic.China.Checksum(xxxx).Item ViewSonic P/N Ref.ID BOM.W2F 1 1 1 1 1 40 #N/A 10-D003929 common 1 41 #N/A 10-D003930 common 1 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 #N/A P-00002378 #N/A DC-00004041 #N/A #N/A #N/A DC-00004036 P-00004045 P-00004046 #N/A P-00004043 #N/A #N/A #N/A #N/A DC-00004039 #N/A 10-D003931 73-D001222 7345511002 77-D004087 77-D004093 7741519181 7741513161 77-D004154 78-D003913 78-D003911 7841935111 78-D004088 7841919921 7841595111 7841995111 78-D001493 76-D004095 79-D003912 common common common A.A190E3.D-sub+DVI+Audio.A190E1-H01 Pallet.Silver Black.K.530 mmx140 mmx50 mm Inner Box.Silver Black.A190E3-H0F.A190E3.White.E.PE_LD. Olympic.456x290x38mm.19".UK.VSC. P/N Description Olympic.VSC.ViewSonic.A190E3-H0F.021 1 1 1 1 1 1 0. A190E1-H01 Carton.ID BOM.ID BOM.USA.Checksum(x x). Olympic. Bezel Assy.Ver.C.Black.Paper.D-sub+DVI+Audio.D-sub+DVI+Audio.NRVSCxxxxA00.E.Security Tape. Olympic.PE_LD.OPP.D-sub+DVI+Audio.A190E3-H0F SN Label for .1C.VSC.E.A190E3.A190E3.white Corner Protector Separator.K.Checksum(xx).SILVER PANTONE 877C Rear Assy.Black.Anal og Port Software (EDID_DVI).China.TWN. Olympic.A190E3-H0F Label.W2F A.A190E3-H0F.C.UK.A190E3.W2F A.ID BOM.ID BOM.A190E3.VSC.A190E3-H0F.K.530 mmx140 mmx50 mm Cushion.K.A190E3.L900xW50x0. Olympic.W2F common common common common C.European.045mm.Silver Black.mylar Tape.021 0.A190E2-H06.ID BOM.D-sub+DVI+Audio.D-sub+DVI+Audio.W2F A.A190E3.A190E3-H0F.1150 mmx920 mmx135 mm MENU for VSC_VA912-3.A190E3.W2F common 1 1 0.E.VSC.A190E3-H0F.White.C.Pallet Barcode Label Carton Label for .D-sub+DVI+Audio.Dual+Audio Panel Protector Film.VSC.ViewSonic. Olympic.C.C.Bar-Code Labe Label.A190E3.Silver Black.A170E1-H01.A190E1-H01.Ver.Black.E.A190E3-H0F PE Foam Bag.E.A190E3.Ver.A190E3-H0F.ID BOM.570*600*0.DVI Port Software (BIOS).Wooden.A190E3-H0F Shipping Package Information for .ViewSonic.ABS PA-757N Software (EDID_DSUB). Olympic.K.BLACK C Cover Hinge.W2F A.C.058 1 1 1 0.Silver Black. RSDS.A190E3-H0F Cushion.VSC Location Q'ty 35 36 37 38 39 #N/A C-00004025 C-00004028 C-00004032 C-00004026 PJ0EI1F300(A1F) PJ0EI2F300(A2F) PJ0EI1F303(C1F) PJ0EI2F303(C2F) PJ0EI1F301(E1F) PJ0EI2F301(E2F) PJ0EI1F302(K1F) PJ0EI2F302(K2F) PJ0EI1F304(W1F) PJ0EI2F304(W2F) 40-D003819 40-D003818 40-D003820 40-D003812 A.083 0.W2F common common common common common common A.VSC.ID BOM.E.ID BOM.K.D-sub+DVI+Audio.1130x955x11.BLACK C Stand Assy.Dsub+DVI+Audio.D-sub+DVI+Audio.NR19E3HS3000.NRVSCxxxxD00.VSC Safety Label for .Black.TWN. Olympic.European.VSC. Exploded Diagram and Exploded Parts List ViewSonic Corporation Model Title Date Rev: ViewSonic Corporation 53 Confidential .Do Not Copy VA912/b-3 .8. BLACK C 1 REAR 1 SUPPORT PLATE 1 SCREW T3*8L 1 RUBBER CAP 4 Screw.P=0.5*10L 4 VSC BIRDLOGO 1 VSC NAME PLATE 1 MYLAR PCBX 1 MYLAR LIGHT LEAKAGE 1 Rear Assy.EXPLODED PARTS LIST (VA912/b-3) ViewSonic Model Number: VS10931-1W Rev: 1a Item ViewSonic P/N Ref.7 mm.A190E3-H0F.M4.BLACK C 1 SCREW. 2 Stand Assy. A190E3-H0F 1 Seat Assy.A190E3-H0F.M3*P1.A190E3-H0F. P/N 1 #N/A PJ0EFH0Q06 2 C-00004025 40-D003819 2-1 #N/A 40-D003809 2-2 #N/A 40-D003811 2-3 #N/A 40-D003805 2-4 #N/A 33-D000377 2-5 #N/A 42-D001524 2-6 #N/A 77-D000226 2-7 #N/A 77-D000224 3 #N/A 73-D004605 4 #N/A 73-D005094 5 C-00004028 40-D003818 5-1 #N/A 40-D003813 5-2 #N/A 41-D003804 5-3 HW-00000557 42A9930017 5-4 #N/A 40-D000227 6 HW-00000556 42A9990005 7 C-00004032 40-D003820 8 HW-00002442 42-D000314 9 C-00004026 40-D003812 10 C-00004030 40-D003821 10-1 #N/A 40-D003801 10-2 #N/A 40A1769201 Description Q'ty ISM_A190E3_HAT 1 Bezel Assy.BLACK C 1 SEAT 1 RUBBER FOOT 6 ViewSonic Corporation 54 Confidential-Do Not Copy VA912/b-3 .SILVER PANTONE 877C 1 BEZEL 1 LENS 1 KEYPAD 1 SPEAKER 4 ohm 2W 2 SCREW T2.27*12.A190E3-H0F.L=15 mm 4 COVER HINGE . Block Diagram OSD Key Pad / Audio Out Speaker Audio In 3.9.Do Not Copy VA912/b-3 .3V DVI-D Digital Video D-sub Analog Video DC/DC Main Board Signal LCD Module DC-5V DC-19V AC Power LIPS Backlight ViewSonic Corporation 55 Confidential . 10....14] VCM V33C INVERTER I/F V33C V5 V5A VAA V18C B9 VCM V33P V18C V33P V5A POWER INV_ON/OFF INV_ADJ INV_ADJ V33C ViewSonic Corporation Model Title Date Rev: TOP ViewSonic Corporation 56 Confidential .14] V33P GMA[1. Schematic Diagrams B1 B10 PANEL_INTERFACE B2 V5A VGA VGA_5V DDC_CLK DDC_DAT DDC_CLK DDC_DAT V5A_ESD V5A_ESD B3 RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC OR0N OR0P OR1N OR1P OR2N OR2P OR0N OR0P OR1N OR1P OR2N OR2P OR0N OR0P OR1N OR1P OR2N OR2P OG0N OG0P OG1N OG1P OG2N OG2P V5A_ESD DVI V5A R+ RG+ GB+ BCLK+ CLK- R+ RG+ GB+ BCLK+ CLK- OG0N OG0P OG1N OG1P OG2N OG2P OG0N OG0P OG1N OG1P OG2N OG2P R+ RG+ GB+ BCLK+ CLK- OB0N OB0P OB1N OB1P OB2N OB2P OCLKP OCLKN OB0N OB0P OB1N OB1P OB2N OB2P OB0N OB0P OB1N OB1P OB2N OB2P OCLKP OCLKN V5A OCLKP OCLKN B4 B7 OSD V5A LED_OR LED_GR SOURCE_SELECT MENU KEY_DOWN KEY_UP AUTO_ADJ PWR_SW V5A AUDIO_ON LED_OR LED_GR SOURCE_SELECT MENU KEY_DOWN KEY_UP AUTO_ADJ PWR_SW AUDIO_ON OPTION1 OPTION1 OPTION2 INV_ON/OFF DCDC_ON/OFF PANEL_ON/OFF VCM_PWM XAO OPTION2 VOL1 DDC_CLK VGA_5V DDC_DAT OPTION1 OPTION2 MCU LED_OR LED_GR SOURCE_SELECT CSZ MENU SCL KEY_DOWN SDA KEY_UP HWRESET AUTO_ADJ INT PWR_SW AD0 V5A AUDIO_ON AD3 INV_ON/OFF AD1 AD2 DCDC_ON/OFF PANEL_ON/OFF VCM_PWM XAO ER0N ER0P ER1N ER1P ER2N ER2P CSZ SCL SDA HWRESET INT AD0 AD3 AD1 AD2 ER0N ER0P ER1N ER1P ER2N ER2P ER0N ER0P ER1N ER1P ER2N ER2P SCALER CSZ SCL SDA HWRESET INT AD0 AD3 AD1 AD2 EG0N EG0P EG1N EG1P EG2N EG2P EG0N EG0P EG1N EG1P EG2N EG2P EG0N EG0P EG1N EG1P EG2N EG2P EB0N EB0P EB1N EB1P EB2N EB2P ECLKP ECLKN EB0N EB0P EB1N EB1P EB2N EB2P VOL1 B5 INV_ADJ VOL1 ECLKP ECLKN EB0N EB0P EB1N EB1P EB2N EB2P ECLKP ECLKN ESTH OSTH DCDC_ON/OFF VGH ESTH OSTH ESTH OSTH VGH VGL VGL VAA DC/DC V18C V33C VAA V5 V5A B6 STB POL STV CKV OE GVON GVOFF STB POL STV CKV OE GVON GVOFF XAO STB POL STV CKV OE GVON GVOFF VGH VGL VAA VCM PANEL_ON/OFF GMA[1.Do Not Copy VA912/b-3 .14] VCM_PWM GMA[1. Do Not Copy VA912/b-3 .V5A V5A1 V5A 1 TP VAA VAA VAA1 1 TP VGH VGH1 VGH 1 TP VGL VGL1 VGL 1 TP DCDC_ON/OFF D34 2 CP36 3 QP18 RP16 1 RP14 2 1 RP15 CP28 RP20 CP3 CP15 3 CP11 1 CP25 1 3 2 D3 VGL ZDP6 CP6 CP4 CP2 3 CP9 1 GND_POWER RP19 GND_POWER 3 2 GND_POWER QP17 1 2 RP12 VAA CP1 RP31 V5 V5A FP1 LP3 V5 GND_POWER 1 2 + CP17 GND_POWER 1 DP1 2 2 QP13 2 D2 3 CP14 VAA RP48 LP4 CP16 CP13 1 RP49 LP5 LP6 RP8 3 RP7 QP2 1 GND_POWER GND_POWER GND_POWER 2 [INV_GND] V5A GND_POWER V5A CP10 GND_POWER RP11 RP32 2 1 CP18 GND_POWER 4 3 2 1 3 RP3 UP1 OUT BR/CTL SCP QP4 DCDC_ON/OFF 1 2 VCC IN- GND OSC 7 GND_POWER 5 6 8 FB (High --> Enable) RP1 RP6 GND_POWER RP37 CP21 CP19 CP20 GND_POWER CP37 GND_POWER GND_POWER 3 2 4 1 CE UP2 OUT VCC SCP RR1 GND OSC 5 6 FB 7 8 IN- CP38 RP50 CP39 RP52 RP53 RP51 CP40 RP54 ViewSonic Corporation Model Title Date Rev: GND_POWER GND_POWER DC/DC ViewSonic Corporation 57 Confidential . Do Not Copy VA912/b-3 .V5A_ESD CON1 V5A_ESD R G B RGB GND HSYNC VSYNC SYNC GND DDC SCL DDC SDA +5V HPD 25 26 27 29 28 8 15 6 7 14 16 R7 R5 R6 V5A V5A D7 1 1/3shield 2/4shield 0/5shield clk shield DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT5+ DAT5clk+ clk- 11 3 19 22 2 18 17 10 9 2 1 13 12 5 4 21 20 23 24 2 D4 D5 D8 2 U2 3 2 C163 R9 R10 1 2 3 4 NC NC NC GND VCC VCLK SCL SDA 8 7 6 5 1 1 1 R11 R12 GND_POWER GND_POWER R13 R14 R15 R16 R17 R18 R19 GND_POWER D9 D10 D11 D12 R20 3 3 3 3 3 1 1 1 1 1 3 3 3 D13 D14 D15 D16 R+ RG+ GB+ BCLK+ CLK- 1 1 1 V5A R213 V5A_ESD C31 C32 C33 C34 C35 C36 C37 C38 2 2 2 2 2 D17 C39 GND_POWER GND_POWER 2 2 2 ViewSonic Corporation Model Title Date Rev: DVI INTERFACE ViewSonic Corporation 58 Confidential . Do Not Copy VA912/b-3 .CN2 1 2 3 4 5 6 7 8 V5 GND_INV R198 V33C R199 3 C162 Q19 R200 1 INV_ON/OFF 2 GND_POWER V33C R195 R196 V33C 3 C30 Q18 1 R197 INV_ADJ 2 GND_POWER ViewSonic Corporation Model Title Date Rev: INVERTER I/F ViewSonic Corporation 59 Confidential . 5 DA12/P6.6 AD0/P6.2 DA3/P5.1 STOUT/P4.0/RX HSDA/P3. NC NC VSS 5 6 GND_POWER V5A GND_POWER 3 2 L8 GND_POWER 1 R42 OPTION1 OPTION2 INV_ON/OFF AUDIO_ON R193 XAO VCM_PWM V5A LED MENU KEY_DOWN KEY_UP SOURCE_SELECT AUTO_ADJ PWR_SW LED_GR LED_OR GND_POWER 10/20 V5A R43 R45 V5A R44 U4 R46 8 7 DCDC_ON/OFF Q6 VCC WP SCL SDA A0 1 C48 V5A C49 R50 A1 R49 3 2 1 2 SCL1 SDA1 R51 R47 R48 6 5 A2 GND 3 4 GND_POWER R52 Q7 1 C50 PANEL_ON/OFF (PANEL POWER CONTROL) VCPU CN8 3 GND_POWER 2 GND_POWER DDC_DAT DDC_CLK 1 2 3 4 GND_POWER ViewSonic Corporation Model Title Date Rev: MCU ViewSonic Corporation 60 Confidential .1 AD2/P6.2 P1.Do Not Copy VA912/b-3 .6 P1.5 P1.5/T1 VBLANK/P4.3 P1.4/T0 ISCL/P3.6 DA13/P6.4 DA11/P6.3 DA4/P5.5 DA6/P5.2/HLFHI AD3/P6.4 DA5/P5.0 DA1/P5.0 AD1/P6.4 P1.0 P1.1 DA2/P5.3 DA10/P6.GND_POWER VCPU C171 R218 R22 C172 SDA 03/08/04 R139 R140 R219 SCL 2 ZDP7 C43 C41 C40 R23 CSZ HWRESET C42 U3 Y2 R24 8 4 GND_POWER VDD3 VDD 11 D18 1 X2 1 R25 2 C45 12 GND_POWER X1 7 R26 R27 RST HSCL/P3.1/TX P3.1 P1.0 HBLANK/P4.2/INT0 ISDA/P3.2 HSYNC VSYNC DA7/HCLAMP HLFHO/DA8 HALFV/DA9 P1.7 3 2 1 42 41 40 34 27 26 16 9 30 31 32 33 5V_ON/OFF V5A 1 V5A R32 R30 R31 V5A 3 R33 Q2 R34 GND_POWER R36 1 2 5V_ON/OFF R35 GND_POWER R37 GND_POWER Q3 MTV312M 10 Avoid entering the self-test mode of the MCU.7 17 18 20 21 22 23 24 25 C44 AD0 AD1 AD2 AD3 R28 R29 GND_POWER VCPU 2 D19 1 2 3 Q1 VGA_5V GND_POWER DDC_CLK DDC_DAT INT SDA1 SCL1 C46 C47 29 28 19 13 14 V5A LED 36 37 15 43 44 35 39 38 DA0/P5. Do Not Copy VA912/b-3 .V5A V5A 5 6 7 8 5 6 7 8 R53 RP46 RP47 R54 4 3 2 1 4 3 2 1 CN3 LP11 MENU KEY_DOWN KEY_UP SOURCE_SELECT AUTO_ADJ LED_G LED_O PWR_SW AUDIO_ON VOL1 OPTION1 OPTION2 V5A 5 6 7 8 5 LP9 6 7 8 5 6 7 8 LP10 4 3 2 1 4 3 2 1 4 3 2 1 R179 CP33 CP34 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 AUD_R Q14 5 6 7 8 5 6 7 8 1 2 Q15 4 3 2 1 4 3 2 1 AUD_L 3 3 R181 LED_OR 1 2 LED_O GND_POWER V5A R214 R215 R182 AUD_L R216 AUD_R1 Q16 1 2 Q17 L20 L22 L21 R217 1 1 AUD_L1 3 L24 LED_GR 1 3 R184 L23 LED_G 2 J1 AUD_G1 1 C167 C168 C169 C170 AUD_R GND_AUD GND_AUD GND_AUD ViewSonic Corporation Model Title Date Rev: OSD INTERFACE ViewSonic Corporation 61 Confidential . V33B L9 (3-STEP) VSD XAO OE CKV CN4 V33P XAO OE CKV STV VGD PANEL_VGL VGH_P C51 2 R55 3 Q8 PANEL_VGH STV GND_POWER L10 PANEL_VGH VGD VGD R57 R56 R58 VCOM C52 GVON GND_POWER GVON GND_POWER OSTH OSTH Q9 ZD1 A_G B_D A_S L11 OB2P OB2N OB1P OB1N OB0P OB0N 1 OB2P OB2N OB1P OB1N OB0P OB0N POL STB VGH VGH VGH_P GND_POWER POL STB OCLKN OCLKP C53 C54 GVOFF GVOFF OCLKN OCLKP R59 GND_POWER GND_POWER L12 OG2P OG2N OG1P OG1N OG0P OG0N OR2P OR2N OR1P OR1N OR0P OR0N OG2P OG2N OG1P OG1N OG0P OG0N OR2P OR2N OR1P OR1N OR0P OR0N VGL VGL C55 PANEL_VGL C56 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 1 VSD1 VSD 1 VSA1 VSA 1 6 5 4 2 VCOM1 B_G A_D B_S VCOM 1 VGD1 VGD 1 1 2 3 P_VGH1 PANEL_VGH 1 P_VGL1 PANEL_VGL 1 STB1 STB 1 POL1 GND_POWER GND_POWER POL 1 ESTH1 ESTH L13 1 VCM VCM C57 C60 C61 VCOM CN5 OSTH1 OSTH 1 C58 C59 VSD VCOM ESTH EB2P EB2N EB1P EB1N EB0P EB0N GND_POWER L14 VAA VAA C63 C62 VSA ESTH EB2P EB2N EB1P EB1N EB0P EB0N C64 ECLKN ECLKP GMA1 GMA2 GMA3 GMA4 GMA5 GMA6 GMA7 ECLKN ECLKP GND_POWER GMA1 GMA2 GMA3 GMA4 GMA5 GMA6 GMA7 VSA GMA8 GMA9 GMA10 GMA11 GMA12 GMA13 GMA14 GMA8 GMA9 GMA10 GMA11 GMA12 GMA13 GMA14 EG2P EG2N EG1P EG1N EG0P EG0N ER2P ER2N ER1P ER1N ER0P ER0N U5 4 NC VSS 3 EG2P EG2N EG1P EG1N EG0P EG0N GND_POWER VDD 5 CD OUT 2 1 1 V33B R60 2 XAO XAO ER2P ER2N ER1P ER1N ER0P ER0N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 STV1 STV 1 CKV1 CKV 1 OE1 OE 1 GVON1 GVON 1 GVOFF1 GVOFF 1 GND_POWER ViewSonic Corporation Model Title Date Rev: PANEL I/F ViewSonic Corporation 62 Confidential .Do Not Copy VA912/b-3 . Do Not Copy VA912/b-3 .VPREF1 VPREF 1 R61 VS1 R64 GMA1 1 GMA1 V5A V33A1 TP R65 GMA1 V33A 1 L15 U6 GMA2 2 R67 GMA2 C70 GND VS2 R66 V5A 3 Vin Vout 1 V33A (PANEL VCC) GMA2 1 C71 C72 C73 VS3 R70 GMA3 1 GMA3 R71 R72 GMA3 GND_POWER VS4 GMA4 1 V33C1 TP L16 GMA4 U8 1 R73 GMA4 3 R74 VS5 1 GMA5 GND VIN GMA5 VOUT VOUT 2 4 V33C V33C (SCALER VCC) C80 R201 R202 GMA5 1 C78 C79 C81 VS6 1 GMA6 GMA6 R203 GMA6 GND_POWER R204 VS7 1 R75 GMA7 GMA7 GMA7 V18V1 R76 R79 PP11 PP12 VPREF 1 R80 VCN L17 D20 1 D21 2 U10 1 TP 1 2 3 R81 VCN1 GND VIN VOUT VOUT 2 4 V18C V18C (SCALER Core VCC) C93 C94 C91 C92 GND_POWER R82 VS8 R83 GMA8 1 GMA8 GMA8 R86 VS9 R87 R88 GMA9 1 GMA9 GND_POWER GMA9 VS10 1 GMA10 GMA10 GMA10 R89 R90 VS11 1 R91 GMA11 GMA11 GMA11 V33A 1 (Panel VCC) 2 3 Q10 V33P R92 VS12 1 GMA12 GMA12 GMA12 R97 R93 1 R96 C100 3 R205 C103 VS13 1 GMA13 GMA13 GMA13 C104 R98 QP19 C105 C106 R207 VS14 R208 GMA14 1 GMA14 GMA14 2 R206 PANEL_ON/OFF 1 GND_POWER GND_POWER VCM1 VOP1 1 V5A U13 U12 C107 VOP 1 3 L18 GND R99 8 GND 9.99V VOUT VOUT 2 4 VIN VOUT VOUT 2 4 R101 C109 VPREF VCM R102 R103 VOP R100 8 U14B GND_POWER VCM R104 1 VSCM R106 3 2 1 VAA VAA VOP 3 VIN VPREF + - U14A 1 C108 VSCN 5 6 + - VSCM_ADJ R107 7 R105 VSCN_OUT C113 C114 VCN 4 C111 R108 GND_POWER C115 4 C110 C112 3 GND_POWER Q11 GND_POWER GND_POWER 2 VCM_PWM VCM_PWM 1 GND_POWER GND_POWER GND_POWER GND_POWER GND_POWER ViewSonic Corporation Model Title Date Rev: POWER ViewSonic Corporation 63 Confidential . Do Not Copy VA912/b-3 .VAD VPLLVDVI VDPLL VPO VDD 11 21 84 94 104 114 126 VDDP VDDP VDDP VDDP VDDP VDDP VDDP 55 65 U1 AVDD AVDD AVDD_DVI AVDD_DVI 53 AVDD_MPLL AVDD_PLL VDDC VDDC VDDC VDDC 18 87 97 117 45 51 35 RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC 63 62 60 59 61 58 57 37 38 RIN0 RIN0M GIN0 GIN0M SOGIN0 BIN0 BIN0M HSYNC0 VSYNC0 NC NC RA1P RA1N RA2P RA2N RA3P RA3N GA1P GA1N GA2P GA2N GA3P GA3N 106 107 108 109 110 111 112 113 98 99 100 101 102 103 88 89 90 91 92 93 118 119 OR2P OR2N OR1P OR1N OR0P OR0N OR2P OR2N OR1P OR1N OR0P OR0N V33C VAD OG2P OG2N OG1P OG1N OG0P OG0N R+ RG+ GB+ BCLK+ CLKVDVI R+ RG+ GB+ BCLK+ CLKR1 C6 40 41 43 44 46 47 49 50 52 66 OG2P OG2N OG1P OG1N OG0P OG0N L1 C3 C1 C2 R+ RG+ GB+ BCK+ CKREXT REFP REFM BA1P BA1N BA2P BA2N BA3P BA3N CLKAP CLKAN OB2P OB2N OB1P OB1N OB0P OB0N OCLKP OCLKN OB2P OB2N OB1P OB1N OB0P OB0N OCLKP OCLKN GND_POWER C11 67 RB1P RB1N RB2P RB2N RB3P RB3N NC GB1P GB1N GB2P GB2N GB3P GB3N NC NC BB1P BB1N BB2P BB2N BB3P BB3N CLKBP CLKBN ESP OSP 16 17 22 23 24 25 7 8 9 12 13 14 15 122 123 124 125 128 1 4 5 120 121 75 76 ER2P ER2N ER1P ER1N ER0P ER0N ER2P ER2N ER1P ER1N ER0P ER0N V33C VPLL L2 C4 C5 CSZ SCL SDA HWRESET INT AD0 AD3 AD1 AD2 CSZ 69 SCL 71 SDA 70 HWRESET 32 INT 72 AD0 30 AD3 31 AD1 77 AD2 78 ALE/CSZ RDZ/SCL WRZ/SDA HWRESETZ INT AD0/GPO6 AD3/GPO5 AD1/EINV AD2/OINV EG2P EG2N EG1P EG1N EG0P EG0N EG2P EG2N EG1P EG1N EG0P EG0N GND_POWER INV_ADJ 73 74 C22 PWM0 PWM1 XIN EB2P EB2N EB1P EB1N EB0P EB0N ECLKP ECLKN ESTH OSTH EB2P EB2N EB1P EB1N EB0P EB0N ECLKP ECLKN V33C L3 VDVI D1 C7 C8 C9 C10 33 Y1 C23 ESTH OSTH R185 POL 34 C24 XOUT GND_POWER 3 2 6 R2 AVSS AVSS AVSS AVSS_MPLL BYPASS AVSS_LPLL BUSTYPE AVSS_PLL AVSS_DVI AVSS_DVI AVSS_DVI GPO0 GPO1 GPO2 GPO3 GPO4 DDC1_DAT/GPO7 DDC1_CLK/GPO8 83 82 81 80 79 28 29 GVON1 STB STV CKV OE POL1 GVOFF R186 GND_POWER GVON STB STV CKV OE GVOFF R187 R188 GVON POL V33C L4 GND_POWER R3 GNDP GNDP GNDP GNDP GNDP GNDP GNDP GNDC GNDC GNDC GNDC VDPLL 39 42 48 56 64 68 36 10 20 85 95 105 115 127 19 86 96 116 54 V5A VOL_ADJ1 V33C C12 C13 1 R209 V5A 3 Q20 R138 GND_POWER GND_POWER VOL1 V5A C164 1 1 2 GND_POWER R210 R212 VOL1 + C165 R211 C166 V33C L5 VPO V33C C14 C15 C16 C17 C18 C19 C20 C21 GND_POWER GND_POWER V18C L6 VDD V18C C25 C26 C27 C28 C29 ViewSonic Corporation GND_POWER Model Title Date SCALER Rev: ViewSonic Corporation 64 Confidential . Do Not Copy VA912/b-3 . R125 2 R124 D32 R126 HSYNC C126 1 GND_POWER GND_POWER GND_POWER R128 VSI R127 2 D33 VSYNC R129 C127 1 HSYNC1 TP 1 HSYNC GND_POWER VSYNC1 TP 1 VSYNC CLK_DDC R130 GND_POWER GND_POWER DDC_CLK R131 VGA_5V DAT_DDC VGA_5V DDC_DAT (0603/100) 2 D27 V5A L19 2 2 D28 D29 R133 V5A C128 03/08/04 C129 D30 VGA_5V 03/08/04 2 1 2 R134 D31 R135 12/15/2003 1 1 1 1 U15 R136 GND_POWER R137 1 2 3 4 GND_POWER NC NC NC GND VCC VCLK SCL SDA 8 7 6 5 3 VGA_5V GND_POWER GND_POWER ViewSonic Corporation Model Title Date Rev: VGA ViewSonic Corporation 65 Confidential .R109 11 DDC_DAT 12 13 14 15 CN7 1 6 2 7 3 8 4 9 5 10 R110 R111 R113 R115 C116 RIN GIN R112 C117 R114 C119 C118 BIN SOG R116 R117 R118 C120 R119 C121 C122 R120 C123 GND_POWER R121 R123 GNDR C124 GNDG 3 C125 D22 D23 1 D24 3 1 D25 1 D26 3 R122 GNDB 12/15/2003 DDC_CLK V5A_ESD GND_POWER 2 2 2 V5A_ESD C159 GND_POWER C157 C158 GND_POWER Most of Customers Recommended. Do Not Copy VA912/b-3 .11. PCB Layout Diagrams ViewSonic Corporation 66 Confidential . Do you have any other opinions or suggestions regarding this service manual? Reader’ basic dada: s Name: Company: Add: Tel: E.mail: Fax: Title: After completing this form. The form and listing C. Circuit Description 5. Assessment A. Specification 3. Block Diagrams 10. Adjustment Procedure 6. Service Manual Content 2. Recommended Spare Parts List 8. Quality Systems & Processes (marc.PCB Layout Diagrams Excellent Good Fair Bad B. Are you satisfied with this Service Manual? Item Excellent Good Fair Bad 1.com) ViewSonic Corporation 67 Confidential-Do Not Copy VA912/b-3 . Precautions and Safety Notices 2. What do you think about the content of this Service Manual? Unit 1. which allows continuous improvement of our products. for return to ViewSonic Corporation. Schematic Diagrams 11.* Reader’ Response* s Dear Readers: Thank you in advance for your feedback on our Service Manual. Front Panel Function Control Description 4. You may also e-mail any suggestions to the Director. We would appreciate your completion of the Assessment Matrix below. please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. Exploded Diagram and Exploded Parts List 9.maupin@viewsonic. Service Manual Layout 3. Troubleshooting Flow Chart 7.
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