Download ViewSonic VA912b-1 Service manual
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Service Manual ViewSonic 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 1a SM Editing Date ECR Number 10/12/05 Description of Changes Initial Release ViewSonic Corporation Editor G. Han Confidential-Do Not Copy VA912/b-3 I 1. Precautions and Safety Notices 1 2. Specification 5 3. Front Panel Function Control Description 10 4. Circuit Description 16 5. Adjustment Procedure 18 6. Troubleshooting Flow Chart 42 7. Recommended Spare Parts List 48 8. Exploded Diagram and Exploded Parts List 53 9. Block Diagram 55 10. Schematic Diagrams 56 11. PCB Layout Diagrams 69 ViewSonic Corporation Confidential-Do Not Copy VA912/b-3 II 1. Precautions and Safety Notices 1. Appropriate Operation (1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the LCD panel surface. (3) Use a soft cloth soaked with mild detergent to clean the display housing. (4) Use only a high quality, safety approved AC/DC power cord. (5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time. (6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off. (7) Do not touch the LCD panel surface with sharp or hard objects. (8) Do not place heavy objects on the LCD display, video cable, or power cord. (9) Do not use abrasive cleaners, waxes or solvents for your cleaning. (10) Do not operate the product under the following conditions: - Extremely hot, cold or humid environment. - Areas containing excessive dust and dirt. - Near any appliance generating a strong magnetic field. - In direct sunlight. 2. Caution No modification of any circuit should be attempted. Service work should only be performed after you are thoroughly familiar with all of the following safety checks and servicing guidelines. 3. Safety Check Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit, the voltage is exposed in such areas as the associated transformer circuits. 4. LCD Module Handling Precautions 4.1 Handling Precautions (1) Since front polarizer is easily damaged, pay attention not to scratch it. (2) Be sure to turn off power supply when connecting or disconnecting input connector. (3) Wipe off water drops immediately. Long contact with water may cause discoloration or spots. (4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth. (5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface. (6) Since CMOS LSI is used in this module, take care of static electricity and ensure human earth when handling. (7) Do not open or modify the Module Assembly. (8) Do not press the reflector sheet at the back of the module in any direction. (9) In the event that a Module must be put back into the packing container slot after it was taken out of the container, do not press the center of the CCFL Reflector edge. Instead, press at the far ends of the CFL Reflector edge softly. Otherwise the TFT Module may be damaged. (10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate or tilt the Interface Connector of the TFT Module. (11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or ViewSonic Corporation 1 Confidential-Do Not Copy VA912/b-3 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. (13) The LCD module contains a small amount of materials having no flammability grade. 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. (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. ViewSonic Corporation 2 Confidential-Do Not Copy VA912/b-3 Correct methods : Incorrect Methods : Only touch the metal-frame of the panel or the front cover Surface of the panel is pressed by fingers & this may of the monitor. cause “ MURA “ Do not touch the surface of the polarizer . Take out the monitor with cushion Take out the monitor by grasping the LCD panel. That may cause “ MURA“. ViewSonic Corporation 3 Confidential-Do Not Copy VA912/b-3 Correct Methods : Incorrect Methods : Place the monitor on a clean & soft foam pad . Place the monitor on foreign objects . That could scratch the surface of panel ViewSonic Corporation 4 Confidential-Do Not Copy VA912/b-3 2. Specification 2-1General Specifications Test Resolution & Frequency 1280x1024 @ 60Hz Test Image Size Full Size Factory Default: Contrast and Brightness Controls Contrast = 70%, Brightness = 100% 2.2 VIDEO INTERFACE Analog Input Connector DB-15 (Analog), refer the appendix A Digital Input Connector DVI-D 24pin, refer the appendix B Default Input Connector Defaults to the first detected input Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes Video Cable Connector DB-15 Pin out Compliant DDC 2B Video Signals 1. Video RGB (Analog) 2. DVI (Digital) Separate Video Impedance 75 Ohms (Analog) Maximum PC Video Signal 950 mV with no damage to monitor Maximum Mac Video Signal 1250 mV with no damage to monitor Sync Signals TTL DDC 2B Compliant with Revision 1.3 Sync Compatibility Separate Sync Shall be compatible with all PC type computers, Video Compatibility Macintosh computers, and after market video cards 640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x 624, 1024 x 768, 1152 x 870, 1280 x 720, 1280 x 960, 1280 x 1024 Resolution Compatibility * The image vertical size might not be full screen. But the image vertical position should be at the center. Exclusions ViewSonic Corporation Not compatible with interlaced video 5 Confidential-Do Not Copy VA912/b-3 2-3 POWER SUPPLY Power Supply (Adapter) Part Number: 27-D003115 Input Voltage Range 100 TO 240 VAC Input Frequency Range 50 TO 60 HERTZ Short Circuit Protection Output can be shorted without damage Over Current Protection 3.3~4.5 A typical at 5 VDC Leakage Current 3.5 mA (Max) at 254VAC / 60Hz EFFICIENCY 80 % typical at 115 VAC Full Load Fuse Internal and not user replaceable Power Dissipation 58 (Max) Watt Max Input AC Current 1.8 A rms @ 100 VAC, INRUSH CURRENT (COLD START) 120A(max) @ 240VAC , 50Hz Shall start and function properly when under full load, Power Supply Cold Start with all combinations of input voltage, input frequency, 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 ± 2.3KV Power Supply Line Surge Immunity (L-PE) with no damage Shall be able to function properly, without reset or visible Power Supply Missing Cycle Immunity screen artifacts, 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. Audible shall defined Power Supply Acoustics to be in compliance with ISO 7779 (DIN EN27779:1991) Noise measurements of machines acoustics. Power Switch noise shall not be considered Separate 3-prong NEMA 5-15P type plug. Length = US Type Power Cable 1.8m. Connects to display. Color = Black Schuko CEE7-7 type plug. European Type Power Cable Length = 1.8m, Connects to display. Color = Black Separate 3-prong type plug. CCC Type Power Cable Length = 1.8m. Connects to display. Color = Black Power Saving Operation(Method) VESA DPMS Signaling Power Consumption ON Mode < 58 W (max) ViewSonic Corporation 6 Confidential-Do Not Copy VA912/b-3 ACTIVE OFF < 2 W Recovery Time 2-4 ON MODE = N/A, ACTIVE OFF < 3 SEC ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency 30 – 82 KHZ Vertical Refresh Rate 50 – 85* HZ. Maximum Pixel Clock 135 MHz (EDID file is 140MHz) Sync Polarity Independent of sync polarity. 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 4 640 x 480 @ 60Hz, 31.5kHz Yes Yes 5 640 x 480 @ 67Hz, 35.0kHz Yes Yes 6 640 x 480 @ 72Hz, 37.9kHz Yes Yes 7 640 x 480 @ 75Hz, 37.5kHz Yes Yes 8 640 x 480 @ 85Hz, 43.27kHz Yes Yes 9 720 x 400 @ 70Hz, 31.5kHz Yes Yes 10 800 x 600 @ 56Hz, 35.1kHz Yes Yes 11 800 x 600 @ 60Hz, 37.9kHz Yes Yes 12 800 x 600 @ 75Hz, 46.9kHz Yes Yes 13 800 x 600 @ 72Hz, 48.1kHz Yes Yes 14 800 x 600 @ 85Hz, 53.7kHz Yes Yes 15 832 x 624 @ 75Hz, 49.7kHz Yes Yes 16 1024 x 768 @ 60Hz, 48.4kHz Yes Yes 17 1024 x 768 @ 70Hz, 56.5kHz Yes Yes 18 1024 x 768 @ 72Hz, 58.1kHz Yes Yes 19 1024 x 768 @ 75Hz, 60.0kHz Yes Yes 20 1024 x 768 @ 85Hz, 68.67kHz Yes Yes 21 1152 x 870 @ 75Hz, 68.7kHz Yes Yes 22 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes 23 1280 x 1024 @ 75Hz, 79.97kHz Yes No 24 1280x 720 @ 60Hz, 45kHz (HDTV) Yes Yes Note 1:When Vertical frequency at 85Hz or resolution, the vertical image size might not be full screen. But the ViewSonic Corporation 7 Confidential-Do Not Copy VA912/b-3 vertical image position should be at the center. Note2: *: The vertical image size might not be full screen. 2-5 AUDIO INTERFACE (SPEAKER SPECIFICATION) Line input connection 3.5 mm stereo jack Line input signal 1.0Vrms@1kHz Line input impedance 10k ohm Maximum power output (Electric) 2W Signal to Noise Ratio 72db Frequency response F0 -20kHz (F0 : Lowest resonant freq.) Distortion <8% THD @1kHz There should be no audible vibration with volume at Vibration 100%. (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 Lime Green pantone # 577C Cable type / length 3.5mm stereo cable / 1.8m length Note: There is no guarantee <1 W power Audio DPMS consumption in Active Off mode, when the Audio Cable is connected 2-6 TFT LCD PANEL Panel Source Identify (1) ID label - The panel code “B” for CMO panel should be shown on the lower right side of ID label. (See Figure 2) (2) UPC label - The panel code “B” for CMO panel should be shown on the lower right side of UPC label. (See Figure 3) ViewSonic Corporation 8 Confidential-Do Not Copy VA912/b-3 Panel Characteristics: Model number A190E3 Type TN type with RSDS interface Active Size 376.32 (H) x 301.056 (V) Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0.294 mm GLASS TREATMENT Anti Glare (Hard coating 3H) # OF BACKLIGHTS 4 CCFL (L type); Edge Light BLU BACKLIGHT LIFE 50,000 Hours (min) Luminance (Center) – 280 cd/m2 (Typ after 15 minute warm up) Condition: 180 cd/m2 (M in after 15 minute warm up) CT = 6500K, Contrast = Max, Brightness = Max U = 76% (typ), 67% (M in). Brightness Uniformity (13 Points) U = Min Luminance in 13 points / Ma x Luminance in 13 points Contrast Ratio 450 (typ), 250 (min) Color Depth 16 million colors (6 bit + 2 bit FRC) @ CR>10 Viewing Angle (Horizontal) Typical: Minimum: @ CR>5 150 130 @ CR>10 VIEWING ANGLE (VERTICAL) Typical: Typical: Minimum: 130 Typical: TBD Minimum: TBD Response Time 8ms (Tr= 2 ms, Tf = 6 ms) (typ) 10% -90% @ Ta=25°C 18 ms (Tr= 7 ms, Tf = 11 ms) (max) Panel Defects Please see Panel Quality Specifications. 9 TBD @ CR>5 Minimum: 110 ViewSonic Corporation TBD Confidential-Do Not Copy VA912/b-3 3. 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. The OSD controls are explained at the top of the next page and are defined in “Main Menu Controls” on page 10. Main Menu with OSD 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. Displays the Main Menu or exits the control screen and saves adjustments. Displays the control screen for the highlighted control. Also toggles between two controls on some screens. Also a shortcut to toggle analog and digital connection. Power light Green = ON Orange = Power Saving Audio Mute button turns the sound off Standby Power On/Off ViewSonic Corporation 10 Confidential - Do Not Copy VA912/b-3 Do the following to adjust the display setting: 1. To display the Main Menu, press button [1]. NOTE: All OSD 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 to adjust, pressSorTto scroll up or down in the Main Menu. 3. After the desired control is selected, press button [2]. A control screen like the one shown below appears. The command line at the bottom of the control screen tells what to do next from this screen. You can toggle between control screens, adjust the selected option, or exit the screen. 4. To adjust the setting, press the up S or down T buttons. 5. To save the adjustments and exit the menu, press button [1] twice. 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. (Look for instructions on “changing the refresh rate” in the graphics card's user guide.) • If necessary, make small adjustments using H. POSITION and V. POSITION until the screen image is completely visible. (The black border around the edge of the screen should barely touch the illuminated “active area” of the LCD display.) ViewSonic Corporation 11 Confidential-Do Not Copy VA912/b-3 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. Input Select toggles between inputs if you have more than one computer connected to the VA912/VA912b. Audio Adjust Volume increases the volume, decreases the volume, and mutes the audio. Mute temporarily silences audio output. Color Adjust provides several color adjustment modes, including preset color temperatures and a User Color mode which allows independent adjustment of red (R), green (G), and blue (B). The factory setting for this product is 6500K (6500 Kelvin). 9300K-Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting). 6500K-Adds red to the screen image for warmer white and richer red. 5400K-Adds green to the screen image for a darker color. ViewSonic Corporation 12 Confidential - Do Not Copy VA912/b-3 Control Explanation 5000K-Adds blue and green to the screen image for a darker color. User Color Individual adjustments for red (R), green (G), and blue (B). 1. To select color (R, G or B) press button [2]. 2. To adjust selected color, pressSandT. Important: If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode, colors return to the 6500K factory preset. Information displays the timing mode (video signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic® website URL. See your graphics card’s 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. Size (Horizontal Size) adjusts the width of the screen image. H./V. Position (Horizontal/Vertical Position) moves the screen image left or right and up or down. ViewSonic Corporation 13 Confidential-Do Not Copy VA912/b-3 Control Explanation Fine Tune sharpens the focus by aligning text and/or graphics with pixel boundaries. NOTE: Try Auto Image Adjust first. Sharpness adjusts the clarity and focus of the screen image. Setup Menu displays the menu shown below: Language Select allows the user to choose the language used in the menus and control screens. Resolution Notice allows the user 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 the user to move the OSD menus and control screens. OSD Timeout sets the length of time the OSD screen is displayed. For example, with a “30 second” setting, if a control is not pushed within 30 seconds, the display screen disappears. ViewSonic Corporation 14 Confidential - Do Not Copy VA912/b-3 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 5. Adjusting Procedure A. Function Test and Alignment Procedure 5.1 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. 5.2 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. Press the ‘Auto’ button on monitor keypad to Auto Adjust. C. The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive seconds, during which time you will notice the image change. 5.3 Firmware Test Patten : Burn in Model (Refer to Chap3. Hot Keys for Function Control) -Make sure the F/W is the latest version. 5.4 DCC Test Patten: EDID program -Make sure it can pass test program. 5.5 Window Shut Down Test Signal: 1280*1024@60Hz Test Pattern: Checkered Pattern Every One Pixel (50%Green & 50%Blue) Inspection Item: Flicker, Mura 5.6 Window BG Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Line Defect, Function Defect & Mura ViewSonic Corporation 18 Confidential-Do Not Copy VA912/b-3 5.7 25 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 25% White (Gray) Inspection Item: Particle, Line Defect & Mura 5.8 50 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 50% White (Gray) Inspection Item: Bright Dot, Particle, Line Defect & Mura 5.9 White Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Particle, Line Defect, Power, Image Remain & Mura 5.10 Black Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Bright Dot, Line Defect & Power ViewSonic Corporation 19 Confidential-Do Not Copy VA912/b-3 5.11 RED Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Red Inspection Item: Bright Dot, Partial & Line Defect 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,From 0 to 100% White) Inspection Item: Line Defect & Function Defect ViewSonic Corporation 20 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,From 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 5.17 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 5-18. Function Test Display pattern Item Pattern 1 Gray_Scale_0-100_V Description Remark Vertical 64 (256) Gray Scale (右→左,From 0 to Figure 1 100% White) Horizontal 64 (256) Gray Scale (上→下,From 0 2 Gray_Scale_0-100_H Figure 2 to 100% White) 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 FIGURE 1 FIGURE 2 Figure 3 ViewSonic Corporation Figure 4 22 Confidential-Do Not Copy VA912/b-3 Figure 5 FIGURE 5 FIGURE 6 FIGURE 7 ViewSonic Corporation FIGURE 8 23 Confidential-Do Not Copy VA912/b-3 B. BIOS update procedure BIOS Update User Guide BIOS U FLOW FOR GENESIS 1.1 Program: 1. 1. 1. Software a. Please download the file “ M-Star” from CMO E-Sir system. There are ISP & BIOS two files, kindly see as below. a) ISPACK.EXE: Main program b) Ancillary .ISPACK.EXE :Description program 1.1. 2.Hardwar Point plug •D_Sub cable (15Pin) •Point plug [24Pin] D_Sub cable OR Without to affect 1.1.3 Join VGA Cable, PC BASE, see the example picture as below. ViewSonic Corporation 24 Confidential-Do Not Copy VA912/b-3 1.2 Installation: A. Please install the programs respectively as below. B. ISP & BIOS software file to be about to produce the next. (If the file existence already, needn’t to set up. C. repeat.) This system is applied to Win 95/98/NT/2000. Isp.lnk 1.3 ISP Execution 1. Settings: Double Click Isp.lnk Fig.1: ISP Tool Main Menu ViewSonic Corporation 25 Confidential-Do Not Copy VA912/b-3 2. When ISP Tool executing at the first time, it is required to enter Security Data Please press , then input related information as Fig.2. 4C 7C 4C 77 For A190E3 Key in “OK” 3. Select correct Micro Controller as Fig.3. Step 2 Load MCU File Step 1 Select MTV312M64 ViewSonic Corporation 26 Confidential-Do Not Copy VA912/b-3 4. Installation software, Select want download correct file Step 3 Example : The path of software Step 4 Press RUN ViewSonic Corporation 27 Confidential-Do Not Copy VA912/b-3 1.4.Verification BIOS Update whether success 5. When everything is done. Please turn off the power and restart it again. Check Factory Mode and make sure it already be updated. ViewSonic Corporation 28 Confidential-Do Not Copy VA912/b-3 C. Monitor Assembly and Disassembly 1. Separate Stand Assy 1.1 Remove Stand Cover Step 1 : Press Stand Assy’s bottom part in Seat Hinge. Step 2 : Remove Cover Hinge. Step 3 : Loose and Remove 4 screws. Step 4: Remove Stand Assy. Step 5: Completed ViewSonic Corporation 29 Confidential-Do Not Copy VA912/b-3 2. Separate Rear Cover (Rear Case Assy) Loosen and remove 5 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. Step 3 : Remove Rear Cover. Step 4 : Completed ViewSonic Corporation 30 Confidential-Do Not Copy VA912/b-3 3. Remove Power Board 3.1 Remove 2 pieces of Backlight wires. 3.2 Remove Metal Cover Step 1 : Loose and remove 4 screws. Step 2 : Loose and remove 2 screws. Step 3 : Loose and remove 4 screws. ViewSonic Corporation 31 Confidential-Do Not Copy VA912/b-3 Step 4 : Remove the Cover of X-PCB. Step 5 : Completed 3.3 Remove Power PCBA Step 1 : Insert 2 pieces of Backlight wires. Step 2 : Loose and remove 4 screws. ViewSonic Corporation 32 Confidential-Do Not Copy VA912/b-3 Step 3 : Remove Power PCBA. Step 4 : Completed ViewSonic Corporation 33 Confidential-Do Not Copy VA912/b-3 4. Change New Power Board Step 1 : Insert New Power PCBA. Step 2 : Fasten 4 fixed screws of Power PCBA . Step 3 : Completed 5. Remove AD PCBA 5.1 Remove FFC Step 1 : Remove 2 FFC from AD PCBA. ViewSonic Corporation 34 Confidential-Do Not Copy VA912/b-3 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 Step 3 : Completed 6. Change New AD PCBA Step 1 : Place New AD PCBA. Step 2 : Fasten 4 screw. Step 3 : Insert FFC. ViewSonic Corporation 36 Confidential-Do Not Copy VA912/b-3 Step 4 : Insert 2 FFC. Step 5 : Completed 7 Remove OSD PCBA Step 1 : Remove FFC. Step 2 : Separate both Audio Cable. Step 3 : Take OSD PCBA apart. ViewSonic Corporation 37 Confidential-Do Not Copy VA912/b-3 Step 4 : Completed. 8. Change New OSD PCBA Step 1 : Place New OSD PCBA. Step 2 : Insert Audit Cable to connectors of OSD PCBA. Step 3 : Completed. ViewSonic Corporation 38 Confidential-Do Not Copy VA912/b-3 9. Add Cover to AD PCB Heatsink Step 1 : Join the cover hooks of X-PCB. Step 2 : Fasten the 4 screws. Step 3 : Fasten 2 screws. Step 4 : Fasten the 4 screws. Step 5 : Completed ViewSonic Corporation 39 Confidential-Do Not Copy VA912/b-3 10. Rear Assy Assembly Step 1 : Place Rear Cover. Step 2 : Join Rear Cover with Bezel. Step 3 : Fasten 2 screws. Step 4 : Completed ViewSonic Corporation 40 Confidential-Do Not Copy VA912/b-3 11. Stand Assy Assembly Step 1 : Place Stand Assy . Step 5 : Fasten 4 screws to fixed Stand Assy. Step 6 : Insert Cover Hinge. Step 7 : Place Stand Assy. ViewSonic Corporation 41 Confidential-Do Not Copy VA912/b-3 6. Trouble Shooting Flow Chart Defect Mode Failure Analysis Light On Test Repair Testing ※ Panel Change” Should be Performed to Level 3 Repair stage Missing Line Abnormal Display Check PCB AD/B Change Check Panel Panel Change Check Panel Panel Change 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 Panel Change Check Wire D-sub cable change Noise Check PCB AD/B Change Check Panel Panel Change N Next Step A ViewSonic Corporation TEST Completed 42 Confidential-Do Not Copy VA912/b-3 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.B display Check Panel Panel Change Check PCB AD/B Change Check Panel Panel Change Check PCB AD/B Change abnormal CNT/B Change Check Panel Check Wire Display Shut Check PCB Down Panel Change D-sub cable change AD/B Change P/B Change No signal Check Panel Panel Change Check PCB AD/B Change CNT/B Change Check Wire Power on Display abnormal D-sub cable change Check PCB AD/B Change Check Panel Panel Change 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 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 TEST Next Step 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 Can’t Input Check PCB &OSD AD/B Change CNT/B Change 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 Next Step P/B Change NG TEST Completed ViewSonic Corporation 45 Confidential-Do Not Copy VA912/b-3 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 u Make sure power button is ON. u Check whether the LCD monitor and computer power cords are plugged and whether there is a supply of power. l No Signal Input u l Check the signal connection between the computer and LCD monitor. “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 Fuzzy Image u l Image too bright u l l l l Adjust brightness and contrast by OSD. Image too dark u l Adjust Phase. Adjust brightness and contrast by OSD. Irregular image u Check the signal connection between the computer and LCD monitor. u Perform Auto Adjust. Distorted image u Reset the LCD monitor u Take off e xtra accessories (such as signal extension cord). Image is not centered u Use OSD Image Menu to adjust H_Position and V_Position. u Check image size setting. u Perform Auto Adjust. Size is not appropriate ViewSonic Corporation 46 Confidential-Do Not Copy VA912/b-3 l u Use OSD Image Menu to adjust H_Position and V_Position. u Check image size setting. u Perform Auto Adjust. u Use OSD Color Menu to adjust color setting. Color too dark u l Dark area distorted u l Use OSD Color Menu to adjust color setting. Use OSD Color Menu to adjust color setting. White color is not white u Use OSD Color Menu to adjust color setting. ViewSonic Corporation 47 Confidential-Do Not Copy VA912/b-3 7. Recommend Spare Parts List (RSPL) RECOMMENDED SPARE PARTS LIST (VA912-3) ViewSonic Model Number: VS10931-1W Rev: 1a Serial No. Prefix: PUQ Description Ref. P/N Item ECR/ECN ViewSonic P/N Location Universal number# Adapter, Lips Without Audio, DAC-19M001 A-00004021 Accessories: 27-D003115 27-D003115 BF, Ver:00 A, 19 V/2.5 A, 5 V/3 A, 4L, 4.9 1 mA, 2380 V 32E1818018 A-00002059 Power Code, CEE, SP-023+IS-14, H05VV-F, 32E1818018 (AJ0E3H1E1F/2F) 3G, 0.75mm2, CT-12, L=1800+/-50mm, I2 (AJ0E3H1K1F/2F) SHENG, 18AWG, Black, No Bag Power Code, UL, SVT#18/3C, 75℃, LPA-00000458 32E1818015 32E1818015 30B+LS-13, L=1830+/-50mm, Black, (AJ0E3H1A1F/2F) 3 Linetek, 18AWG, No Bag A-00002058 Power Cord CCC, 300/500V, 0.75mm2, 3C, 32E1818013 32E1818013 PC-323+COC-01, L=1830+/-50mm, Black, (AJ0E3H1C1F/2F) 4 Linetek, 18AWG, No Bag A-00002057 Power Cord, BSI, H05VV-F, 0.75mm2, 3C, 32E1818060 32E1818060 LP-60L+LS-60, L=1830+/-50mm, Black, (AJ0E3H1K1F/2F) 5 18AWG, PSB Mark, Linetek, No Bag 32-D001922 Power Cord, VCTF 3G 0.75mm^2 CNS CTA-00004047 32-D001922 6 (AJ0E3H1W1F/2F) 08, Black, BSMI, 1800 mm, I Sheng B-00004022 Board Assembly: PCBA for , A190E3, A190E3-H-S1, 301-72, 35-D004062 35-D004062 7 Rev.07 B-00004023 PCBA for , A190E3, A190E3-T-K, 303-02, 35-D002998 35-D002998 8 Rev.31 40-D003819 Bezel Assy, A190E3-H0F, SILVER C-00004025 (AJ0E3H1A.C.E.K.W2F 40-D003819 PANTONE 877C, Injex 9 ) 40-D003812 Cover Hinge, A190E3-H0F, ABS PA-757N, C-00004026 (AJ0E3H1A.C.E.K.W2F 40-D003812 BLACK C_J91A11B5, Injex 10 ) 40-D003818 Rear Assy, A190E3-H0F, BLACK C, Injex C-00004028 (AJ0E3H1A.C.E.K.W2F 40-D003818 11 ) 40-D003821 Seat Assy, A190E3-H0F, BLACK C, Hontech C-00004030 (AJ0E3H1A.C.E.K.W2F 40-D003821 Precision Industry 12 ) 40-D003820 Stand Assy, A190E3-H0F, BLACK C, C-00004032 (AJ0E3H1A.C.E.K.W2F 40-D003820 Hontech Precision Industry 13 ) Audio Cable, A150X2, 18AWG, 180cm, CB-00000544 Cables: 32F2818004 32F2818004 14 Black, JCE FFC_X, 0.50x45x62xCx(5/5)x(0.175x0.3), 45 CB-00004034 32-D000557 32-D000557 15 Pins, no AL foil Monitor Cable, A150X2, 30AWG, 180cm, CB-00000547 32F3018003 32F3018003 16 Black, JCE 17 32-D003899 32-D003899 FFC-OSD, 22 Pins, TennRich CB-00004035 77-D004154 DC-00004036 Documentation: Carton Label for , A190E3-H0F, 20 mmx20 77-D004154 18 mm, Chang Huang, VSC_VA912-3 77-D004123 Carton Label for , A190E3-H0F, 76.2 DC-00004037 (AJ0E3H1A.C.E.K.W2F 77-D004123 mmx76.2 mm, Chang Huang, VSC(VA912-3) 19 ) 20 7741519181 7741519181 Label, Bar-Code Labe, 55*13mm DC-00002073 76-D004095 MENU for VSC_VA912-3, Paper, 1C, YiDC-00004039 (AJ0E3H1C.E.K.W1F/2 76-D004095 Ching Special Printing, A190E3-H0F 21 F) MENU for VSC_VA912-3+Caution Card, DC-00004040 76-D004134 76-D004134 Paper, 1C, Yi-Ching Special Printing, (AJ0E3H1A1F/2F) 22 A190E3-H0F 77-D004087 Safety Label for , A190E3-H0F, 120 mmx50 DC-00004041 (AJ0E3H1A.C.E.K.W2F 77-D004087 mm, Chang Huang, VSC_VA912-3 23 ) ViewSonic Corporation 48 Confidential-Do Not Copy VA912/b-3 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 Item 24 Hardware: 25 Description ECR/ECN ViewSonic P/N Screw, M3*P0.5*4, f 5.5*2 HW-00000553 Screw, M3*P1.27*12, f 5.5*2 HW-00000556 SCREW, M4, P=0.7 mm, L=15 mm, Special HW-00002442 Thin Head, Phillips Cross Recess, Screw_with_Washer, SHYE CHING SCREW Ref. P/N 42A9930008 42A9990005 Location Universal number# 42A9930008 42A9990005 Q'ty 2000 2000 42-D000314 42-D000314 2000 42-D000649 42-D000649 2000 42A9940007 42A9940007 2000 7345511002 7345511002 1 78-D004088 (AJ0E3H1A.C.E.K.W2F 78-D004088 ) 1 26 27 28 Miscellaneous: 29 Packing Material: SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips Cross Recess, plate Ni, Screw_with_Washer, SHYE CHING SCREW, head D8 Stand-Off 4 #-40*11.8 Tape, Security Tape, OPP, L900xW50x0.045mm, VSC Carton, A190E3-H0F, 536 mmx148 mmx475 mm, Chen Ti Paper, VSC_VA912-3 HW-00004042 M-00000559 M-00000560 P-00004043 30 31 32 33 34 P-00004045 Cushion, A190E3-H0F, PE_LD, White, 530 mmx140 mmx50 mm, N/A, Hwa Chang, PE_Foam(BOTTOM) Cushion, A190E3-H0F, PE_LD, White, 530 mmx140 mmx50 mm, N/A, Hwa Chang, PE_Foam(TOP) Inner Box, 456x290x38mm, A190E1-H01 PE Foam Bag, Protector, 570*600*0.13, A190E1-H01, white ViewSonic Corporation 78-D003913 78-D003913 1 78-D003911 78-D003911 1 7841935111 7841935111 1 7841919921 7841919921 1 P-00004046 P-00000594 P-00000595 49 Confidential-Do Not Copy VA912/b-3 RECOMMENDED SPARE PARTS LIST (VA912b-3) ViewSonic Model Number: VS10931-1W Rev: 1a Serial No. Prefix: PUR Description Ref. P/N Location Universal number# Item ECR/ECN ViewSonic P/N Adapter, Lips Without Audio, DAC-19M001 BF, Ver:00 A-00004021 Accessories: 27-D003115 27-D003115 A, 19 V/2.5 A, 5 V/3 A, 4L, 4.9 mA, 2380 V 1 Power Code, CEE, SP-023+IS-14, H05VV-F, 3G, A-00002059 32E1818018 32E181801 0.75mm2, CT-12, L=1800+/-50mm, I-SHENG, 18AWG, (AJ0E3H1E1F/2F) 8 Black, No Bag (AJ0E3H1K1F/2F) 2 Power Code, UL, SVT#18/3C, 75℃, LP-30B+LS-13, A-00000458 32E1818015 32E181801 L=1830+/-50mm, Black, Linetek, 18AWG, No Bag (AJ0E3H1A1F/2F) 5 3 Power Cord CCC, 300/500V, 0.75mm2, 3C, PCA-00002058 32E1818013 32E181801 323+COC-01, L=1830+/-50mm, Black, Linetek, 18AWG, (AJ0E3H1C1F/2F) 3 4 Power Cord, BSI, H05VV-F, 0.75mm2, 3C, LP-60L+LSA-00002057 32E1818060 32E181806 60, L=1830+/-50mm, Black, 18AWG, PSB Mark, (AJ0E3H1K1F/2F) 0 5 Linetek, No Bag 32-D001922 32A-00004047 Power Cord, VCTF 3G 0.75mm^2 CNS CT-08, Black, 6 (AJ0E3H1W1F/2F) D001922 BSMI, 1800 mm, I Sheng 35-D004062 PCBA for , A190E3, A190E3-H-S1, 301-72, Rev.07 B-00004022 35-D004062 7 Board Assembly: 35-D002998 8 35-D002998 PCBA for , A190E3, A190E3-T-K, 303-02, Rev.31 B-00004023 40-D003822 40Bezel Assy, A190E3-H0F, Midnight Gray, Injex C-00004024 Cabinets: 9 (AJ0E3H1A.C.E.K.W1F) D003822 40-D003808 40Cover Hinge, A190E3-H0F, ABS PA-757N, Midnight C-00004027 10 (AJ0E3H1A.C.E.K.W1F) D003808 Gray_H93828B5, Injex 40-D003817 40Rear Assy, A190E3-H0F, Midnight Gray, Injex C-00004029 11 (AJ0E3H1A.C.E.K.W1F) D003817 40-D003815 40Seat Assy, A190E3-H0F, Midnight Gray, Hontech C-00004031 12 (AJ0E3H1A.C.E.K.W1F) D003815 Precision Industry 40-D003816 40Stand Assy, A190E3-H0F, Midnight Gray, Hontech C-00004033 13 (AJ0E3H1A.C.E.K.W1F) D003816 Precision Industry Audio Cable, A150X2, 18AWG, 180cm, Black, JCE CB-00000544 32F2818004 32F2818004 14 Cables: CB-00004034 FFC_X, 0.50x45x62xCx(5/5)x(0.175x0.3), 45 Pins, no 32-D000557 32-D000557 15 AL foil Monitor Cable, A150X2, 30AWG, 180cm, Black, JCE CB-00000547 32F3018003 32F3018003 16 32-D003899 17 32-D003899 FFC-OSD, 22 Pins, TennRich CB-00004035 Carton Label for , A190E3-H0F, 76.2 mmx76.2 mm, DC-00004038 Documentation: 77-D004122 77Chang Huang, VSC(VA912b-3) (AJ0E3H1A.C.E.K.W1F) D004122 18 7741519181 19 7741519181 Label, Bar-Code Labe, 55*13mm DC-00002073 76-D004095 MENU for VSC_VA912-3, Paper, 1C, Yi-Ching Special DC-00004039 76(AJ0E3H1C.E.K.W1F/2F Printing, A190E3-H0F D004095 20 ) MENU for VSC_VA912-3+Caution Card, Paper, 1C, YiDC-00004040 76-D004134 76Ching Special Printing, A190E3-H0F (AJ0E3H1A1F/2F) D004134 21 77-D004094 77Safety Label for , A190E3-H0F, 120 mmx50 mm, Chang DC-00004048 22 (AJ0E3H1A.C.E.K.W1F) D004094 Huang, VSC_VA912b-3 42A9930008 23 Hardware: 42A9930008 Screw, M3*P0.5*4, f 5.5*2 HW-00000553 42A9990005 24 42A9990005 Screw, M3*P1.27*12, f 5.5*2 HW-00000556 SCREW, M4, P=0.7 mm, L=15 mm, Special Thin Head, HW-00002442 Phillips Cross Recess, Screw_with_Washer, SHYE 42-D000314 42-D000314 CHING SCREW 25 SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips HW-00004042 42-D000649 42-D000649 Cross Recess, plate Ni, Screw_with_Washer, SHYE 26 CHING SCREW, head D8 42A9940007 27 42A9940007 Stand-Off 4 #-40*11.8 M-00000559 Tape, Security Tape, OPP, L900xW50x0.045mm, VSC M-00000560 7345511002 7345511002 28 Miscellaneous: Carton, A190E3-H0F, 536 mmx148 mmx475 mm, Chen P-00004044 78-D004092 78Packing Material: Ti Paper, VSC_VA912b-3 (AJ0E3H1A.C.E.K.W1F) D004092 29 Cushion, A190E3-H0F, PE_LD, White, 530 mmx140 P-00004045 78-D003913 78-D003913 mmx50 mm, N/A, Hwa Chang, PE_Foam(BOTTOM) 30 Cushion, A190E3-H0F, PE_LD, White, 530 mmx140 P-00004046 78-D003911 78-D003911 31 mmx50 mm, N/A, Hwa Chang, PE_Foam(TOP) Inner Box, 456x290x38mm, A190E1-H01 P-00000594 7841935111 7841935111 32 PE Foam Bag, Protector, 570*600*0.13, A190E1-H01, P-00000595 7841919921 7841919921 33 white ViewSonic Corporation 50 Confidential-Do Not Copy VA912/b-3 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 BOM LIST (VA912/b-3) ViewSonic Model Number: VS10931-1W Rev: 1a Item ViewSonic P/N Ref. P/N 1 #N/A MJ0E501K01 2 #N/A L3J005XXXX Description 19" Semi Product,19E5-L01,Default 19"E5 TN PS Asahi 0.7mm glass CF Polarizer M190E5,383.15x307.85x0.215,135°,Optimax LPTHL56-T12AGA1SU TFT Polarizer M190E5,380.52x304.13x0.215,135°,Optimax LPTHL56-T12SU Driver IC,Scan,A170E1,HX8633CPD400,256Channel Driver IC,COF,Data,HX8002CB97,COF,A190E3-H&M190E5L01,384Channel ACF,AC-4251FY-16,100M/RL ACF,PCB,AC-9825R-35,100000 mmx1.5 mm ACF,COG,AC-8405Z-23 1.5mmX100M,100000 mmx1.5 mm PCBA for ,A190E3-H,A190E3-H-X,301-03,Rev.03 Silicone,TORAY/-9187L,白色,330g 3 #N/A 7414119023 4 5 #N/A #N/A 7414119024 36-D001339 6 7 8 9 10 11 #N/A #N/A #N/A #N/A #N/A #N/A 36X8002971 7344191017 73-D002676 73-C000047 35-D002646 7349951002 12 13 14 15 16 17 18 #N/A #N/A #N/A CB-00004034 #N/A HW-00000556 HW-00000553 PJ0EFH0Q06 44-D003904 41-D002813 32-D000557 41-D000546 42A9990005 42A9930008 19 20 21 HW-00004042 #N/A #N/A 42-D000649 41-D000632 73-D004702 22 23 24 25 26 27 28 29 A-00004021 C-00004030 B-00004023 CB-00004035 HW-00002442 M-00000559 #N/A #N/A 27-D003115 40-D003821 35-D002998 32-D003899 42-D000314 42A9940007 73-D001960 73-D002812 Olympic,A190E3,Function BOM,D-sub+DVI+Audio,Morning Star, Backlight Unit,A190E3 Metal Frame Front Assy,A190E3,assy FFC,0.50x45x62xCx(5/5)x(0.175x0.3),45 Pins Cover AD Assy,A190E3,ASSY Screw,M3*P1.27*12 Screw,M3*P0.5*4 SCREW,M4,P=0.7 mm,L=8 mm,Round Head,Phillips Cross Recess,plate Ni,Screw_with_Washer PCBA Cover Assy,A190E3,ASSY Isolated Tape,PET,147 mmx137 mmx0.1 mm Lips Without Audio,DAC-19M001 BF,Ver:00 A,19 V/2.5 A,5 V/3 A,4L,4.9 mA,2380 V Seat Assy,A190E3-H0F,BLACK C PCBA for ,A190E3,A190E3-T-K,303-02,Rev.31 FFC,22 Pins SCREW,M4,P=0.7 mm,L=15 mm,Special Thin Head Stand-Off 4 #-40*11.8 Spacer,tape,BLACK,308 mmx2 mmx0.1 mm Spacer,polyester film,black,379 mmx2.5 mmx0.08 mm 30 B-00004022 35-D004062 PCBA for ,A190E3,A190E3-H-S1,301-72,Rev.07 31 32 33 #N/A CB-00000544 CB-00000547 PJ0EAAS000(A1F.A2F) PJ0EACS000(C1F.C2F) PJ0EAET000(E1F.E2F) PJ0EAKU000(K1F.K2F) PJ0EAW5000(W1F.W2F) 32F2818004 32F3018003 34 #N/A 32-D001922 ViewSonic Corporation Location Q'ty common 1 1 common 1 common common 1 1 common common common common common common 10 0.00398 0.00398 0.00398 1 0.4 common common common common 1 1 1 2 1 common 15 common common common 1 1 1 common common common common 1 1 1 1 4 4 2 2 common 1 Olympic,19",Accessory BOM,D-sub+Audio,USA 3 pin,Black,Power built-in;RoHS Olympic,19",Accessory BOM,D-sub+Audio,China 3 pin,Black,Power built-in;RoHS Olympic,19",Accessory BOM,D-sub+Audio,European / Korea 2 pin,Black,Power built-in;RoHS Olympic,19",Accessory BOM,D-sub+Audio,None,Black,Two power cords of UK & EU for VSC,Power built-in;RoHS Olympic,19",Accessory BOM,D-sub+Audio,Taiwan 3 pin,Black,Power built-in;RoHS Audio Cable,A150X2,18AWG,180cm,Black,JCE common Monitor Cable,A150X2,30AWG,180cm,Black,JCE common 1 1 1 Power Cord,VCTF 3G 0.75mm^2 CNS CT-08,Black,BSMI,1800 mm 1 51 Confidential-Do Not Copy W1F.2F VA912/b-3 Item ViewSonic P/N Ref. P/N 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 40 #N/A 10-D003929 41 #N/A 10-D003930 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 ViewSonic Corporation Description Olympic,A190E3,ID BOM,D-sub+DVI+Audio,USA,Black,VSC, Olympic,19",ID BOM,D-sub+DVI+Audio,USA,Silver Black,VSC, Olympic,A190E3,ID BOM,D-sub+DVI+Audio,China,Black,VSC, Olympic,A190E3,ID BOM,D-sub+DVI+Audio,China,Silver Black,VSC, Olympic,A190E3,ID BOM,Dsub+DVI+Audio,European,Black,VSC, Olympic,A190E3,ID BOM,D-sub+DVI+Audio,European,Silver Black,VSC, Olympic,A190E3,ID BOM,D-sub+DVI+Audio,UK,Black,VSC, Olympic,A190E3,ID BOM,D-sub+DVI+Audio,UK,Silver Black,VSC, Olympic,A190E3,ID BOM,D-sub+DVI+Audio,TWN,Black,VSC, Olympic,A190E3,ID BOM,D-sub+DVI+Audio,TWN,Silver Black,VSC, Bezel Assy,A190E3-H0F,SILVER PANTONE 877C Rear Assy,A190E3-H0F,BLACK C Stand Assy,A190E3-H0F,BLACK C Cover Hinge,A190E3-H0F,ABS PA-757N Software (EDID_DSUB),A190E3,Ver.NRVSCxxxxA00,ViewSonic,Checksum(xx),Anal og Port Software (EDID_DVI),A190E3,Ver.NRVSCxxxxD00,ViewSonic,Checksum(x x),DVI Port Software (BIOS),A190E3,Ver.NR19E3HS3000,ViewSonic,Checksum(xxxx), RSDS,Dual+Audio Panel Protector Film,A190E2-H06,mylar Tape,Security Tape,OPP,L900xW50x0.045mm,VSC Safety Label for ,A190E3-H0F SN Label for ,A190E3-H0F Label,Bar-Code Labe Label,Pallet Barcode Label Carton Label for ,A190E3-H0F Cushion,A190E3-H0F,PE_LD,White,530 mmx140 mmx50 mm Cushion,A190E3-H0F,PE_LD,White,530 mmx140 mmx50 mm Inner Box,456x290x38mm, A190E1-H01 Carton,A190E3-H0F PE Foam Bag,Protector,570*600*0.13,A190E1-H01,white Corner Protector Separator,1130x955x11,A190E1-H01 Pallet,A170E1-H01,Wooden,1150 mmx920 mmx135 mm MENU for VSC_VA912-3,Paper,1C,A190E3-H0F Shipping Package Information for ,A190E3-H0F,VSC 52 Confidential-Do Not Copy Location Q'ty A.C.E.K.W2F A.C.E.K.W2F A.C.E.K.W2F A.C.E.K.W2F 1 1 1 1 1 common 1 common 1 common common common A.C.E.K.W2F A.E.K.W2F common common common common common common A.C.E.K.W2F common common common common C.E.K.W2F common VA912/b-3 1 1 0.058 1 1 1 0.021 1 1 1 1 1 1 0.083 0.021 0.021 1 1 8. Exploded Diagram and Exploded Parts List ViewSonic Corporation Model Title Date ViewSonic Corporation 53 Confidential - Do Not Copy VA912/b-3 Rev: EXPLODED PARTS LIST (VA912/b-3) ViewSonic Model Number: VS10931-1W Rev: 1a Item ViewSonic P/N Ref. 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 ViewSonic Corporation Description Q'ty ISM_A190E3_HAT 1 Bezel Assy,A190E3-H0F,SILVER PANTONE 877C 1 BEZEL 1 LENS 1 KEYPAD 1 SPEAKER 4 ohm 2W 2 SCREW T2.5*10L 4 VSC BIRDLOGO 1 VSC NAME PLATE 1 MYLAR PCBX 1 MYLAR LIGHT LEAKAGE 1 Rear Assy,A190E3-H0F,BLACK C 1 REAR 1 SUPPORT PLATE 1 SCREW T3*8L 1 RUBBER CAP 4 Screw,M3*P1.27*12, 2 Stand Assy,A190E3-H0F,BLACK C 1 SCREW,M4,P=0.7 mm,L=15 mm 4 COVER HINGE , A190E3-H0F 1 Seat Assy,A190E3-H0F,BLACK C 1 SEAT 1 RUBBER FOOT 6 54 Confidential-Do Not Copy VA912/b-3 9. Block Diagram Speaker OSD Key Pad / Audio Out Audio In 3.3V DVI-D Digital Video Main Board D-sub Analog Video LCD Module Signal DC/DC DC-5V DC-19V AC Power ViewSonic Corporation LIPS Backlight 55 Confidential - Do Not Copy VA912/b-3 10. Schematic Diagrams V5A VGA_5V DDC_CLK DDC_DAT DDC_CLK DDC_DAT V5A_ESD RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VGA OR0N OR0P OR1N OR1P OR2N OR2P V5A_ESD RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC OG0N OG0P OG1N OG1P OG2N OG2P B3 R+ RG+ GB+ BCLK+ CLK- R+ RG+ GB+ BCLK+ CLK- V5A_ESD DVI V5A R+ RG+ GB+ BCLK+ CLK- OB0N OB0P OB1N OB1P OB2N OB2P OCLKP OCLKN V5A B4 B7 OSD V5A LED_OR LED_GR SOURCE_SELECT MENU KEY_DOWN KEY_UP AUTO_ADJ PWR_SW LED_OR LED_GR SOURCE_SELECT MENU KEY_DOWN KEY_UP AUTO_ADJ PWR_SW V5A AUDIO_ON AUDIO_ON INV_ON/OFF DCDC_ON/OFF PANEL_ON/OFF VCM_PWM XAO OPTION1 OPTION1 OPTION2 OPTION2 ER0N ER0P ER1N ER1P ER2N ER2P 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 CSZ SCL SDA HWRESET INT AD0 AD3 AD1 AD2 VOL1 SCALER CSZ SCL SDA HWRESET INT AD0 AD3 AD1 AD2 INV_ADJ VOL1 VOL1 B5 EG0N EG0P EG1N EG1P EG2N EG2P EB0N EB0P EB1N EB1P EB2N EB2P ECLKP ECLKN ESTH OSTH DCDC_ON/OFF VGH VGH VGL DC/DC VGL V18C V33C VAA VAA V5 V5A PANEL_INTERFACE B10 B1 B2 STB POL STV CKV OE GVON GVOFF OR0N OR0P OR1N OR1P OR2N OR2P OR0N OR0P OR1N OR1P OR2N OR2P OG0N OG0P OG1N OG1P OG2N OG2P OG0N OG0P OG1N OG1P OG2N OG2P OB0N OB0P OB1N OB1P OB2N OB2P OB0N OB0P OB1N OB1P OB2N OB2P OCLKP OCLKN OCLKP OCLKN ER0N ER0P ER1N ER1P ER2N ER2P ER0N ER0P ER1N ER1P ER2N ER2P EG0N EG0P EG1N EG1P EG2N EG2P EG0N EG0P EG1N EG1P EG2N EG2P EB0N EB0P EB1N EB1P EB2N EB2P EB0N EB0P EB1N EB1P EB2N EB2P ECLKP ECLKN ECLKP ECLKN ESTH OSTH ESTH OSTH XAO STB POL STV CKV OE GVON GVOFF STB POL STV CKV OE GVON GVOFF VGH VGL VAA VCM B6 V5A V33C V5 VAA V5A V18C INVERTER I/F V33C B9 POWER INV_ON/OFF V33P GMA[1..14] PANEL_ON/OFF GMA[1..14] VCM_PWM GMA[1..14] VCM VCM V33P V33P V18C V33C INV_ADJ INV_ADJ ViewSonic Corporation Model TOP Title Date Confidential - Do Not Copy ViewSonic Corporation 56 VA912/b-3 Rev: V5A1 V5A 1 V5A TP VAA VAA VAA1 1 TP VGH VGH1 VGH 1 VGL 1 TP VGL VGL1 DCDC_ON/OFF TP 2 D34 CP36 1 3 QP18 RP16 RP14 D3 2 2 CP4 1 3 ZDP6 3 CP2 CP28 CP6 CP11 RP20 2 1 D2 GND_POWER CP9 2 1 CP15 CP3 RP15 VGL 1 3 CP25 RP19 GND_POWER 3 GND_POWER RP12 QP17 1 2 VAA CP1 RP31 V5A V5 LP3 FP1 V5 1 2 GND_POWER + CP17 GND_POWER QP13 DP1 1 2 2 CP16 VAA 3 CP13 LP4 CP14 1 RP48 LP5 RP49 LP6 3 RP8 RP7 GND_POWER QP2 GND_POWER 1 GND_POWER 2 [INV_GND] V5A V5A GND_POWER CP10 RP11 GND_POWER CP18 RP32 1 2 RP3 IN- SCP OSC 7 RP1 FB VCC UP1 8 GND_POWER GND (High --> Enable) 6 2 1 5 QP4 DCDC_ON/OFF OUT BR/CTL 3 3 1 GND_POWER 4 2 RP6 GND_POWER RP37 CP21 CP19 CP20 GND_POWER CP37 1 CE SCP UP2 RR1 IN- FB GND_POWER 8 3 2 7 OUT VCC OSC GND 5 6 4 GND_POWER CP38 RP50 CP39 RP52 RP51 RP53 CP40 ViewSonic Corporation RP54 GND_POWER Model GND_POWER DC/DC Title Date ViewSonic Corporation 57 Confidential - Do Not Copy VA912/b-3 Rev: V5A_ESD V5A_ESD CON1 R6 V5A 11 3 19 22 V5A 2 1 R7 18 17 10 9 2 1 13 12 5 4 21 20 23 24 2 2 D7 D5 D8 3 D4 U2 1 2 3 4 1 1 DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT5+ DAT5clk+ clk- R5 2 1/3shield 2/4shield 0/5shield clk shield 25 26 27 29 28 8 15 6 7 14 16 1 R G B RGB GND HSYNC VSYNC SYNC GND DDC SCL DDC SDA +5V HPD C163 NC NC NC GND VCC VCLK SCL SDA R9 R10 R11 8 7 6 5 R12 GND_POWER GND_POWER R13 R+ RG+ GB+ BCLK+ CLK- R14 R15 R16 R17 R18 R19 3 C38 C37 2 3 3 1 1 C36 C35 D16 D15 1 2 C34 C33 D14 1 1 2 2 C32 R20 D13 3 1 2 C31 V5A_ESD 2 R213 D12 3 3 3 3 1 1 V5A D11 2 D10 D9 2 GND_POWER D17 C39 GND_POWER GND_POWER ViewSonic Corporation Model DVI INTERFACE Title Date ViewSonic Corporation 58 Confidential - Do Not Copy VA912/b-3 Rev: CN2 1 2 3 4 5 6 7 8 V5 GND_INV R198 V33C C162 3 R199 Q19 R200 1 2 INV_ON/OFF GND_POWER V33C R196 R195 3 V33C C30 Q18 R197 INV_ADJ 2 1 GND_POWER ViewSonic Corporation Model INVERTER I/F Title Date Confidential - Do Not Copy ViewSonic Corporation 59 VA912/b-3 Rev: GND_POWER VCPU C172 C171 R218 R22 SDA R139 03/08/04 R140 R219 SDA1 SCL1 C46 C47 V5A 36 37 15 LED R35 43 44 35 39 38 GND_POWER 5 6 Avoid entering the self-test mode of the MCU. 4 VDD3 8 VDD HSCL/P3.0/RX HSDA/P3.1/TX P3.2/INT0 ISDA/P3.4/T0 ISCL/P3.5/T1 VBLANK/P4.0 HBLANK/P4.1 STOUT/P4.2 DA0/P5.0 DA1/P5.1 DA2/P5.2 DA3/P5.3 DA4/P5.4 DA5/P5.5 DA6/P5.6 AD0/P6.0 AD1/P6.1 AD2/P6.2/HLFHI AD3/P6.3 DA10/P6.4 DA11/P6.5 DA12/P6.6 DA13/P6.7 HSYNC VSYNC DA7/HCLAMP HLFHO/DA8 HALFV/DA9 AD0 AD1 AD2 AD3 3 2 1 42 41 40 34 27 26 16 9 30 31 32 33 NC NC GND_POWER R28 R29 VCPU 2 D19 1 2 3 Q1 V5A MTV312M V5A R30 R31 V5A R32 R33 R34 Q2 1 GND_POWER 5V_ON/OFF R36 5V_ON/OFF GND_POWER R37 Q3 GND_POWER V5A 2 3 GND_POWER L8 GND_POWER R42 OPTION1 OPTION2 INV_ON/OFF MENU KEY_DOWN KEY_UP SOURCE_SELECT AUTO_ADJ PWR_SW LED_GR LED_OR AUDIO_ON R193 XAO VCM_PWM LED V5A GND_POWER 10/20 V5A V5A R44 U4 R43 R46 R45 8 DCDC_ON/OFF 1 7 V5A 3 Q6 R50 C49 SCL1 2 R49 VGA_5V 1 29 28 19 13 14 C44 3 R26 R27 RST 17 18 20 21 22 23 24 25 2 7 X1 GND_POWER P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 1 12 GND_POWER X2 VSS C45 2 GND_POWER DDC_CLK DDC_DAT INT 11 R24 Y2 1 D18 R25 U3 C42 C43 1 CSZ HWRESET R23 10 ZDP7 2 SCL C40 C41 SDA1 R47 6 R48 5 VCC A0 WP A1 SCL A2 SDA GND 1 C48 2 3 4 GND_POWER Q7 C50 1 PANEL_ON/OFF (PANEL POWER CONTROL) GND_POWER VCPU 2 R52 3 R51 GND_POWER DDC_DAT DDC_CLK CN8 1 2 3 4 GND_POWER ViewSonic Corporation Model MCU Title Date Confidential - Do Not Copy ViewSonic Corporation 60 VA912/b-3 Rev: V5A 5 6 7 8 5 6 7 8 V5A R53 4 3 2 1 R54 4 3 2 1 RP47 RP46 CN3 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 LP11 MENU KEY_DOWN KEY_UP SOURCE_SELECT AUTO_ADJ 4 3 2 1 4 3 2 1 4 3 2 1 5 6 7 8 5 LP9 6 7 8 5 6 7 8 LP10 LED_G LED_O PWR_SW AUDIO_ON VOL1 OPTION1 OPTION2 4 3 2 1 4 3 2 1 V5A R179 CP34 5 6 7 8 3 5 6 7 8 Q15 3 R181 LED_O 1 2 LED_OR AUD_L AUD_R 1 Q14 2 CP33 GND_POWER V5A R214 R215 R182 AUD_L AUD_R1 1 1 R217 3 L24 1 R184 1 L23 LED_G 2 LED_GR L21 L22 3 Q16 2 R216 L20 Q17 AUD_L1 J1 AUD_G1 C169 1 C167 GND_AUD GND_AUD AUD_R C170 C168 GND_AUD ViewSonic Corporation Model OSD INTERFACE Title Date Confidential - Do Not Copy ViewSonic Corporation 61 VA912/b-3 Rev: V33B CN4 (3-STEP) L9 XAO OE CKV VSD V33P VGH_P PANEL_VGH 3 Q8 2 C51 STV VGD PANEL_VGL 1 R55 STV XAO OE CKV GND_POWER PANEL_VGH VGD L10 R56 VGD R57 R58 VCOM C52 GVON 2 GND_POWER C54 C53 GVOFF R59 GND_POWER L12 VGL ZD1 OB2P OB2N OB1P OB1N OB0P OB0N POL STB OCLKN OCLKP GVOFF GND_POWER VGL 1 4 5 B_S Q9 3 B_D 6 A_D B_G 1 A_S VGH_P VGH A_G L11 VGH OSTH GND_POWER 2 GVON GND_POWER OG2P OG2N OG1P OG1N OG0P OG0N OR2P OR2N OR1P OR1N OR0P OR0N PANEL_VGL C55 C56 OSTH OB2P OB2N OB1P OB1N OB0P OB0N POL STB OCLKN OCLKP OG2P OG2N OG1P OG1N OG0P OG0N OR2P OR2N OR1P OR1N OR0P OR0N 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 VSD1 VSD 1 VSA 1 VSA1 VCOM1 VCOM 1 VGD 1 VGD1 P_VGH1 PANEL_VGH 1 P_VGL1 PANEL_VGL 1 STB1 STB 1 POL 1 ESTH 1 POL1 GND_POWER GND_POWER ESTH1 L13 VCM VCOM VCM OSTH1 CN5 C57 C58 C60 C59 C61 VSD ESTH EB2P EB2N EB1P EB1N EB0P EB0N GND_POWER L14 VAA VSA VAA ECLKN ECLKP C63 C62 C64 GMA1 GMA2 GMA3 GMA4 GMA5 GMA6 GMA7 GND_POWER VCOM ESTH EB2P EB2N EB1P EB1N EB0P EB0N ECLKN ECLKP GMA1 GMA2 GMA3 GMA4 GMA5 GMA6 GMA7 VSA GMA8 GMA9 GMA10 GMA11 GMA12 GMA13 GMA14 EG2P EG2N EG1P EG1N EG0P EG0N U5 4 NC VSS VDD 5 CD OUT 3 GND_POWER 2 1 1 V33B R60 ER2P ER2N ER1P ER1N ER0P ER0N 2 XAO XAO GMA8 GMA9 GMA10 GMA11 GMA12 GMA13 GMA14 EG2P EG2N EG1P EG1N EG0P EG0N 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 1 OSTH STV1 1 STV CKV1 1 CKV OE1 OE 1 GVON 1 GVON1 GVOFF1 1 GVOFF GND_POWER ViewSonic Corporation Model PANEL I/F Title Date Confidential - Do Not Copy ViewSonic Corporation 62 VA912/b-3 Rev: VPREF1 VPREF 1 R61 R64 GMA1 V33A1 GMA1 1 V5A R65 TP VS1 V33A 1 GMA1 U6 L15 GMA2 Vin Vout 1 GMA2 2 GMA2 R67 C71 C70 R70 GMA3 C73 C72 GMA3 1 VS3 (PANEL VCC) V33A 1 GND R66 VS2 3 V5A GMA3 R71 GND_POWER R72 V33C1 GMA4 GMA4 1 TP VS4 GMA4 U8 1 R73 L16 3 VIN GMA5 GND R74 VS5 VOUT VOUT V33C 2 4 V33C (SCALER VCC) 1 1 GMA5 GMA5 R201 C80 C79 C78 C81 R202 GMA6 GMA6 1 VS6 R203 GMA6 GND_POWER R204 VS7 GMA7 1 GMA7 V18V1 PP11 GMA7 R76 TP R75 R79 VCN VPREF L17 U10 D21 D20 1 2 2 1 3 VIN GND 1 R80 VCN1 VOUT VOUT V18C 2 4 V18C (SCALER Core VCC) 1 R81 1 PP12 C91 C93 C92 C94 R82 GND_POWER GMA8 GMA8 1 VS8 R83 GMA8 R86 GMA9 GND_POWER GMA9 1 VS9 R87 GMA9 R88 GMA10 GMA10 1 VS10 GMA10 R89 R90 VS11 GMA11 V33A 1 GMA11 R91 (Panel VCC) GMA11 3 Q10 2 R92 C100 R96 GMA12 V33P 1 GMA12 1 VS12 R97 GMA12 R93 1 GMA13 GMA13 R98 C104 C105 QP19 1 PANEL_ON/OFF 2 GMA13 R206 C103 3 R205 VS13 C106 R207 GMA14 GMA14 1 VS14 R208 GMA14 GND_POWER GND_POWER VCM1 VOP1 GND 2 4 R99 VPREF R104 1 VSCM 3 2 C110 U14A + 1 C107 VCM C109 R101 R103 VCM R100 C108 VSCN VSCM_ADJ 5 6 - R106 + U14B 7 GND_POWER C111 R105 VSCN_OUT VCN - R107 4 C112 R102 GND_POWER VOP VPREF 2 4 8 VOUT VOUT VOUT VOUT C113 4 VIN GND 3 8 1 VOP VAA VIN 1 9.99V L18 VAA 3 VOP U13 1 U12 V5A C114 C115 R108 3 GND_POWER Q11 GND_POWER GND_POWER GND_POWER GND_POWER GND_POWER GND_POWER 2 VCM_PWM VCM_PWM 1 GND_POWER ViewSonic Corporation Model POWER Title Date Confidential - Do Not Copy ViewSonic Corporation 63 VA912/b-3 Rev: R+ RG+ GB+ BCLK+ CLK- R+ RG+ GB+ BCLK+ CLK- 40 41 43 44 46 47 49 50 52 R1 VDVI VDD 18 87 97 117 11 21 84 94 104 114 126 VPO VDDC VDDC VDDC VDDC VDDP VDDP VDDP VDDP VDDP VDDP VDDP AVDD_PLL 45 51 35 VDPLL 53 55 65 RIN0 RIN0M GIN0 GIN0M SOGIN0 BIN0 BIN0M HSYNC0 VSYNC0 AVDD_DVI AVDD_DVI 63 62 60 59 61 58 57 37 38 AVDD_MPLL RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC VPLLVDVI AVDD AVDD U1 VAD GA1P GA1N GA2P GA2N GA3P GA3N R+ RG+ GB+ BCK+ CKREXT BA1P BA1N BA2P BA2N BA3P BA3N CLKAP CLKAN C6 66 CSZ 69 SCL 71 SDA 70 HWRESET 32 INT 72 AD0 30 AD3 31 AD1 77 AD2 78 CSZ SCL SDA HWRESET INT AD0 AD3 AD1 AD2 73 74 INV_ADJ RB1P RB1N RB2P RB2N RB3P RB3N REFM NC GB1P GB1N GB2P GB2N GB3P GB3N NC NC BB1P BB1N BB2P BB2N BB3P BB3N CLKBP CLKBN ALE/CSZ RDZ/SCL WRZ/SDA HWRESETZ INT AD0/GPO6 AD3/GPO5 AD1/EINV AD2/OINV PWM0 PWM1 C22 33 106 107 108 109 110 111 112 113 OR2P OR2N OR1P OR1N OR0P OR0N 98 99 100 101 102 103 OG2P OG2N OG1P OG1N OG0P OG0N 88 89 90 91 92 93 118 119 OB2P OB2N OB1P OB1N OB0P OB0N OCLKP OCLKN 16 17 22 23 24 25 ER2P ER2N ER1P ER1N ER0P ER0N OR2P OR2N OR1P OR1N OR0P OR0N ESP OSP XIN Y1 L1 C3 GND_POWER OB2P OB2N OB1P OB1N OB0P OB0N OCLKP OCLKN 7 8 9 12 13 14 15 122 123 124 125 128 1 4 5 120 121 EG2P EG2N EG1P EG1N EG0P EG0N ESTH OSTH 83 82 81 80 79 28 29 GVON1 STB STV CKV OE POL1 GVOFF L2 C4 C5 GND_POWER EB2P EB2N EB1P EB1N EB0P EB0N ECLKP ECLKN V33C VDVI L3 D1 C7 C8 C9 C10 ESTH OSTH POL R186 STB STV CKV OE R187 GVOFF GVON R188 GNDC GNDC GNDC GNDC GND_POWER GVON POL V33C VDPLL L4 C12 V33C V5A VPLL EG2P EG2N EG1P EG1N EG0P EG0N EB2P EB2N EB1P EB1N EB0P EB0N ECLKP ECLKN 75 76 V33C ER2P ER2N ER1P ER1N ER0P ER0N 19 86 96 116 GNDP GNDP GNDP GNDP GNDP GNDP GNDP 10 20 85 95 105 115 127 56 64 68 36 R3 AVSS_DVI AVSS_DVI AVSS_DVI GND_POWER BUSTYPE AVSS_PLL R2 BYPASS AVSS_LPLL 39 42 48 6 54 3 2 C24 GND_POWER GPO0 GPO1 GPO2 GPO3 GPO4 DDC1_DAT/GPO7 DDC1_CLK/GPO8 XOUT AVSS AVSS AVSS AVSS_MPLL 34 C2 C1 R185 C23 VAD V33C OG2P OG2N OG1P OG1N OG0P OG0N REFP C11 67 NC NC RA1P RA1N RA2P RA2N RA3P RA3N C13 VOL_ADJ1 1 R209 Q20 GND_POWER R138 GND_POWER V5A VOL1 1 C164 2 1 3 V5A GND_POWER R210 VOL1 R212 R211 + C165 C166 V33C VPO L5 V33C C14 C15 C16 C17 C18 C19 C20 C21 GND_POWER GND_POWER V18C VDD L6 V18C C25 C26 C27 C28 C29 ViewSonic Corporation GND_POWER Model SCALER Title Date Confidential - Do Not Copy ViewSonic Corporation 64 VA912/b-3 Rev: R109 11 DDC_DAT R110 1 6 2 7 3 8 4 9 5 10 12 13 14 15 C116 R111 R113 C117 R112 R115 C118 R114 C119 R116 R117 R118 C120 BIN SOG R119 C121 RIN GIN C122 CN7 R120 C123 GNDR GND_POWER C124 R121 GNDG D22 R123 3 1 D23 D24 D26 12/15/2003 2 2 2 V5A_ESD C158 C159 GND_POWER Most of Customers Recommended. R124 2 GND_POWER V5A_ESD C157 GND_POWER GNDB 1 1 D25 DDC_CLK C125 3 3 R122 R125 D32 HSYNC R126 1 C126 GND_POWER GND_POWER R127 2 VSI GND_POWER R128 VSYNC D33 C127 1 R129 HSYNC1 TP VSYNC1 TP 1 HSYNC GND_POWER GND_POWER R130 CLK_DDC VSYNC GND_POWER DDC_CLK R131 DAT_DDC 1 VGA_5V VGA_5V DDC_DAT 2 (0603/100) V5A L19 D29 V5A 03/08/04 D30 VGA_5V 03/08/04 C128 2 2 R133 1 2 2 D27 D28 R134 D31 C129 R135 1 1 1 1 12/15/2003 R136 GND_POWER NC NC NC GND VCC VCLK SCL SDA 8 7 6 5 GND_POWER 3 U15 1 2 3 4 VGA_5V R137 GND_POWER ViewSonic Corporation GND_POWER Model VGA Title Date Confidential - Do Not Copy ViewSonic Corporation 65 VA912/b-3 Rev: 11. ViewSonic Corporation 66 PCB Layout Diagrams Confidential - Do Not Copy VA912/b-3 * 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 Excellent Good Fair Bad 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 Diagrams 10. Schematic Diagrams 11.PCB Layout Diagrams B. Are you satisfied with this Service Manual? Item 1. Service Manual Content 2. Service Manual Layout 3. The form and listing C. Do you have any other opinions or suggestions regarding this service manual? Reader’s basic dada: Name: Company: Title: Add: Tel: E- mail: Fax: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes ([email protected]) ViewSonic Corporation 67 Confidential-Do Not Copy VA912/b-3