ViewSonic VS10805, VA905-1 Service Manual

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Model No. VS10805
19” Color TFT LCD Display
Service Manual
ViewSonic VA905-1
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
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Copyright
Copyright
¤
2005 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.
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
ViewSonic is a registered trademark of ViewSonic Corporation. All other trademarks used within this document are the property of their respective owners.
Optiquest is a registered trademark of ViewSonic Corporation.
Revision History
ECR Number
Description of Changes
EditorRevision SM Editing Date
1a
Initial Release
A. Lu
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TABLE OF CONTENTS
2. Specification
3. Front Panel Function Control Description
4. Circuit Description
6. Troubleshooting Flow Chart
9. Block Diagram
10. Schematic Diagrams
7. Recommended Spare Parts List
1. Precautions and Safety Notices
5. Adjustment Procedure
8. Exploded Diagram and Spare Parts List
11. PCB Layout Diagrams
1 5 8
15 16 32
36 43 50
51
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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.
1. Precautions and Safety Notices
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(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or
bend the TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be damaged.
(12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local
ordinances or regulations for disposal.
(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.
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5. Handling and Placing Methods
Correct Methods: Incorrect Methods:
Only touch the metal frame of the LCD panel or the front cover of the monitor. Do not touch the surface of the polarizer.
Surface of the LCD panel is pressed by fingers and that may cause ”Mura”.
Take out the monitor with cushions Taking out the monitor by grasping the LCD
panel. That may cause ”Mura”
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Place the monitor on a clean and soft foam pad.
Placing the monitor on foreign objects. That could scratch the surface of the panel or cause “Mura”.
The panel is placed facedown on the lap. That may cause “Mura”.
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2. Specification
1. General Requirements
General Specifications
Test Resolution & Frequency “1280 x 1024” @ 60Hz Test Image Size Full Size Contrast and Brightness Controls Factory Default:
Contrast = 70%, Brightness = 100%
2. Signal Interface
Video Interface
Analog Input Connector DB-15 (Analog) Digital Input Connector DVI-D (Digital) Default Input Connector Defaults to the first detected input Video Cable Connector DB-15 Pin out Compliant DDC 1/2B.
Video Signals
Video RGB (Analog) Separate Sync
2. TMDS (Digital)
Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)
Exclusions Not compatible with interlaced video.
3. Power
Power Supply
Input Voltage Range 90 to 264 VAC Power Dissipation 40 WATTS (TYP)
4. Electrical Requirements
Horizontal / Vertical Frequency
Horizontal Frequency 30 – 82 kHz Vertical Refresh Rate 50 – 85 HZ Maximum Pixel Clock 135 MHz Primary Preset “1280 x 1024” @ 60Hz
Look up table timing <<Analog>>
1. 640 x 350 @ 70Hz, 31.5kHz
2. 640 x 480 @ 60Hz, 31.5kHz
3. 640 x 480 @ 67Hz, 35.0kHz
4. 640 x 480 @ 75Hz, 37.5kHz
5. 640 x 480 @ 72Hz, 37.9kHz
6. 640 x 480 @ 85Hz, 43.27kHz
7. 720 x 400 @ 70Hz, 31.5kHz
8. 800 x 600 @ 56Hz, 35.1kHz
9. 800 x 600 @ 60Hz, 37.9kHz
10. 800 x 600 @ 75Hz, 46.9kHz
11. 800 x 600 @ 72Hz, 48.1kHz
12. 800 x 600 @ 85Hz, 53.7kHz
13. 832 x 624 @ 75Hz, 49.7kHz
14. 1024 x 768 @ 60Hz, 48.4kHz
15. 1024 x 768 @ 70Hz, 56.5kHz
16. 1024 x 768 @ 72Hz, 58.1kHz
17. 1024 x 768 @ 75Hz, 60.0kHz
18. 1024 x 768 @ 85Hz, 68.67kHz
19. 1280 x 1024 @ 60Hz, 63.4kHz
20. 1280 x 1024 @ 75Hz, 79.97kHz
<<Digital>> 640 x 350 @ 70Hz, 31.5kHz 640 x 400 @ 60Hz, 31.5kHz 640 x 480 @ 60Hz, 31.5kHz 640 x 480 @ 75Hz, 37.5kHz 640 x 480 @ 72Hz, 37.9kHz 640 x 480 @ 85Hz, 43.27kHz 720 x 400 @ 70Hz, 31.5kHz 800 x 600 @ 56Hz, 35.1kHz 800 x 600 @ 60Hz, 37.9kHz 800 x 600 @ 75Hz, 46.9kHz 800 x 600 @ 72Hz, 48.1kHz 800 x 600 @ 85Hz, 53.7kHz 1024 x 768 @ 60Hz, 48.4kHz 1024 x 768 @ 70Hz, 56.5kHz 1024 x 768 @ 72Hz, 58.1kHz 1024 x 768 @ 75Hz, 60.0kHz 1024 x 768 @ 85Hz, 68.67kHz 1280 x 1024 @ 60Hz, 63.4kHz
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Changing Modes
Maximum Mode Change Blank Time for image stability. Note:
1) Excluding “Auto Adjust” time
2) Under DOS mode (640 x 350, 720 x 400 & 640 x 400), there is no “Auto Adjust” feature.
3) The monitor needs to do “Auto Adjust” the
first time a new mode is detected.
Under 5 seconds (Maximum) 1 seconds (Typ.) for recognized timings 1-2 seconds (Typ.) for unrecognized timing
5. Audio
Speaker Specification
Line input connection 3.5 mm stereo jack Line input signal 1.0Vrms Line input impedance 10K ohm Maximum power output (Electric) 2 W @ < 15 % DISTORTION Signal to Noise Ratio 72 dB Frequency response 400 Hz – 20 kHz Distortion <15 % THD (@1kHz),
6. LCD Panel
Panel Characteristics
Panel Type HSD190ME12-A02 Type “TFT ACTIVE MATRIX Active Size 376.32 (H) x 301.056 (V) Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0.294 mm # of Backlights 4 CCFL edge-light (2 top / 2 bottom) Backlight Life 40,000 Hours (minimum) Panel Performance
Luminance – Condition: CT = 6500K, Contrast = Max, Brightness = Max
250 cd/m2 (typ. after 30-minute warm-up) 200 cd/m2 (minimum after 30-minute warm-up)
Brightness Uniformity L5=Max 1.3 L5= Maximum Luminance/
Minimum Luminance Contrast Ratio 500:1 (typ.), 350:1 (minimum) Color Depth 16.2M colors (RGB 6-bit data+FRC data) Viewing Angle (Horizontal) 140 degrees @ CR>10 Viewing Angle (Vertical) 130 degrees @ CR>10
Response Time 10%-90% @ Ta=25°C
12 ms (typ.)
20 ms (maximum)
Note: The 2nd source of LCD panel is “HSD190ME12-A04
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7. Mechanical
Dimensions
Width 418 mm Height 412.5 mm Depth 178.5 mm Monitor Weight 5.6kg / 12.32 lbs
Ergonomics
Tilt Up 25 DEGREES MINIMUM Tilt Down -0 degrees
Package Specifications
Width 490 mm Height 525 mm Depth 145 mm Gross Weight 7.1kg (15.6 lb)
8. Environmental
Environmental Conditions
Operating Temperature 0°C to +40°C Storage Temperature -20°C to +60°C Operating Relative Humidity 20% to 80% RH Non-Condensing Storage Relative Humidity 5% to 90% RH Non-Condensing Operating Altitude 0 to +3,000 meters Storage Altitude 0 to +12,000 meters
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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 control screen for the highlighted control.
Also toggles between two controls on some screens.
Also a shortcut to Auto Image Adjust.
Power light Green = ON Orange = Power Saving
Standby Power On/Off
Displays the
Main Menu or
exits the
control screen
and saves
adjustments.
3. Front Panel Function Control Description
1. Control Location
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2. OSD Menu Controls
Select the menu items shown below by using the up [] and down [] buttons.
Main Menu:
Auto Adjust:
To automatically adjust H./V. Position, Phase adjust and Clock adjust.
REMARK: There may need manual adjustment of “ phase " for optimized
performance for various VGA tolerance.
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Contrast /Brightness:
To adjust the Contrast of the video and the backlight currency.
.
Color Adjust:
To select the color temperature 6500°K, 9300°K , 5400°K or user settings.
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Information:
To display the data about Horizontal / Vertical frequency, Pixel clock,
Resolution , Model number and Serial No. of the monitor.
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Image Adjust:
H./V. Position: To adjust the horizontal and vertical position of the video. Hsize: To adjust the horizontal pixel clock of the video. Fine Tune: To adjust the delay time of data and clock. Sharpness: To select the picture sharpness of display.
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Setup Menu::
Language Select: To select one of eight languages.
(English, French, German, Italian, Spanish, Finnish,
Japanese, Traditional Chinese, and Simplified Chinese)
Resolution Notifier: Enable : OSD will Notifier the best picture quality resolution
change
the resolution to 1280x1024
OSD Position: To set OSD position. OSD Timeout: To set the displaying time of OSD.
INPUT SELECT:TO SELECT DSUB ANALOG OR DVID DIGITAL INPUT
Memory Recall:
Restore default settings of Clock, H./V. Position, Phase, Contrast, Brightness, Color
temperature, OSD position, OSD timeout and Sharpness, Volume.
Audio Menu:
Volume: To adjust the output of speaker or earphone. Mute: To set or reset the mute function.
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3. Hot Keys for Function Controls
Buttons: Functions:
[Up] + [Down] arrows recall Contrast or Brightness while in the Contrast
or Brightness adjustment, or recall both of Contrast and Brightness when the OSD is not on.
[2] + [Up] volume mute on or off when OSD is not on.
[2] Input toggle (Analog or Digital)
[2] + [Up] + [Down] White Balance. White Balance should set the screen
on the pure black and white pattern with 640*480@60Hz resolution.
[2] + [Down] (hold for 10 seconds) Power Lock (Unlock). User won’t be able to turn off
the monitor.
[2] + [Up] (hold for 10 seconds) OSD Lock (Unlock). It will lock all functions.
[Up] + [Down] + [Power On] with signal
(hold for 3 seconds)
Inter FACTORY mode adj white balance.
[Up] + [Down] + [Power On]
without signal
(hold for 3 seconds)
Burn in Mode.
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1. Power supply (DC/DC Converter)
This brick convert is the 110-220AC input voltage to 12V AND 5V output for invert use and panel use and system controller use. It consists of a PWM IC (FP5001, I804), flywheel diode (MS2 2,D812), buck choke (L812) and capacitor C817. 5V Out put at 5,6 pin VCC 12V In put at L801,L812 pin
2. Scaling controller
The ADC is to convert RGB analog signal to digital signal that scaling chip can acknowledge. The HSYNC input receives a logic signal and provides the frequency reference for pixel clock generation. The scaling IC is to converts the input signal ranging from VGA to SXGA into SXGA resolution that panel can acknowledge.
GENERAL DESCRIPTION
The I108TSU56AK is a high performance, and fully integrated graphics processing IC solution for LCD monitors with resolutions 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, an integrated DVI receiver, and LVDS display interface. To further reduce system costs, the TSU56AK also integrates intelligent power management.
3. MTV312M64
The I106 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 DDC interface, 4- channel A/D converter, and a 64K-byte internal progr am Flash-ROM. A “CMOS output pin” means it can sink and drive at least 4mA current. It is not recommended to use Such pin as input function. A “open drain pin” means it can sink at least 4mA current but only drive 10~20uA to VDD. It can be used as input or output function and needs an external pull up resistor
4. Circuit Description
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1. Function Test
1.1 Product
- 19” LCD Monitor
1.2 Test Equipment
- Color Video Signal & Pattern (or PC with SXGA resolution and a sound card )
1.3 Test Condition
Before function test and alignment, each LCD Monitor should be run-in and warmed up for at least 30 minutes with the following conditions: (a) In room temperature, (b) With full-white screen, RGB, and Black (c) With cycled display modes,
640*480 (H=43.27kHz, V=85Hz) 800*600 (H=53.7kHz, V=85Hz) 1024*768 (H=68.67kHz, V=85Hz) 1280*1024 (H=79.97kHz, V=75Hz)
1.4 Test Display Modes & Pattern
1.4.1 Compatible Modes
Analog Digital
1. 640 x 350 @ 70Hz, 31.5 k Hz
2. 640 x 480 @ 60Hz, 31.5 k Hz
3. 640 x 480 @ 67Hz, 35.0 k Hz
4. 640 x 480 @ 75Hz, 37.5 k Hz
5. 640 x 480 @ 72Hz, 37.9 k Hz
6. 640 x 480 @ 85Hz, 43.2 7 kHz
7. 720 x 400 @ 70Hz, 31.5 k Hz
8. 800 x 600 @ 56Hz, 35.1 k Hz
9. 800 x 600 @ 60Hz, 37.9 k Hz
10. 800 x 600 @ 75Hz, 46.9kHz
11. 800 x 600 @ 72Hz, 48.1kHz
12. 800 x 600 @ 85Hz, 53.7kHz
13. 832 x 624 @ 75Hz, 49.7kHz
14. 1024 x 768 @ 60Hz, 48.4kHz
15. 1024 x 768 @ 70Hz, 56.5kHz
16. 1024 x 768 @ 72Hz, 58.1kHz
640 x 350 @ 70Hz, 31.5kHz 640 x 400 @ 60Hz, 31.5kHz 640 x 480 @ 60Hz, 31.5kHz 640 x 480 @ 75Hz, 37.5kHz 640 x 480 @ 72Hz, 37.9kHz 640 x 480 @ 85Hz, 43.27kHz 720 x 400 @ 70Hz, 31.5kHz 800 x 600 @ 56Hz, 35.1kHz 800 x 600 @ 60Hz, 37.9kHz 800 x 600 @ 75Hz, 46.9kHz 800 x 600 @ 72Hz, 48.1kHz 800 x 600 @ 85Hz, 53.7kHz 1024 x 768 @ 60Hz, 48.4kHz 1024 x 768 @ 70Hz, 56.5kHz 1024 x 768 @ 72Hz, 58.1kHz 1024 x 768 @ 75Hz, 60.0kHz
5. Adjustment Procedure
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17. 1024 x 768 @ 75Hz, 60.0kHz
18. 1024 x 768 @ 85Hz, 68.67kHz
19. 1280 x 1024 @ 60Hz, 63.4kHz
20. 1280 x 1024 @ 75Hz, 79.97kHz
1024 x 768 @ 85Hz, 68.67kHz 1280 x 1024 @ 60Hz, 63.4kHz
1.4.2 Function Test Display Pattern
Item Test Content Pattern Specification Remark
1 Frequency & Tracking Fine Line Moire Eliminate visual wavy
noise.
Figure 1
2 Contrast/Brightness 16 Gray Scale 16 gray levels should be
distinguishable.
Figure 2
3 Boundary Horizontal &
Vertical Thickness
Horizontal and Vertical position of video should be adjustable to be within the screen frame.
Figure 3
4 RGB Color
Performance
RGB Color Intensities
Contrast of each R, G, B, color should be normal.
Figure 4, 5, 6
5 Screen Uniformity &
Flicker
Full White Should be compliant with
the spec.
Figure 7
6 Dead Pixel/Line White Screen &
Dark Screen
The numbers of dead pixels should be compliant with the spec.
Figure 7, 8
7 White Balance Wh ite & Black
Pattern
The screen must have the pure white and black pattern, no other color.
Figure 9
Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2)
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Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4)
G. Color Pattern (Figure5) B. Color Pattern (Figure 6)
Full White Patter (Figure 7) Dark Screen Pattern (Figure 8)
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Black-White Pattern (Figure 9)
1.5 Function Test and Alignment Procedure
1.5.1 All Modes Reset You should do “All Mode Reset” (Refer to Chapter III-3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults.
1.5.2 Auto Image Adjust Please select and enter Auto Image Adjustfunction on Main Menu to see if it is workable. The Auto Image Adjustfunction is aimed to offer a better screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually.
1.5.3 Firmware
Test Pattern: Burn In Mode (Refer to Chapter III-3. Hot Keys for Function Controls)
- Make sure the F/W is the latest version.
1.5.4 DDC
Test Pattern: EDID program
- Make sure it can pass test program.
1.5.5 Fine Tune and Sharpness
Test Signal: 1280*1024@60Hz
Test Pattern: Line Moire Pattern
- Check and see if the image has noise and focus performs well. Eliminate visual line bar.
- If not, readjust by the following steps: (a) Select and enter “Fine Tune” function on “Manual Image Adjust” to adjust the image to eliminate visual wavy noise. (b) Then, select and enter “Sharpness” function to adjust the clarity and focus of the screen image.
1.5.6 Boundary
Test Signal: 1280*1024@60Hz Test Pattern: Horizontal & Vertical Line Thickness Pattern
- Check and see if the image boundary is within the screen frame.
- If not, readjust by the following steps: (a) Select and enter “Manual Image Adjust” function on OSD Main Menu. (b) Then, select and enter “Horizontal Size” or “Horizontal/Vertical Position” function to adjust the video boundary to be full scanned and within screen frame.
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1.5.7 White Balance
Test Signal: 1280*1024@60Hz Test Pattern: White and Black Pattern
1.5.8 R, G, B, Colors Contrast
Test Signal: 1280*1024@60Hz Test Pattern: R, G, B, Color Intensities Pattern and 16 Gray Scale Pattern
- Check and see if each color is normal and distinguishable.
- If not, please return the unit to repair area.
1.5.9 Screen Uniformity and Flic ker
Test Signal: 1280*1024@60Hz Test Pattern: Full White Pattern
- Check and see if it is in normal condition.
1.5.10 Dead Pixel and Line
Test Signal: 1280*1024@60Hz Test Pattern: Dark and White Screen Pattern
- Check and see if there are dead pixels on LCD panel with shadow gauge and filter film.
- The total numbers and distance of dead pixels should be compliant with the spec.
1.5.11 Mura Test Pattern: White, RGB, Black, & Grey
T est Tool: 8% ND Filter
- Check if the Mura can pass 8% ND Filter.
1.5.12 Audio Test Signal: Voice signal (optional, depend on model) Test Pattern: liberty
- Make sure there is audio output.
- Make sure that audio function (volume 80≦ %) is working without noise and resonance.
- Make sure that the sound of right and left speakers are in balance.
1.5.13 Check for Secondary Display Modes Test Signal: Analog: 640*350@70Hz; 640*480@60HZ
720*400@70Hz; 800*600@60HZ/70HZ/75HZ 832*624@75Hz, 1024*768@60HZ/70HZ/75HZ 1280*1024@60/75Hz
Digital: 640*350@70Hz; 640*480@60HZ
720*400@70Hz; 800*600@60HZ/70HZ/75HZ 1024*768@60/70/72/75; 1152*870@75Hz,
1280*1024@60Hz/75HZ
- Normally when the primary mode 1280*1024@60Hz is well adjusted and compliant with the specification, the secondary display modes will be great possible to be co mpliant with the spec. But we still have to check with the general test pattern to make sure every secondary is compliant with the specification.
1.5.14 All Modes Reset After final QC step, we have to erase all saved changes again and restore the factory defaults. You should do “All Mode Reset” again.
1.5.15 Power Off Monitor Turn off the monitor by pressing “Power” button .
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2. Firmware Upgrade Procedure
When you receive the returned monitor, please check whether the firmware version is the latest. If not, please do the following procedures to upgrade it to the latest version.
2.1 Equipment Needed
- VA905 Monitor
- Fixture for Firmware Upgrade
- VGA Cable
- PC (Personal Computer)
- LPT Cable
- Firmware Upgrade Program
- One additional monitor for checking the program execution
Printer Por
t
VA905
PC
LPT Cable
VGA Cable
2.2 Setup Procedure
2.2.1 Connect P2 of Fixture with printer port of PC by LPT Cable.
2.2.2 Connect P1 of Fixture wi th Monitor by VGA Cabl e.
2.2.3 Connect Power Cord to M onitor.
2.2.4 Connect PC to the additional monitor.
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3. ISP Download program procedure
3.1 Hardware Connect status:
3.2 Down load isp program
Step 1: Execute ISP.exe
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Step 2: Select MCU type
Pressing the Comb box to select the type of the MCU , It need to be selected the MTV312MV64 for this project. Then press the Creat Security File Button to enter step 3.
Step 3: Creat Security File Enter the three string into the blank like fig 2. Then press OK Button.
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Step 4: Load file Press the Load MCU File button to select the file will be download. (*.hex)
Step 5: Run
Pressing the Run Button to start download program. Press OK button to Enter ISP mode.
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Step 6: Download program finish
Pressing the OK Button to finish the download program procedure.
Trouble shooting:
If you find the status like the follow picture. Please check the following item. a. The connecting status between PC and ISP board. b. The connecting status between ISP status and Monitor. Turn off the power of monitor (AC plug off ) and disconnect the D-Sub connector . To connect the D-Sub connector and then turn on the power of monitor.(AC plug on)
If the test result shows “passed,” it means the connection is well. If no t (failed), it means the connection has problems. Then you need to check the setup procedure or reboot the PC, or simply use another PC to do the firmware upgrade.
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4. DDC Key In Procedure
Note:
1. Every time after replacing the main board, you have to do the DDC key in.
2. If you find the DDC does not conform to the monitor, you have to do the DDC key in.
4.1 Equipment Needed
- VA905 Series Monitor
- DDC Card
- PC
- RS232 cable
- DVI-DVI Cable
- Barcode Reader
- VGA Cable
VA905
DDC Card PC
DVI-DVI Cable
RS-232 Cable
Barcode Reader
VGA Cable
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4.2 Setup Procedure
1.Connect VGA Card and DDC Card with RS-232 cable.
2.Barcode Reader connect with keyboard and PC keyboard port.
3.Connect RS-232 Cable and VA905 with VGA Cable.
4.(when key in DVI DDC information, use VGA transform to DVI port )
5.Connect Power Cord to VA905 Monitor.
4.3 DDC Key In Procedure
1.Run DDC.exe
2.Choose model number and conform the Time then Press “ENTER” key.
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3.When appear the PIC “ choose DDC Card”, Press ALT+2 .Enter DDC 2B test interface.
Choose DDC Card
4.Press F8 to choose corresponding model.DAT(VA905_A.DAT press“ENTER” key) VA905_A means the DDC under analog mode. VA905_D means the DDC under digital mode.
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5.Press F9 enter the download interface
6.Key in the serial number or use the barcode reader to scan the barcode of the monitor, and press “ENTER” key.
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7.The successful picture is as follows. ”Compare EDID :OK! Press any key to continue”.
8.Let VA905 active, then see the information in OSD, it shows ”Serial NO : PTS052101075”
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4.4 check method
Use ViewSonic EDID Editor
Connect the VA905 to PC with VGA Cable. Excute the EDID Editor, then Press Ctrl+F5. If the DDC is correct, you can see the information as follow:
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This chapter provides technicians and people who have an electronic background a primary description about maintaining the product. Moreover, you can get the appropriate operation to solve some complicated problems of component repairing and professional problems.
1. Equipment Needed
- VA905 Monitor
- Philips Screw Driver #101 and #107
- Electronic Hex VA905 VP02
- PC (Personal Computer) with SXGA resolution and sound card / Pattern Generator
2. Main Procedure
Star
Power -on
Power LED ok?
Is display performance ok?
Is function adjustment ok?
Are Speakers all right?
A.Power Circuit Troubleshooting
B.Performance
Troubleshooting
C.Function
Troubleshooting
D.Speakers
Troubleshooting
End
Yes
Yes
Yes
Yes
No
No
No
No
6. Troubleshooting Flow Chart
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2.1 A. Power Circuit Troubleshooting
Start
Change
Power Board
Change
Main Board
End
Yes
No
Yes
2.2 B. Performance Troubleshooting
Start
Is screen black?
Change
Power Board
Change
Main Board
Change
LCD Panel
Is screen white?
Replug
or Change
FPC Cable
Change
Main Board
Abnormal Color?
Change
Main Board
Change
LCD Panel
1
Yes
No
No
YesYesYes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Change
Main Board
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1
Is LCD Line
defective?
Mura?
Is screen scrolling?
Bad Uniformity?
Is screen flickering?
Ghostimage?
Have line bar or
noise?
End
Change LCD
Panel
Change LCD
Panel
Change
VGACable
Change
Main
Board
Change
Main
Board
Change
LCD Panel
Change
Power Board
Change
LCD Panel
Adjust"Fine Tune""Sharp ness"or"Auto
Adjustment"
Change
Main
Board
Refer
to
Notice
1
Adjust"Fine
Tune""Sharpn
ess"or"Auto
Adjustment"
Refer
to
Notice
2
Change
Main
Board
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes Yes
Yes
Yes
Yes
Yes
YesYes Yes Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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Notice:
1. Make sure VGA cable connected to PC directly, not via anything like “Data transfer” or “Distribution” ……After this action if Ghost image disappears, go to “Yes”; else, go to “No.”
2. Check the compatibility on the computer. If it is compatibility problem, feedback the information to ViewSonic; else, go to “No.”
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2.3 C. Function Troubleshooting
No
Yes
Start
Change
Control Board
Change
Main Board
End
Yes
2.4 D. Speakers Troubleshooting
Start
Change
Speakers
Change
Power Board
End
No
YesYes
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Rev: 1a
Serial No. Prefix: PTS
Item ECR/ECN ViewSonic P/N Ref. P/N Location Universal number# Q'ty
1
Accessories:
POWER CORD USA WALL 1.83M BLACK A-PC-0106-0121 2427130046 P951 1
2
PCB ASS'Y BLOCK (CON) B-00003188 6202-7998334601 1
3
PCB ASS'Y BLOCK (MAIN) B-00003189 6201-7998374621 1
4
PCB ASS'Y BLOCK (POWER) B-00003190 6204-7998374621 1
5
BEZEL ASS'Y JT198QP VA905 ABS94HB PS-7604B C-00003175 2603307769 1
6
CABI BACK ASSY JT198QP DVI ABS94HB BLACK C-00003176 2603407578 1
7
DUST COVER JT178WP/ABS 94HB BLACK C C-00003186 2027258102 6B04 1
8
FRONT BEZEL JT198QP VA905 ABS94HB PS-7604B C-00003177 2024267706 1F01 1
9
I/O CABLE D15/D15 20276(3+6) 1.83M BLACK A-VC-0101-0386 2427501187 P961 1
10
I/O CABLE DVI/DVI 20276(3+6) 1.83M BLACK CB-00003178 2427501189 P971 1
11
CD-OWNER GUIDE VA905 WIZARD HSD VS10805 DC-00003179 2438501187 6P80 1
12
GUARANT CARD VIEWSONIC VA905 QSG DC-00003180 2002310472 6P84 1
13
LCD PANEL RA HSD190ME12-A02 (A-) 12ms HSD E-00003181 2212006305 V901 1
14
LCD PANEL RB HSD190ME12-A02 (A) 12ms HSD E-00003182 2212006303 V901 1
15
LCD PANEL RC HSD190ME12-A04 (A-) 12ms HSD E-00003181 2212006305 V901 1
16
LCD PANEL RD HSD190ME12-A04 (A) 12ms HSD E-00003182 2212006303 V901 1
17
CARTON BOX VIEWSONIC VA905 VS10805 P-00003183 2011120029 6P01 1
18
POLYETHY BAG 250mmx350mmxt0.3 ADD>PE-LD< M-MS-0808-1316 2013222536 6P75 6P85 1
19
POLYETHY BAG 90CMX75CMX0.02t PE-LD M-MS-0808-1317 2013053000 6P60 1
20
POLYFOAM JT198DP EPS (L) P-00003184 2012179000 6P20 1
21
POLYFOAM JT198DP EPS (R) P-00003185 2012179100 6P21 1
22
Plastics:
STAND JT198DP ABS94HB #4001 BLACK PL-00003187 2028258702 5B08 1
Cabinets:
Packing Material:
Board Assembly:
Documentation:
Cables:
RECOMMENDED SPARE PARTS LIST (VA905-1 for "Hanstarr (12ms) Panels")
Description
Electronic Components:
ViewSonic Model Number: VS10805-1W
7. Recommended Spare Parts List
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Rev: 1a
Item ViewSonic P/N Ref. P/N Location Q'ty
1 C-00003177 2024267706 FRONT BEZEL JT198QP VA905 ABS94HB PS-7604B 1F01 1 2 #N/A 2053753501 LED INDIC.-PWR JT178WP/PMMA 94HB 1F02 1 3 #N/A 2044266002 FUNCTION KEY JT178W /ABS 94HB PS-7604B 1F03 1 4 M-MS-0808-9733 2051352300 NAME PLATE VIEWSONIC E015-007 3-BIRD LOGO 1F04 1 5 C-00003191 2022263602 CABI BACK JT198QP DVI ABS94HB BLACK 2C01 1 6 M-BK-0805-0070 2071869400 BRACKET,FIX METAL PLATE 1.0MM KENSINGTON 2C02 1 7 HW-00003031 2071872900 BRACKET,FIX JT198QP SECC 0.8T WALL MOUNT 2C03 1 8 C-00003192 2028553002 NECK 178W/ARM UP ABS 94HB BLACK C 5B01 1
9 HW-00003193 2106656900 HINGE JT198QP -1'~20' 5B02 1 10 #N/A 2084740122 SCREW,BND T+ M4X12(BND T+) 5B03 5B07 8 11 C-00003195 2028553102 NECK 178W/ARM DOWN ABS 94HB BLACK C 5B04 1 12 HW-00003196 2105251800 SPRING PLATE JT178WP/EMI PLATE 5B05 1 13 M-SCW-0824-0812 2084730062 SCREW,BND T+ M3X6(BND T+) 5B06 5B10 6B02 8 14 PL-00003187 2028258702 STAND JT198DP ABS94HB #4001 BLACK 5B08 1 15 HW-00003198 2071973400 METAL FITTG JT198DP SECC 1.0T STAND 5B09 1 16 PL-PD-0714-0113 2039819301 FOOT PAD RUBBER O20*2TMM SQUARE GRAIN 5B11 4 17 #N/A 2055613446 LABEL VA905 INSTALL STAND STICKER 5B12 1 18 HW-00003199 2071974100 METAL FITTG JT198QP SECC 0.8T DVI 198-1 5F01 1 19 M-SCW-0824-6941 2080005000 SCREW,SPE M3*8 CAMERA SCREW NI NY10K 5F02 2 20 M-SCW-0824-6942 2080005100 SCREW,SPE M3*6 CANERA SCREW BLACK NY10K 5F03 2 21 #N/A 2061253600 SPONGE 76*42*1 EVA 5F04 5F05 2 22 M-00003200 2061252400 SPONGE 36X23X3t EVA 5F06 5F07 2 23 M-SCW-0824-6719 2082630062 SCREW M3X6 P=0.5 5F09 6F02 6F06 8 24 #N/A 2061454900 BUSHING 10*10*8t RUBBER 5F10 2 25 M-SCW-0824-6943 2082740084 SCREW,BND+ BMS 4X8 BLACK 6B01 5 26 M-SCW-0824-6722 2087340106 SCREW,B SPW+ 4X10(+)SWRM-3 ZMC2-C 6B03 4 27 C-00003186 2027258102 DUST COVER JT178WP/ABS 94HB BLACK C 6B04 1 28 M-SCW-0824-0811 2080003700 SCREW,SPE 1SZZTER001A M3*6L MSWR17/FZMY1 6F01 6 29 #N/A 2080040062 SCREW,SPE M4*8 PMS-3/W 6F04 1 30 HW-00003203 2071673700 SHIELD PLATE JT198QP SPTE 0.3T DVI 198-1 6F05 1 31 M-SCW-0824-6945 2080004000 SCREW,SPE STAND-OFF HEX #4-40UNC H5*5*7L 6F07 6F08 4 32 P-00003183 2011120029 CARTON BOX VIEWSONIC VA905 VS10805 6P01 1 33 #N/A 2055632120 LABEL VA905 VS10805 (M) HSD 6P02 1 34 #N/A 2055636035 LABEL VA905 VS10805 SMALL LABEL 6P05 1 35 M-LB-0813-0856 2055613379 LABEL ViewSonic CONTAINER LABEL 6P11 21 36 M-LB-0813-0530 2055617101 LABEL 10*20 HI-POT TESTED 0K 6P13 1 37 M-LB-0813-0959 2055613392 LABEL VSC HIGH VOLTAGE WARNING LABEL 6P14 1 38 P-00003184 2012179000 POLYFOAM JT198DP EPS (L) 6P20 1 39 P-00003185 2012179100 POLYFOAM JT198DP EPS (R) 6P21 1 40 #N/A 2055134047 LABEL VA905 VS10805 HSD 6P50 1 41 M-LB-0813-0528 2055103400 LABEL JK0936F WEN 6P52 1 42 M-LB-0813-0002 2056603050 SERIAL LABEL VIEWSONIC LCD SERIAL LABEL 6P55 6P54 6P51 3 43 M-MS-0808-1317 2013053000 POLYETHY BAG 90CMX75CMX0.02t PE-LD 6P60 1 44 DC-00003179 2438501187 CD-OWNER GUIDE VA905 WIZARD HSD VS10805 6P80 1 45 DC-00003180 2002310472 GUARANT CARD VIEWSONIC VA905 QSG 6P84 1 46 M-MS-0808-1316 2013222536 POLYETHY BAG 250mmx350mmxt0.3 ADD>PE-LD< 6P85 6P75 2 47 #N/A 2072250103 HEAT SINK JC186H AL6063S-T5 AUDIO 9H01 1 48 #N/A 2072261400 HEAT SINK JT178QP AL6063S-75 30*15 9H02 1 49 #N/A 2105251400 SPRING PLATE SPTE T=0.4MM (GROUND PLATE) 9H11 5 50 M-SCW-0824-0285 2084730082 SCREW,BND T+ M3X8(BND T+) 9S01 9S02 2 51 #N/A 2700137700 SET ASS'Y JT198QP46D(2) B011 1 52 #N/A 2700537700 ACCESSORY ASS'Y JT198QP46D(2) B012 1 53 #N/A 2700637700 PACKING ASS'Y JT198QP46D(2) B013 1 54 #N/A 2701137700 PCB ASS'Y JT198QP46D(2) B021 1 55 #N/A 2701537700 FRONT ASS'Y JT198QP46D(2) B022 1 56 #N/A 2701637700 FINAL ASS'Y JT198QP46D(2) B023 1 57 #N/A 2702134100 PCB-MAIN JT198EP46(1) BA31 1 58 #N/A 2704134100 AUTO INSERT-MAIN JT198EP46(1) BA41 1 59 #N/A 2710134100 MANUAL INSERT-MAIN JT198EP46(1) BA42 1 60 #N/A 2706134100 SMT-MAIN JT198EP46(1) BA51 1 61 #N/A 2720134100 V-TYPE-MAIN JT198EP46(1) BA52 1 62 #N/A 2702234700 PCB-CON JT198QP46 BB31 1 63 #N/A 2704234700 AUTO INSERT-CON JT198QP46 BB41 1 64 #N/A 2710634700 MANUAL INSERT-CON JT198QP46 BB42 1 65 #N/A 2720634700 V-TYPE-CON JT198QP46 BB52 1 66 #N/A 2702337700 PCB POWER JT198QP46D(2) BC31 1 67 #N/A 2704337700 AUTO INSERT-POWER JT198QP46D(2) BC41 1 68 #N/A 2711137700 MANUAL INSERT-POWER JT198QP46D(2) BC42 1 69 #N/A 2711237700 PROCESS-POWER JT198QP46D(2) BC43 1 70 #N/A 2721137700 V-TYPE-POWER JT198QP46D(2) BC52 1 71 #N/A 2721237700 H-TYPE-POWER JT198QP46D(2) BC53 1 72 #N/A 2708637700 CABI BACK JT198QP46D(2) BN31 1 73 #N/A 2718637700 STAND ASS'Y JT198QP46D(2) BN32 1 74 #N/A 2719037700 FINAL OTHER JT198QP46D(2) BN39 1 75 #N/A 2708137700 FRONT BEZEL JT198QP46D(2) BT31 1 76 #N/A 2718137700 LCD PANEL ASS'Y JT198QP46D(2) BT32 1
ViewSonic Model Number: VS10805-1W
Description
BOM LIST (VA905-1)
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Item ViewSonic P/N Ref. P/N Location Q'ty
Description
77 #N/A 2718537700 FRONT OTHER JT198QP46D(2) BT39 1
78 #N/A 2333610613 CAP,ELE 105'C EC 10u/ 50V 5*11 P=2.5 T
C101 C141 C146 C150 C152 C158 C193
7
79 #N/A 2333347613 CAP,ELE 105'C EC 47u/ 16V 5*11 P=2.5 T
C104 C109 C110 C132 C191 C250
C251
7
80 #N/A 2336322791 CAP,MINI ELE 105'C EC 220u/ 16V 8*7 P=5.0 T C105 C165 2
81 E-C-0404-3815 2346410496 CAP,CHIP 85'C CS 0603/Y5V/50V 0.1u Z T
C106 C107 C111 C112 C130 C131 C133 C134 C135 C136 C137 C138 C139 C142 C143 C144 C145 C147 C148 C149 C151 C153 C154 C157 C159 C167 C170 C175 C192 C224 R173
31
82 E-R-0405-6411 2253210396 RES,CHIP 1/10W RC 0603 1/10W 10Kohm J T
C108 R134 R136 R137 R169 R186 R187 R188 R189 R190 R191 R192 R193 R194 R195 R196 R197 R198 R199 R205 R212 R215 R239
23
83 #N/A 2346247396 CAP,CHIP 125'C CS 0603/X7R/25V 0.047u K T
C115 RA C117 RA C118 RA C121 RA C122 RA C124 RA
6
84 #N/A 2346147396 CAP,CHIP 125'C CS 0603/X7R/50V 0.047u K T
C115 R C117 RB C118 RB C121 RB C122 RB C124 RB
6
85 E-C-0404-4224 2341147096 CAP,CHIP 125'C CS 0603/COG/50V 47p J T
C125 C126 C128 C129
4
86 E-C-0404-4423 2341122096 CAP,CHIP 125'C CS 0603/COG/50V 22p J T
C155 C156 C172 C174 C231 C232
6
87 #N/A 2333622513 CAP,ELE 105'C EC 2.2u/ 50V 5*11 P=2.5 T C173 1
88 E-C-0404-3816 2346110296 CAP,CHIP 125'C CS 0603/X7R/50V 1000p K T
C177 C178 C179 C80 C181 C182 C183
7
89 E-C-0404-4241 2333347791 CAP,ELE 105'C EC 470u/ 16V 10*12.5 P=5.0 T C601 C605 C606 3 90 E-C-0404-1833 2333622691 CAP,ELE 105'C EC 22u/ 50V 5*11 P=5.0 T C602 1 91 E-C-0404-1424 2333610591 CAP,ELE 105'C EC 1u/ 50V 5*11 P=5.0 T C603 C604 2 92 #N/A 2333322791 CAP,ELE 105'C EC 220u/ 16V 8*11 P=5.0 T C610 1 93 E-C-0404-1838 2333610691 CAP,ELE 105'C EC 10u/ 50V 5*11 P=5.0 T C615 1 94 E-C-0404-4834 2300922401 CAP MTL MINI X2 0.22u/275V P=15.0 K C C801 C804 2 95 E-C-0404-1855 2287247212 CAP,CER Y2 4700p/250V Y5V P=10.0 M K C802 C803 C831 3 96 #N/A 2357510708 EC HI-RIPPLE 105C 400V EC 100u/400V 18*32 P=7.5 S C805 1 97 #N/A 2303210391 CAP,MTL CF93M 0.010UF 250V K T C806 1
98 E-C-0404-1815 2281410491 CAP,CER CC 0.1u/ 50V Y5V P=5.0 Z T
C807 C907 C910 C917 C921 C923 C925
7
99 #N/A 2302010291 CAP,MTL MEF 0.001uF/50V P=5.0 J T C808 C832 2
100 #N/A 2333433691 CAP,ELE 105'C EC 33u/ 25V 5*11 P=5.0 T C809 1 101 #N/A 2333510791 CAP,ELE 105'C EC 100u/ 35V 8*11 P=5.0 T C810 1 102 #N/A 2335210811 CAP,ELE LOW ESR 105'C EC 1000u/ 10V 8*16 P=3.5 C C811 1 103 #N/A 2302010391 CAP,MTL MEF 0.01uF/50V P=5.0 J T C812 C914 2 104 E-C-0404-2262 2285110291 CAP,CER CC 1000P/1KV Y5P P=5.0 K T C813 C820 C821 3
105 E-C-0404-3473 2281410291 CAP,CER CK45F 1000.000PF 50V Z T
C816 C903 C904 C926 C927
5
106 #N/A 2330005801 CAP,MINI ELE EC 1500u/ 16V 10*20 P=5.0 C C822 C823 2 107 #N/A 2335215811 CAP,ELE LOW ESR 105'C EC 1500u/ 10V10*16 P=5.0 C C824 1 108 #N/A 2302010491 CAP,MTL MEF 0.1uF/50V P=5.0 J T C826 1 109 #N/A 2287247200 CAP,CER CK45F 4700.000PF 250VAC M C830 1 110 #N/A 2302047391 CAP,MTL MEF 0.047uF/50V P=5.0 J T C901 C911 C924 3 111 #N/A 2275410001 CAP CER TC 10P/3KV SL P=7.5 J C C902 C916 2 112 #N/A 2275450901 CAP,CER TC 5P/3KV SL P=7.5 J C C905 C918 2 113 #N/A 2335347713 CAP,ELE LOW ESR 105'C EC 470u/ 16V 8*12 P=5.0 T C906 C915 C922 3 114 #N/A 2302039291 CAP,MTL MEF 3900pF/50V P=5.0 J T C908 C919 2 115 #N/A 2302022291 CAP,MTL CF93M 2200.000PF 50V J 1T C909 C920 2 116 E-C-0404-3932 2272127091 CAP,CER TC 27p/50V CH P=5.0 J T C912 1
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Item ViewSonic P/N Ref. P/N Location Q'ty
Description
117 E-C-0404-3470 2272133191 CAP,CER TC 330p/50V CH P=5.0 J T C913 1 118 E-C-0404-2069 2333622591 CAP,ELE 105'C EC 2.2u/ 50V 5*11 P=5.0 T C928 1
119 E-R-0405-6600 2253200096 RES,CHIP 1/10W RC 0603 1/10W 0 ohm J T
D101 L102 L103 L104 R104
5
120 E-D-0403-1667 2364600196 DIODE,SWITCH SMD LL4148 SOD-80 TEMIC
D102 RA D103 RA D104 RA D105 RA D106 RA D107 RA D125 RA
7
121 E-D-0403-1892 2364200896 DIODE,RECT(SMD) BAS32L SOD80C PHILIPS
D102 RB D103 RB D104 RB D105 RB D106 RB D107 RB D125 RB
7
122 E-D-0403-1779 2364503996 DIODE,ZENER SMD BZV55-C5V6 PHILIPS
D108 RA D109 RA D110 RA D111 RA D112 RA D120 RA D121 RA
7
123 E-D-0403-2808 2364505616 DIODE,ZENER SMD TZMC5V6 SOD-80 5.2V~6V VISHAY
D108 RB D109 RB D110 RB D111 RB D112 RB D120 RB D121 RB
7
124 #N/A 2364201896 DIODE,RECT(SMD) BAT54C CHENMKO SOT-23 D113 RB 1 125 #N/A 2364201296 DIODE,RECT(SMD) BAT54C-7 SOT-23 DII D113 RA 1 126 E-R-0405-7116 2253400096 RES,CHIP 1/4 RC 1206 1/4 W 0ohm J T D126 D127 2 127 #N/A 2364202996 DIODE,RECT(SMD) M2 D0-214AC 100V/1A WILLAS D130 RB 1 128 #N/A 2364202796 DIODE,RECT(SMD) GS1B 100V/1A DO-214AC PEC D130 RA 1
129 E-D-0403-0531 2363600195 DIODE,SWITCH 1N4148 DO-35 T
D601 D809 D902 D905 D906 D907 D908 D910 D911 D912 D913 D914 D915 D917 D918 D922 D923
17
130 #N/A 2363703891 LED LED 3f GRN/YEL D701 1
131 E-D-0403-2009 2363227295 DIODE,RECT 2A07 DO-15 1000V/2A TSC
D801 RA D802 RA D803 RA D804 RA
4
132 E-D-0403-1671 2363224295 DIODE,RECT 20KDA60 INTER
D801 RB D802 RB D803 RB D804 RB
4
133 #N/A 2363233795 DIODE,RECT PS2010 2A/1000V DO-15 PEC
D801 RC D802 RC D803 RC D804 RC
4
134 #N/A 2362900895 TRANSIENT VOLTAGE SUPPRESSOR P6KE130A DO-15 WILLAS D805 RB 1 135 #N/A 2362900395 TRANSIENT VOLTAGE SUPPRESSOR P6KE130A DO-15 PEC D805 RA 1 136 E-D-0403-1497 2363221895 DIODE,RECT UF4006G PEC D806 1 137 #N/A 2363601395 DIODE,SWITCH 1U4G 1A/400V PEC D807 RB 1 138 #N/A 2363230795 DIODE,RECT 1H5G WILLAS D807 RA 1 139 #N/A 2363515395 DIODE,ZENER HZ27-2 26.2V-27.6V 0.5W HITACH D808 1 140 #N/A 2363234012 DIODE,RECT SR306 DO-201AD MOSPEC D820 1 141 #N/A 2363303200 DIODE,SCHOTTKY SRF10150C ITO-220 MOSPEC D821 RB 1 142 #N/A 2363300500 DIODE,SCHOTTKY FCH10A15 150V/10A TO-220AB IR D821 RA 1 143 E-D-0403-1500 2363222195 DIODE,RECT SB140 PEC D909 D916 2 144 E-FS-0410-0102 2213125211 FUSE FUSE 2.5A/250V SG501302.5 PICO F801 RB 1 145 E-FS-0410-0009 2213125207 FUSE 21502.5(2.5A) LITTEL F801 RA 1 146 #N/A 2365813696 IC,LINEAR(SMD) AP1117E18A SOT-223 ANACHIP I101 1 147 #N/A 2365809496 IC,LINEAR(SMD) CM1117SCM-3.3V SOT223 CHAMPION I102 RE 1 148 #N/A 2365808896 IC,LINEAR(SMD) L1117L-3.3V NIKO SOT-223 I102 RD 1 149 #N/A 2365808396 IC,LINEAR(SMD) AIC1117-33CY AIC SOT-223 I102 RF 1 150 E-IC-0401-2924 2365808196 IC,LINEAR(SMD) AP1117E-3.3V SOT-223 ATC I102 RC 1 151 #N/A 2365807196 IC,LINEAR(SMD) AMC1117-3.3 SOT-223 ADD I102 RA 1 152 #N/A 2365801496 IC,LINEAR(SMD) RC1117ST-3.3 SOT223 FAIRCHILD I102 RB 1 153 E-IC-0401-2132 2365922496 IC,DIGITAL SMD 74LVC14A PHILIPS SO14 I103 RA 1 154 #N/A 2365921996 IC,DIGITAL SMD SN74LVC14AD TI I103 RB 1 155 #N/A 2365423400 IC,DIGITAL ST24FC21 PSDIP-8 ST I104 RB 1 156 E-IC-0401-2017 2365412600 IC,DIGITAL 24LC21A/P MICROCHIP I104 RA 1 157 E-IC-0450-0041 2365929996 IC,DIGITAL SMD MTV312M64-AJ PLCC44 MYSON I106 1 158 E-IC-0401-2747 2365424300 IC,DIGITAL M24C16-WBN6T PDIP-8 ST I107 RC 1 159 E-IC-0401-2748 2365424000 IC,DIGITAL AM24LC16(PDIP-8L) ATC I107 RB 1 160 E-IC-0401-2015 2365316200 IC,LINEAR 24LC16B DIP-8 MICROCHI I107 RA 1 161 #N/A 2365933796 IC,DIGITAL SMD TSU56AK PQFP-128 Mstar I108 1 162 #N/A 2365329700 IC,LINEAR TDA7496L DIP-20 ST I601 1 163 #N/A 2365330300 IC,LINEAR SG6841D DIP-8 SG I801 1 164 E-PC-0411-0083 2362401800 PHOTO COUPLR TLP621(D4-GR-LF2) TOSHIBA I802 RA 1 165 E-PC-0411-0082 2362401600 PHOTO COUPLR TLP721F(D4-GR) TOSHIBA I802 EB 1
166 #N/A 2365328191 IC,LINEAR AP431VA TO-92 ATC I803 RA I804 RA 2 167 E-IC-0401-2152 2365321991 IC,LINEAR KA431AZTA TO-92 FAIRCHILD I803 RB I804 RB 2
168 E-IC-0401-1270 2365319391 IC,LINEAR TL431CLP TI I803 RC I804 RC 2 169 #N/A 2365327691 IC,LINEAR CM431BCN CHAMPION I803 RD I804 RD 3 170 #N/A 2365335030 LINEAR IC OZ9932D PDIP-8 O2-Micro I901 1
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Item ViewSonic P/N Ref. P/N Location Q'ty
Description
171 #N/A 2365330591 IC,LINEAR L78L05ACZ TO-92 ST I902 RC 1 172 #N/A 2365330491 IC,LINEAR HC78L05 TO-92 HC-SEMI I902 RB 1 173 #N/A 2365330291 IC,LINEAR KA78L05AZ TO-92 FAIRCHILD I902 RA 1 174 M-WR-0828-0460 2428106125 JUMPER 0.6f*12.5mm J601 J603 2
175 M-WR-0828-0478 2428106100 JUMPER 0.6f*10.0mm
J602 J604 J605 J801 J802 J803 J824 J825 J902 J908 J910 R916 R933 R935
14
176 M-WR-0828-0450 2428106075 JUMPER 0.6f *7.5mm
J804 J805 J806 J807 J808 J809 J810 J811 J812 J813 J814 J817 J818 J820 J821 J822 J823 J828 J901 J903 J904 J905 J906 J907 J909 R619 R915
27
177 M-WR-0828-0451 2428106150 JUMPER 0.6f*15.0mm 1 J819 0 178 #N/A 2434325603 SHIELDING TAPE W25*L60*T0.06 (AL) K902 1 179 #N/A 2434420801 AL SHIELDING TAPE W40*L80mm (AL) K903 1 180 E-R-0405-6606 2253233196 RES,CHIP 1/10W RC 0603 1/10W 330 ohm J T L105 L106 2
181 #N/A 2379812156 BEAD,HI-IMPEDANCE Z= 120 ohm( 1MHZ~) 0805 300mA
L107 L109 L110 L111 L112
5
182 #N/A 2379512196 BEAD,HI-CURRENT Z= 120 ohm 0805 I=3.0A L108 1 183 E-L-0407-1606 2379103500 FERRITE CORE 0.5f/3Ts 6*10 L120 1 184 #N/A 2379560086 BEAD,HI-CURRENT Z= 60 ohm 1206 I=3.0A L138 1
185 E-L-0407-0013 2379101495 FERRITE CORE 3.5X9X0.8
L601 L602 L603 L604 L605 L606 L806 L901
8
186 #N/A 2371121301 COIL,CHOKE ET-20 21mH 0.32mm*35Ts L802 L805 2 187 E-L-0407-1533 2371154600 COIL,CHOKE R6*20 5.2UH 0.9mm/145.5Ts L803 1 188 #N/A 2371150903 COIL,CHOKE 5uH 7.8*10 2UEW 0.65mm/12.5Ts L804 1 189 #N/A 2379104400 FERRITE CORE 5*5*2.5 55 ohm 100MHz Min L823 1 190 M-MS-0808-6355 2404301107 CONNECTOR JST PH 8P SIDE P=2.0 OR EQUAL P101 P107 2 191 #N/A 2407430900 SOCKET (D-SUB) DHSB-15FTF7 BLUE(661C) LEOCO P102 1 192 #N/A 2404381107 CONNECTOR CU072SAHDG DVI-D CVILUX P103 RC 1 193 #N/A 2404381106 CONNECTOR 2Ds-0341-001 DVI-D S.E P103 RD 1 194 #N/A 2404381104 CONNECTOR QH11121-FP0 DVI-D FOXCONN P103 RA 1 195 #N/A 2404381101 CONNECTOR 74320-4004 DVI-D MOLEX P103 RB 1 196 #N/A 2404222130 PIN PLUG 2*15P P=2.0 28PIN CUT SIDE P105 1 197 #N/A 2404300003 CONNECTOR JST XH 4P TOP P=2.5 OR EQUAL P601 1 198 #N/A 2405106000 EARPHONE JACK 2SJ-P520-A04 (577C) SINGATRON P603 1 199 M-MS-0808-9359 2427408252 WIRE HARNESS 8P H/B 1061#26 L=250mm P=2.0 P701 1 200 #N/A 2407413300 SOCKET (AC INLET) SC-8R-F15A9 SUPERCOM P801 RB 1 201 #N/A 2407413100 SOCKET (AC INLET) 0711-2-P10-9 INALWAYS P801 RA 1 202 #N/A 2427408121 WIRE HARNESS 8P H/B 1061#24 L=120mm P=2.0 P802 1
203 #N/A 2404380302 CONNECTOR 87210-0236 P=3.5 ACE OR EQUAL P901 P902 P903 P904 4
204 #N/A 2427130123A AC POWER CORD TAIWAN WALL 1.83M BLACK P951 1 205 A-VC-0101-0386 2427501187 I/O CABLE D15/D15 20276(3+6) 1.83M BLACK P961 1 206 CB-00003178 2427501189 I/O CABLE DVI/DVI 20276(3+6) 1.83M BLACK P971 1 207 #N/A 2427430201 WIRE HARNESS 30P H/H 1571#28 200L P=1.0/2.0 P981 1 208 M-FC-0809-0844 2427700016 CABLE EAR 3.5(BLK) 1.83M BLK P984 1 209 #N/A 2427309040 LUG W/WIRE f4.3/TAB0.5 1007#18 BLK 60L P985 1 210 #N/A 2427404004 WIRE HARNESS 4/2+2P H/A 1061#24 L=250 P=2.5 P988 1 211 #N/A 2360501396 FET,P-CH SMD AP2305N SOT-23 APEC Q102 RA 1 212 #N/A 2360501296 FET,P-CH SMD AO3411 SOT-23 ALPHA Q102 RB 1
213 E-Q-0402-1180 2360301296 XISTOR,NPN R SMD MMBT3904 SOT-23 DIODES Q103 RA Q104 RA 2 214 E-Q-0402-1624 2360301696 XISTOR,NPN R SMD PMBS3904 SOT-23 PHILIPS Q103 RB Q104 RB 2
215 E-Q-0402-1608 2360300896 XISTOR,NPN R SMD MMBT3904 SOT-23 FAIRCHILD Q103 RC Q104 RC 2 216 E-Q-0402-1607 2360100596 XISTOR,PNP R SMD MMBT3906 SOT-23 FAIRCHILD
Q105 RA Q106 RA Q108 RA Q109 RA
4
217 #N/A 2360100696 XISTOR,PNP R SMD PMBS3906 SOT-23 PHILIPS
Q105 RB Q106 RB Q108 RB Q109 RB
4
218 E-Q-0402-1607 2360100796 XISTOR,PNP R SMD MMBT3906 SOT-23 DIODES
Q105 RC Q106 RC Q108 RC Q109 RC
4
219 E-Q-0402-0718 2361316191 XISTOR,NPN R 2PC945P PHILIPS Q601 RA 1 220 E-Q-0402-0555 2361313691 XISTOR,NPN R KSC945CGTA TO-92 FAIRCHILD Q601 RB 1 221 E-Q-0402-0428 2361302591 XISTOR,NPN R 2SC945(P) TO-92 NEC Q601 RC 1 222 #N/A 2361611200 FET,N-CH AP04N70BF-A TO-220FM APEC Q801 RA 1 223 #N/A 2361610900 FET,N-CH AP04N70BF-H 700V TO-220FM APEC Q801 RB 1 224 E-Q-0402-0839 2361111191 XISTOR,PNP R 2SA1020(Y) TO-92 TOSHIBA Q802 1
225 #N/A 2361609891 FET,N-CH 2N7000TA TO-92 FAIRCHILD
Q901 Q907 Q908 Q909 Q910 Q913
6
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Item ViewSonic P/N Ref. P/N Location Q'ty
Description
226 E-00001012 2361611500 FET,N-CH AP9977GJ(T-TYPE) TO-251 APEC
Q905 RA Q906 RA Q911 RA Q912 RA
4
227 E-00001011 2361611100 FET,N-CH AOU402 T0-251 AO
Q905 RB Q906 RB Q911 RB Q912 RB
4
228 E-R-0405-6410 2253210296 RES,CHIP 1/10W RC 0603 1/10W 1Kohm J T
R101 R102 R206 R211
4
229 E-R-0405-6419 2253247296 RES,CHIP 1/10W RC 0603 1/10W 4.7Kohm J T
R103 R159 R160 R168 R176 R177 R202 R218 R219
9
230 E-R-0405-6409 2253210196 RES,CHIP 1/10W RC 0603 1/10W 100 ohm J T
R106 R112 R114 R115 R118 R119 R121 R132 R133 R135 R162 R174 R175 R180 R181 R182 R183 R184 R250
19
231 #N/A 2251275096 RES,CHIP 1/10 RC 0603 1/10W 75 ohm F T R113 R116 R120 3
232 E-R-0405-6604 2253222296 RES,CHIP 1/10W RC 0603 1/10W 2.2Kohm J T
R124 R125 R161 R200
4
233 E-R-0405-6603 2253222096 RES,CHIP 1/10W RC 0603 1/10W 22 ohm J T R126 R127 2 234 #N/A 2251239006 RES,CHIP 1/10 RC 0603 1/10W 390 ohm F T R140 1 235 E-R-0405-6601 2253210596 RES,CHIP 1/10W RC 0603 1/10W 1Mohm J T R141 R158 2 236 E-R-0405-6418 2253247196 RES,CHIP 1/10W RC 0603 1/10W 470 ohm J T R178 R179 2 237 #N/A 2253215296 RES,CHIP 1/10W RC 0603 1/10W 1.5Kohm J T R204 1 238 E-R-0405-7000 2253222196 RES,CHIP 1/10W RC 0603 1/10W 220 ohm J T R213 1 239 E-R-0405-3221 2233410495 RES,CBN 1/4 S RD 1/4WS 100Kohm J T52 R601 1 240 E-R-0405-3442 2233439295 RES,CBN 1/4 S RD 1/4WS 3.90K J T52 MINI R602 1
241 E-R-0405-3214 2233410395 RES,CBN 1/4 S RD 1/4WS 10Kohm J T52
R610 R611 R612 R613 R902 R938
6
242 E-R-0405-3211 2233447295 RES,CBN 1/4 S RD 1/4WS 4.70K J T52 MINI R620 1 243 E-R-0405-2367 2233422295 RES,CBN 1/4 S RD 1/4WS 2.2Kohm J T52 R621 1
244 E-R-0405-1757 2233410195 RES,CBN 1/4 S RD 1/4WS 100 ohm J T52
R622 R623 R829 R908
4
245 E-TH-0416-0042 2229201212 THERMISTOR,PTH SCK-103 10+-20% 3A THINKING R802 1 246 E-R-0405-5177 2232610595 RES,CBN 1/2 RD 1/2W 1Mohm J T52 R803 1 247 #N/A 2233691495 RES,CBN 1/2WS RD 1/2WS 910Kohm J T52 R804 1 248 E-R-0405-4745 2233462495 RES,CBN 1/4 S RD 1/4WS 620.00K J T52 MINI R805 1 249 E-R-0405-2725 2233410095 RES,CBN 1/4 S RD 1/4WS 10 ohm J T52 R807 1 250 E-R-0405-2818 2239224325 RES,PRE 1/4 S RN 1/4WS 24.3Kohm F T R808 R824 2 251 E-R-0405-3216 2233447095 RES,CBN 1/4 S RD 1/4WS 47.00 J T52 MINI R809 1 252 #N/A 2235427806 RES,MTL 1 RS 1W 0.27 ohm J P=7.0 R811 R812 2 253 E-R-0405-3215 2233447195 RES,CBN 1/4 S RD 1/4WS 470.00 J T52 MINI R816 1 254 E-R-0405-0718 2232610095 RES,CBN 1/2 RD 1/2W 10.00 J T52 MINI R820 R821 2 255 E-R-0405-3235 2233410295 RES,CBN 1/4 S RD 1/4WS 1Kohm J T52 R823 1 256 #N/A 2239213025 RES,PRE 1/4 S RN 1/4WS 13Kohm F T52 R825 1 257 E-R-0405-1768 2233433395 RES,CBN 1/4 S RD 1/4WS 33Kohm J T52 R826 1 258 #N/A 2235647013 RES,MTL 3 RS 3WS 47ohm J P=20.0 R827 1 259 #N/A 2239282525 RES,PRE 1/4 S RN 1/4WS 82.5Kohm F T R828 R926 2 260 E-R-0405-0748 2239220025 RES,PRE 1/4 S RN 1/4WS 20.00K F T52 MINI R830 1 261 #N/A 2239211035 RES,PRE 1/4 S RN 1/4WS 110.00K F T52 MINI R831 R923 2 262 E-R-0405-3526 2233427195 RES,CBN 1/4 S RD 1/4WS 270.00 J T52 MINI R832 R913 R917 3 263 #N/A 2233610595 RES,CBN 1/2WS RD 1/2WS 1Mohm J T52 R833 R834 2 264 #N/A 2242315595 HIGH VOLTAGE RESISTOR RD 1/2W 1.50M J R905 R925 2
265 #N/A 2232410095 RES,CBN 1/4 RD 1/4W 10 ohm J T
R906 R907 R911 R912
4
266 E-R-0405-0727 2239222015 RES,PRE 1/4 S RN 1/4WS 2.2Kohm F T52 R909 R927 2 267 #N/A 2239268105 RES,PRE 1/4 S RN 1/4WS 681 ohm F T R914 R932 2 268 E-R-0405-3213 2233410595 RES,CBN 1/4 S RD 1/4WS 1.00M J T52 MINI R918 R924 R934 3
269 #N/A 2239290905 RES,PRE 1/4 S RN 1/4WS 909 ohm F T
R919 R920 R936 R937
4
270 E-R-0405-6218 2233451295 RES,CBN 1/4 S RD 1/4WS 5.10K J T52 MINI R921 R930 2 271 #N/A 2233451595 RES,CBN 1/4 S RD 1/4WS 5.1Mohm J T R922 1 272 #N/A 2239251125 RES,PRE 1/4 S RN 1/4WS 51.1Kohm F T R929 1
273 #N/A 2403702513 SWITCH,TACT TSTA-2 4.3mm 160g HUA JIE
S702 S703 S704 S705 S706
5
274 #N/A 2407200991 HOLDER,FUSE CQ-05T (5mm DIA FUSE) CONQUER
S802 RA S803 RA
2
275 M-MS-0808-1313 2407200791 HOLDER,FUSE FC-05C S802 RB S803 RB 2 276 #N/A 2374228006 XFORMER,POWR ER-28 840uH 0.36mm/23Ts T801 1 277 #N/A 2374300800 XFORMER INVERTER EEL-19 18/2000Ts 0.1*20/0.06mm T901 T902 2 278 #N/A 2202515700 PCB MULTILAYER T198AP M/B FR4*2 100*100 V1.00 U001 1 279 #N/A 2202128800 PC BOARD JT178WP K/B FR1 140*16 V1.00 U701 1
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Item ViewSonic P/N Ref. P/N Location Q'ty
Description
280 #N/A 2202130000 PC BOARD T198AP66 P/B FR1 196*167 U801 1 281 E-00003181 2212006305 LCD PANEL HSD190ME12-A02 (A-) 12ms HSD V901 RB 1 282 E-00003182 2212006303 LCD PANEL HSD190ME12-A02 (A) 12ms HSD V901 RA 1 283 #N/A 2391301081 SPEAKER ASS'Y 1W 8ohm 52*19.5*14 (R) W601 1 284 #N/A 2391301082 SPEAKER ASS'Y 1W 8ohm 52*19.5*14 (L) W602 1 285 E-X-0415-0111 2369102901 XTAL,OSC 14.31818MHZ/49US 30pf/0.1mW X101 1 286 E-X-0415-0119 2369103601 XTAL,OSC 12.000MHZ/49US 0.1mW/30pF X102 1
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NOTE.1
FIG.1
POWER PCB ASS'Y
FIG.1
KEYPAD PCB ASS'Y
FIG.2
1
MAIN PCB ASS'Y
4
19
W601
20
W602
15
X4
13
12
14
X4
6
5
P985
10
11
X4
7
X4
8
9
16
21
X2
18
X2
X2
17
X4
27
26 X6
28
29
X2
30
X2
31
X2
2
3
22
X5
23
X3
24
X4
25
V901
NOTE.1
FIG.2
32
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8. Exploded Diagram and Spare Parts List
Page 47
Rev: 1a
Item ViewSonic P/N Ref. P/N Q'ty
1 C-00003175 2603307769 FRONT BEZEL JT198QP VA905 ABS94HB PS-7604B 1 2 C-00003191 2022263602 CABI BACK JT198QP DVI ABS94HB BLACK 1 3 M-BK-0805-0070 2071869400 BRACKET,FIX METAL PLATE 1.0MM KENSINGTON 1 4 HW-00003031 2071872900 BRACKET,FIX JT198QP SECC 0.8T WALL MOUNT 1 5 C-00003192 2028553002 NECK 178W/ARM UP ABS 94HB BLACK C 1 6 HW-00003193 2106656900 HINGE JT198QP -1'~20' 1 7 HW-00003194 2084740122 SCREW,BND T+ M4X12(BND T+) 4 8 C-00003195 2028553102 NECK 178W/ARM DOWN ABS 94HB BLACK C 1
9 HW-00003196 2105251800 SPRING PLATE JT178WP/EMI PLATE 1 10 M-SCW-0824-0812 2084730062 SCREW,BND T+ M3X6(BND T+) 1 11 HW-00003194 2084740122 SCREW,BND T+ M4X12(BND T+) 4 12
PL-00003187
2028258702 STAND JT198DP ABS94HB #4001 BLACK 1 13 HW-00003198 2071973400 METAL FITTG JT198DP SECC 1.0T STAND 1 14 M-SCW-0824-0812 2084730062 SCREW,BND T+ M3X6(BND T+) 4 15 PL-PD-0714-0113 2039819301 FOOT PAD RUBBER O20*2TMM SQUARE GRAIN 4 16 HW-00003199 2071974100 METAL FITTG JT198QP SECC 0.8T DVI 198-1 1 17 M-SCW-0824-6941 2080005000 SCREW,SPE M3*8 CAMERA SCREW NI NY10K 2 18 M-SCW-0824-6942 2080005100 SCREW,SPE M3*6 CANERA SCREW BLACK NY10K 2 19 M-00003200 2061252400 SPONGE 36X23X3t EVA 1 20 M-00003200 2061252400 SPONGE 36X23X3t EVA 1 21 M-SCW-0824-6719 2082630062 SCREW M3X6 P=0.5 2 22 HW-00003202 2081440084 SCREW,(WASH) M4*8 P=0.7(TOOTH WASHER) BLACK 5 23 M-SCW-0824-0812 2084730062 SCREW,BND T+ M3X6(BND T+) 3 24 M-SCW-0824-6722 2087340106 SCREW,B SPW+ 4X10(+)SWRM-3 ZMC2-C 4 25 C-00003186 2027258102 DUST COVER JT178WP/ABS 94HB BLACK C 1 26 M-SCW-0824-0811 2080003700 SCREW,SPE 1SZZTER001A M3*6L MSWR17/FZMY1 6 27 M-SCW-0824-6719 2082630062 SCREW M3X6 P=0.5 4 28 HW-00003203 2071673700 SHIELD PLATE JT198QP SPTE 0.3T DVI 198-1 1 29 M-SCW-0824-6719 2082630062 SCREW M3X6 P=0.5 2 30 M-SCW-0824-6945 2080004000 SCREW,SPE STAND-OFF HEX #4-40UNC H5*5*7L 2 31 M-SCW-0824-6945 2080004000 SCREW,SPE STAND-OFF HEX #4-40UNC H5*5*7L 2 32 HW-00003204 2071874500 BRACKET,FIX JT198QP SECC 0.8t FOR AC INLET 1
EXPLODED PARTS LIST (VA905-1)
Description
ViewSonic Model Number: VS10805-1W
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Page 48
Packing For Shipping
1. Packing Procedure
1.1 Paste protection film to protect the monitor. (Figure 1)
1.2 Put the monitor in the PE bag and seal the bag with tape. (Figure 2)
1.3 Put the cushions on the monitor. (Figure 3)
1.4 Place the monitor into the carton and then put all the accessories into the carton. At last, close the carton and seal it with tape. (Figure 4)
Figure 3
Figure 1
Figure 2
Figure 4
Power code
Audio Cable
DVI Cable
VGA Cable
Stand Unit
VA905 Monitor
VA905 Monitor
Stand Unit
User’s Guide
Packing For Shipping And Disassembly Procedure
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Page 49
Disassembly Procedure
1. Disassembly of Stand, Hinge unit from Monitor
1.1 Detach Stand Unit from the monitor.
1.2 Remove the Dust cover.
1.3 Unscrew four screws that secure Hinge Unit.
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Page 50
2. Disassembly of Front Cover and Rear Cover
2.1 Unscrew three screws that secure Rear Cover to remove Front Cover.
2.2 Unscrew five screws to remove Rear Cover.
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Page 51
3. Disassembly of Main Board, Power Board, Keypad Board, Speaker and Panel Unit
3.1 Unscrew 2 screws to remove Shielding Plate.
Shielding Plate
3.2. Unscrew 6 screws, 2 hexagon screws and disconnect the wires to remove Main Board.
3.3. Unscrew 6 screws and disconnect the wires to remove Power Board.
Main Board
Power Board
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Page 52
3.4. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides to remove Panel Unit.
Panel Unit
3.5. Unscrew 2 screws to remove Key Pad and remove the Speaker.
Panel Bracket
Keypad Board
Speaker
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9. Block Diagram
AC
12V100v-22
DC-DC
I804
5V
AUDIO
INVERTER
I601 I901
PANEL
DISPLAY
VLCD Q102
3.3V I102
SCALAR
1.8V
I108
Y
I104
EEPROM
VGA DVID
P103
VGA5V
VGA D-SUB
R,G,B INPUT
P102
MCU
5VMCU
Q105,Q106
H,V SYNC
I101
I801
SW power
INPUT
SPEAKER
P601
AUDIO
P102
Q104
P603
SCL,SDA
SYNC
I103
X101
OSC X102
EEPROM
I107
I106,DDC
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FOR PANEL POWER
PC5V
ON / OFF
BRIGHTNESS
VAA1
VCC3V3
5v VAA3
VAA4
5V VCC1V8
5V
VCPU
5V
VLCD
5V
PC5V
5V
5V
12V
12V
Q101 NC
L120
CORE
R207
NC
R217NCR216NCR213
220
+
C191 47uF/16V
R214NC
+
C193
NC
R200 1.8K
D130 GS1B
R201
NC
Q102 AP2305
R204
1.5K
Q103A MMBT3904
R205 10K
R203 NC
R102 1K
R206
1K
Q105
MMBT3906
32
1
I102
RC1117/3.3
1
3
2
4
GNDINVO
VO
C111 .1u
+
C105
220uF/16V
R208 NC 1206
C112 .1u
+
C110 47uF/16V
+
C109 47uF/16V
Q104
MMBT3904
C
B
E
C106 .1u
R101 1K
Q106
MMBT3906
32
1
I101
RC1117/1.8
1
3
2
4
GNDINVO
VO
C107 .1u
R103 4.7K
C108
10K
+
C101
10uF/50V
R106 100
R202
4.7K
+
C104 47uF/16V
P101
9
8
7
6
5
4
3
2
1
R221
2.4K
D126
0
1 2
D127
0
1 2
AdjBACKLITE 4
VAA1 4
VAA2 4
VAA3 4
VCC3V3 4
VCC_1.8 4
onBACKLITE 6
VAA4 4
onPANEL_5V
STANDBY
Volume
10. Schematic Diagrams (VA905)
10.1. DC Power
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DVI CONNECTOR
V Sync
DDCSDA
DDCSCL DDCSCL
DDCSDA
A-BLUE
SCL_VGA SDA_VGA
H SYnc
V SYnc
A-RED
A-GREEN
VGA_CON
DVI_SCL
RX1-IN
RX0+IN R+
RXC-IN
HOT_PLUG
RX2-IN RX2+IN
RX1+IN
G-RX0-IN
DVI_SDA
RXC+IN
DVI5V
3.3V
DVI5V
5V
5V
PC5V
VCC3V3
R239
10K
R126
22
0603
R250 100
R125 2K2
C125 47P
D112 5V6
R119 100
R135 100
R114 100
R120 75
D110 5V6
C118 .047u
R137 10K
D109 5V6
L106
330 OHM
L105
330 OHM
R136 10K
R117 NC
R118 100
D111 5V6
C122 .047u
C119 NC
R113 75
C117 .047u
C123 NC
D113
BAT54C-GS08
C126 47P
R112 100
C121 .047u
R121 100
R132 100
C120 NC
D101 0
R124 2K2
I104
24C21
8 7 6 5
1 2 3 4
VCC VCLK SCL SDA
NC NC NC
GND
R110 NC
C131 .1u
L104 0 OHM
R134 10K
C124 .047u
C116 NC
R115 100
C130
.1u
R130
NC
R116 75
R111
NC
C115 .047u
D107
1N/LL4148
1 2
R133 100
R127
22
0603
D108 5V6
C232 22pF
0603
D120 5V6
D121 5V6
R122
NC
R123
NC
I103A
74LVC14
SO-14
1 2
14
7
I103B
74LVC14
SO-14
3 4
14
7
D104
1N/LL4148
1 2
D106
1N/LL4148
1 2
D103
1N/LL4148
1 2
I103F
74LVC14
SO-14
13 12
14
7
C231 22pF
0603
I103E
74LVC14
SO-14
11 10
14
7
D105
1N/LL4148
1 2
D102
1N/LL4148
1 2
L102 0 OHM
L103 0 OHM
P102
DB15 HD
1 6
2 7
3 8
4 9
5
11
12
13
14
15
10
P103
DVI-D
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24
C1 C2 C3 C4 C5
RX2-
RX2+
GND RX4-
RX4+
SCL
SDA
VS
RX1-
RX1+
GND RX3-
RX3+
5V
GND
HP
RX0-
RX0+
GND RX5-
RX5+
GND
RXC+
RXC-
Shell
Shell
RED GRN
BLU HS
GND
C224 .1u
0603
R104 0
RIN 4
GIN 4
GNDG 4
SOG 4
BIN 4
GNDR 4
ST_DET1 6
GNDB 4
DDCSCL 4,6
B+ 4
G+ 4
CLK- 4
R- 4
ST_DET2 6
G- 4
R+ 4
CLK+ 4
DDCSDA 4,6
HSYNC 4
VSYNC 4
B- 4
10.2. INPUT
52
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PB9 PB8
PA2
PB6
PA5 PA4
PA0
PA1
PA6
PA3
PB1
PB[0..9]
PB0
PA7
PB2
PB4 PB3
PB7
PA9 PA8
PA[0..9]
PB5
VCC3V3 VPO VDDVCC1V8
VAA1
VPLL
VDPLLVAA4
VAD
VAA3
VAA2
VDVI
VAD VDVIVPLL VDPLL
VDVI
VDDVPO
C141
10uF/50V
R139 NC
C132
10uF/50V
C157 .1u
C150
10uF/50V
L109 120
L107 120
L108 120
C154
.1u
C159
.1u
C152
10uF/50V
R140 390/1%
R141 1M
X101
14.318MHZ
C144
.1u
C135
.1u
C143
.1u
I108
TSU56AK
63 60 61
58
62 59
57 37 38
40 41 43 44 46 47 49 50 52
66
67
69 70
71 32
72
73 74
107
55354535111218494
104
114
126188797117
3956362544210208595115
127198696105
116
33
34
108 109 110 111 112 113
118 119 120 121 122 123 124 125 128 1
29 28
30 31
53
65
64
48
106
103
102
68
RIN0 GIN0 SOGIN0
BIN0
RIN0M GIN0M
BIN0M HSYNC0 VSYNC0
R+ R­G+ G­B+ B­CK+ CK­REXT
REFP
REFM
CSZ SDA
SCL HWRESETZ
INT
PWM0 PWM1
LVACKM
AVDD
AVDD_MPLL
AVDD_DVI
BYPASS
AVDD_DVI
VDDP
VDDP
VDDP
VDDP
VDDP
VDDP
VDDP
VDDC
VDDC
VDDC
VDDC
AVSS_DVI
AVSS
AVSS_MPLL
AVSS_LPLL
AVSS_PLL
AVSS_DVI
GNDP
GNDP
GNDP
GNDP
GNDP
GNDP
GNDC
GNDC
GNDC
GNDP
GNDC
XIN
XOUT
LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M
NC/LVB3P NC/LVB3M
NC/LVBCKP
NC/LVBCKM
NC/LVB2P NC/LVB2M NC/LVB1P NC/LVB1M NC/LVB0P NC/LVB0M
DDC1_CLK/GPO8 DDC1_DAT/GPO7
DDCROM_CLK/GPO6 DDCROM_DAT/GPO5
AVDD_PLL
AVDD
AVSS
AVSS_DVI
LVACKP
LVA3M
LVA3P
AVSS
L111
120
C133
.1u
C142
.1u
C134
.1u
C148
.1u
C146
10uF/50V
C153
.1u
L112
120
C147
.1u
C145
.1u
C156 22pF
C158
10uF/50V
C149 .1u
C136
.1u
L110 120
C155 22pF
C138
.1u
R138 NC
C137
.1u
C151
.1u
C139
.1u
VCC1V82
VAA2
VAA3
VAA1
VAA4
VCC3V3
DDCSDA3,6
DDCSCL3
R-3
R+3
CLK-3
B-3
CLK+3
B+3
CSZ6
HWRESET6
INT6
SCL6
SDA6
HSYNC3
GNDB3
VSYNC3
GIN3
GNDR
3
SOG3
BIN3
GNDG3
G+3
G-3
AdjBACKLITE
Volume
PB[0..9] 5
PA[0..9] 5
RIN
10.3. SCALER
53
ViewSonic Corporation Confidential - Do Not Copy VA905
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RXE3-
RXEC-
RXE0-
RXOC-
RXO3+
RXO2-
RXE2-
RXOC+
RXO0+ RXO1+
RXEC+
RXO3-
RXE3+
RXO1-
RXE1-
RXE0+
RXO2+
RXE2+
RXE1+
RXO0-
PA1 RXE0+
PA4 RXE2-
PB5
RXO2+
PA8
RXE3-
PA9
RXE3+
PB8
RXO3-
PA7 RXEC+
PA2 RXE1-
PB3
RXO1+
PB9
RXO3+
PB1
RXO0+
PB7
RXOC+
PA6 RXEC-
PA0
RXE0-
PA5 RXE2+
PB4
RXO2-
PB6 RXOC-
PA3 RXE1+
PB0
RXO0-
PB2
RXO1-
PB[0..9]
PA[0..9]
VLCD
P105
CONN15x2 TO PANEL
1 3
7
19
16
13
11
9
30
28
17
26
23
21
2 4 6
14 18
15
12
10
8
29
27
24
25
22
20
5
PVCC PVCC
GND
RXO0-
RXEC+
RXE2-
RXE1-
RXE0-
RXO3+
RXOC+
RXE3-
RXO2+
GND
RXO1-
PVCC
NC
NC/C
RXE2+ RXE3+
RXEC-
RXE1+
RXE0+
GND
RXO3-
RXOC-
GND
RXO2-
RXO1+
RXO0+
NC
L138 60
C167 .1u
12
C165
220uF/16V
R210 NCR209 NC
PB[0..9]
4
PA[0..9]4
10.4. Panel Interface
54
ViewSonic Corporation Confidential - Do Not Copy VA905
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P106
ORANGE
KEY PAD
GREEN
LED_G
ORG
GREEN
LED_O
LED_G
LED_O
PWR/LED
1
2
PWR/SW PSM/LED
DOWN
UP
VCPU
VCPU
VCPU
VCPU
VCPU
VCPU
VCPU
VCPU 5V
5V
5V
VCPU
C129 47P
12
R220NC
R18910K
R19110K
R19010K
R18810K
R18710K
R18610K
R19210K
R215 10K
R212 10K
I107
24C16
1 2 3 4 5
6
7
8
A0 A1 A2 GND SDA
SCL
WP
VCC
R180 100/0603
R174 100
R176 4K7
R181 100/0603 R182 100/0603
R160 4K7
R183 100/0603 R184 100/0603
C178 1nF
C175 .1u
C177 1nF
C174 22pF
R158
1M
Q109
MMBT3906
3
2
1
C172 22pF
R169 10K
X102
12MHz
R165 NC
R177 4K7
C173
2.2uF/50V
C170 .1u
C179 1nF
R166
NC
R159 4K7
R168 4K7
C176 NC
R211 1K
R172
NC
C181 1nF
12
R162 100
C182 1nF
12
D125 1N/LL4148
C183 1nF
12
C180 1nF
P107
CON8
1
2
3
4
5
6
7
8
R179 470
P109
1 2 3 4
R161
2.2K
R178 470
R173
.1u
Q108
MMBT3906
3
2
1
I106
MTV312M64
12
11
7
19
17 18 20 21 22 23 24 25
3 2 1 42 41 40
33
32
31
30
9
26
27
28 29
810
14 13
4
38
39
5
6
16
15
34
35 36 37
43
44
X1
X2 RESET
INT0/P3.2
P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
P5.0 P5.1 P5.2 P5.3 P5.4 P5.5
P6.7
P6.6
P6.5
P6.4
P6.3
P6.1/AD1
P6.0/AD0
P3.1/TXD P3.0/RXD
VCC
VSS
ISCL/P3.5/T1 ISDA/P3.4/T0
VDD3
DA9/HALFV
DA8/HLFHO
NC
NC
P6.2
P4.2
P5.6
DA7 P4.0 P4.1
HSYNC
VSYNC
R175 100
R167 NC
C128 47P
12
R19410K
R19310K
R2184.7K
R2194.7K
R19610K
R19710K
R19810K
R19910K
R19510K
S706S705
S702
D701
S704
P701
8 HEADER
1234567
8
S703
C192 .1u
C250 47uF/16V
C251 47uF/16V
VCPU2
SCL 4
HWRESET 4 onBACKLITE 2
CSZ 4 SDA 4
STANDBY2
ST_DET13 ST_DET23
DDCSDA 3,4
DDCSCL 3
DOWN UP
MENU
POWER
SELECT
INT
DOWN
UP
MENU
SELECT
POWER
onPANEL_5V 2
10.5. MCU
55
ViewSonic Corporation Confidential - Do Not Copy VA905
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SOLDER SIDE
1
2
3
4
5
VOLUME
MUTE
OUT (R-)
OUT (R+)
OUT (R-)
OUT (L-)
OUT (L-)
OUT (L+)
OUT (L+)
OUT (R+)
12V
D601 NC
R6050
R613 15/3W
R601 15/3W
R604
2.2K
R603 10K
R602
10K/0.25W
+
C604
NC
C605
0.1uF
R606 1K/0.25W
R614 15/3W
C601
0.1uF
C611
0.22uF/100V MEF
C610
0.22uF/100V MEF
C608
0.22uF/100V MEF
C607
0.22uF/100V MEF
L604 3.5X9X0.8
C613
0.22uF/100V MEF
R607
47
R610
47
I601
TDA8944AJ
9
7
6
4
8
11
16
10
12
17
14
15
13
3
2
1
5
IN2-
SGND
IN1+
OUT1+
IN1-
SVR
VCC2
STBY
IN2+
OUT2+
OUT2-
GND2
VOLUME
VCC1
GND1
OUT1-
NC
L605 3.5X9X0.8
C609
4.7nF
C612
4.7nF
SOCKET
P601
TO SPEAER
4 3
2 1
L­L+
R­R+
R608 47
R611
47
+
C603 1000U/16V
S
R
RS
LS
L
P603
AUDIO INPUT (GREEN)
4
5 3
2 1
+
C606 1uF/50V
Q601 2SC945
C602
0.1uF
R618 NC
L601 3.5X9X0.8
L602 3.5X9X0.8 C617
0.22uF/100V MEF
C616
0.22uF/100V MEF
C614
0.22uF/100V MEF
R619 NC
L603 0
10.6. AUDIO
56
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12T
12T
5T
5T
C831
0.1UF/0805
T801
250uH
1
6
10-12
7-9
5
3
2
L805 20mH
D804 FCH30A15
R801
560K /1206
C802
4700PF
+
C813
1500UF/16V
R814
33K1% / 1206
R822
180K 1% /1206
R821
39K 1% /1206
D801 1N4148
I802
TLP621F
4
3
1
2
C803
4700PF
C801
0.33UF
C824
0.33UF
R816
10K 1% / 1206
P802
5 4 3 2
6
1
7
8
9
5V GND Mute Volume
5V
GND
Brigntness
ON/OFF
12V
C806
10nF/250V
L809 BEAD
+
C808
100uF/25V
R840 10 3A
Q807
PMBS3904/SOT23
R802
100K/1W
R803
NA
R807
10/ 1206
R810
0.18/DIP
+
C812
120uF/400V
D802
UF4007
I805
AP431
L803
BEAD
D812 SR504
R805
1 /SMD 1206
L802 BEAD
R841 1.2K
Q801
A09N70I
R847
150K 1%/ 1206
R843
8.2K
C833
10uF/50V
R842
6.8K
C834
220uF/25V
+
C821
1500UF/16V
R833
560K/ 1206
C811
0.1UF/50V
R8443K/0805
R846
3.9K/0805
R845
10K/0805
D811
NA
D803
NA
Q803
2SC945/DIP
Q804
2SC945/DIP
Q808
AP9435K
1
23
C829
22uF/50V
C804
220nF/1206
C809
100PF 1KV
C817
1500uF/16V
R828
68K 1% /0805
R829
12K 1% /0805
R827 NA
R825
82K 1% /0805
R866
27K 1% /0805
R865
NA
R824
0 OHM/0805
R808
680 /0805
Q806
PMBS3906/SOT23
I804
FP5001
54
3
2
1 8
7 6
SCPFB
Comp
Vcc
Vo GND
RT
DTC
C818
0.1UF/0805
Q805
PMBS3904/SOT23
C819 2200PF/1206
Q802
2SC2120/DIP
L811 BEAD
C805
1000PF/ 1206
L812
40uH/DIP
D808
7A3(6.8V)
R823
1K/1206
R819
4.7K/ 1206
R820
47K/ 1206
R818
68K/ 1206
R817
4.7K/ 1206
I801 TEA1533AP =
2
3
1
4 5
6
7
8
GND
Ctrl
Vcc
DEM Sense
Driver
HVS
Drain
+
C816
1500UF/16V
R831
3K 1% /0805
L804 5UH
R826
12K/ 1206
R806
470/ 1206
C828
0.1uF/0805
D805
PG208
D807 PG208
D810 PG208
P801
AC IN 100-240V
L
N
FG
+
C810
22uF/50V
D813
PG208
D806 UF4005
2.5AH/250V
F801
C807 22nF/ 1206
R812
2.43K 1%/ 1206
R813
5.1K 1206
R815
1K/ DIP 1/4WS
C820
0.1UF/1206 R811
9.1K 1%/ 1206
L801 BEAD
D814
5.6V/SMD
D809 18V
I803 TL431
C835
100P/1KV
C823
3300PF
C836
100P/1KV
C838
100P/1KV
C837
100P/1KV
R832
100K1% /0805
C832
2200P/0805
R804
100K/1W
C822
1500UF/16V
TO Audio
TO Audio
TO Audio
TO INVERTER
TO INVERTER
TO INVERTER
10.7. AC Power
57
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Page 61
. .
. .
Q907
MMBT3906/SOT23
R901
10K/0805
D907
DAN217U/SOT23
3 1
2
R917
100K/ 0805
R924 200/ 1%/0805
R910
22/0805
C904
2.2uF/25V/1206
F901
0 OHM/1206
R915 3K,1%/0805
R909
10K/0805
C907 47N/0805
C919
47N/0805
R907
10K/0805
R922
27K,1%/0805
Q901
MMBT3904/SOT23
1
3
2
Q902
2N7002/SOT23
2
13
C903
10P,3KV,5%/DIP
C901
470UF/25V
D905
DAN217U/SOT23
3 1
2
C911
1U/0805
R930
1M/0805
C927
0.1uF/0805
C924
0.1U/0805
R925
1M/0805
R902
180K,1%/0805
D911
1N4148/SMD
D903
5.6V/SMD
C905
5P,3KV,5%/DIP
C909 5P,3KV,5%/DIP
C920
4.7N/0805
P903
SM02B-BHSS-1
1 2
Si4532A/SMD
I903
1
2
3
4 5
6
7
8
D904
DAN217U/SOT23
3 1
2
R905 430K,1%
C910
2.2U
R904 3M,3KV/DIP
R906
10K/0805
C912
0.47U/0805
Q905
2N7002/SOT23
2
13
C908
220P/ X7R 0805
R929 68K,1%/0805
Q906
2N7002/SOT23
2
13
C902
2.2uF/25V/1206
R912
22/0805
R933 10K,1%/0805
C913
10U/0805
R921
22/0805
C914
5.6N 0805
R913 3M,3KV/DIP
R923
100K/0805
Si4532A/SMD
I904
1
2
3
4 5
6
7
8
Si4532A/SMD
I905
1
2
3
4 5
6
7
8
R932
430 1%/0805
D912
DAN217U/SOT23
3 1
2
P902
SM02B-BHSS-1
1 2
P904
SM02B-BHSS-1
1 2
D910
1N4148/SMD
R927 430/ 1%/0805
R926
1M/0805
C925
0.1uF/0805
D913
1N4148/SMD
R931
200/ 1%/0805
D909
1N4148/SMD
T902 EEL-19
20:2400
5 8
2 9
D914
RLZ9.1B
R935
1K/0805
R936 1K/0805
R934
100K/0805
R918
22/0805
R937
0 OHM/1206
C928
2.2uF/25V/1206
C929
2.2uF/25V/1206
R903
10/0805
R911
22/0805
R914
68K,1%/0805
C906
10P,3KV,5%/DIP
C917
2.2U/0805
C918
0.1u/0805
D902
5.6V/SMD
OZ960
I901
OZ960
1 2 3 4 5 6
18 17 16 15 14 138
7
19
9
10
12 11
20
CTIMR OVP ENA SST VDDA GNDA
CT RT
PWRGND
LCT
DIM
LPWMRT1
REF
PDRV_A
FB CMP
PDRV_C NDRV_D
NDRV_B
R920
NA
C921
4.7NF/X7R 0805
C922
3.3NF/X7R 0805
T901 EEL-19
20:2400
5 8
2 9
Si4532A/SMD
I902
1
2
3
4 5
6
7
8
R908
220K,1%/0805
R919
3K,1%/0805
P901
SM02B-BHSS-1
1 2
R916
NA
D906
DAN217U/SOT23
3 1
2
D901
5.6V/SMD
D908
DAN217U/SOT23
3 1
2
C916
3.3NF/X7R 0805
Q904
2N7002/SOT23
2
13
Q903 2N7002/SOT23
2
13
C923
1.5N/0805
C915
4.7NF/XR7 0805
12V
8 ON/OFF
7 Brightness
10.8. INVERTER
58
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Page 62
11.1. MAIN PCB TOP VIEW
11. PCB Layout Diagrams
11.2. MAIN PCB BOTTOM VIEW
59
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11.3. KEYPAD PCB TOP VIEW
11.4. KEYPAD PCB BOTTOM VIEW
60
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11.5. POWER PCB TOP VIEW
61
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Page 65
11.6. POWER PCB BOTTOM VIEW
62
ViewSonic Corporation Confidential - Do Not Copy VA905
Page 66
*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
Readers basic data:
After completing this form, please return it to ViewSonic Quality Assurance
metI tnellecxE dooG riaF daB
.1
.2
.3
tinU riaF daB
in the USA at facsimile
1-909-839-7943.
You may also e-mail any suggestions to the Director, Quality Systems & Processes
(marc.maupin@viewsonic.com)
dooGtnellecxE
Precautions and Safety Notices
1.
8. Exploded Diagram and Exploded Parts List
7. Recommended Spare Parts List
Adjustment Procedure
2. Specification
5.
4. Circuit Description
3.
6. Troubleshooting Flow Chart
Front Panel Function Control Description
9. Block Diagram
10. Schematic Diagrams
11. PCB Layout Diagrams
Service Manual Content
Service Manual Layout
The form and listing
Name: Title: Company:
Add.: Tel: E-mail:
Fax:
A. What do you think about the content of this Service Manual?
B. Are you satisfied with this Service Manual?
C. Do you have any other opinions or suggestions regarding this service manual?
63
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