ViewSonic VS10805, VA905-1 Service Manual

Model No. VS10805

19” Color TFT LCD Display

Service Manual

ViewSonic VA905-1

ViewSonic



381 Brea Canyon Road, Walnut, California 91789 USA - [phone]

(VA905_SM Rev. 1a Jun. 2005)

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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06/16/05

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 Adjust” function on Main Menu to see if it is workable.
The “Auto Image Adjust” function 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.”

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

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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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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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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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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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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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

51

ViewSonic Corporation Confidential - Do Not Copy VA905

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

ViewSonic Corporation Confidential - Do Not Copy VA905

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

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

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

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

ViewSonic Corporation Confidential - Do Not Copy VA905

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

ViewSonic Corporation Confidential - Do Not Copy VA905

. .

. .

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

ViewSonic Corporation Confidential - Do Not Copy VA905

11.1. MAIN PCB TOP VIEW

11. PCB Layout Diagrams

11.2. MAIN PCB BOTTOM VIEW

59

ViewSonic Corporation Confidential - Do Not Copy VA905

11.3. KEYPAD PCB TOP VIEW

11.4. KEYPAD PCB BOTTOM VIEW

60

ViewSonic Corporation Confidential - Do Not Copy VA905

11.5. POWER PCB TOP VIEW

61

ViewSonic Corporation Confidential - Do Not Copy VA905

11.6. POWER PCB BOTTOM VIEW

62

ViewSonic Corporation Confidential - Do Not Copy VA905

*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

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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

([e-mail])

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?

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ViewSonic Corporation Confidential

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Do Not Copy VA905