ViewSonic VA1903wb, VA1903wm, VS11618 Schematic

Service Manual

ViewSonic VA1903wb/VA1903wm

Model No VS11618

19” Color TFT LCD Display

Manufacture Date: Dec-25-06

- 1 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

Copyright Information

Copyright © ViewSonic
Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc.
Microsoft, Windows, Windows NT, and the Windows logo are registered trademarks of
Microsoft Corporation in the United States and other countries.
ViewSonic, the three birds logo, OnView, ViewMatch, and ViewMeter are registered
trademarks of ViewSonic Corporation.
VESA is a registered trademark of the Video Electronics Standards Association. DPMS
and DDC are trademarks of VESA.

ENERGY STAR
(EPA). As an ENERGY STAR
product meets the ENERGY STAR

Disclaimer: ViewSonic Corporation shall not be liable for technical or editorial errors or
omissions contained herein; nor for incidental or consequential damages resulting from
furnishing this material, or the performance or use of this product.
In the interest of continuing product improvement, ViewSonic Corporation reserves the
right to change product specifications without notice. Information in this document may
change without notice.
No part of this document may be copied, reproduced, or transmitted by any means, for any
purpose without prior written permission from ViewSonic Corporation.

Copyright © ViewSonic
may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into

any language or manual or otherwise, without the prior written permission of ViewSonic
Corporation.

®

Corporation, 2006. All rights reserved.

®

is a registered trademark of the U.S. Environmental Protection Agency

®

partner, ViewSonic Corporation has determined that this

®

guidelines for energy efficiency.

®

Corporation, 2006. All rights reserved. No part of this publication

®

Revision History

Revision Date Description of changes Approval

A00 Dec-25-06 Initial Release YG.WANG

- 2 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

TABLE OF CONTENTS

1. Precautions And Safety Notices 4

2. Specification 7

3. Front Panel Control And Indicators 9

4. Circuit Description 15

5. Adjustment Procedure 25

6. Troubleshooting Flow Chart 44

7. Recommended Spare Parts List 45

8. Exploded Diagram And Spare Parts List 60

9. Disassemble Process 64

10. Block Diagram 69

11. Schematic Diagram 70

12. PCB Layout Diagram 79

ViewSonic Corporation

- 3 –

Confidential - Do Not Cop VA1903wb/VA1903wm

1. Precautions And Safety Notices

1.1 SAFETY PRECAUTIONS

This monitor is manufactured and tested on a ground principle that a user’s safety comes
first. However, improper use or installation may cause damage to the monitor as well as
the user. Carefully go over the following WARNINGS before installing and keep this guide
handy.

WARNINGS

．This monitor should be operated only at the correct power sources indicated on the label

on the rear end of the monitor. If you’re unsure of the power supply in your residence,
consult you local dealer or power company.

．Use only the special power adapter that comes with this monitor for power input.

．Do not try to repair the monitor your self as it contains no user-serviceable parts. This

monitor should only be repaired by a qualified technician.

．Do not remove the monitor cabinet. There is high-voltage parts inside that may cause

electric shock to human bodies, even when the power cord is unplugged.

．Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.
．Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable

immediately and consult your service technician.

．Always unplug the monitor before cleaning it .Clean the cabinet with a clean, dry cloth.

Apply non-ammonia based cleaner onto the cloth, not directly onto the glass screen.

．Keep the monitor away from magnetic objects, motors, TV sets, and transformer.
．Do not place heavy objects on the monitor or power cord.

1.2 PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety visual inspections
and the protection afforded by them cannot necessarily be obtained by using replacement
components rated for higher voltages, wattage, etc. Before replacing any of these
components read the parts list in this manual carefully. The use of substitute replacement
parts which do not have the same safety characteristics as specified in the parts list may
create shock, fire ,or other hazards.

1.3 SERVICE NOTES

1. When replacing parts or circuit boards, clamp the lead wires around terminals before
soldering.

2. When replacing a high wattage resistor(more than 1W of metal oxide film resistor) in
circuit board, keep the resistor about 5mm away from circuit board.

3. Keep wires away from high voltage, high temperature components and sharp edges.

4. Keep wires in their original position so as to reduce interference.

5. Usage of this product please refer to also user’s manual.

ViewSonic Corporation

- 4 –

Confidential - Do Not Cop VA1903wb/VA1903wm

1.4 HANDING 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

ViewSonic Corporation

Taking out the monitor by grasping the LCD
panel. That may cause “Mura.”

- 5 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Place the monitor on a clean and soft foam
pad.

Place the monitor on the lap, the panel
surface must be upwards.

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.”

ViewSonic Corporation

- 6 –

Confidential - Do Not Cop VA1903wb/VA1903wm

2. Specification

2.1 PRODUCT SPECIFICATIONS

LCD

Type

19.0” (full 19” wide viewable diagonal area),
TFT(Thin Film Transistor),Active Matrix WXGA+ LCD

Color Filter RGB vertical stripe

Glass Surface Anti-Glate

Input Signal Video Sync

RGB analog(0.7/1.0 Vp-p, 75ohms)
Separate Syic,
Fh:24-82 kHz, Fv:50-75 Hz

Compatibility PC

Macintosh

Resolution Recommended

and supported

Up to 1440 x 900 Non-interlaced
Power Macintosh up to 1440 x 900

1440 x 900 @ 60, 75 Hz
1280 x 1024 @ 60, 75 Hz
1024 x768 @ 60, 70, 72, 75 Hz
800 x 600 @ 56, 60, 72, 75 Hz
640 x 480 @ 60, 75 Hz
720 x 400 @ 70 Hz

Power Voltage 100V~240 VAC, 50/60Hz (auto switch) 1.2A

Display area Full Scan

408.24mm(H) x 255.15mm(V)

16.07”(H) x 10.04”(V)

Operating
conditions

Storage
conditions

Temperature
Humidity
Altitude

Temperature
Humidity
Altitude

32°F to + 104°F( 0°C to + 40°C)
10%C to + 90%(non-condensing)
To 10,000 feet

-4°F to + 104°F( -20°C to + 60°C)
10%C to + 90%(non-condensing)
To 40,000 feet

Weight Physical 10.41b(4.7 kg)

BSMI, CCC, PSB, C-Tick, VCC1,

Regulations

Power saving
modes

On
Off

CE, GS, Ergo, Gost-R/Hygienc, SASO, TCO’03,
UL/cUL, FCC-B, ICES-B, TUV-S, ENERGY STAR

Normal (green LED)
<2W (orange LED)

®

Preset Timing Mode (pre-adjusted to VESA® 1440 x 900 @ 60 Hz)
Warning: Do not set the graphics card in your computer to exceed these refresh rates;

doing so may result in permanent damage to the LCD display.

1

Macintosh computers older than G3 require a ViewSonic® Macintosh adapter. To order an

adapter, contact ViewSonic.

- 7 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

2.2 INTERFACE DESCRIPTION

D-SUB 15 PIN CONNECTOR

15

6

11 15

10

SIGNAL LEVEL

Pin Number Pin Function

1 Red video input

2 Green video input

3 Blue video input

4 No Connection

5 Ground

6 Red video ground

7 Green video ground

8 Blue video ground

9 +5V

10 H/V sync ground

11 No co n nection

12 (SDA)

13 Horizontal sync (Composite sync)

14 Vertical sync

15 (SCL)

ViewSonic Corporation

- 8 –

Confidential - Do Not Cop VA1903wb/VA1903wm

3.

Front Panel Function Controls And Indicators

ViewSonic Corporation

- 9 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Do the following to adjust the display setting:

1. To display the Main Menu, press button [1].

NOTE: All OSD menus and adjustment screens disappear automatically after about 15

seconds. This is adjustable through the OSD timeout setting in the setup menu.

2. To select a control to adjust, press ▲or ▼ to scroll up or down in the Main Menu.

3. After the desired control is selected, press button [2]. A control screen like the one

shown below appears.

The line at the bottom of the screen shows the
current functions of buttons 1 and 2: Exit or
select the Brightness control.

4. To adjust the control, press the up ▲ or▼ down T buttons.

5. To save the adjustments and exit the menu, press button [1] twice.

The following tips may help you optimize your display:

• Adjust the computer's graphics card so that it outputs a 1024 x 768 @ 60Hz video
signal to the LCD display. (Look for instructions on “changing the refresh rate” in the
graphics card's user guide.)

• If necessary, make small adjustments using H. POSITION and V. POSITION until the
screen image is completely visible
should barely touch the illuminated “active area” of the LCD display.)

ViewSonic Corporation

. (The black border around the edge of the screen

- 10 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Main Menu Controls

Adjust the menu items shown below by using the up

Control

Explanation

Auto Image Adjust automatically sizes, centers, and fine tunes the video

signal to eliminate waviness and distortion. Press the [ 2 ] button to obtain a
sharper image.

NOTE: Auto Image Adjust works with most common video cards. If this
function does not work on your LCD display, then lower the video refresh rate
to 60 Hz and set the resolution to its pre-set value.

Contrast adjusts the difference between the image background (black level)
and the foreground (white level).

Brightness adjusts background black level of the screen image.

Audio Adjust（For VA1903wm only）
Volume increases the volume, decreases the volume, and mutes the audio.
Mute temporarily silences audio output.

Color Adjust provides several color adjustment modes, including preset color

temperatures and a User Color mode which allows independent adjustment of
red (R), green (G), and blue (B). The factory setting for this product is 6500K
(6500 Kelvin).

and down buttons.

sRGB-This is quickly becoming the industry standard for color management,
with support being included in many of the latest applications. Enabling this
setting allows the LCD display to more accurately display colors the way they
were originally intended. Enabing the intended. Enabling the sRGB setting
will cause Contrast and Brightness adjustments to be disabled.

9300K-Adds blue to the screen image for cooler white (used in most office
settings with fluorescent lighting).

6500K-Adds red to the screen image for warmer white and richer red.

5400K-Adds green to the screen image for a darker color.

User Color Individual adjustments for red (R), green (G), and blue (B).

ViewSonic Corporation

- 11 –

Confidential - Do Not Cop VA1903wb/VA1903wm

1. To select color (R, G or B) press button [2].

2. To adjust selected color, press

▼

and ▲.
Important: If you select RECALL from the Main Menu when the product is
set to a Preset Timing Mode, colors return to the 6500K factory preset.

Information displays the timing mode (video signal input) coming from the
graphics card in the computer, the LCD model number, the serial number, and

the ViewSonic

®

website URL. See your graphics card’s user guide for
instructions on changing the resolution and refresh rate (vertical frequency).
NOTE: VESA 1280 x 1024 @ 60Hz (recommended) means that the resolution
is 1024 x 768 and the refresh rate is 60 Hertz.

Manual Image Adjust displays the Manual Image Adjust menu.

H. Size (Horizontal Size) adjusts the width of the screen image.

H./V. Position (Horizontal/Vertical Position) moves the screen image left or

right and up or down.

Fine Tune sharpens the focus by aligning text and/or graphics with pixel
boundaries.

ViewSonic Corporation

- 12 –

Confidential - Do Not Cop VA1903wb/VA1903wm

NOTE: Try Auto Image Adjust first.

Sharpness adjusts the clarity and focus of the screen image.

Setup Menu displays the menu shown below:

Language Select allows the user to choose the language used in the menus
and control screens.

Resolution Notice displays the Resolution Notice menu shown below.

Resolution Notice advises the optimal resolution to use.

OSD Position allows the user to move the OSD menus and control screens.

OSD Timeout sets the length of time the OSD screen is displayed. For

example, with a “15 second” setting, if a control is not pushed within 15
seconds, the display screen disappears.

OSD Background allows the user to turn the OSD background On or Off.

Memory Recall returns the adjustments back to factory settings if the display

is operating in a factory Preset Timing Mode listed in the Specifications of this
manual.

Exception: This control does not affect changes made with the User Color
control, Language Select or Power Lock setting.

ViewSonic Corporation

- 13 –

Confidential - Do Not Cop VA1903wb/VA1903wm

SHORT CUTS FUNCTION FROM THE BUTTONS

[1]

Main Menu

[2]

[▼]

[▲]

[▼] + [▲]

[1] + [2]

Input toggle（Analog or Digital；refer to Appendix D）

Contrast adjust

Contrast adjust

recall both of Contrast and Brightness to default

toggle 720x400 and 640x400 mode when input 720x400
or 640x400 mode

[1] + [▼] + [▲] White Balance (Not shown on user’s guide)

[1] + [▼]

[1] + [▲]

Power Lock

OSD Lock

No signal + [2] + [ ] Burning mode

Signal + [2] + [ ] Factory mode

Remark : All the short cuts function are only available while OSD off

ViewSonic Corporation

- 14 –

Confidential - Do Not Cop VA1903wb/VA1903wm

4. Circuit Description

4.1 LCD MONITOR DESCRIPTION
The LCD MONITOR will contain a Main Board, an Power Board, Key Board which

house the flat panel control logic, brightness control logic and DDC.

Monitor Block Diagram

CCFL Drive.

Power Board

(Include: adapter, inverter)

100V-240V

AC-IN

Key Board

4.2 MAIN BOARD BLOCK FUNCTION DESCRIPTION

The main board contains panel control logic, brightness control logic, DDC and DC

convert DC circuit and so on.

R
G
B
H

V
SDA
SCL

EPROM

Main Board

EPROM

Flat Panel and
CCFL backlight

HOST Computer

PWPC board

TSUM16AL-1

OSC

RS232 Connector
For white balance
adjustment in factory
mode

Video signal, DDC

Backlight and Panel

Keyboard

ViewSonic Corporation

- 15 –

Confidential - Do Not Cop VA1903wb/VA1903wm

4.3 PWPC BOARD BLOCK FUNCTION DESCRIPTION

PWPC board combines to adapter and inverter, Adapter which commonly consists
of bridge rectifier and filter, start circuit, PWM control circuit, protection circuits and
convert to 12V, 5V DC voltage by input 90V-240V AC voltage that provide power supply
for each chips in the main board and inverter. Inverter is DC TO AC circuit. It changes
the 12v DC of power supply to about 600-800v AC that drives the backlight. It mostly
consists of starting circuit, PWM controller, DC changing circuit, LC surging circuit,
output circuit and protection circuit etc.

AC input

EMI filter

Bridge
Rectifier
and Filter

Transformer

Rectifier
CMOS

Start Circuit
R931, R904,R938

5V

Lamp

OSC and
Output
Circuit

Feedback
Circuit

PWM

Control IC

Over
Voltage

DC Convert
Circuit

MOSFET
Q805,Q806

PWM
Control IC

Over
Vol tage
Protect

12V

ON/OF

ON/OFF
Control

DIM

CN902

ViewSonic Corporation

- 16 –

Confidential - Do Not Cop VA1903wb/VA1903wm

4.4 INTRODUCTION OF IC

TSUM16AL-1(U401): integrate ADC, OSD, SCALER, MCU, LVDS, convert analog RGB

into digital and room and shrink scaling output to LCD panel.

Pin Diagram:

ViewSonic Corporation

- 17 –

Confidential - Do Not Cop VA1903wb/VA1903wm

PIN Function:

Pin Symbol Description

37 SDO SPI flash serial data output
38 CSZ SPI flash chip select
39 SCK SPI flash serial select
40 SDI SPI flash serial data input
30 DDCA_SDA/RS232_TX DDC data for analog interface; 4mA driving

strength/UART transmitter/GPIO

31 DDCA_SDA/RS232_RX DDC data for analog interface/UART

transmitter/GPIO
84 RST Chip reset; High reset
87 RSTN Chip reset; Low reset
81 VCTRL Regulator control
27 HSYNCO Analog HSYNC input
28 VSYNCO Analog VSYNC input
26 REFP Internal ADC top de-coupling pin
25 REFM Internal ADC bottom de-coupling pin
15 REXT

External resistor 390 ohm to AVDD＿ADC
86 PWM1/GPIO_P25 Pulse Width Modulation Output; 4mA driving

strength/General Purpose Input/Output; 4mA

driving strength
93 PWM0 Pulse Width Modulation Output; 4mA driving

strength/General Purpose Input/Output; 4mA

driving strength
80 BYPASS For External Bypass Capacitor
96 XIN Xin; Crystal Oscillator Input
97 XOUT Xout; Crystal Oscillator Output

8、14、24 AVDD＿ADC

16
98

32、49、56、

75

34、51、66、

AVDD＿PLL

AVDD＿MPLL

VDDP Digital Output Power 3.3V

VDDC Digital Core Power 1.8V

ADC Power 3.3V

PLL Power 3.3V

MPLL Power 3.3V

82

AP1117E33LA (U701): DC power convert, used to 5v convert 3.3v.

AP1117E18LA(U702): DC power convert, used to 5v convert 1.8v.

Pm25LV512A/010A/020/040(U402): The PM25LV010 are 512 Kbit/1 Mbits/2 Mbit/4

Mbit3.0 Volt-only Serial Peripheral Interface(SPI) Flash memories. The devices
are designed to support 33MHz fastest clock rate in the industry in normal read
mode, 100MHz in fast read mode and the bottom 4Kbyte sector into four smaller
1 Kbyte sectors features(except Pm25LV512A), The devices use a single low
voltage, ranging from 2.7 Volt to 3.6 Volt, power supper to perform read, erase

- 18 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

and program operations. The devices can be programmed in standard EPROM
programmers as well.

Pin Diagram:

PIN Descriptions:

Symbol Type Description

CE# INPUT Chip Enable: CE# goes low activates the device’s internal

circuitries for device operation. CE# goes high deselects the
device and switches into standby mode to reduce the power
consumption. When the device is not selected, data will not
be accepted via the serial input pin (SI), and the serial
output pin (SO) will remain in a high impedance state.

SO OUTPUT Serial Data Output

WP# INPUT Write Protect A hardware program/erase protection for all or

partial of memory array. When the WP# pin is pulled t low,
whole or partial of memory array is write protected depends
on the setting of BP2, BP1 and BP0 bits in the Status
Register, When the WP# is pulled high, the devices are not
write protected.

GND Ground

Vcc Device Power Supply

HOLD# INPUT Hold: Pause serial communication with the master device

without resetting the serial sequence.

SCK INPUT Serial Data Clock

SI INPUT Serial Data Input

Circuit Diagram

ViewSonic Corporation

- 19 –

Confidential - Do Not Cop VA1903wb/VA1903wm

TDA7496L(U201): The TDA7496L is a stereo 2W+2W class AB power amplifier,

specially designed for high quality sound, TV and Monitor applications.
Features of the UTC TDA7496L include linear volume control, Stand-by and
mute functions. The function of each pin and the inside circuit diagram are
as follows:

Block Diagram

- 20 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

PIN Function

LD7575 PS (IC901): The LD7575 is a current-mode PWM controller with excellent

power-saving operation. The embedded over voltage protection, over load
protection and the special green-mode control provide the solution for users to
design a high performance power circuit easily and etc. The function of each pin
and the inside circuit diagram are as follows:

ViewSonic Corporation

- 21 –

Confidential - Do Not Cop VA1903wb/VA1903wm

PIN Descriptions:

Pin Name Function

1 RT

This pin is to program the switching frequency. By connection a
resistor to ground to set the switching frequency.

Voltage feedback pin(same as the COMP pin in UC384X), By

2 COMP

connecting a photo-coupler to close the control loop and achieve the

regulation.
3 CS Current sense pin, connect to sense the MOSFET current
4 GND Ground
5 OUT Gate drive output to drive the external MOSFET
6 VCC Supply voltage pin
7 NC Unconnected Pin

Connect this pin to positive of bulk capacitor to provide the startup
8 HV

current for the controller, when Vcc voltage trips the UVLO(on), this

HV loop will be off to save the power loss on the startup circuit.

Block Diagram

OZ9938GN(IC801): The OZ9938 is high performance, cost-effective CCFL controller

designed for driving large-size LCD applications requiring 2 to 6 CCFLs.PWM
control, Has such functions as short-voltage protection, Over-voltage protection,
over-current protection and etc. The function of each pin and the circuit diagram
inside are as follows:

- 22 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

PIN Descriptions:

Pin Names Description

1 DRV1 Drive output

2 VDDA Supply voltage input

3 TIMER Timing capacitor to set striking time and shutdown delay time

4 DIM

Analog dimming or Internal LPWM dimming or external PWM pulse
input for dimming function

5 ISEN Current sense feedback

6 VSEN Voltage sense feedback

7 OVPT Over-voltage/ over-current protection threshold setting pin

8 NC No connection

9 NC No connection

10 ENA ON/OFF control of IC

11 LCT

Timing capacitor to set internal PWM dimming frequency and also a
pin for analog dimming selection

12 SSECMP Capacitor for soft start time and loop compensation

13 CT Timing resistor and capacitor for operation and striking frequency

14 GNDA Ground for analog signals

15 DRV2 Drive output

16 PGND Ground for power paths

ViewSonic Corporation

- 23 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Block Diagram

ViewSonic Corporation

- 24 –

Confidential - Do Not Cop VA1903wb/VA1903wm

5. Adjustment Procedure

5.1 ADJUSTMENT CONDITIONS AND PRECAUTIONS

1. Approximately 30 minutes should be allowed for warm up before proceeding.

2. Adjustments should be undertaken only on those necessary elements since most of them
have been carefully preset at the factory.

3. ESD protection is needed before adjustment.

5.2 MAIN ADJUSTMENTS

NO. FUNCTIONS DESIGNATION

1. White Balance Function Key

2. Geometry Function Key

5.3 ALIGNMENT PROCEDURES

Approximately 30 minutes should be allowed for warm up before proceeding
White-Balance adjustment.

1. Adjust of White Balance

1.)How to do the Chroma-7120 MEM .Channel setting

A、Reference to chroma 7120 user guide
B、Use “ SC” key and “ NEXT” key to modify xyY value and use “ID” key to modify the
TEXT description Following is the procedure to do white-balance adjust

2.)Setting the color temp. You want

A、MEM.CHANNEL9 ( 9300 color):
9300 color temp. parameter is Wx = 0.283 ±0.03;Wy = 0.298 ±0.03;

Y = 250 ±20 cd/m

B、MEM.CHANNEL10 ( 6500 color):

6500 color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03;
Y = 260 ±20 cd/m

C、MEM.CHANNEL 11 ( 5400 color):

5400 color temp. parameter is Wx = 0.335±0.03;Wy = 0.350 ±0.03;
Y = 250 ±20 cd/m

D、MEM.CHANNEL10 ( SRGB color):

6500 color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03;
Y = 220 ±20 cd/m

ViewSonic Corporation

2 ,

2,

2,

2,

- 25 –

Confidential - Do Not Cop VA1903wb/VA1903wm

3.)Into factory mode of VA1903wb/VA1903wm

A、First Power off, then press Switch 2 button along with press Power button will activate

the factory mode, then MCU will do AUTO LEVEL automatically. Meanwhile press
MENU the OSD screen will located at LEFT TOP OF PANEL.

4.)Bias adjustment :

Set the Contrast

Adjust the Brightness

to 70

to 100.

5.)Gain adjustment :
Move cursor to “-F-” and press MENU key

A、Adjust 9300 color-temperature

(1)、Switch the Chroma-7120 to RGB-Mode (with press “MODE” button )
(2)、Switch the MEM. channel to Channel 9 ( with up or down arrow on chroma 7120 )
(3)、The LCD-indicator on chroma 7120 will show x = 0.283 ±0.03, y =0.298 ±0.03,

2

Y = 250 ±20 cd/m

(4)、Adjust the RED of color1 on factory window until chroma 7120 indicator reached

the value R=100

(5)、Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached

the value G=100

(6)、Adjust the BLUE of color1 on factory window until chroma 7120 indicator reached

the value B=100

(7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the

tolerance =100±5

B、Adjust 6500 color-temperature

(1)、Switch the chroma-7120 to RGB-Mode (with press “MODE” button )
(2)、Switch the MEM .channel to Channel 10( with up or down arrow on chroma 7120 )
(3)、The LCD-indicator on chroma 7120 will show x = 0.313 ±0.03, y = 0.329 ±0.03, Y =

2

260 ±20 cd/m

(4)、Adjust the RED of color3 on factory window until chroma 7120 indicator reached

the value R=100

(5)、Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached

the value G=100

(6)、Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached

the value B=100

(7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the

tolerance =100±5

ViewSonic Corporation

- 26 –

Confidential - Do Not Cop VA1903wb/VA1903wm

C、Adjust 5400 color-temperature

(1) Switch the chroma-7120 to RGB-Mode (with press “MODE” button )
(2)、Switch the MEM .channel to Channel 11( with up or down arrow on chroma 7120 )

(3)、The LCD-indicator on chroma 7120 will show x = 0.335 ±0.03, y = 0.350 ±0.03, Y =

2

250 ±20 cd/m

(4)、Adjust the RED of color3 on factory window until chroma 7120 indicator reached the

value R=100

(5)、Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached

the value G=100

(6)、Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached

the value B=100

(7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the

tolerance =100±5

D、Adjust SRGB color-temperature

(1)、Switch the chroma-7120 to RGB-Mode (with press “MODE” button )
(2)、Switch the MEM .channel to Channel 10( with up or down arrow on chroma 7120 )
(3)、The LCD-indicator on chroma 7120 will show x = 0.313 ±0.03, y = 0.329 ±0.03, Y =

2

220 ±20 cd/m

(4)、Adjust the RED of color3 on factory window until chroma 7120 indicator reached

the value R=100

(5)、Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached

the value G=100

(6)、Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached

the value B=100

(7)、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the

tolerance =100±5

E、Press reset key and Turn the Power-button “off to on” to quit from factory mode.

2. Geometry

1).Set cross-hatch pattern and preset timing as timing table listed.

2).Change to each mode in turn and wait for the monitor finish auto-alignment and save

press before change to next mode.

3).Until all of modes are adjusted, exit OSD menu and press POWER OFF to exit factory
mode.

ViewSonic Corporation

- 27 –

Confidential - Do Not Cop VA1903wb/VA1903wm

5.4 Factory Defaults

Item Defaults Item Defaults

Contrast 70% Input Priority N/A

Brightness 100% Resolution Notice On

Color Temperature 6500K Volume 50%

Sharpness 100% Balance N/A

OSD H. Position 50% Treble N/A

OSD V. Position 50% Bass N/A

OSD Time Out 15 720x400 / 640x400 720x400

OSD Background On

5.5 Function Test

1 Product: 19” LCD Monitor

2 Test Equipment: Color Video Signal & Pattern (or PC with SXGA resolution and a

sound card)

3 Test Condition: Before function test and alignment, each LCD Monitor should be

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=75Hz)
800*600 (H=53.7kHz, V=75Hz)
1024*768 (H=68.67kHz, V=75Hz)
1280*1024 (H=79.97kHz, V=75Hz)
1440*900 (H=70.6kHz, V=75Hz)

(for VA1903wm only)

4 Test Display Modes & Pattern

Compatible Modes

Item Timing Analog

1 640 x 480 @ 60Hz, 31.5kHz
2 640 x 480 @ 75Hz, 31.5kHz
3 720 x 400 @ 70Hz, 31.5kHz
4 800 x 600 @ 56Hz, 35.1kHz
5 800 x 600 @ 60Hz, 37.9kHz
6 800 x 600 @ 72Hz, 48.1kHz
7 800 x 600 @ 75Hz, 46.9kHz
8 1024 x 768 @ 60Hz, 48.4kHz

9 1024 x 768 @ 70Hz, 56.5kHz
10 1024 x 768 @ 72Hz, 58.1kHz
11 1024 x 768 @ 75Hz, 60.0kHz

12 1280 x 1024 @ 60Hz
13 1280 x 1024 @ 75Hz
14 1440 x 900 @ 60Hz
15 1440 x 900 @ 75Hz

, 48.4kHz

, 60.0kHz
, 55.9kHz
, 70.6kHz

ViewSonic Corporation

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

Yes
Yes
Yes
Yes

- 28 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Function Test Display Pattern

Item Test Content Pattern Specification Remark

1

2

3 Boundary

4

Frequency &

Tracking
Contrast/Bright
ness

Fine Line Moire

16 Gray Scale

Horizontal&Vertical
Thickness

RGB Color
Performance

RGB Color Intensities

Screen

5

Uniformity &

Full White

Flicker

6

Dead
Pixel/Line

White Screen & Dark
Screen

7 White Balance White & Black Pattern

Eliminate visual wavy
noise.
16 gray levels sh should
be distinguishable.

Figure 1

Figure 2

Horizontal and Vertical
position of video should
be adjustable to be

Figure 3

within the screen frame.
Contrast of each R, G,
B, color should be
normal.

Should be compliant
with the spec.

Figure
4,5,6

Figure 7

The numbers of dead
pixels should be

Figure 7,8
compliant with the spec.
The screen must have
the pure white and black

Figure 9
pattern, no other color.

Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2)

- 29 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

Horizontal & Vertical Thickness Pattern R. Color Pattern (Figure 4)
(Figure 3)

G. Color Pattern (Figure 5) B. Color Pattern (Figure 6)

Full White Pattern (Figure 7) Dark Screen Pattern (Figure 8)

- 30 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

Black-White Pattern (Figure 9)

4.3 Function Test and Alignment Procedure
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.

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.

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.

DDC

Test Pattern: EDID program
Make sure it can pass test program.

Fine Tune and Sharpness

Test Signal: 1440*900@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.

Boundary

Test Signal: 1440*900@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.

ViewSonic Corporation

- 31 –

Confidential - Do Not Cop VA1903wb/VA1903wm

White Balance

Test Signal: 1440*900@60Hz
Test Pattern: White and Black Pattern

1.5.8 R, G, B, Colors Contrast
Test Signal: 1440*900@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.

Screen Uniformity and Flicker

Test Signal: 1440*900@60Hz
Test Pattern: Full White Pattern

- Check and see if it is in normal condition.

1.5.10 Dead Pixel and Line
Test Signal: 1440*900@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.

Mura

Test Pattern: White, RGB, Black, & Grey
Test Tool: 10% ND Filter

- Check if the Mura can pass 10% ND Filter.

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.

Check for Secondary Display Modes

Test Signal:

Analog: 640*480@60/75Hz;
720*400@70Hz; 800*600@56/60/72/75Hz;
1024*768@60/70/72/75Hz; 1280*1024@60/75Hz
1440*900@60/75Hz

- Normally when the primary mode 1440*900@60Hz is well adjusted and
compliant with the specification, the secondary display modes will also be
compliant with the spec. But we still have to check with the general test pattern to
make sure every secondary is compliant with the specification.

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.

Power Off Monitor

Turn off the monitor by pressing “Power” button.

5.6 Firmware Upgrade Procedure

When you receive the returned monitor, please check whether the firmware version is

- 32 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

the latest. If not, please do the following procedures to upgrade it to the latest version.

1 Equipment Needed

- VA1703W/VA1903W Monitor

- Fixture for Firmware Upgrade

- Power Adapter (P/N: 47.58201.001) *1 for Fixture

- VGA Cable (P/N: 42.59901.003) *1(Pin 4, 11 should be connected to GND)

- PC (Personal Computer)

- LPT Cable (P/N: 42.59906.001) *1

- Firmware Upgrade Program

- One additional monitor for checking the program execution

VA1703W/VA1903W

2 Setup Procedure

2.1 Connect P2 of Fixture with printer port of PC by LPT Cable.

2.2 Connect P1 of Fixture with VA1703W/VA1903W Monitor by VGA Cable.

2.3 Plug Power Adapter to Fixture.

2.4 Connect Power Cord to VA1703W/VA1903W Monitor.

2.5 Connect P3 to the Signal Generator (eg.Chroma2326) for verifying it after the

operation being completed.

2.6 Connect PC to the additional monitor.

ViewSonic Corporation

- 33 –

Confidential - Do Not Cop VA1903wb/VA1903wm

JP1：to Power Adapter

P1：to VGA Cable

P2：to LPT Cable

P3：to Signal Generator

3 Firmware Upgrade Procedure

Step 1. Let VA1703W/VA1903W set to be connected with AC cable and VGA cable.

Step 2.Execute the MSstar ISP tool.

Step 3. Click “Connect” button . (On this step, if the connection is successful, the
“Device Type is ******(Flash Type)” Dialog will be showed. If not, the error dialog will be
done.)

- 34 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

Step 4. Click “Read” button. Select the object bincode on your corresponding directory.

Step 5. Click “Auto” button. Be sure that function of Erase Device (File Area), Blank,
Program and Verify is selected, then execute the flashing action by clicking the “Run”
button.

- 35 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

Step 6. If the flashing F/W has been completed, “Verify Ok” message will be shown on
the right TextBox.

Step 7. Unplug and replug power cord of VA1703W/VA1903W set and then check the
OSD operation and image on srceen.

Step 8. At last, do “Memory Recall.”

- 36 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

3.2 Setup Procedure

3.2.1 Connect P2 and monitor of Fixture with VGA ports of VA1703W/VA1903W by

VGA Cable.

3.2.2 Connect P1 of Fixture with Printer port of PC by LPT Cable.

3.2.3 Plug Power Adapter to Fixture.

3.2.4 Connect Power Cord to VA1703W/VA1903W Monitor.

3.2.5 Connect PC to the additional monitor.

JP1： Power Adapter

P2： VGA Cable

P1：to LTP Cable

3.3 DDC Key In Procedure

Sep1.Select and execute DDC Key In program

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

- 37 –

ViewSonic Corporation

- 38 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Sep2:Inpute the S/N and execute “Enter”

ViewSonic Corporation

- 39 –

Confidential - Do Not Cop VA1903wb/VA1903wm

ViewSonic Corporation

- 40 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Sep3:Key the “Enter” and write the data

ViewSonic Corporation

- 41 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Sep4:If ddc program OK and show “data compare ok”

ViewSonic Corporation

- 42 –

Confidential - Do Not Cop VA1903wb/VA1903wm

5.7 Packing Procedure

ViewSonic Corporation

- 43 –

Confidential - Do Not Cop VA1903wb/VA1903wm

6. Troubleshooting Flow Chart

ViewSonic Corporation

- 44 –

Confidential - Do Not Cop VA1903wb/VA1903wm

7.

Recommended Spare Part List

VA1903m BOM list——T96HM9DB1WVSAJ

Item

ViewSonic

P/N

Ref. P/N Description Location

Universal

number#

1 AUPC6AA2 AUPC BOARD 1
2 CBPC6HM9VSA1 G2467-B-X-X-1-20061121 1
3 KEPC6AAF KEPC BOARD 1
4 PWPC942HV1J G1899-1A-VS-X-3-061214 1
5 15G5990 1 KENSINGTON BRACKET 1
6 23G3178709 3A VSC17-LCD FRONT LOGO 1
7 23G3178709 4A VSC17-LCD FRONT LOGO 1
8 40G 45760819A MODEL LABEL 1

9 40G 459709 1B CARTON LABEL 1
10 40G 459709 4A H/V WARNING LABEL 1
11 40G 459709 5A HI-POT LABEL FOR 17-LCD 1
12 40G 58162435A MANUAL P/N LABEL 1
13 40G581B709 4A S/N LABEL 2
14 45G 77 3 TRANSPARENT SHEET 173
15 52G 1185 24 TAPE 65
16 52G 1207 A AL Foil Adhesive tape 1
17 52G 1211527 AL Foil Adhesive tape 2
18 52G 2191 D Adhesive tape 75
19 52G6020 17 PROTECT FILM 1
20 78G 455 4 YL SPAKER, 115+-5MM 1
21 78G 455 4 YR SPAKER, 130+-5MM 1
22 89G 17356D 52 AUDIO CABLE 1
23 89G 728HAA902 SIGNAL CABLE 1
24 89G404A18N LS POWER CORD 1
25 95G8014 12 73 HARNESS 12P-12P 170MM 1
26 95G8018 30142 HARNESS 30P-24P 200MM 1
27 M1G 130 5120 SCREW M3X5 4
28 M1G1140 6120 SCREW 1
29 M1G1730 6120 M3*6 4
30 M1G1730 6120 M3*6 2
31 M1G1730 6120 M3*6 2
32 M1G1740 8120 SCREW FOR STD/MF XN01A 2
33 M1G2640 12 47 CR3 SCREW XN01A 4
34 Q1G 330 8 47 CR3 SCREW 1
35 Q1G 330 8120 SCREW 4
36 Q1G1140 10120 SCREW XN01A 2
37 Q1G1740 8120 Q4*8 XN01A 1

Q'ty

ViewSonic Corporation

- 45 –

Confidential - Do Not Cop VA1903wb/VA1903wm

38 750GLH90GW132N000V PANEL HSD190MGW1-A03 HSD 1
39 A34G0028 KR L BASE 1
40 A34G0245AKD L BEZEL 1
41 A34G0246 KR 1L REAR COVER PSWG/W AUDIO 1
42 A34G0247 KR L STAND 1
43 A34G0248 KR L HINGE COVER 1
44 J12G 394800 FOOT 6
45 J12G 808 1 VESA RUBBER 4
46 J15G0188 2 MAIN FRAME HYDIS 1
47 J37G0090 1 HINGE 1
48 J40G190T709 6A ID VA1903WM-T 1
49 J40GSTAR709 1A EPA LABEL 1
50 J41G780170916A INSERT CARD 1
51 J41G7802709 2A QSG 1
52 J41G7802709 3A ROHS INSET 1
53 J44G9012 1 EPS(L) 1
54 J44G9012 2 EPS(R) 1
55 J44G9012709 2B CARTON 1
56 J45G 76 28V3A PE BAG FOR MANUAL-CARD 1
57 J45G 88606 R PE BAG FOR BASE 1
58 J45G 88609800 R EPE COVER 1
59 J45G 88626 1 R PE BAG FOR MONITOR 1
60 J50G 600 5 HANDLE 1 1
61 J50G 600 6 HANDLE 2 1
62 J52G 1185VSC MIDDLE TAPE FOR CARTON 10
63 J70G1902709 2A CD MANUAL 1
64 SMTAUPC6AA2 AUPCBOARD FOR SMT 1
65 33G802410C H Wafer&Plug 10P CN202 1
66 56G 616 31 IC TDA7496T 1.2W*2 DIP-2 U201 1
67 67G 305471 4 105℃RADIALE-CAPACTOR 47 C201 1
68 67G 305471 4 105℃RADIALE-CAPACTOR 47 C202 1
69 67G 305471 4 105℃RADIALE-CAPACTOR 47 C208 1
70 67G215L471 3N 470UF/16V C205 1
71 67G215L471 3N 470UF/16V C207 1
72 88G 30214K PHONE JACK 5PIN CN201 1
73 90G6093 1 HEAT SINK U201 1
74 AIAUPC6AA2 PC BOARD 1
75 61G0603102 CHIPR 1KOHM +-5% 1/10W R207 1
76 61G0603102 CHIPR 1KOHM +-5% 1/10W R208 1
77 61G0603183 CHIP resistors 1/10W R201 1

ViewSonic Corporation

- 46 –

Confidential - Do Not Cop VA1903wb/VA1903wm

78 61G0603183 CHIP resistors 1/10W R203 1
79 61G0603203 RST CHIP 20K 1/10W 5% R210 1
80 61G0603203 RST CHIP 20K 1/10W 5% R211 1
81 61G0603204 RST CHIP 200K 1/10W 5% R202 1
82 61G0603224 RST CHIP 220K 1/10W 5% R212 1
83 65G0603101 31 CHIP 100P 50V NPO C211 1
84 65G0603101 31 CHIP 100P 50V NPO C212 1
85 65G0603104 32 CHIP 0.1UF 50V X7R C203 1
86 65G0603104 32 CHIP 0.1UF 50V X7R C213 1
87 65G0603474 27 CHIP 0.47UF 25V Y5V C204 1
88 65G0603474 27 CHIP 0.47UF 25V Y5V C206 1
89 67G 305100 4T 105℃ 10uF 25V C210 1
90 67G 305109 7T 105℃ 1uF 50V C209 1
91 95G 90 23 TINCOATEDCOPPER J201 1
92 95G 90 23 TINCOATEDCOPPER J202 1
93 95G 90 23 TINCOATEDCOPPER J203 1
94 95G 90 23 TINCOATEDCOPPER J204 1
95 95G 90 23 TINCOATEDCOPPER J205 1
96 95G 90 23 TINCOATEDCOPPER J206 1
97 95G 90 23 TINCOATEDCOPPER J208 1
98 715G2472 1 AUDIO BOARD 1
99 SMTC6HM9VSA1 MAIN BOARD 1

100 33G3802 9 WAFER 2.0MM 9P CN701 1
101 33G801710A H WAFER 2.0MM 10P CN403 1
102 33G8027 12 WAFER 2*6P 2.0MM R/A CN404 1
103 33G802724B H WAFER&PLUG CN703 1
104 40G 45762412B CBPC LABEL 1.05
105 67G215L101 4N LOW ESR EC 100UF 25V NCC C702 1
106 67G215V100 7R LOW E.S.R 10UF+/-20% 50V C706 1
107 67G215V100 7R LOW E.S.R 10UF+/-20% 50V C708 1
108 67G305V100 3 CAPACITOR 10UF/16V C426 1
109 67G305V100 3 CAPACITOR 10UF/16V C441 1
110 67G305V100 3 CAPACITOR 10UF/16V C711 1
111 67G305V101 4 100UF 25V C701 1
112 67G305V220 3 22UF 16V C712 1
113 88G 35315F H D-SUB 15PIN CN401 1
114 93G 22 53 CRYSTAL 14.31818MHZ HC-4 X401 1
115 56G 562161 IC TSUM16AL-LF-1 PQFP-10 U401 1
116 56G 56327A IC AP1117E18LA U702 1
117 56G 585 4A IC AP1117E33LA U701 1

ViewSonic Corporation

- 47 –

Confidential - Do Not Cop VA1903wb/VA1903wm

118 56G1133 32 IC M24C04-WMN6TP SO8 U406 1
119 56G1133 84 AF24BC02-SI SOIC-8 U403 1
120 56G1133713 X PM25LV010A-100SCE U402 1
121 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q402 1
122 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q405 1
123 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q701 1
124 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q702 1
125 57G 417 13 T 2N3906S-RTK/PS SOT-23 Q403 1
126 57G 417 13 T 2N3906S-RTK/PS SOT-23 Q404 1
127 57G 417 13 T 2N3906S-RTK/PS SOT-23 Q410 1
128 57G 417 13 T 2N3906S-RTK/PS SOT-23 Q704 1
129 57G 758 1 2N7002E-TI Q408 1
130 57G 758 1 2N7002E-TI Q409 1
131 57G 763 1 AO3401L Q703 1
132 61G0402000 RST CHIP JUMP MAX 0R05 1 R467 1
133 61G0402000 RST CHIP JUMP MAX 0R05 1 R471 1
134 61G0402100 RST CHIP 10R 1/16W 5% R507 1
135 61G0402100 RST CHIP 10R 1/16W 5% R508 1
136 61G0402101 RST CHIP 100R 1/16W 5% R405 1
137 61G0402101 RST CHIP 100R 1/16W 5% R407 1
138 61G0402101 RST CHIP 100R 1/16W 5% R409 1
139 61G0402101 RST CHIP 100R 1/16W 5% R460 1
140 61G0402101 RST CHIP 100R 1/16W 5% R461 1
141 61G0402101 RST CHIP 100R 1/16W 5% R462 1
142 61G0402101 RST CHIP 100R 1/16W 5% R463 1
143 61G0402101 RST CHIP 100R 1/16W 5% R472 1
144 61G0402101 RST CHIP 100R 1/16W 5% R474 1
145 61G0402101 RST CHIP 100R 1/16W 5% R476 1
146 61G0402101 RST CHIP 100R 1/16W 5% R511 1
147 61G0402102 RST CHIP 1K 1/16W 5% R414 1
148 61G0402102 RST CHIP 1K 1/16W 5% R416 1
149 61G0402102 RST CHIP 1K 1/16W 5% R422 1
150 61G0402102 RST CHIP 1K 1/16W 5% R485 1
151 61G0402102 RST CHIP 1K 1/16W 5% R701 1
152 61G0402103 RST CHIP 10K 1/16W 5% R411 1
153 61G0402103 RST CHIP 10K 1/16W 5% R418 1
154 61G0402103 RST CHIP 10K 1/16W 5% R420 1
155 61G0402103 RST CHIP 10K 1/16W 5% R421 1
156 61G0402103 RST CHIP 10K 1/16W 5% R443 1
157 61G0402103 RST CHIP 10K 1/16W 5% R445 1

ViewSonic Corporation

- 48 –

Confidential - Do Not Cop VA1903wb/VA1903wm

158 61G0402103 RST CHIP 10K 1/16W 5% R449 1
159 61G0402103 RST CHIP 10K 1/16W 5% R451 1
160 61G0402103 RST CHIP 10K 1/16W 5% R457 1
161 61G0402103 RST CHIP 10K 1/16W 5% R465 1
162 61G0402103 RST CHIP 10K 1/16W 5% R469 1
163 61G0402103 RST CHIP 10K 1/16W 5% R473 1
164 61G0402103 RST CHIP 10K 1/16W 5% R475 1
165 61G0402103 RST CHIP 10K 1/16W 5% R477 1
166 61G0402103 RST CHIP 10K 1/16W 5% R486 1
167 61G0402103 RST CHIP 10K 1/16W 5% R509 1
168 61G0402103 RST CHIP 10K 1/16W 5% R510 1
169 61G0402103 RST CHIP 10K 1/16W 5% R512 1
170 61G0402103 RST CHIP 10K 1/16W 5% R513 1
171 61G0402103 RST CHIP 10K 1/16W 5% R514 1
172 61G0402103 RST CHIP 10K 1/16W 5% R515 1
173 61G0402103 RST CHIP 10K 1/16W 5% R519 1
174 61G0402103 RST CHIP 10K 1/16W 5% R704 1
175 61G0402103 RST CHIP 10K 1/16W 5% R708 1
176 61G0402103 RST CHIP 10K 1/16W 5% R710 1
177 61G0402103 RST CHIP 10K 1/16W 5% R721 1
178 61G0402200 RST CHIP 20R 1/16W 5% R446 1
179 61G0402200 RST CHIP 20R 1/16W 5% R447 1
180 61G0402203 RST CHIP 20K 1/16W 5% R412 1
181 61G0402222 RST CHIP 2K2 1/16W 5% R413 1
182 61G0402222 RST CHIP 2K2 1/16W 5% R415 1
183 61G0402223 RST CHIP 22K 1/16W 5% R456 1
184 61G0402241 RST CHIP 240R 1/16W 5% R466 1
185 61G0402390 0F RST CHIP 390R 1/16W 1% R442 1
186 61G0402470 RST CHIP 47R 1/16W 5% R417 1
187 61G0402470 RST CHIP 47R 1/16W 5% R419 1
188 61G0402470 RST CHIP 47R 1/16W 5% R499 1
189 61G0402470 RST CHIP 47R 1/16W 5% R502 1
190 61G0402470 RST CHIP 47R 1/16W 5% R503 1
191 61G0402470 RST CHIP 47R 1/16W 5% R506 1
192 61G0402471 RST CHIP 470R 1/16W 5% R410 1
193 61G0402472 RST CHIP 4K7 1/16W 5% R464 1
194 61G0402472 RST CHIP 4K7 1/16W 5% R468 1
195 61G0402472 RST CHIP 4K7 1/16W 5% R484 1
196 61G0402472 RST CHIP 4K7 1/16W 5% R500 1
197 61G0402472 RST CHIP 4K7 1/16W 5% R504 1

ViewSonic Corporation

- 49 –

Confidential - Do Not Cop VA1903wb/VA1903wm

198 61G0402472 RST CHIP 4K7 1/16W 5% R702 1
199 61G0402472 RST CHIP 4K7 1/16W 5% R703 1
200 61G0402472 RST CHIP 4K7 1/16W 5% R705 1
201 61G0402472 RST CHIP 4K7 1/16W 5% R709 1
202 61G0402513 RST CHIP 51K 1/16W 5% R711 1
203 61G0402562 9F PST CHIP 56R2 1/16W 1% R404 1
204 61G0402562 9F PST CHIP 56R2 1/16W 1% R406 1
205 61G0402562 9F PST CHIP 56R2 1/16W 1% R408 1
206 61G0402750 RST CHIP 75R 1/16W 5% R470 1
207 61G0402750 9F RST CHIP 75 OHM 1/16W 1% R401 1
208 61G0402750 9F RST CHIP 75 OHM 1/16W 1% R402 1
209 61G0402750 9F RST CHIP 75 OHM 1/16W 1% R403 1
210 61G0603000 CHIPR 0OHM +-5% 1/10W FB401 1
211 61G0603000 CHIPR 0OHM +-5% 1/10W FB402 1
212 61G0603000 CHIPR 0OHM +-5% 1/10W FB403 1
213 61G0603103 CHIPR 10KOHM+-5% 1/10W R712 1
214 61G1206000 CHIP resistors 1/3W R706 1
215 61G1206151 RST CHIP 150R 1/4W 5% R713 1
216 61G1206151 RST CHIP 150R 1/4W 5% R714 1
217 65G0402104 15 MLCC 0402 CAP 0.1UF K C401 1
218 65G0402104 15 MLCC 0402 CAP 0.1UF K C402 1
219 65G0402104 15 MLCC 0402 CAP 0.1UF K C403 1
220 65G0402104 15 MLCC 0402 CAP 0.1UF K C424 1
221 65G0402104 15 MLCC 0402 CAP 0.1UF K C436 1
222 65G0402104 15 MLCC 0402 CAP 0.1UF K C437 1
223 65G0402104 15 MLCC 0402 CAP 0.1UF K C438 1
224 65G0402104 15 MLCC 0402 CAP 0.1UF K C439 1
225 65G0402104 15 MLCC 0402 CAP 0.1UF K C440 1
226 65G0402104 15 MLCC 0402 CAP 0.1UF K C446 1
227 65G0402104 15 MLCC 0402 CAP 0.1UF K C455 1
228 65G0402104 15 MLCC 0402 CAP 0.1UF K C704 1
229 65G0402104 15 MLCC 0402 CAP 0.1UF K C705 1
230 65G0402104 15 MLCC 0402 CAP 0.1UF K C707 1
231 65G0402104 15 MLCC 0402 CAP 0.1UF K C709 1
232 65G0402104 15 MLCC 0402 CAP 0.1UF K C710 1
233 65G0402105 05 MLCC 0402 1μF6.3V X5R C450 1
234 65G0402220 31 CHIP 22pF 50V NPO C428 1
235 65G0402220 31 CHIP 22pF 50V NPO C429 1
236 65G0402221 32 MLCC 0402 CAP 220PF J 50 C412 1
237 65G0402221 32 MLCC 0402 CAP 220PF J 50 C433 1

ViewSonic Corporation

- 50 –

Confidential - Do Not Cop VA1903wb/VA1903wm

238 65G0402221 32 MLCC 0402 CAP 220PF J 50 C434 1
239 65G0402224 17 CHIP 0.22UF 16V Y5V C413 1
240 65G0402224 17 CHIP 0.22UF 16V Y5V C425 1
241 65G0402224 17 CHIP 0.22UF 16V Y5V C448 1
242 65G0402330 31 CHIP 33PF 50V NPO C411 1
243 65G0402330 31 CHIP 33PF 50V NPO C432 1
244 65G0402473 12 CHIP 0.047UF 16V X7R C404 1
245 65G0402473 12 CHIP 0.047UF 16V X7R C405 1
246 65G0402473 12 CHIP 0.047UF 16V X7R C406 1
247 65G0402473 12 CHIP 0.047UF 16V X7R C407 1
248 65G0402473 12 CHIP 0.047UF 16V X7R C408 1
249 65G0402473 12 CHIP 0.047UF 16V X7R C409 1
250 65G0402473 12 CHIP 0.047UF 16V X7R C410 1
251 65G0402473 12 CHIP 0.047UF 16V X7R C430 1
252 65G0402473 12 CHIP 0.047UF 16V X7R C431 1
253 65G0402473 12 CHIP 0.047UF 16V X7R C435 1
254 65G0402473 12 CHIP 0.047UF 16V X7R C442 1
255 65G0402473 12 CHIP 0.047UF 16V X7R C443 1
256 65G0402473 12 CHIP 0.047UF 16V X7R C444 1
257 65G0402473 12 CHIP 0.047UF 16V X7R C445 1
258 71G 56Z601 M CHIP BEAD 0805 600OHM FB405 1
259 71G 56Z601 M CHIP BEAD 0805 600OHM FB406 1
260 71G 56Z601 M CHIP BEAD 0805 600OHM FB407 1
261 71G 56Z601 M CHIP BEAD 0805 600OHM FB408 1
262 71G 56Z601 M CHIP BEAD 0805 600OHM FB409 1
263 93G 64 42 P BAV70 DIODE D412 1
264 93G 6432P LL4148 MINI-MELF/LL-34 D414 1
265 93G 6433P BAV99 SOT-23 D401 1
266 93G 6433P BAV99 SOT-23 D402 1
267 93G 6433P BAV99 SOT-23 D403 1
268 93G 6433P BAV99 SOT-23 D415 1
269 93G 39S 34 T ZENER DIODE UDZS5.6B ZD401 1
270 93G 39S 34 T ZENER DIODE UDZS5.6B ZD402 1
271 93G 39S 34 T ZENER DIODE UDZS5.6B ZD403 1
272 93G 39S 34 T ZENER DIODE UDZS5.6B ZD404 1
273 93G 39S 34 T ZENER DIODE UDZS5.6B ZD405 1
274 93G 39S 34 T ZENER DIODE UDZS5.6B ZD406 1
275 93G 39S 34 T ZENER DIODE UDZS5.6B ZD407 1
276 715G2467 1 MAIN BOARD 1
277 SMTKEPC6AAF KEPCBOARD FOR SMT 1

ViewSonic Corporation

- 51 –

Confidential - Do Not Cop VA1903wb/VA1903wm

278 33G3802 2H WAFTER CN002 1
279 33G3802 2H WAFTER CN003 1
280 33G8027 12 H WAFER 2*6P 2.0mm R/A CN001 1
281 77G 600 1GCJ SWITCH SW001 1
282 77G 600 1GCJ SWITCH SW002 1
283 77G 600 1GCJ SWITCH SW003 1
284 77G 600 1GCJ SWITCH SW004 1
285 77G 600 1GCJ SWITCH SW005 1
286 81G 12 1F GH LED GHZYG603D2-5B LED001 1
287 95G 900 57 Wire Harness 70mm C12 1
288 AIKEPC6AAF PC BOARD 1
289 61G0603102 CHIPR 1KOHM +-5% 1/10W R005 1
290 61G0603392 CHIP 3.9K OHM 1/10W R001 1
291 61G0603392 CHIP 3.9K OHM 1/10W R002 1
292 61G0603392 CHIP 3.9K OHM 1/10W R003 1
293 95G 90 23 TINCOATEDCOPPER J1 1
294 95G 90 23 TINCOATEDCOPPER J3 1
295 95G 90 23 TINCOATEDCOPPER J4 1
296 95G 90 23 TINCOATEDCOPPER J5 1
297 715G2473 1 KEY BOARD 1
298 PW942HV1SMTJ POWER BOARD FOR SMT 1
299 S73G17465VW LINE FILTER L902 1
300 S73G25391V CHOKE L903 1
301 S73G25391V CHOKE L904 1
302 S80GL19T8V1 X'FMR PT801 1
303 S80GL19T8V1 X'FMR PT802 1
304 9G6005 1 PIN FOOT GND1 1
305 33G8021 2E U 3.5MM WAFER CN801 1
306 33G8021 2E U 3.5MM WAFER CN802 1
307 33G8021 2E U 3.5MM WAFER CN803 1
308 33G8021 2E U 3.5MM WAFER CN804 1
309 40G 45762420A ID LABEL 2
310 51G 6 4503 RTV GLUE 2
311 56G 139 5A TCET1103G IC902 1
312 61G 58080 WT NTCR NR901 1
313 63G 10747410S 0.47UF +-10% 250VAC C903 1
314 65G 3J2206ET 22PF 5% 3KV TDK C816 1
315 65G 3J2206ET 22PF 5% 3KV TDK C834 1
316 65G 3J2206ET 22PF 5% 3KV TDK C837 1
317 65G 3J2206ET 22PF 5% 3KV TDK C841 1

ViewSonic Corporation

- 52 –

Confidential - Do Not Cop VA1903wb/VA1903wm

318 65G 3J5096ET 5PF 5% SL 3KV C824 1
319 65G 3J5096ET 5PF 5% SL 3KV C825 1
320 65G 3J5096ET 5PF 5% SL 3KV C826 1
321 65G 3J5096ET 5PF 5% SL 3KV C835 1
322 65G305M1022BP Y2 1000PF M 250VAC Y5P C901 1
323 65G305M1022BP Y2 1000PF M 250VAC Y5P C902 1
324 65G306M2222BP 2200PF Y1 400 20% BY UK C900 1
325 67G 31510115K EC 100uF 450V PW2W101MNN C905 1
326 67G215D4714KV EC 105? CAP 470uF M 25V C811 1
327 67G215D4714KV EC 105? CAP 470uF M 25V C815 1
328 67G215D4714KV EC 105? CAP 470uF M 25V C904 1
329 67G215D4714KV EC 105? CAP 470uF M 25V C911 1
330 67G215D4714KV EC 105? CAP 470uF M 25V C912 1
331 67G215D4714KV EC 105? CAP 470uF M 25V C935 1
332 67G215D4714KV EC 105? CAP 470uF M 25V C936 1
333 67G215D4714KV EC 105? CAP 470uF M 25V C937 1
334 73L 174 53 LG GP LINE FILTER L901 1
335 80GL17T 37 L GP X'FMR 750uH PT-005477-2 T901 1
336 87G 501 36 S AC SOCKET CN901 1
337 93G 50460900 GBU408 BD901 1
338 95G 90 23 TINCOATEDCOPPER JP914 1
339 95G8014 12707 JT WIRE HARNESS CN902 1
340 705G 980 61S01 R905 ASS'Y 1
341 705G 980 61S02 R914 ASS'Y 1
342 705GQ7K0 57001 Q903 ASS'Y 1
343 705GQ7K0 93001 D908 ASS'Y 1
344 705GQ7K0 93003 D909 ASS'Y 1
345 PW942HV1AIJ POWER BOARD FOR AI 1
346 56G 379 61 LD7575 PS SOP-8 IC901 1
347 56G 608 10 OZ9938GN SOIC-16 IC801 1
348 57G 417 4 PMBS3904/PLILIPS Q801 1
349 57G 417 4 PMBS3904/PLILIPS Q802 1
350 57G 417 4 PMBS3904/PLILIPS Q803 1
351 57G 759 2 TRANSISTOR RK7002 SOT-3 Q804 1
352 57G 759 2 TRANSISTOR RK7002 SOT-3 Q807 1
353 57G 759 2 TRANSISTOR RK7002 SOT-3 Q808 1
354 57G 759 2 TRANSISTOR RK7002 SOT-3 Q809 1
355 57G 759 2 TRANSISTOR RK7002 SOT-3 Q810 1
356 57G 763 14 AM9945N-T1-PF SOIC-8 Q805 1
357 57G 763 14 AM9945N-T1-PF SOIC-8 Q806 1

ViewSonic Corporation

- 53 –

Confidential - Do Not Cop VA1903wb/VA1903wm

358 61G0805000 RST CHIP MAX 0R05 1/8W JR801 1
359 61G0805000 RST CHIP MAX 0R05 1/8W JR804 1
360 61G0805000 RST CHIP MAX 0R05 1/8W JR805 1
361 61G0805000 RST CHIP MAX 0R05 1/8W JR807 1
362 61G0805000 RST CHIP MAX 0R05 1/8W R825 1
363 61G0805100 3F RST CHIPR 100KOHM +-1% 1 R913 1
364 61G0805100 4F RST CHIPR 1 MOHM +-1% 1/ R810 1
365 61G0805100 4F RST CHIPR 1 MOHM +-1% 1/ R816 1
366 61G0805102 CHIPR 1K OHM +-5% 1/10W R836 1
367 61G0805102 CHIPR 1K OHM +-5% 1/10W R843 1
368 61G0805102 CHIPR 1K OHM +-5% 1/10W R920 1
369 61G0805102 CHIPR 1K OHM +-5% 1/10W R921 1
370 61G0805102 CHIPR 1K OHM +-5% 1/10W R922 1
371 61G0805102 CHIPR 1K OHM +-5% 1/10W R926 1
372 61G0805103 CHIP 10KOHM 1/10W R803 1
373 61G0805103 CHIP 10KOHM 1/10W R804 1
374 61G0805103 CHIP 10KOHM 1/10W R806 1
375 61G0805103 CHIP 10KOHM 1/10W R812 1
376 61G0805103 CHIP 10KOHM 1/10W R912 1
377 61G0805104 RST CHIP 100K 1/8W 5% R801 1
378 61G0805104 RST CHIP 100K 1/8W 5% R815 1
379 61G0805105 RST CHIP 1M 1/8W 5% R813 1
380 61G0805105 RST CHIP 1M 1/8W 5% R846 1
381 61G0805105 RST CHIP 1M 1/8W 5% R847 1
382 61G0805105 RST CHIP 1M 1/8W 5% R848 1
383 61G0805105 RST CHIP 1M 1/8W 5% R849 1
384 61G0805105 RST CHIP 1M 1/8W 5% R860 1
385 61G0805184 RST CHIP 180K 1/8W 5% C808 1
386 61G0805240 1F CHIPR 2.4KOHM+-1% 1/10 R924 1
387 61G0805304 RST CHIPR 300 KOHM +-5% R802 1
388 61G0805330 2F CHIP 33KOHM 1/10W/1% R817 1
389 61G0805330 2F CHIP 33KOHM 1/10W/1% R923 1
390 61G0805360 0F RST CHIPR 360 OHM +-1% 1 R841 1
391 61G0805360 1F CHIP 3.6KOHM 1/10W 1% R925 1
392 61G0805362 RST CHIPR 3.6 KOHM +-5% R827 1
393 61G0805362 RST CHIPR 3.6 KOHM +-5% R831 1
394 61G0805472 RST CHIP 4K7 1/8W 5% R850 1
395 61G0805472 RST CHIP 4K7 1/8W 5% R852 1
396 61G0805472 RST CHIP 4K7 1/8W 5% R853 1
397 61G0805473 RST CHIP 47K 1/8W 5% R808 1

ViewSonic Corporation

- 54 –

Confidential - Do Not Cop VA1903wb/VA1903wm

398 61G0805510 0F RST CHIPR 510 OHM +-1% 1 R826 1
399 61G0805751 RST CHIPR 750 OHM +-5% 1 R824 1
400 61G0805751 RST CHIPR 750 OHM +-5% 1 R858 1
401 61G0805754 RST CHIPR 750 KOHM +-5% R814 1
402 61G0805823 RST CHIP 82K 1/8W 5% R823 1
403 61G0805823 RST CHIP 82K 1/8W 5% R830 1
404 61G1206000 CHIP resistors 1/3W D903 1
405 61G1206000 CHIP resistors 1/3W JR803 1
406 61G1206000 CHIP resistors 1/3W JR806 1
407 61G1206000 CHIP resistors 1/3W JR809 1
408 61G1206000 CHIP resistors 1/3W JR901 1
409 61G1206000 CHIP resistors 1/3W JR902 1
410 61G1206000 4 CHIP 0OHM 4A R928 1
411 61G1206000 4 CHIP 0OHM 4A R932 1
412 61G1206101 CHIP 100OHM 5% 1/8W R916 1
413 61G1206101 CHIP 100OHM 5% 1/8W R936 1
414 61G1206101 CHIP 100OHM 5% 1/8W R937 1
415 61G1206102 CHIP 1K OHM 5% 1/8W R911 1
416 61G1206103 CHIP 10KOHM 5% 1/8W R927 1
417 61G1206220 RST CHIP 22R 1/4W 5% R807 1
418 61G1206220 RST CHIP 22R 1/4W 5% R910 1
419 61G1206300 RST CHIP 30R 1/4W 5% R818 1
420 61G1206300 RST CHIP 30R 1/4W 5% R819 1
421 61G1206300 RST CHIP 30R 1/4W 5% R828 1
422 61G1206300 RST CHIP 30R 1/4W 5% R829 1
423 61G1206300 RST CHIP 30R 1/4W 5% R861 1
424 61G1206300 RST CHIP 30R 1/4W 5% R862 1
425 61G1206300 RST CHIP 30R 1/4W 5% R863 1
426 61G1206300 RST CHIP 30R 1/4W 5% R864 1
427 61G1206392 CHIP 3.9KOHM 5% 1/4W R904 1
428 61G1206392 CHIP 3.9KOHM 5% 1/4W R931 1
429 61G1206392 CHIP 3.9KOHM 5% 1/4W R938 1
430 61G1206470 CHIP resistors 1/3W R906 1
431 61G1206470 CHIP resistors 1/3W R934 1
432 61G1206470 CHIP resistors 1/3W R935 1
433 61G1206471 RST CHIP 47OR 1/4W 5% R805 1
434 61G1206471 RST CHIP 47OR 1/4W 5% R919 1
435 61G1206472 CHIP 4.7KOHM 5% 18W R851 1
436 61G1206519 CHIP resistors 1/3W R837 1
437 61G1206519 CHIP resistors 1/3W R842 1

ViewSonic Corporation

- 55 –

Confidential - Do Not Cop VA1903wb/VA1903wm

438 61G1206519 CHIP resistors 1/3W R909 1
439 61G1206684 CHIPR 680KOHM +-5% 1/8W R901 1
440 61G1206684 CHIPR 680KOHM +-5% 1/8W R902 1
441 61G1206684 CHIPR 680KOHM +-5% 1/8W R903 1
442 65G0805102 31 1000PF 50V NPO C805 1
443 65G0805103 32 CHIP 10000 PF 50V X7R 08 C807 1
444 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C801 1
445 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C828 1
446 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C829 1
447 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C838 1
448 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C839 1
449 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C842 1
450 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C843 1
451 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C844 1
452 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C916 1
453 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C917 1
454 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C918 1
455 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C919 1
456 65G0805105 22 CHIP 1UF 25V X7R 0805 C804 1
457 65G0805105 22 CHIP 1UF 25V X7R 0805 C806 1
458 65G0805105 22 CHIP 1UF 25V X7R 0805 C840 1
459 65G0805221 31 CHIP 220PF 50V NPO C909 1
460 65G0805224 22 E65 C814 1
461 65G0805332 32 3200PF/25V/X7R C818 1
462 65G0805332 32 3200PF/25V/X7R C827 1
463 65G0805471 31 CHIP 470PF 50V NPO C820 1
464 65G0805471 31 CHIP 470PF 50V NPO C831 1
465 65G0805471 31 CHIP 470PF 50V NPO C910 1
466 65G0805473 32 SMD 47NF +-10% 50V C809 1
467 65G0805473 32 SMD 47NF +-10% 50V C819 1
468 65G080556131G MLCC 0805 560PF G 50V NP C810 1
469 65G1206104 32 CHIP 0.1UF 25V X7R 1206 C908 1
470 65G1206332 72 GP CHIP 1206 3300PF K 500V C812 1
471 65G1206332 72 GP CHIP 1206 3300PF K 500V C813 1
472 65G1206332 72 GP CHIP 1206 3300PF K 500V C822 1
473 65G1206332 72 GP CHIP 1206 3300PF K 500V C823 1
474 93G 64 33 BAV99 SOT-23 D801 1
475 93G 64 33 BAV99 SOT-23 D802 1
476 93G 64 33 BAV99 SOT-23 D803 1
477 93G 64 33 BAV99 SOT-23 D804 1

ViewSonic Corporation

- 56 –

Confidential - Do Not Cop VA1903wb/VA1903wm

478 93G 64 33 BAV99 SOT-23 D805 1
479 93G 64 33 BAV99 SOT-23 D806 1
480 93G 6432S 1N4148W DIODE D809 1
481 93G 6432S 1N4148W DIODE D810 1
482 93G 6432S 1N4148W DIODE D811 1
483 93G 6432S 1N4148W DIODE D812 1
484 93G 6432S 1N4148W DIODE D813 1
485 93G 6432S 1N4148W DIODE D904 1
486 93G 39S 24 T RLZ5.6B ROHM ZD801 1
487 93G 39S 24 T RLZ5.6B ROHM ZD902 1
488 93G 39S 38 T PTZ9.1B ROHM ZD903 1
489 93G 39S 40 T RLZ13B ROHM ZD901 1
490 93G 39S 44 T RLZ18B LLDS ZD904 1
491 6G 31500 2.0MM EYELET CN901 2
492 6G 31502 1.5MM RIVET C905 2
493 6G 31502 1.5MM RIVET L901 4
494 6G 31502 1.5MM RIVET L902 4
495 6G 31502 1.5MM RIVET NR901 2
496 6G 31502 1.5MM RIVET PT801 2
497 6G 31502 1.5MM RIVET PT802 2
498 6G 31502 1.5MM RIVET Q903 2
499 6G 31502 1.5MM RIVET T901 6
500 56G 158 4 T H431BA IC903 1
501 61G212Y305 KT MGFR 3M OHM +-5% 1/2W R822 1
502 61G212Y305 KT MGFR 3M OHM +-5% 1/2W R832 1
503 65G 1K102 5T 100PF +/-10% 1KV Y5P C931 1
504 65G 2K152 1T CERAMIC CAP C930 1
505 65G 2K152 1T CERAMIC CAP C932 1
506 65G 2K152 1T CERAMIC CAP C933 1
507 67G215Y2207KT LOW ESR EC 22uF 50V 5*1 C906 1
508 71G 55 29 Φ3.5*Φ0.8*2.2\ 100MM> FB901 1
509 84G 55 7W 250V/3.15A FUSE F901 1
510 93G 6026W52T FR107 DO-41 1000V/1A D901 1
511 93G 6038T52T FR103 DO-41 200V/1A D902 1
512 95G 90 23 TINCOATEDCOPPER C934 1
513 95G 90 23 TINCOATEDCOPPER JP801 1
514 95G 90 23 TINCOATEDCOPPER JP805 1
515 95G 90 23 TINCOATEDCOPPER JP807 1
516 95G 90 23 TINCOATEDCOPPER JP809 1
517 95G 90 23 TINCOATEDCOPPER JP811 1

ViewSonic Corporation

- 57 –

Confidential - Do Not Cop VA1903wb/VA1903wm

518 95G 90 23 TINCOATEDCOPPER JP812 1
519 95G 90 23 TINCOATEDCOPPER JP815 1
520 95G 90 23 TINCOATEDCOPPER JP817 1
521 95G 90 23 TINCOATEDCOPPER JP818 1
522 95G 90 23 TINCOATEDCOPPER JP819 1
523 95G 90 23 TINCOATEDCOPPER JP820 1
524 95G 90 23 TINCOATEDCOPPER JP821 1
525 95G 90 23 TINCOATEDCOPPER JP901 1
526 95G 90 23 TINCOATEDCOPPER JP903 1
527 95G 90 23 TINCOATEDCOPPER JP904 1
528 95G 90 23 TINCOATEDCOPPER JP911 1
529 95G 90 23 TINCOATEDCOPPER JP917 1
530 95G 90 23 TINCOATEDCOPPER JP918 1
531 95G 90 23 TINCOATEDCOPPER JP919 1
532 95G 90 23 TINCOATEDCOPPER JP920 1
533 95G 90 23 TINCOATEDCOPPER JP921 1
534 95G 90 23 TINCOATEDCOPPER JR802 1
535 715G1899 2 VS POWER BOARD 1
536 61G152M10458F 100K OHM 5% 2W R905 1
537 96G 29 6 GP SHRINK TUBE UL/CSA 20
538 61G152M47858F RST MOFR 0.47OHM +-5% 2W R914 1
539 96G 29 6 GP SHRINK TUBE UL/CSA 20
540 57G 667 21 Transistor STP10NK70ZFP Q903 1
541 AM1G1730 8120 SCREW 1
542 Q90G0035 1 HEAT SINK 1
543 93G 60252 SP20150LF TO-220F15 D908 1
544 AM1G1730 8120 SCREW 1
545 Q90G0009 1 HEAT SINK 1
546 90G6241 2 GP HEAT SINK 1
547 93G 60248 SP20100-LF ITO-220 D909 1
548 AM1G1730 8120 SCREW 1

Diversity of T96HM9DB1WVSAJ compared with T96HM9DK1WVSNJ

Item

ViewSonic

P/N

Ref. P/N Description Location

Universal

number#

2 KEPC6AAG KEPC BOARD 1

3 89G402A18N LS POWER CORD 1

4 A34G0028E7Z L BASE 1

5 A34G0245EA8B1L BEZEL 1

6 A34G0246E7Z 2L REAR COVER 1

7 A34G0247E7Z L STAND 1

8 A34G0248E7Z L HINGE COVER 1

Q'ty

ViewSonic Corporation

- 58 –

Confidential - Do Not Cop VA1903wb/VA1903wm

9 J12G 808 2 VESA RUBBER 4
10 J15G0188 1 MAIN FRAME HYDIS 1
11 J40G190T709 5A ID VA1903wb-T 1
12 J41G780170917A SELL CARD 1
13 J41G7802709 1A QSG 1
14 J44G9012709 1B CARTON 1
15 J70G1902709 1A CD MANUAL 1
16 SMTC6HM9VSA2 MAIN BOARD FOR SMT 1
17 SMTKEPC6AAG KEPC BOARD 1
18 AIKEPC6AAG KEPC BOARD FOR AI 1

ViewSonic Corporation

- 59 –

Confidential - Do Not Cop VA1903wb/VA1903wm

8.

Exploded Diagram And Spare Parts List

ViewSonic Corporation

- 60 –

Confidential - Do Not Cop VA1903wb/VA1903wm

VA1903wb EPL Part List

ITEM DESCRIPTION PART NUMBER Q'TY

1 BEZEL A34G0245B4Z L 1

2 PAENL HSD190MGW1-A02 HSD 750GLH90GW121N 1

3 FUNC.BUTTON 33G5019 KD C 1

4 G1899-1A-VS-X-3-061214 PWPC942HV1J 1

5 SCREW Q1G 330 8120 4

6 MAIN FRAME HYDIS J15G0188 1 1

7 KEPC BOARD KEPC6AAG 1

8 SCREW Q1G1140 10120 2

9 Q4*8 Q1G1740 8120 1

10 SCREW M1G1740 8120 2

11 SCREW Q1G 330 8 47 CR3 1

12 BASE A34G0028 4Z L 1

13 STAND A34G0247 4Z L 1

14 HINGE COVER A34G0248 4Z L 1

15 SCREW M1G2640 12 47 CR3 4

16 HINGE J37G0090 1 1

17 VESA RUBBER J12G 808 2 4

18 REAR COVER A34G0246 4Z 2L 1

19 SCREW M3X5 M1G 130 5120 4

20 SCREW M1G1140 6120 1

21 M3*6 M1G1730 6120 6

22 G2467-B-X-X-1-20061121 CBPC6HM9VSA2 1

23 VSC17-LCD FRONT LOGO 23G3178709 3A 1

24 VSC17-LCD FRONT LOGO 23G3178709 4A 1

ViewSonic Corporation

- 61 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Packing For Shipping

ViewSonic Corporation

- 62 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Packing Part List

ITEM DESCRIPTION PART NUMBER Q'TY

1 CARTON J44G9012709 1A 1

2 HANDLE1/2 J50G 600 5/6 1

3 PE BAG 45G 76 28 V3A 1

4 CD MANUAL J70G1902709 1A 1

5 QSG J41G7802709 1A 1

6 EPE COVER J45G 88606 R 1

7 MONITOR T96HM9DD1WVSNJ 1

8 PE BAG J45G 88626 1 R 1

9 EPS J44G9012 1/2 1

10 POWER CORD 89G414A18N LS 1

11 SIGNAL CABLE 89G 728HAA902 1

12 BASE A34G0028E4Z L 1

ViewSonic Corporation

- 63 –

Confidential - Do Not Cop VA1903wb/VA1903wm

9. Disassemble Process

9.1 Units Disassemble Process

9.1.1 Tools



Glove



Big cross screwdriver



Small cross screwdriver



Prize equipment or abandoned IC card



Screw box



Cushion



Six angle sleeve spanner

9.1.2 Disassemble process

1、 Tide up the worktable, spread straight cushion, put the monitor on it, the front side

adown.(Picture 1)

2

、

Remove the decorate slice of the back cover.(Picture 2, 3)

3

、

Disassemble the 4 screws that fix the stand, remove the stand.(Picture, 4)

、

Disassemble the 1 screws of the back cover.（Picture 5）

4
5

、

Use equipment or abandoned IC card to prize up the bezel through the bottom flute,

and rip up the bezel downwards.( as showed in the following the picture 6,7,8)

6

、

Disassemble the 4 screws and 3 pins of the Key board, remove the Key board. ( as

showed in the following the picture 9,10)

、

Remove the back cover, refer to the following picture 11,12.

7

、

Peel of the 2 AL foil and disassemble the 4 pins, as showed in the following the

8

picture 13,14,15.

9

、

Disassemble the 4 fixed screws of the panel, as showed in the following the

picture16,17

、

Lift up the main frame, and press down according to the direction of small arrowhead,

10

then lift down the LVDS connectors according to the direction of big arrowhead, refer
to the following picture 18,19.

11

、

That’s all. The disassemble process of the unit is over.

ViewSonic Corporation

- 64 –

Confidential - Do Not Cop VA1903wb/VA1903wm

9.1.3 Show pictures：

Picture 1） （Picture 2）

（

Picture 3） （Picture 4）

（

Picture 5） （Picture 6）

（

ViewSonic Corporation

- 65 –

Confidential - Do Not Cop VA1903wb/VA1903wm

（

Picture 7） （Picture 8）

（

Picture 9） （Picture 10）

Picture 11） （Picture 12）

（

ViewSonic Corporation

- 66 –

Confidential - Do Not Cop VA1903wb/VA1903wm

（

Picture 13） （Picture 14）

（

Picture 15）

（

Picture 18） （Picture 19）

Picture 16）

（

Picture 17）

（

ViewSonic Corporation

- 67 –

Confidential - Do Not Cop VA1903wb/VA1903wm

Picture 20

（

）

ViewSonic Corporation

- 68 –

Confidential - Do Not Cop VA1903wb/VA1903wm

10.

Block Diagram

ViewSonic Corporation

- 69 –

Confidential - Do Not Cop VA1903wb/VA1903wm

11. Schematic Diagram

11.1 Top

TSUM16AL-1 SCHEMATIC

VCC3.3

XGA/SXGA/WSXGA

B3

+5V

+5V

GNDR

GNDG

SOG

GNDB

HSYNC

VSYNC
DDCA_SDA
DDCA_SCL

DET_VGA

DDC_WP

RIN

GIN

BIN

B4

RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC
DDCA_SDA
DDCA_SCL
DET_VGA

DDC_WP

LVDS OUTPUT

VCC1.8

VCC3.3

+12V

VCC3.3

+5V

VCC1.8

+5V

+12V

3.INP UT

+12V

B2

VCC1.8

+5V

on_BACKLIGH T

on_Panel

+12V Adj_BL2

VCC1.8

Adj_BACKLIGH T

+5V
VCC3.3

VLCD

VLCD

2.PO WER

on_BACKLIGH T
on_Panel

Adj_BL2

Adj_BACKLIGH T

4.SCALER

PA[0.. 9]

PB[0.. 9]

B5

PA[0.. 9]

PB[0.. 9]

PB[0.. 9]

5.PANEL INTERFACE

VLCD

VLCDPA[0.. 9]

ViewSonic Corporation

Tit le

Size Document N umber Rev

C

Date: Sheet

G2467-B-X-X-1-20061124

1 Contents

715G2467-A for VA1903WM

15Friday , Nov ember 24, 2006

A

of

- 70 –

Confidential - Do Not Cop VA1903wb/VA1903wm

11.2 P owe r

CN701

1
2
3
4
5
6
7
8
9

CONN

New Power port define

D701

For 15"

Over 15"

on_Panel4

SMAL140

+12V

+5V

+5V3,4

C702

+

C701

+

X

+5V

R710

10K 1/16W

51K 1/16W
Q704
PMBS3906

100uF/50V

U701

LD1117S33
SOT-223

R711

100uF/25V

C707

0.1uF

X

R708

10K 1/16W

R709

4K7 1/16W

C709

0.1uF/16V

The type of R709 ,R712
ARE 0603

+12V 4

X

VLCD5

0.1uF/ 16V

C710

R702
4K7 1/16W

C703
1F 6.3V

R717
NC/4K7 1/16W

C713

NC/1uF

C704

0.1uF/ 16V

+5V

R701

1K 1/16W

Q701
PMBS3904

+5V

R716

NC/1K 1/16W

Q705

NC/P MBS3904

C705

100uF/25V

X

VLCD

Q703

+5V

AO3401

+

C711
10uF/16V

BL_ADJ
P W M
D C

+5V

R704

10K 1/16W

Q702
PMBS3904

R712

10K 1/10W 5%

R31

C32
N.C

47
4K7

1uF

R703 4K7 1/16W

R718
NC/ 1K 1/16W

R705 4K7 1/16W

R720

NC/ 1K 1/16W

R713

X

0

Adj_BACKLIGHT 4

R715 NC/4K7 1/16W

R719

NC/1K 1/16W

R721
10K 1/16W

on_BACKLIGH T 4

11/16/06 :

R714

X

0

The type of R707 and R706 are 1206
The type of R713 and R714 are 1206

SOT-223

R707 NC

U701

3 2

VI VO

C705

0.1uF/16V

SOT-223

U702

3 2

VI VO

C707

0.1uF/ 16V

+

+

C706
10uF/50V

C708
10uF/50V

GND

1

AP1117E33LA SOT223-3L ATC

GND

1

IC AI C1117A-18PYTR-R SOT223

VCC3. 3

VCC1. 8

VCC3. 3 4

The Current of VCC3.3 ( with
support 1.8V) is arround

382.6mA. U702 is n't safe to
use 1117 SOR223.

The Current of VCC3.3 (
without support 1.8V) is
arround 196.6mA. U702 is
safe to use 1117 SOR223.

VCC1. 8 4

The Current of VCC1.8 is
arround 184.9mA. U? is safe
to use 1117 SOR223.

+5V3,4

Adj_BL2 4

+5V

D701

SMAL140

R706

NC

發　癹隔

For 15", Power Board will support +3.3V.
And D701, C707, U701, C705, C709 should replace
to R713 and R714.

Titl e

Size Document Number Rev

B

Date: Sheet

G2467-B-X-X-1-20061124

Power

715G2467-A for VA1903WM

25Wednesday , Nov ember 29, 2006

A

of

ViewSonic Corporation

- 71 –

Confidential - Do Not Cop VA1903wb/VA1903wm

7

11.3 Input

CN401
DB15

1 2

11

12

13

14

15

HSI

VSI

ZD403

1

16

UDZS5.6B

1
6
2
7
3
8
4
9
5
10

UDZS5.6B

RED+
RED­GREEN+
GREEN­BLUE+
BLUE-

PC5V
VGA_CON

ZD402

1 2

PC5V

ZD404

UDZS5.6B

1 2

3

D401
BAV99

C401 0.1uF/ 16V

1

2

D402
BAV99

1

R413

2K2 1/16W

3

D403
BAV99

1

2

C411

33pF

UDZS5.6B

3

C402 0.1uF/ 16VC403 0.1uF /16V

2

ZD407

ESD_5V

R415

2K2 1/16W

+5V

R422

1K 1/16W

1 2

R401

75 1/16W

R402

75 1/16W

R414 1K 1/16WFB404 120 OHM

R416 1K 1/16W

C412

220pF

ZD405

UDZS5.6B

1 2

FB401
0R05 1/10W
FB402
0R05 1/10W
FB403
0R05 1/10W 5%

The type of FB410, FB411 and FB412 are 0603

R403

75 1/16W

+5V

+5V 2,4

R411

10K 1/16W

R412 20K 1/ 16W

ZD401

UDZS5.6B

1 2

ZD406

UDZS5.6B

1 2

SCL_VGA
SDA_VGA

R404
56Ω 1% 1/16W
R406
56Ω 1% 1/16W
R408
56Ω 1% 1/16W

R410 470R 1/16W

R405 100R 1/16W

R407 100R 1/16W

R409 100R 1/16W

R419 47R 1/16W
R417 47R 1/16W

DDCA_SDA4
DDCA_SCL4

C404 0.047uF

C406 0.047uF

C408 0.047uF

C410 0.047uF

C405 0.047uF

C407 0.047uF

C409 0.047uF

DET_VGA 4

HSYNC 4

VSYNC 4

R418

R420

10K 1/16W

10K 1/16W

+5V

2

R421

10K 1/16W

RIN 4

GIN 4

BIN 4

SOG 4

GNDR 4

GNDG 4

GNDB 4

PC5V

1

3

8
7
6

AF24BC02-SI

D412

BAV70

U403

VCC
WP
SCL

C413

0.22uF

1

A0

2

A1

3

A2

45

VSSSDA

DDC_WP 4

Tit le

Size Document Number Rev

B

Date: Sheet

G2467-B-X-X-1-20061124

INPUT

715G2467-A for VA1903WM

35Wednesday, N ovember 29, 2006

A

of

- 72 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm

11.4 Scaler

VCC3.3

R509

10K 1/16W

SDA_DB

R507 10R 1/16W

SCL_DB

R508 10R 1/16W

WP

+5V

D414

+

C426
10uF/16V

NC/LL4148

R445

10K 1/16W

ZD412

C428 22pF

14.31818MHz

C429 22pF

1 2

X401

SCL_DB

SDA_DB

C427

Reset Circuit

1 2

NC/UDZS5.6B

R510

10K 1/16W

R443

C425

NC

0.22uF

R444

10K 1/16W

+5V

U405

RESET

NC

3

VCC

NC/MAX810STRG

R446 20 1/16W

R447 20 1/16W

R500

4K7 1/16W

R499

47R 1/16W

R504

4K7 1/16W

R503

47R 1/16W

GND

VCC3.3

2

1

XIN

XOU T

R501 N C

R505 N C

VPLL

8
7
3
4 5

+5V

+5V

RIN3
GNDR3
GIN3
GNDG3
SOG3
BIN3
GNDB3
HSYNC3
VSYNC3

U402

VDD
HOLD#
WP#
VSS SDI

PM25LV010A

10K 1/16W

Q408
2N7002E

Q409
2N7002E

R442

390 1/16W

SDO

CE#

SCK

C455

0.1uF/16V

R449

R502

47R 1/16W

R506

47R 1/16W

C424

0.1uF/16V

XIN

XOU T

2
1
6

AVDD_DVI

23

RIN0P

22

RIN0M

20

GIN0P

19

GIN0M

21

SOGIN0

18

BIN0P

17

BIN0M

27

HSYNC0

28

VSYNC0

30

DDCA_SDA/RS232_TX

31

DDCA_SCL/rs232_RX

15

REXT

26

REFP

25

REFM

37

SDO

38

SCZ

39

SCK

40

SDI

84

RST

96

XIN

97

XOU T

80

BYPASS

52

MODE[ 0]

53

MODE[ 1]

R451

10K 1/16W

DDCA_SCL 3

DDCA_SDA 3

AVDD_DVI

14

VMPLL

AVDD_DVI

VPLL

98

163249

AVDD_MPLL

GND

2

58112933

VOLUME

AVDD_PLL

GND

24

AVDD_ADC

GND

GND

AVDD

VDDP

GND

GND

GND

5057767983

R484 4K7 1/16W

VDDP

56

75

VDDP

VDDP

GND

GND

VDDC

51

668234

VDDP

VDDC

GPIO_P10/I2C_MCL
GPIO_P11/I2C_MDA

GND

+5V2,3

VCTRL

VDDC

VDDC

VDDC

LVA3P

LVA3M
LVACKP
LVACKM

LVA2P

LVA2M

LVA1P

LVA1M

LVA0P

LVA0M

LVB3P

LVB3M
LVBCKP
LVBCKM

LVB2P

LVB2M

LVB1P

LVB1M

LVB0P

LVB0M

GPIO_P23
GPIO_P22

GPIO_P15/PWM0
PWM2/GPIO_P24
GPIO_P27/PWM1

GPIO_P12

PWM1/GPIO_P25

RSTN
GPIO_P00/SAR1
GPIO_P01/SAR2
GPIO_P02/SAR3

GPIO_P06
GPIO_P07

PWM0/GPIO_P26

GPIO_P13
GPIO_P14

GPIO_P16/PWM2

+5V

R517

NC/1K 1/16W

81

PA0

54
55

PA1
PA2

58
59

PA3
PA4

60
61

PA5

62

PA6

63

PA7

64

PA8

65

PA9

67

PB0

68

PB1

69

PB2

70

PB3
PB4

71

PB5

72
73

PB6

74

PB7
PB8

77
78

PB9

36

NC

45

NC

46

NC

41
42

R456 22K 1/ 16W

35
47
48

R511 100 R 1/16W

85
86

87

R461 100 R 1/16W

88
89

R462 100 R 1/16W

90

R463 100 R 1/16W

91

R464 4K7 1/ 16W

R468 4K7 1/ 16W

92
93
94
95

R460 100 R 1/16W

99

44
43

R485

1K 1/16W

R486 10K 1/ 16W

Q405

PMBS3904

PA[0..9]

PB[0..9]

R472 1 00R 1/16W
R474 1 00R 1/16W
R476 1 00R 1/16W

+12V2

OUT-L+

C450
1F 6.3V

+12V

10K 1/16W

WP

KEY1
KEY2
KEY3

Volume

AUDIO_CTRL
POWER

CN403

CONN

PA[0..9] 5

PB[0..9] 5

R457

DET_VGA 3

on_BACKLIGHT 2
adj_BACKLIGHT 2

R473

10K 1/16W

Adj_BL2 2

on_PANEL 2

R475

10K 1/16W

910
78
56
34
12

C446

0.1uF/16V

Q402
PMBS3904

+5V

R516

NC/10K 1/16W

VCC3.3

U406

R477

10K 1/16W

8
7
6

M24C04-WMN6TP

R487

NC/10K 1/16W

OUT-R+

R488

NC/8K2 1/16W

DDC_WP 3

C448 0 .22uF

VCC

NC

E1

WC

E2

SCL

VSSSD A

R489
NC/10K 1/16W

AUDIO_STBY

AUDIO_MUTE

R490
NC/8K2 1/16W

10K 1/16W

1
2
3
45

The Current of
AVDD is arround

68.1 mA.(Analog)

The Current of
AVDD is arround

18.1 mA.(Digital
)

R519

10K 1/16W

VCC1.82

VCC3.32

AUDIO_CTRL

VCC3.32

OUT-L+

LED_G
POWER
KEY2
KEY3

The Current of
VPLL is arround

185.7 mA.

The Current of
VDDP is arround

43.4
mA.(Digital)

The Current of
VDDP is arround

35.9 mA.(Analog)

R469

10K 1/16W

LED_G

R514 10K 1/16W

1

D415
BAV99

2

R515 10K 1/16W

VCC3.3

3

R470

75R 1/16W

Q404

PMBS3906

R471 0R05 1/16W

+5V

R513

10K 1/16W

LED_A

The Current of VDVI is
arround 29.8
mA.(Analog)

The Current of VDVI is
arround 49.0
mA.(Digital)

The Current of
VMPLL is arround

19.3 mA.

The Current of
VPLL is arround

28.3 mA.

Q410

R512

PMBS3906

10K 1/16W

R518

NC/1K 1/16W

VCC3.3

R466

R465

240 1/16W

Q403

PMBS3906

R467 0R05 1/16W

C452

C451

NC

NC

VCC1.8

VCC3.3

VCC3.32

VCC3.3

VCC3.32

FB405

600 OHM

C441

10uF/16V

FB407

600 OHM

VCC3.3

VCC3.3

FB409

600 OHM

CN404

2
4
6

8
10
12

CONN

VDDC

VDDP

C430

0.047uF

+

600 OHM

600 OHM

C442

0.047uF

C431

0.047uF

FB408

VMPLL

1
3
5
7
9
11

FB406

C439

0.1uF/16V

VCC3.3

C443

0.047uF

C432
33pF

AVDD_DVI

C436

0.1uF/16V

C440

0.1uF/16V

OUT-R+

LED_A
KEY1

AVDD

C445

0.047uF

C433
220pF

C435

0.047uF

C437

0.1uF/16V

VPLL

C444

0.047uF

C434
220pF

C438

0.1uF/16V

ViewSonic Corporation

Title

Size Document N umber Rev

Date: Sheet

G2467-B-X-X-1-20061124

C

715G2467-A for VA1903WM

SCALER

of

45Wednesday, Nov ember 29, 2006

- 73 –

Confidential - Do Not Cop VA1903wb/VA1903wm

A

11.5 Panel Interface

PA[0.. 9]4

PB[0.. 9]4

PA[0.. 9]

PB[0. .9]

PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9

PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9

LVA3P
LVA3M
LVACKP
LVACKM
LVA2P
LVA2M
LVA1P
LVA1M
LVA0P
LVA0M

LVB3P
LVB3M
LVBCKP
LVBCKM
LVB2P
LVB2M
LVB1P
LVB1M
LVB0P
LVB0M

CN703

LVB0M
LVB1M
LVB2M
LVBCKM
LVB3M
LVA0M
LVA1M
LVA2M
LVACKM
LVA3M

VLCD2

RXO0­RXO1­RXO2­RXOC­RXO3­RXE0­RXE1­RXE2­RXEC­RXE3-

VLCD

C712

+

22uF/50V

1
3
5
7

9
11
13
15
17
19
21
23

CONN

2
4
6
8
10
12
14
16
18
20
22
24

R713

150 1/4W

RXO0+
RXO1+
RXO2+
RXOC+
RXO3+
RXE0+
RXE1+
RXE2+
RXEC+
RXE3+

LVB0P
LVB1P
LVB2P
LVBCKP
LVB3P
LVA0P
LVA1P
LVA2P
LVACKP
LVA3P

R714

150 1/4W

ViewSonic Corporation

The type of R713 & R714 is 1206

Tit le

Size D ocum ent Num ber Rev

A

Date: Sheet

- 74 –

Confidential - Do Not Cop VA1903wb/VA1903wm

G2467-B-X-X-1-20061124

PANEL INTERFACE

715G2467-A for VA1903WM

55Friday , Nov ember 24, 2006

A

of

11.6 Inve rter

+12V

R803

ON/OFF

10K 1/8W

C801

0.1uF

R808
47K 1/8W

DIM

R801
100K 1/8W

PID

C803

0.01uF

R811
NC

R802
300KΩ 1/8W

R806
10K 1/8W

C804

1uF/25V

R809
NC

Q801
PMBS3904

R812
10K 1/8W

C840

1uF/25V

C814

0.22uF/25V

Q802
PMBS3904

VCC

AOC (Top Victory) Electronics Co., Ltd.

Title

VIEWSONIC 19 '4 LAM PS INVERTER

Size Document Number Rev

G1899-1A-VS-X-2-20061211

Date: Sheet

Monday, D ecember 11, 2006

11

of

C805
1000pF

D810
1N4148W

D811
1N4148W

D812
1N4148W

D813
1N4148W

1342

CN801

CONN

1342

CN802

CONN

OPT1

OPT2

OPT3

OPT4

CN803

1342

CONN

1342

CN804

CONN

PT801

!

POWER X'FMR

5

7

3
4

R804

R805

10K 1/8W

470R 1/4W

+

Q803
PMBS3904

C811

R813
1M 1/8W

470UF/25V

R810
1MΩ 1% 1/8W

R814

750KΩ 1/8W

R807
22R 1/4W

C806

1uF/25V

ZD801
RLZ5.6B

1 2

1

C829

0.1uF

C828

0.1uF

C817
NC

AM9945N-T1-PF

R842

5.1Ω 1/4W

C815

+

470UF/25V

R828

15Ω 1/4W

876

DDD

Q806

SGS

123

IC801

1

DRV1

2

VDDA

3

TIMER

4

DIM

5

ISEN

SSTCMP

6

VSEN

7

OVPT

8 9

NC1 NC2

OZ9938GN

R863

15Ω 1/4W

C821 NC

Q805

AM9945N-T1-PF

C822
1500PF/50V

15Ω 1/4W

R861

15Ω 1/4W

PGND
DRV2
GNDA

CT

LCT

ENA

C813
1500PF/50V

R818
15Ω 1/4W

876

DDD

SGS

123

5

D

G

4

16
15
14
13
12
11
10

C823
1500PF/50V

R829

R820 NC

R819
15Ω 1/4W

R862

15Ω 1/4W

R837

5.1Ω 1/4W

C812
1500PF/50V

5

R833 NC

D

G

4

R864
15Ω 1/4W

R815

100K 1/8W

C807

0.01uF

!

1 8

2

1

BAV99
D806

R816
1MΩ 1% 1/8W

C809

0.047uF

C808
180K 1/8W

PT802
POWER X'FMR

5

3
4

1 8

2

1

BAV99
D803

3

BAV99
D801

2

1

R817
33K 1/8W

7

3

C831
470pF/50V

C820

470pF/50V

C810

560PF/50V

3

C816
22pF/3KV

C841
22pF/3KV

C825
5pF/3KV

C824
5pF/3KV

C818

0.0033uF/16V

R823
82K 1/8W

0Ω 1/8W

R825

C834
22pF/3KV

C837
22pF/3KV

C826
5pF/3KV

C835
5pF/3KV

C827

0.0033uF/16V

Q804

RK7002

2

1

R830

82K 1/8W

C819

0.047uF

R822
3MΩ 1/2W

R827

3.6KΩ 1/8W

D809
1N4148W

D805
BAV99

3

R826

510Ω 1% 1/8W

R841

360Ω 1% 1/8W

R860
1M 1/8W

open lamp protection

C844

0.1uF

R832
3MΩ 1/2W

R831

3.6KΩ 1/8W

Q807
RK7002

Q808
RK7002

Q809
RK7002

Q810
RK7002

BAV99
D802

R846
1M 1/8W

R847
1M 1/8W

R848
1M 1/8W

R849
1M 1/8W

OPT1

R836
1K 1/8W

OPT2

2

3

1

2

1

OPT3

D804

BAV99

C838

0.1uF

C839

0.1uF

C842

0.1uF

C843

0.1uF

3

R858
750Ω 1/8W

R853
4K7 1/8W

R852
4K7 1/8W

R850
4K7 1/8W

R851
4K7 1/8W

OPT4

R824
750Ω 1/8W

R843
1K 1/8W

ViewSonic Corporation

- 75 –

Confidential - Do Not Cop VA1903wb/VA1903wm

11.7 A-D Power

2

BD901
GBU408

+

4

L901

R901

680KΩ 1/4W

-

NC

3

4

3

L

1

2

VAR901

4

3

L

1

2

C903

0.47uF/275V

R902

680KΩ 1/4W

3

1

L902

R903

680KΩ 1/4W

CN901

12

SOCKET

1000pF

NR901

NTCR

t

F901

FUSE

C902

+

C901
1000PF/25 0VAC

!

C905
100uF/450 V

C908

0.1uF

1
2
3
4 5

R913

100KΩ 1% 1/8W

ZD906

NC

Over voltage protection

1 2

R941
NC

C913
NC

R931

3.9KΩ 1/4W

R904

3.9KΩ 1/4W

R938

3.9KΩ 1/4W

IC901

RT
COMP
CS

VCC

GNDOUT

LD7575PS

R934
47Ω 1/4W
R935

2

D908
SP20150

D909

3

SP20100

2

C932

0.0015uF/2KV

1

C933

0.0015uF/2KV

R920
1K 1/8W

C918

0.1uF

R921
1K 1/8W

47Ω 1/4W

C934

JUMP

C935
470UF/25V

R937
100Ω 1/4W
R936
100Ω 1/4W
R916
100Ω 1/4W

Over voltage protection

ZD901
RLZ13B

1 2

R926
1K 1/8W

C931

0.001uF/ 1KV

C936

+

470UF/ 25V

+

1 2

ZD902
RLZ5.6B

+

C912
470UF/ 25V

C904

+

470UF/ 25V

R927
10KΩ 1/4W

C919

0.1uF

R922
1K 1/8W

R928

1 2

ZD903
PTZ9.1B

C916

0.1uF

0Ω 1/4W

ON/OF F

R932
0Ω 1/4W

DIM

+12V

+5V

CN902

12

ON/OFF

11

DIM

10

NC

9

GND

8

GND

7

GND

6

GND

5

GND

4

+5V

3

+5V

2

+12V

1

+12V

C917

0.1uF

11

L903

3.5uH

C937

470UF/ 25V

+

L904

3.5uH

R925
3K6 1/8W

TPV (Top Victory) Electronics Co., Ltd.

Tit le

Size Document Number Rev

Date: Sheet of

+

C911
470UF/ 25V

R923
33K 1/8W

R924

2.4KΩ 1% 1/8W

1.POWER OUTPUT 12V & 5 V

G1899-1A-VS-X-2-20061211

Thursday, D ecember 14, 2006

1

R905
100KOHM +-5% 2w

C930

0.0015uF /2KV

D903

0R05 1/4W

C907

+

R910
22R 1/4W

TO PI N3

C909
220pF

D904
LL4148

ZD904
RLZ18B

NC

1 2

R911
1K 1/4W

C910
470pF/50V

ZD905
NC

1 2

TO PI N3

8

HV

7

NC

6

R939
NC

IC904
NC

D901
FR107

D902
FR103

+

Q903
STP10NK70ZFP

R912
10K 1/8W

12

FB901
BEAD

Over current protection

R914

0.47 OHM +-5% 2w

C906
22uF/50V

R909

5.1Ω 1/4W

80GL17T 37 L GP

!

T901

6

5

4
2

1

POWER X'FMR

C900

0.0022uF/ 250V

43

R906

47Ω 1/4W

R919
470R 1/4W

IC902

12

TCET1103G

IC903
H431BA

3

1

9
10

7
8

11
12

ViewSonic Corporation

- 76 –

Confidential - Do Not Cop VA1903wb/VA1903wm

11.8 Audio

CN203

OUT_L

+12V

4
3
2
1

CN204

NC/CONN

CN201

PHONEJ ACK

CN202

1

1

2

2

3
1
2
3

GND

1
2
3
4
5

R201 18K 1/ 10W

R203 18K 1/ 10W

GND

C211

100pF

R210

20K 1/10W

VOLUME

R211

20K 1/10W

+12V

C214

NC

R212 220K 1/ 10W

C212

1uF/50V

100pF

C209

+

MUTE

C210

10uF/25V

GND

C204 0. 47uF/25V

C206 0. 47uF/25V

+

GND

4

5

STANDBY

C213

0.1uF

3
4
5

CONN

11

12

4

9

6

INL

INR

VOLUME

STBY

MUTE

6
7
8
9

10

GND

123

6
7
8
9
10

8

NC

GND

15

16

VS

VAROUT_R

VAROUT_L

GND

GND

GND

13

181920

GND

VS

OUTR

GND

OUTL

SVR

GND

U201

17

14

10

7

5

C208

470uF/25V

C201

+

470uF/25V

+

GNDGND

R202

C202

+

470uF/25V

200K 1/ 10W

GND

R207

1K 1/ 10W

R208

1K 1/ 10W

C203

0.1uF

+

+

C205
470uF/16V

C207
470uF/16V

GND

OUT _R

NC/CONN

ViewSonic Corporation

Tit le

715G2472-A For VA1903WM AUDIO

Size Document Number Rev

<Doc > 1

A

11Monday, Nov ember 27, 2006

Date: Sheet

of

- 77 –

Confidential - Do Not Cop VA1903wb/VA1903wm

11.9 Key Pad

SW001

SW

21

3 4

3 4

5

SW002

SW

5

21

SW003

SW

3 4

5

21

SW004

SW

3 4

5

21

SW005

SW

3 4

5

KEY_MENU
KEY_AU TO
POWER_KEY
KEY_D OWN_LEFT
KEY_U P_RIGHT

LED_ORAN GE
LED_GREEN

21

C001NC/ 0.1uF /16V

1 2

1

3

C002NC/ 0.1uF /16V

ZD001

LED001

2

NC/ EGA10603V05A1-B

LED

ZD002

1 2

NC/ EGA10603V05A1-B

KEY2

KEY1

GND

VCC_5V

FB01

R0013K9 1/10W

R0023K9 1/10W

R0033K9 1/10W

KEY_D OWN_LEFT

KEY_AU TO

R005 1K 1/10W

C003NC/ 0.1uF/ 16V

C004NC/ 0.1uF/ 16V

D001NC/RLZ36B

1 2

GND

C005NC/ 0.1uF/ 16V

D002NC/RLZ36B

1 2

D003NC/RLZ36B

1 2

KEY_U P_RIGHT

KEY_MENU

C006

NC/ 100pF

120 OHM

POWER_KEY
LED_GREEN
LED_ORAN GE

Out-L

CN001

2
4
6

8
10
12

CONN

Tit le

Size Doc ument N umber Rev

A

Date: Sheet

VCC_5V

1

KEY3

3

KEY2

5

KEY1

7
9
11

Out-R

120 OHM

FB02

SPKR_L+

SPKR_R+

C007

NC/ 100pF

GND

1
2

1
2KEY3

KEY PAD

715G2473-A for VA1903WM KEY

11Friday , Nov ember 24, 2006

of

CN002
CONN

CN003

CONN

B

ViewSonic Corporation

- 78 –

Confidential - Do Not Cop VA1903wb/VA1903wm

12. PCB Layout Diagram

12.1 MAIN BOARD PCB TOP VIEW

ViewSonic Corporation

- 79 –

Confidential - Do Not Cop VA1903wb/VA1903wm

12.2 MAIN BOARD PCB BUTTON VIEW

ViewSonic Corporation

- 80 –

Confidential - Do Not Cop VA1903wb/VA1903wm

ViewSonic Corporation

- 81 –

Confidential - Do Not Cop VA1903wb/VA1903wm

12..3 POWER PCB TOP VIEW

ViewSonic Corporation

- 82 –

Confidential - Do Not Cop VA1903wb/VA1903wm

12.4 POWER PCB BUTTON VIEW

ViewSonic Corporation

- 83 –

Confidential - Do Not Cop VA1903wb/VA1903wm

12.5 KEY BOARD TOP VIEW

12.6 KEY BOARD BUTTON VIEW

ViewSonic Corporation

- 84 –

Confidential - Do Not Cop VA1903wb/VA1903wm

J %FD

12.7 AUDIO PCB TOP VIEW & BUTTON VIEW

ViewSonic Corporation

- 85 –

Confidential - Do Not Cop VA1903wb/VA1903wm

*

Reader’s Response

Dear Readers:

Thank you in advance for you feedback on our Service Manual, which allows continuous
improvement of our products. We would appreciate your completion of the Assessment Matrix
below, for return to ViewSonic Corporation.

*

Assessment

A. What do you think about the content after reading VA1903wb/VA1903wm Service Manual?

Unit Excellent Good Fair Bad

1. Precautions And Safety Notice

2. Specification

3. Front Panel Control and Indicators

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram And Spare Parts List

9. Block Diagram

10. Schematic Diagram

11. PCB Layout Diagram

B. Are you satisfied with the VA1903wb/VA1903wm Service Manual?

Item Excellent Good Fair Bad

1. Service Manual Content

2. Service Manual Layout

3. The form and listing

C. Do you have any opinion and suggestion about this Service Manual?

Reader’s Basic Data

:

Name: Title:

Company:

Add:

Tel : F ax :

E-Mail:

After completing this form, please return it to ViewSonic Quality Assurance in the USA at
facsimile 1-909-839-7943. You may also e-mail any suggestion to the Director, Quality System
& Process ([e-mail])

- 86 –

ViewSonic Corporation

Confidential - Do Not Cop VA1903wb/VA1903wm