ViewSonic VA712B - 17"" LCD Monitor, VA712-2, VA712b-2, VS10901 Service Manual

ViewSonic VA712-2

VA712b-2

Model No. VS10901

17” Color TFT LCD Display

(VA712-2_ VA712b-2_SM Rev. 1a Apr. 2006)

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

Service Manual

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Copyright

Copyright © 2006 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

Opt quest is a registered trademark of ViewSonic Corporation.

ViewSonic is a registered trademark of ViewSonic Corporation.

All other trademarks used within this document are the property of their respective owners.

Revision History

Revision SM Editing Date ECR Number Description of Changes Editor

1a 4/12/2006 Initial Release Jamie Chang

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TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 4

3. Front Panel Function Control Description 8

4. Circuit Description 14

5. Adjustment Procedure 26

6. Troubleshooting Flow Chart 49

7. Recommended Spare Parts List 50

8. Exploded Diagram and Exploded Parts List 56

9. Block Diagram 60

10. Schematic Diagrams 61

11. PCB Layout Diagrams 69

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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 refers to also user’s manual.

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

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.”

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

The panel is placed facedown on the lap. That
may cause “Mura.”

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2. Specification

2.1 PRODUCT SPECIFICATIONS

LCD Panel 17.0” TFT

Recommend Resolution

1280 x1024@60Hz

Pixel Dimension 0.264(H) x 0.264(V)mm

LCD Display Color 16.2M Colors (RGB 6-bit+FRC data)

Viewing Angle

Horizontal: 140 °

Vertical: 130 °

Contrast Ratio

500：1 (Typ.)

Brightness

300 cd/㎡(Typ.)

Response Time 8ms(Typ.)

Active Display Area 337.9mm(H) x 270.3mm(V)

Maximum Pixel Clock 135 MHz

Horizontal Frequency

30 – 82 kHz

Vertical Refresh Rate

50 – 85 Hz.

Temperature

Operating: 0°C to +40°C

Storage: -20°C to +60°C

Input Signal Analog / Digital

Power Management

Energy Star compliant VESA

DPMS compatible

≦1 W

Power

Input Voltage : 90V~264ACV，50~60Hz(auto switch)

Consumption: 39 Watts(Max.) 36 Watts(Typ.)

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2.2 FACTORY SUPPORTING MODES
Timing Table :

Item Timing Analog Digital

1 640 x 350 @ 70Hz, 31.5kHz Yes Yes

2 640 x 480 @ 60Hz, 31.5kHz Yes Yes

3 640 x 480 @ 67Hz, 35.0kHz Yes Yes

4 640 x 480 @ 72Hz, 37.9kHz Yes Yes

5 640 x 480 @ 75Hz, 37.5kHz Yes Yes

6 640 x 480 @ 85Hz, 43.27kHz Yes Yes

7 720 x 400 @ 70Hz, 31.5kHz Yes Yes

8 800 x 600 @ 56Hz, 35.1kHz Yes Yes

9 800 x 600 @ 60Hz, 37.9kHz Yes Yes

10 800 x 600 @ 72Hz, 48.1kHz Yes Yes

11 800 x 600 @ 75Hz, 46.9kHz Yes Yes

12 800 x 600 @ 85Hz, 53.7kHz Yes Yes

13 832 x 624 @ 75Hz, 49.7kHz Yes Yes

14 1024 x 768 @ 60Hz, 48.4kHz Yes Yes

15 1024 x 768 @ 70Hz, 56.5kHz Yes Yes

16 1024 x 768 @ 72Hz, 58.1kHz Yes Yes

17 1024 x 768 @ 75Hz, 60.0kHz Yes Yes

18 1024 x 768 @ 85Hz, 68.67kHz Yes Yes

19 1152 x 870 @ 75Hz, 68.6kHz Yes Yes

20 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes

21 1280 x 1024 @ 75Hz, 79.97kHz Yes Yes

22 1280 x 720 @ 60Hz, 45kHz Yes Yes

Primary Preset:：VESA : 1280 x1024@60Hz

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2.3 INTERFACE DESCRIPTION

D-SUB 15 PIN CONNECTOR

15

6

10

11 15

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 connection

12 (SDA)

13

Horizontal sync (Composite

sync)

14 Vertical sync

15 (SCL)

SIGNAL LEVEL

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DVI-D 24 PIN CONNECTOR

Pin No. Signal Name Description

1 RX2- TMDS negative differential input, channel 2

2 RX2+ TMDS positive differential input, channel 2

3 GND Logic Ground

4 Reserved 4 Reserved. No connection

5 Reserved 5 Reserved. No connection

6 DDC-CLK DDC2B Clock

7 DDC-DAT DDC2B Data

8 Reserved 8 Reserved. No connection

9 RX1- TMDS negative differential input, channel 1

10 RX1+ TMDS positive differential input, channel 1

11 GND Logic Ground

12 Reserved 12 Reserved. No connection

13 Reserved 13 Reserved. No connection

14 VCCX Power

15 GND Logic Ground

16 SENS SENSE Pin, Pull High

17 RX0- TMDS negative differential input, channel 0

18 RX0+ TMDS positive differential input, channel 0

19 GND Logic Ground

20 Reserved 20 Reserved. No connection

21 Reserved 21 Reserved. No connection

22 GND Logic Ground

23 RXC+ TMDS positive differential input, reference clock

24 RXC- TMDS negative differential input, reference clock

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3. Front Panel Function Control Description

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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 command line at the bottom of the control screen

tells what to do next from this screen. You can toggle

between control screens, adjust the selected option, or

exit the screen.

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

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

The following tips may help you optimize your display:

• Adjust the computer's graphics card so that it outputs a 1280 x 1024 @ 60Hz video signal to the

LCD display. (Look for instructions on “changing the refresh rate” in the graphics card's user

guide.)

• If necessary, make small adjustments using H. POSITION and V. POSITION until the screen

image is completely visible. (The black border around the edge of the screen should barely

touch the illuminated “active area” of the LCD display.)

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Main Menu Controls

Adjust the menu items shown below by using the up and down buttons.

Control Explanation

Auto Image Adjust sizes and centers the screen image automatically.
Contrast adjusts the difference between the image background (black level)

and the foreground (white level).

Brightness adjusts background black level of the screen image.
Input Select allows the user to toggle between an analog and a digital signal.

Audio Adjust
Volume increases the volume, decreases the volume, and mutes the audio.
Mute temporarily silences audio output.
Color Adjust provides several color adjustment modes, including preset color

temperatures and a User Color mode which allows independent adjustment of

red (R), green (G), and blue (B). The factory setting for this product is 6500K

(6500 Kelvin).

9300K-Adds blue to the screen image for cooler white (used in most office

settings with fluorescent lighting).

6500K-Adds red to the screen image for warmer white and richer red.
5400K-Adds green to the screen image for a darker color.
5000K-Adds blue and green to the screen image for a darker color.
User Color Individual adjustments for red (R), green (G), and blue (B).

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

2. To adjust selected color, 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.

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Information displays the timing mode (video signal input) coming from the

graphics card in the computer, the LCD model number, the serial number, and

the ViewSonic® website URL. See your graphics card’s user guide for
instructions on changing the resolution and refresh rate (vertical frequency).

NOTE: VESA 1280 x 1024 @ 60Hz (recommended) means that the resolution

is 1280 x 1024 and the refresh rate is 60 Hertz.

Manual Image Adjust Sub-menu

H. Size (Horizontal Size) adjusts the width of the screen image.
H./V. Position (Horizontal/Vertical Position) moves the screen image left or

right and up or down.

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

boundaries.

NOTE: Try Auto Image Adjust first.
Sharpness adjusts the clarity and focus of the screen image.

Setup Menu displays the menu shown below:

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Language Select allows the user to choose the language used in the menus
and control screens.
Resolution Notice allows the user to enable or disable this notice.

If you enable the Resolution Notice shown above and your computer is set at a

resolution other than 1280 x 1024, the following screen appears.

OSD Position allows the user to move the OSD menus and control screens.
OSD Timeout sets the length of time the OSD screen is displayed. For

example, with a “30 second” setting, if a control is not pushed within 30

seconds, the display screen disappears.

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.

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SHORT CUTS FUNCTION FROM THE BUTTONS

[1] Main Menu

[2] Auto Image Adjust

[▼] or [▲]

To immediately activate Contrast menu. It should be

change to Brightness OSD by push button [2]

[▼] + [▲]

Recall Contrast or Brightness while in the Contrast or

Brightness adjustment, or recall both of Contrast and

Brightness when the OSD is not open.

[1] + [2]

Toggle 720x400 and 640x400 mode when input 720x400

or 640x400 mode

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

[1] + [▼]

• Power Lock: Press and hold “[2], & ▼” for 10 seconds. If

the power button is pressed the message Power Button

Locked will display for 5 seconds. With or without this

setting, after a power failure, your LCD display’s power

will automatically turn ON when power is restored.

• Power Unlock: Press and hold “[2], & ▼” again for 10

seconds.

[1] + [▲]

• OSD Lock: Press and hold "[1], & (▲)" for 10 seconds. If

any buttons are pressed the message OSD Locked will

display for 5 seconds.

• OSD Unlock: Press and hold “[1], & ▲” again for 10

seconds.

[;U] Volume mute on/off

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

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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.

The Power Board will provide AC to DC Inverter voltage to drive the backlight of panel and the

Main Board chips each voltage.

Power Board

(Include: adapter, inverter)

Flat Panel and

CCFL backlight

Main Board

Key Board

RS232 Connector
For white balance
adjustment in factory
mode

HOST Computer

CCFL Drive.

AC-IN

100V-240V

Video signal, DDC

Monitor Block Diagram

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4.2 POWER BLOCK FUNCTION DESCRIPTION

Inverter Block Function

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Power Block Function

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: 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.

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.

White Balance

Test Signal: 640*480@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.

Screen Uniformity and Flicker

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.

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

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resonance.

- Make sure that the sound of right and left speakers are in balance.

Check for Secondary Display Modes

Test Signal:

Analog: 640*350@70Hz; 640*480@60/67/72/75/85Hz;
720*400@70Hz; 800*600@56/60/72/75/85Hz;
832*624@75Hz, 1024*768@60/70/72/75/85Hz;
1280*1024@60/75Hz
Digital: 640*350@70Hz; 640*480@60/72/75/85Hz;
720*400@70Hz; 800*600@56/60/72/75/85Hz;
1024*768@60/70/72/75/85Hz; 1152*870@75Hz,
1280*720@60Hz, 1280*1024@60Hz

- Normally when the primary mode 1280*1024@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.

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4.4 INTRODUCTION OF IC

RTD2523B-LF(U401): integrate ADC, OSD, TMPS, RSDS TX, LVDS TX, convert

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

PIN Function:

AIC1084-33PM (U701): DC power convert, used to 5v convert 3.3v.

Pin Symbol Description

127 XO Crystal OSC output
128 XI Reference clock input from external crystal or from

single-ended CMOS/TTL OSC（3.3V tolerance）

50

DDCSCL1（ADC） Open drain（Internal 75K pull high）

51

DDCSDA1（ADC） Open drain（Internal 75K pull high）

121

DDCSCL2（DVI） Open drain（Internal 75K pull high）

120

DDCSDA2（DVI） Open drain（Internal 75K pull high）

123 RESET_OUT Reset out Open drain( internal 75KOhm high)

110/48 COUT Crystal out

124 33VRST_REF Reference 3.3V for Reset Out
109 33VPNLOUT

Panel on/off switch out （Max current driving 1A）

58 BJT_B Embedded regulator P type BJT control pin out

5 TMDS_TST TMDS_TEST Pin;

Power-on-latch for host interface type.

7/13 TMDS_VDD

TMDS power（3.3V）

6 REXT Impedance Match Reference.

49/112 PWM2

4/48/111 PWM1

3/5/122 PWM0

4 BYPASS For External Bypass Capacitor

125 DPLL_VDD

Power for digital PLL（3.3V）

2 APLL_VDD

Power for multi-phase PLL（3.3V）

3 PLL_TEST1 Test Pin 1;Power-on-latch for MCU crystal location
4 PLL_TEST2 Test Pin 2;Power-on-latch for crystal in frequency

56/118 SCSB

Serial control I/F chip select（Open drain）

57/119 SCLK

Serial control I/F clock（Open drain）

59/83/108 Pad 3.3V Power PVCC

47/116 Digital 1.8V Power VCCK

21/38 ADC_VDD

ADC Power（1.8V）

40 VCLK Video8 Clock
19 AVSO ADC vertical sync input

5V tolerance
Power from PIN 13

20 AHSO ADC horizontal sync input

Adjustable Schmidt trigger 5V tolerance
Power from PIN 13

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MTV512GMV64 (U402): The MTV512M micro-controller is an 8051 CPU core

embedded device especially tailored for flat panel display applications. It
includes an 8051 CPU core, 768-byte SRAM, 4 channels of 6-bit ADC, 3
external counters/timers, 6 channels of PWM DAC, VESA DDC interface,
and a 64K-byte internal program Flash-ROM memory.

Circuit Diagram

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PIN Function

Pin No.

Name

PLCC QFP

DESCRIPTION

NC 1 39

No connection

DA0/P5.0 2 40

PWM DAC output/General purpose I/O (open drain)

DA1/P5.1 3 41

PWM DAC output/General purpose I/O (open drain)

DA2/P5.2 4 42

PWM DAC output/General purpose I/O (open drain)

DA3/P5.3 5 43

PWM DAC output/General purpose I/O (open drain)

DA4/P5.4 6 44

PWM DAC output/General purpose I/O (open drain)

DA5/P5.5 7 1

PWM DAC output/General purpose I/O (open drain)

P5.6/HSCL2 8 2

General purpose I/O/Slave llC1 SCL2（open drain）

P5.7/HSDA2 9 3

General purpose Output/Slave llC1 SCL2（open drain）

RST 10 4

High Active RESET

HSCL1/P3.0/RXD 11 5

Slave IIC clock/General purpose I/O/Rxd (open drain)

HSDA1/P3.1/RXD 13 7

Slave IIC clock/General purpose I/O/Txd (open drain)

P3.2/INT0 14 8

General purpose I/O/External interrupt 0(Standard 8051)

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P3.3/INT1 15 9

General purpose I/O/External interrupt 1(Standard 8051)

P3.4/T0 16 10

General purpose I/O/T0 Ext. Counter/Timer 0(Standard8051)

P3.5/T1 17 11

General purpose I/O/T1 Ext. Counter/Timer 1(Standard8051)

P7.6/CLKO2 18 12

General purpose I/O/Clock out 2 (CMOS)

P7.7 19 13

General purpose I/O (CMOS)

X2 20 14

Crystal Out

X1 21 15

Crystal In

VSS 22 16

Ground

P6.0/AD0 24 18

General purpose I/O(COMS)/6-bit ADC channel 0 input

P6.1/AD1 25 19

General purpose I/O(COMS)/6-bit ADC channel 1 input

P6.2/AD2 26 20

General purpose I/O(COMS)/6-bit ADC channel 2 input

P6.3/AD3 27 21

General purpose I/O(COMS)/6-bit ADC channel 3 input

P6.4 28 22

General purpose I/O(COMS)

P6.5 29 23

General purpose I/O(COMS)

P6.6/CLKO1 30 24

General purpose I/OCLKO1(COMS)

P6.7 31 25

General purpose I/O(COMS)

VSYNC 32 26

VSYNC input

P1.7 36 30

General purpose I/O(Standard 8051/CMOS)

P1.6 37 31

General purpose I/O(Standard 8051/CMOS)

P1.5 38 32

General purpose I/O(Standard 8051/CMOS)

P1.4 39 33

General purpose I/O(Standard 8051/CMOS)

P1.3 40 34

General purpose I/O(Standard 8051/CMOS)

P1.2 41 35

General purpose I/O(Standard 8051/CMOS)

P1.1 42 36

General purpose I/O(Standard 8051/CMOS)

P1.0/ET2

43

37

General purpose I/O/External Counter/Timer2(Standard
8051/CMOS)

VCC 44 38

3.3V power

TDA7496L (U201): The UTC 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.

Pin Function

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Circuit Diagram

LD7552BS (IC901): PWM control, high-voltage startup current. The circuit unit has

functions such as over-current protection, over-voltage protection, output short-circuit
protection and etc. The function of each pin and the inside circuit diagram are as

follows:

Pin Name Function

1 GND Ground

2 COMP

Voltage feedback pin (same as the COMP pin in UC384X), By
connecting a photo-coupler to close the control loop and achieve the
regulation

3 VCC Supply voltage pin

4 RT

This pin is to program the switching frequency. By connecting a resistor

to ground to set the switching frequency.
6 NC Unconnected pin
7 VCC Supply voltage pin
8 OUT Gate drive output to drive the external MOSFET

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FAN7547A(IC201): The FAN7547A provides all control functions for a current fed

push-pull self oscillation type converter, and also contains voltage. Typical
operating frequency range is between 30kHz depending on the CCFL(Cold

Cathode Fluorescent Lamp) and the transformer’s characteristics:

NO. Name Function Description NO. Name Function Description

1 GNDT Ground 8 FB Feedback Input

2 Vds Dimming Voltage Input 9 COMP Error Amplifier Output

3 Vref Reference Voltage 10 S/S Soft Start

4 Vms Dimming Mode Selection 11 OSC Main Ct

5 Rct

Burst Dimming Frequency
Set

12 Vcc Supply Voltage

6 OLP Open Lamp Protection 13 Vcc1 Output Drive Source Voltage

7 SDP Shutdown Protection 14 OUT Output Drive

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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 ±0.02;Wy = 0.298 ±0.02;

Y > 190 cd/m

2 ,

B、MEM.CHANNEL10 ( 6500 color):

6500 color temp. parameter is Wx = 0.313±0.02;Wy = 0.329 ±0.02;

Y > 260 cd/m

2,

C、MEM.CHANNEL 11 ( 5400 color):

5400 color temp. parameter is Wx = 0.335±0.02;Wy = 0.350 ±0.02;

Y > 210 cd/m

2,

D、MEM.CHANNEL 12 ( 5000 color):

5000 color temp. parameter is Wx = 0.346±0.02;Wy = 0.359 ±0.02;

Y > 210 cd/m

2

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E、MEM.CHANNEL13 ( SRGB color):

SRGB color temp. parameter is Wx = 0.313±0.02;Wy = 0.329 ±0.02;

Y > 220 cd/m2,

3.)Into factory mode of VA712b-2

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 to 70
Adjust the Brightness 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 ±0.02, y =0.298 ±0.02, Y >

250 cd/m2

(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 ±0.02, y = 0.329 ±0.02, Y>260

cd/m2

(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

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(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

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 ±0.02, y = 0.350 ±0.02, Y>210

cd/m2

(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 5000 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 = 0.346 ±0.02, y = 0.359 ±0.02, Y>210

cd/m

2

(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、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 ±0.02, y = 0.329 ±0.02, Y>220

cd/m

2

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(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.

5.4 Factory Defaults

Item Defaults Item Defaults

Contrast 70% OSD H. Position 50%

Brightness 100% OSD V. Position 50%

Volume 50% OSD Time Out 15 Sec

Color Temperature 6500K Resolution Notice Enable

Sharpness 33% OSD background Enable

720X400/640X400 720X400

5.5 Function Test

1 Product: 17” 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=85Hz)

800*600 (H=53.7kHz, V=85Hz)

1024*768 (H=68.67kHz, V=85Hz)

1280*1024 (H=79.97kHz, V=75Hz)

4 Test Display Modes & Pattern

Compatible Modes

Analog Digital

640 x 350 @ 70Hz, 31.5kHz
640 x 400 @ 70Hz, 31.5kHz
640 x 480 @ 60Hz, 31.5kHz
640 x 480 @ 67Hz, 35.0kHz
640 x 480 @ 72Hz, 37.9kHz
640 x 480 @ 75Hz, 37.5kHz
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
832 x 624 @ 75Hz, 49.7kHz
1024 x 768 @ 60Hz, 48.4kHz
1024 x 768 @ 70Hz, 56.5kHz
1024 x 768 @ 72Hz, 58.1kHz
1024 x 768 @ 75Hz, 60.0kHz
1280 x 1024 @ 60Hz, 63.4kHz
1280 x 1024 @ 75Hz, 79.97kHz
1280x 720 @ 60Hz, 45kHz

640 x 350 @ 70Hz, 31.5kHz
640 x 400 @ 70Hz, 31.5kHz
640 x 480 @ 60Hz, 31.5kHz
640 x 480 @ 67Hz, 35.0kHz
640 x 480 @ 72Hz, 37.9kHz
640 x 480 @ 75Hz, 37.5kHz
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
832 x 624 @ 75Hz, 49.7kHz
1024 x 768 @ 60Hz, 48.4kHz
1024 x 768 @ 70Hz, 56.5kHz
1024 x 768 @ 72Hz, 58.1kHz
1024 x 768 @ 75Hz, 60.0kHz
1280 x 1024 @ 60Hz, 63.4kHz
1280 x 1024 @ 75Hz, 79.97kHz
1280x 720 @ 60Hz, 45kHz

Function Test Display Pattern

Item Test Content Pattern Specification Remark

1

Frequency &
Tracking

Fine Line Moire

Eliminate visual wavy
noise.

Figure 1

2

Contrast/Bright
ness

16 Gray Scale

16 gray levels sh 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 White & Black Pattern

The screen must have
the pure white and black
pattern, no other color.

Figure 9

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

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

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

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

Black-White Pattern (Figure 9)

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5.6 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.

1 Equipment Needed

- VA712-2/VA712b-2 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

2 Setup Procedure

2.1 Connect P1 of Fixture with printer port of PC by LPT Cable.

2.2 Connect P2 of Fixture with VA712-2/VA712b-2 Monitor by VGA Cable.

2.3 Connect Power Cord to VA712-2/VA712b-2 Monitor.

2.4 Connect P3 to the Signal Generator (eg.Chroma2326) for verifying it after the
operation being completed.

2.5 Connect PC to the additional monitor.

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3 Firmware Upgrade Procedure

Step 1. Let VA712-2/VA712b-2 set to be connected with AC cable and VGA cable.

Step 2.Execute the MSstar ISP tool.

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Step 3. Click “Create Security File” button. Open a new window to key in security code.

Step 4.Set “Command NO” to 4

,and key in security code :“94,94,ac,ca,53” to shown as

following, then press “OK” button to close window.

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Step 5. Click dropdown listbox for MTV type, select the “MTV512M64” viewed on your
set.

Step 6. Click “Load MCU File” button. Select the object bincode on your corresponding
directory.

Step 7. Click “确定” button to finish the selection of bincode.

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Step 8. Select “Auto” optionbutton, then execute the flashing action by clicking the
“RUN” button.

Step 9. If the flashing F/W has been completed, the message of “Check MCU CRC OK”
on the right TextBox means the Host verify ok for the progress of program.

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Step 10. Unplug and replug power cord of VA712-2/VA712b-2 set and then check the
OSD operation and image on srceen.

Step 11. At last, do “Memory Recall.”

3.2 Setup Procedure

3.2.1 Connect P2 and monitor of Fixture with VGA ports of VA712-2/VA712b-2 by VGA

Cable.

3.2.2 Connect P3 of Fixture with DVI port of VA712b-2 by DVI-DVI Cable.

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

3.2.4 Plug Power Adapter to Fixture.

3.2.5 Connect Power Cord to VA712-2/VA712b-2 Monitor.

3.2.6 Connect PC to the additional monitor.

P3：DVI-DVI Cable

JP1： Power Adapter

P2： VGA Cable

P1：to LTP Cable

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3.3 DDC Key In Procedure

Sep1.Select and execute DDC Key In program

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

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Sep3:Key the “Enter” and write the data

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

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Disassemble Process

1.1. Units Disassemble Process

1.1.1. Tools

 Glove

 Big cross screwdriver

 Small cross screwdriver

 Prize equipment or abandoned IC card

 Screw box

 Cushion

 Six angle sleeve spanner

1.1.2. Disassemble process

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

adown.(Picture 1, 2)
2、 Disassemble the 4 screws that fix the stand, remove the stand..(Picture 3, 4)
3、 Disassemble the fix screws of the back cover.（Picture 5）
4、 Use equipment or abandoned IC card to prize up the bezel through the bottom flute,

as showed in the following the picture 6,7, and rip up the back cover downwards.( as

showed in the following the picture 8,9,10)
5、 Disassemble the 4 screw M3*6MM through six angle sleeve spanner, showed in the

following picture 11.

6、 Disassemble the 4 fixed screws in the shield, remove the shield as the direction

arrowhead showed, refer to the following picture 12.
7、 Disassemble the 4 screws and 4 pins of the PWPC board, remove the PWPC

board.(symbolized the following picture 13 with red color)
8、 Disassemble the 3 screws and 4 pins of the main board, remove the main board.

(symbolized the following picture 13 with blue color)
9、 Disassemble the 2 screws of the audio board, remove the audio board. (symbolized

the following picture 13 with green color)
10、 Disassemble the 3 screws and connect pins of the Key board, remove the Key board,

refer to the following picture 14,15 .
11、 Disassemble the 2 fixed screws of the main frame, and remove the bezel, as showed

in the following the picture 16,17.
12、 Disassemble the 2 fixed screws of the panel, remove the main frame, as showed in

the following the picture 18,19,20. Do not damage the cable of the panel.
13、 That’s all. The disassemble process of the unit is over.

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1.1.3 Show pictures：

（Picture 1） （Picture 2）

（Picture 3） （Picture 4）

（Picture 5） （Picture 6）

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（Picture 7） （Picture 8）

（Picture 9） （Picture 10）

（Picture 11） （Picture 12）

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（Picture 13）

（Picture 14）

（Picture 15）

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（Picture 16）

（Picture 17）

（Picture 18）

（Picture 19）

（Picture 20）

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6. Troubleshooting Flow Chart

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7. Recommended Spare Parts List

ViewSonic Model Number: VS10901-1W
Rev: 1a

Serial No. Prefix: PX5

Item ECR/ECN ViewSonic P/N Ref. P/N Location Universal number# Q'ty

1

Accessories:

POWER CORD A-00004962 89G404A18N LS 1PCS

2

Board Assembly:

AUDIO BOARD B-00004963 AUPC780B3P 1PCS
3 CONVERSION BOARD B-00005609 CBPC780KCWV4P 1PCS
4 KEY BOARD B-00005610 KEPC780KE1P 1PCS
5 POWER BOARD B-00005611 PWPC1742CPV2P 1PCS
6

Cabinets:

FRONT PANEL (BEZEL) C-00005612 34G1750AKD B 1PCS
7 REAR COVER C-00005613 34G1751 KR 2B 1PCS
8 BASE ASSY C-00005649 34G1754 KR B 1PCS
9

Cables:

SIGNAL CABLE CB-00003768 89G 728HAA902 1PCS

10 AUDIO CABLE CB-00004972 89G 173 56 31 1PCS
11 WIRE (AUDIO BOARD HARNESS) CB-00005614 95G8014 14 34 1PCS
12 KEY BOARD HARNESS CB-00005615 95G8014 16926 1PCS
13 WIRE HARNESS CB-00005616 95G8018 30910 1PCS
14

Documentation

CARTON LABEL DC-00003727 40G 459709 1B 1PCS

15 H/V WARNING LABEL DC-00003729 40G 459709 4A 1PCS
16 Hg LABEL DC-00003730 40G457B709 1A 1PCS
17 HI-POT LABEL FOR 17-L DC-00003731 40G 459709 5A 1PCS
18 QSG DC-00005617 41G7801709 6A 1PCS
19 CD MANUAL DC-00005618 70G1701709 8A 1PCS
20 S/N LABEL DC-00005635 40G581B709 4A 1PCS
21 MANUAL P/N LABEL DC-00005636 40G 58162435A 1PCS
22 ID LABEL DC-00005637 J40G170T709 1A 1PCS
23 BLUE STICKER-2 DC-00005638 40G581B709 2B 1PCS
24 8ms STICKER DC-00005639 40G581B709 3A 1PCS
25

Electronics:

IC M24C02-WMN6TP E-00003738 56G1133 34 U405 1PCS

26 IC M24C16-WMN6TP E-00004982 56G1133 56 U404 1PCS
27 LCD PANEL E-00005619 750GLC70A7Q 12 1PCS
28 SPEAKER E-00005620 78G 311 8 L 1PCS
29 SPEAKER E-00005621 78G 311 8 R 1PCS
30 IC AMPLIFIER E-TDA749 E-00005622 56G 616 1 U201 1PCS
31 RTD2023L-LF LQFP-48 E-00005650 56G 562115 U403 1PCS
32 AIC1084-33PM TO-263 E-00005651 56G 563 7 U701 1PCS
33 MTV512MV PLCC-44 MYSO E-00005652 56G1125543CA4 U402 1PCS
34

Hardware:

MAIN FRAME HW-00005623 15G8267 1 1PCS

35 HINGE HW-00005624 37G 552 1 1PCS
36 SCREW HW-00005625 M1G 130 6120 4PCS
37 SCREW HW-00005626 M1G 330 4128 4PCS
38 SCREW HW-00005627 M1G1140 6128 1PCS
39 SCREW HW-00005628 M1G1730 6128 3PCS
40 SCREW HW-00005629 M1G1740 12120 4PCS
41 SCREW HW-00005630 Q1G 130 6120 2PCS
42 SCREW HW-00005631 Q1G 330 8 47 1PCS
43 SCREW HW-00005632 Q1G 330 8128 3PCS
44 SCREW HW-00005633 Q1G1030 8128 4PCS
45 SCREW HW-00005634 Q1G1040 10128 3PCS
46

Packing Material:

FOAM EPS(R) P-00005640 44G3783 1 1PCS

47 FOAM EPS(R) P-00005641 44G3783 2 1PCS
48 PE BAG P-00005642 45G 76 28 V3 1PCS
49 PE BAG FOR BASE P-00005643 45G 88606 1PCS
50 PE BAG P-00005644 45G 88607 1PCS
51 EPE BAG P-00005645 45G 88609 B 1PCS
52 BOX P-00005646 J44G3783709 2C 1PCS
53

Plastics: DECO COVER PL-00005647 34G1752 KR B 1PCS

54 STAND PL-00005648 34G1753 KR B 1PCS

Remark 1:

Above listed items are examples, supplier can expand the rows to add more necessary items.

Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR

approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior

versions.

RECOMMENDED SPARE PARTS LIST (VA712-2)

Description

Rev: 1a

Serial No. Prefix: PX7

Item ECR/ECN ViewSonic P/N Ref. P/N Location Universal number# Q'ty

1

Accessories:

POWER CORD A-00003716 89G402A18N LS 1PCS

2

Board Assembly:

AUDIO BOARD B-00004963 AUPC780B3P 1PCS
3 KEY BOARD B-00005610 KEPC780KE1P 1PCS
4 POWER BOARD B-00005611 PWPC1742CPV2P 1PCS
5 CONVERSION BOARD B-00005653 CBPC780KCWV3P 1PCS
6

Cabinets:

FRONT PANEL (BAZEL) C-00005654 34G1750A4Z B 1PCS
7 REAR COVER C-00005655 34G1751 4Z B 1PCS
8 BASE C-00005665 34G1754 4Z B 1PCS
9

Cables:

SIGNAL CABLE CB-00003768 89G 728HAA902 1PCS

10 AUDIO CABLE CB-00004972 89G 173 56 31 1PCS
11 AUDIO BOARD HARNESS CB-00005614 95G8014 14 34 1PCS
12 KEY BOARD HARNESS CB-00005615 95G8014 16926 1PCS
13 WIRE HARNESS CB-00005616 95G8018 30910 1PCS
14

Documentation:

CARTON LABEL DC-00003727 40G 459709 1B 1PCS

15 Hg LABEL DC-00003730 40G457B709 1A 1PCS
16 HI-POT LABEL FOR 17-L DC-00003731 40G 459709 5A 1PCS
17 QSG DC-00005617 41G7801709 6A 1PCS
18 S/N LABEL DC-00005635 40G581B709 4A 1PCS
19 MANUAL P/N LABEL DC-00005636 40G 58162435A 1PCS
20 BLUE STICKER-2 DC-00005638 40G581B709 2B 1PCS
21 8ms STICKER DC-00005639 40G581B709 3A 1PCS
22 CD MANUAL DC-00005656 70G1701709 9B 1PCS
23 ID DC-00005661 J40G170T709 6A 1PCS
24

Electronics:

IC M24C02-WMN6TP E-00003738 56G1133 34 U405 1PCS

25 IC M24C02-WMN6TP E-00003738 56G1133 34 U406 1PCS
26 IC M24C16-WMN6TP E-00004982 56G1133 56 U404 1PCS
27 SPEAKER E-00005620 78G 311 8 L 1PCS
28 SPEAKER E-00005621 78G 311 8 R 1PCS
29 AIC1084-33PM TO-263 E-00005651 56G 563 7 U701 1PCS
30 PANEL E-00005657 750GLC70A7Q 12 B 1PCS
31 RTD2523B-LF PQFP-128 E-00005658 56G 562116 U401 1PCS
32 MTV512MV PLCC-44 MYSO E-00005659 56G1125543CA3 U402 1PCS
33

Hardware:

MAIN FRAEM HW-00005623 15G8267 1 1PCS

34 HINGE HW-00005624 37G 552 1 1PCS
35 SCREW HW-00005625 M1G 130 6120 4PCS
36 SCREW HW-00005626 M1G 330 4128 4PCS
37 SCREW HW-00005627 M1G1140 6128 1PCS
38 SCREW HW-00005628 M1G1730 6128 2PCS
39 SCREW HW-00005629 M1G1740 12120 4PCS
40 SCREW HW-00005630 Q1G 130 6120 2PCS
41 SCREW HW-00005631 Q1G 330 8 47 1PCS
42 SCREW HW-00005633 Q1G1030 8128 4PCS
43 SCREW HW-00005634 Q1G1040 10128 3PCS
44 SCREW HW-00005660 Q1G 330 8128 3PCS
45

Packing Materials:

EPS(R) P-00005640 44G3783 1 1PCS

46 EPS(R) P-00005641 44G3783 2 1PCS
47 PE BAG P-00005642 45G 76 28 V3 1PCS
48 PE BAG FOR BASE P-00005643 45G 88606 1PCS
49 PE BAG P-00005644 45G 88607 1PCS
50 EPE COVER P-00005645 45G 88609 B 1PCS
51

Plastics:

CARTON P-00005662 J44G3783709 1C 1PCS

52 DECO COVER PL-00005663 34G1752 4Z B 1PCS
53 STAND PL-00005664 34G1753 4Z B 1PCS

RECOMMENDED SPARE PARTS LIST (VA712b-2)

Description

ViewSonic Model Number:VS10901-3W

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Remark 1:

Above listed items are examples, supplier can expand the rows to add more necessary items.

Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR

approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior
versions.

ViewSonic Model Number: VS10901-1W
Rev: 1a

Serial No. Prefix: PX5

Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty

1 B-00004963 AUPC780B3P AUDIO BOARD 1
2 B-00005609 CBPC780KCWV4P CONVERSION BOARD 1
3 B-00005610 KEPC780KE1P KEY BOARD 1
4 B-00005611 PWPC1742CPV2P POWER BOARD 1
5 N/A 11G6054 1 PIN CONNECTOR 4
6 N/A 12G 436 2 VESA RUBBER 4
7 N/A 12G8394 1 FOOT PORON 6
8 N/A 15G5786 1 VRSA BRACKET 1

9 N/A 15G8239 1 Kensington bracket 1
10 HW-00005623 15G8267 1 MAIN FRAEM 1
11 N/A 15G8269 1 HINGE BKT 1
12 N/A 23G3178709 4A VSC17-LCD FRONT LOGO 1
13 N/A 23G3178709 6A BIRD LOGO (E015-006) 1
14 N/A 33G4942 X2 B FONCTION BUTTON 1
15 N/A 33G4943 1 POWER LENS 1
16 N/A 33G4944 2 VSC LOGO 1
17 C-00005612 34G1750AKD B BEZEL 1
18 C-00005613 34G1751 KR 2B REAR COVER 1
19 PL-00005647 34G1752 KR B DECO COVER 1
20 PL-00005648 34G1753 KR B STAND BASE 1
21 C-00005649 34G1754 KR B STAND BASE 1
22 HW-00005624 37G 552 1 HINGE 1
23 N/A 40G 45760819A MODEL LABEL 1
24 DC-00003727 40G 459709 1B CARTON LABEL 1
25 DC-00003731 40G 459709 5A HI-POT LABEL FOR 17-LCD 1
26 DC-00005636 40G 58162435A MANUAL P/N LABEL 1
27 N/A 40G 970709 7A ID 1
28 DC-00003730 40G457B709 1A Hg LABEL 1
29 DC-00005638 40G581B709 2B BLUE STICKER-2 1
30 DC-00005639 40G581B709 3A 8ms STICKER 1
31 DC-00005635 40G581B709 4A S/N LABEL 1
32 DC-00005617 41G7801709 6A QSG 1
33 N/A 44G3231502 ELECTRIC COTTON 2
34 P-00005640 44G3783 1 EPS(R) 1
35 P-00005641 44G3783 2 EPS(R) 1
36 P-00005642 45G 76 28 V3 PE BAG 1
37 N/A 45G 77 3 TRANSPARENT SHEET 3
38 P-00005643 45G 88606 PE BAG FOR BASE 1
39 P-00005644 45G 88607 PE BAG 1
40 P-00005645 45G 88609 B EPE COVER 1
41 N/A 50G 600 1 W WHITE PACKING TAPE 4
42 N/A 50G 600 2 HANDLE1 1
43 N/A 50G 600 3 HANDLE2 1
44 N/A 52G 1150 C BLACK TAPE 4
45 N/A 52G 1185 24 TAPE 5
46 N/A 52G 1206 A AL FOIL 3
47 N/A 52G 1207 A AL FOIL 1
48 N/A 52G 1217 VS AL FOIL 2
49 N/A 52G 1901 A AL FOIL 2
50 N/A 52G6019 1 YELLOW TAPE 5
51 N/A 52G6020 1 PROTECT FILM 1
52 N/A 52G8025 11803 MYLAR POWER 1
53 N/A 52G8025 11804 MYLAR SHIELD 1
54 DC-00005618 70G1701709 8A CD MANUAL 1
55 E-00005620 78G 311 8 L SPEAKER 8OHM 2.5W 1
56 E-00005621 78G 311 8 R SPEAKER 8OHM 2.5W 1
57 N/A 85G 722 2 MAIN SHIELD 1
58 CB-00004972 89G 173 56 31 AUDIO CABLE 1
59 CB-00003768 89G 728HAA902 SIGNAL CABLE 1
60 A-00003716 89G402A18N LS POWER CORD 1
61 CB-00005614 95G8014 14 34 HARNESS 14P-14P 50mm 1
62 N/A 95G8014 16 50 HARNESS 16P-12P 165mm 1
63 CB-00005616 95G8018 30910 WIRE HARNESS 1
64 HW-00005625 M1G 130 6120 SCREW 4
65 HW-00005626 M1G 330 4128 SCREW 4
66 HW-00005627 M1G1140 6128 SCREW 1
67 HW-00005628 M1G1730 6128 SCREW 3
68 HW-00005628 M1G1730 6128 SCREW 2

BOM LIST (VA712-2)

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

52

Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty

69 HW-00005628 M1G1730 6128 SCREW 3
70 HW-00005629 M1G1740 12120 SCREW 4
71 HW-00005630 Q1G 130 6120 SCREW 2
72 N/A Q1G 330 8128 SCREW 3
73 N/A Q1G 330 8128 SCREW 2
74 N/A Q1G 330 10 47 SCREW 1
75 HW-00005633 Q1G1030 8128 SCREW 4
76 HW-00005634 Q1G1040 10128 SCREW 3
77 E-00005619 750GLC70A7Q 12 CLAA170EA07Q 17" LCD PAN 1

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

53

ViewSonic Model Number: VS10901-3W
Rev: 1a

Serial No. Prefix: PX7

Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty

1 B-00004963 AUPC780B3P AUDIO BOARD 1
2 B-00005653 CBPC780KCWV3P CONVERSION BOARD 1
3 B-00005610 KEPC780KE1P KEY BOARD 1
4 B-00005611 PWPC1742CPV2P POWER BOARD 1
6 N/A 11G6054 1 PIN CONNECTOR 4
7 N/A 12G 436 1 VESA RUBBER 4
8 N/A 12G8394 1 FOOT PORON 6

9 N/A 15G5786 1 VRSA BRACKET 1
10 N/A 15G8239 1 Kensington bracket 1
11 HW-00005623 15G8267 1 MAIN FRAEM 1
12 N/A 15G8269 1 HINGE BKT 1
13 N/A 23G3178709 4A VSC17-LCD FRONT LOGO 1
14 N/A 23G3178709 6A BIRD LOGO (E015-006) 1
15 N/A 33G4942 X2 B FONCTION BUTTON 1
16 N/A 33G4943 1 POWER LENS 1
17 N/A 33G4944 1 VSC LOGO 1
18 C-00005654 34G1750A4Z B BEZEL 1
19 C-00005655 34G1751 4Z B REAR COVER 1
20 PL-00005663 34G1752 4Z B DECO COVER 1
21 PL-00005664 34G1753 4Z B STAND 1
22 C-00005665 34G1754 4Z B BASE 1
23 HW-00005624 37G 552 1 HINGE 1
24 N/A 40G 45760819A MODEL LABEL 1
25 DC-00003727 40G 459709 1B CARTON LABEL 1
26 DC-00003731 40G 459709 5A HI-POT LABEL FOR 17-LCD 1
27 DC-00005636 40G 58162435A MANUAL P/N LABEL 1
28 N/A 40G 970709 8A ID 1
29 DC-00003730 40G457B709 1A Hg LABEL 1
30 DC-00005638 40G581B709 2B BLUE STICKER-2 1
31 DC-00005639 40G581B709 3A 8ms STICKER 1
32 DC-00005635 40G581B709 4A S/N LABEL 1
33 DC-00005617 41G7801709 6A QSG 1
34 N/A 44G3231502 ELECTRIC COTTON 2
35 P-00005640 44G3783 1 EPS(R) 1
36 P-00005641 44G3783 2 EPS(R) 1
37 P-00005642 45G 76 28 V3 PE BAG 1
38 N/A 45G 77 3 TRANSPARENT SHEET 3
39 P-00005643 45G 88606 PE BAG FOR BASE 1
40 P-00005644 45G 88607 PE BAG 1
41 P-00005645 45G 88609 B EPE COVER 1
42 N/A 50G 600 1 W WHITE PACKING TAPE 4
43 N/A 50G 600 2 HANDLE1 1
44 N/A 50G 600 3 HANDLE2 1
45 N/A 52G 1150 C BLACK TAPE 4
46 N/A 52G 1185 24 TAPE 5
47 N/A 52G 1206 A AL FOIL 3
48 N/A 52G 1207 A AL FOIL 1
49 N/A 52G 1217 VS AL FOIL 2
50 N/A 52G 1901 A AL FOIL 2
51 N/A 52G6019 1 YELLOW TAPE 5
52 N/A 52G6020 1 PROTECT FILM 1
53 N/A 52G8025 11803 MYLAR POWER 1
54 N/A 52G8025 11804 MYLAR SHIELD 1
55 N/A 70G1701709 9A CD MANUAL 1
56 E-00005620 78G 311 8 L SPEAKER 8OHM 2.5W 1
57 E-00005621 78G 311 8 R SPEAKER 8OHM 2.5W 1
58 N/A 85G 722 1 MAIN SHIELD 1
59 CB-00004972 89G 173 56 31 AUDIO CABLE 1
60 CB-00003768 89G 728HAA902 SIGNAL CABLE 1
61 A-00003716 89G402A18N LS POWER CORD 1
62 CB-00005614 95G8014 14 34 HARNESS 14P-14P 50mm 1
63 N/A 95G8014 16 50 HARNESS 16P-12P 165mm 1
64 CB-00005616 95G8018 30910 WIRE HARNESS 1
65 HW-00005625 M1G 130 6120 SCREW 4

BOM LIST (VA712b-2)

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

54

Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty

66 HW-00005626 M1G 330 4128 SCREW 4
67 HW-00005627 M1G1140 6128 SCREW 1
68 HW-00005628 M1G1730 6128 SCREW 3
69 HW-00005628 M1G1730 6128 SCREW 3
70 HW-00005628 M1G1730 6128 SCREW 2
71 HW-00005629 M1G1740 12120 SCREW 4
72 HW-00005630 Q1G 130 6120 SCREW 2
73 HW-00005660 Q1G 330 8128 SCREW 2
74 HW-00005660 Q1G 330 8128 SCREW 3
75 N/A Q1G 330 10 47 SCREW 1
76 HW-00005633 Q1G1030 8128 SCREW 4
77 HW-00005634 Q1G1040 10128 SCREW 3
78 E-00005619 750GLC70A7Q 12 CLAA170EA07Q 17" LCD PAN 1

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

55

8. Exploded Diagram and Exploded Parts List

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

56

ViewSonic Model Number: VS10901-1W
Rev: 1a

Serial No. Prefix: PX5

Item ViewSonic P/N Ref. P/N Description Q'ty

1 N/A 52G6020 1 PROTECT FILM 1
2 N/A 23G3178709 4A VSC17-LCD FRONT LOGO 1
3 N/A 33G4942 X2 B FUNCTION BUTTON 1
4 N/A 33G4943 1 POWER LENS 1
5 C-00005612 34G1750AKD B BEZEL 1
6 N/A KEY BOARD KEPC780KE1P 1
7 N/A Q1G 330 8128 SCREW 1
8 N/A 78G 311 8 L/R SPEAKER 80HM 2.5W 2

9 HW-00005630 Q1G 130 6120 SCREW 1
10 N/A 44G3231502 SPONGE 1
11 HW-00005623 15G8267 1 MAIN FRAME 1
12 HW-00005626 M1G 330 4128 SCREW 4
13 N/A 52G8025 11803 MYLAR POWER 1
14 N/A POWER BOARD PWPC1742CPV2P 1
15 N/A 12G8394 1 FOOT PORON 4
16 C-00005649 34G1754 KR B STAND BASE 1
17 N/A 11G6054 1 PIN CONNECTOR 4
18 N/A Q1G 330 8128 SCREW 3
19 HW-00005624 37G 552 1 HINGE 1

20 N/A 52G6019 1 YELLOW TAPE 4
21 HW-00005627 M1G1140 6128 SCREW 1
22 HW-00005628 M1G1730 6128 SCREW 8
23 N/A 52G 1207 A AL FOIL 1
24 N/A 52G 1217 VS AL FOIL 2
25 N/A 52G 1901 A AL FOIL 2
26 HW-00005629 M1G1740 12120 SCREW 4
27 HW-00005630 Q1G 130 6120 SCREW 2
28 N/A 15G8269 1 HINGE BRACKET 1
29 HW-00005631 Q1G 330 8 47 SCREW 1
30 PL-00005648 34G1753 KR B STAND BASE 1
31 PL-00005647 34G1752 KR B DECO COVER 1
32 N/A 12G 436 2 VESA RUBBER 4
33 N/A 33G4944 2 VSC LOGO 1
34 N/A 34G1751 KR B REAR COVER 1
35 N/A 15G8239 1 KENSINGTON BRACKET 1
36 N/A 15G5786 1 VESA BRACKET 1
37 N/A 85G 722 2 MAIN SHIELD 1
38 CB-00005614 95G8014 14 34 HARNESS 14P-14P 50mm 1
39 B-00004963 AUPC780B3P AUDIO BOARD 1
40 N/A 52G 1206 A AL FOIL 3
41 CB-00005615 95G8014 16926 WIRE HARNESS 1
42 B-00005609 CBPC780KCWV4P CONVERSION BOARD 1
43 N/A 52G8025 11804 MYLAR SHIELD 1
44 CB-00005616 95G8018 30910 WIRE HARNESS 1
45 E-00005619 750GLC70A7Q 12 CLAA170EA07Q 17'LCD PAN 1
46 N/A 23G3178709 6A BIRD LOGO 1

EXPLODED PARTS LIST (VA712-2)

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

57

ViewSonic Model Number: VS10901-3W
Rev: 1A

Serial No. Prefix: PX7

Item ViewSonic P/N Ref. P/N Description Q'ty

1 N/A 52G6020 1 PROTECT FILM 1
2 N/A 23G3178709 4A VSC17-LCD FRONT LOGO 1
3 N/A 33G4942 X2 B FUNCTION BUTTON 1
4 N/A 33G4943 1 POWER LENS 1
5 C-00005654 34G1750A4Z B BEZEL 1
6 N/A KEY BOARD KEPC780KE1P 1
7 HW-00005660 Q1G 330 8128 SCREW 1
8 N/A 78G 311 8 L/R SPEAKER 80HM 2.5W 2

9 HW-00005630 Q1G 130 6120 SCREW 1
10 N/A 44G3231502 SPONGE 1
11 HW-00005623 15G8267 1 MAIN FRAME 1
12 HW-00005626 M1G 330 4128 SCREW 4
13 N/A 52G8025 11803 MYLAR POWER 1
14 N/A POWER BOARD PWPC1742CPV2P 1
15 N/A 12G8394 1 FOOT PORON 4
16 C-00005665 34G1754 4Z B STAND BASE 1
17 N/A 11G6054 1 PIN CONNECTOR 4
18 HW-00005660 Q1G 330 8128 SCREW 3
19 HW-00005624 37G 552 1 HINGE 1

20 N/A 52G6019 1 YELLOW TAPE 4
21 HW-00005627 M1G1140 6128 SCREW 1
22 HW-00005628 M1G1730 6128 SCREW 8
23 N/A 52G 1207 A AL FOIL 1
24 N/A 52G 1217 VS AL FOIL 2
25 N/A 52G 1901 A AL FOIL 2
26 HW-00005629 M1G1740 12120 SCREW 4
27 HW-00005630 Q1G 130 6120 SCREW 2
28 N/A 15G8269 1 HINGE BRACKET 1
29 HW-00005631 Q1G 330 8 47 SCREW 1
30 PL-00005664 34G1753 4Z B STAND BASE 1
31 PL-00005663 34G1752 4Z B DECO COVER 1
32 N/A 12G 436 2 VESA RUBBER 4
33 N/A 33G4944 2 VSC LOGO 1
34 C-00005655 34G1751 4Z B REAR COVER 1
35 N/A 15G8239 1 KENSINGTON BRACKET 1
36 N/A 15G5786 1 VESA BRACKET 1
37 N/A 85G 722 2 MAIN SHIELD 1
38 CB-00005614 95G8014 14 34 HARNESS 14P-14P 50mm 1
39 B-00004963 AUPC780B3P AUDIO BOARD 1
40 N/A 52G 1206 A AL FOIL 3
41 CB-00005615 95G8014 16926 WIRE HARNESS 1
42 B-00005609 CBPC780KCWV4P CONVERSION BOARD 1
43 N/A 52G8025 11804 MYLAR SHIELD 1
44 CB-00005616 95G8018 30910 WIRE HARNESS 1
45 E-00005619 750GLC70A7Q 12 CLAA170EA07Q 17'LCD PAN 1
46 N/A 23G3178709 6A BIRD LOGO 1

EXPLODED PARTS LIST (VA712b-2)

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

58

Packing for Shipping

ViewSonic Model Number: VS10901-1W
Rev: 1a

Item ViewSonic P/N Ref. P/N Location Q'ty

1 P-00005646 J44G3783709 2C CARTON 1
2 N/A 50G 600 2/3 HANDLE1/2 1
3 P-00005642 45G 76 28 V3 PE BAG 1
4 DC-00005618 70G1701709 8A CD MANUAL 1
5 DC-00005617 41G7801709 6A QSG 1
6 P-00005643 45G 88606 EPE COVER 1
7 N/A T780KCWHKDV4ABP MONITOR 1
8 P-00005645 45G 88609 B EPE BAG 1

9 P-00005644 45G 88607 PE BAG 1
10 N/A 44G3783 1/2 EPS 1
11 CB-00004972 89G 173 56 31 AUDIO CABLE 1
12 A-00003716 89G402A18N LS POWER CORD 1
13 CB-00003768 89G 728HAA902 SIGNAL CABLE 1
14 N/A 37G1754 4Z B BASE 1

PACKING PART LIST ( VA712-2 )

ViewSonic Model Number: VS10901-3W
Rev: 1A

Item ViewSonic P/N Ref. P/N Location Q'ty

1 P-00005662 J44G3783709 1C CARTON 1
2 N/A 50G 600 2/3 HANDLE1/2 1
3 P-00005642 45G 76 28 V3 PE BAG 1
4 N/A 70G1701709 9B CD MANUAL 1
5 DC-00005617 41G7801709 6A QSG 1
6 P-00005643 45G 88606 EPE COVER 1
7 N/A T780KCWHKDV3ABP MONITOR 1
8 P-00005645 45G 88609 B EPE BAG 1

9 P-00005644 45G 88607 PE BAG 1
10 N/A 44G3783 1/2 EPS 1
11 CB-00004972 89G 173 56 31 AUDIO CABLE 1
12 A-00003716 89G402A18N LS POWER CORD 1
13 N/A 89G 725HAA902 SIGNAL CABLE 1
14 N/A 37G1754 4Z B BASE 1
15 N/A 89G1748GAADVI SIGNAL CABLE 1

PACKING PART LIST (VA712b-2)

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

59

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

60

9. Block Diagram

+3.3V

Q702

PMBS3904

CE

BQ703

NC

C705

0.1uF

C709

0.1uF

C710

0.1uF

C707

0.1uF

C711

0.1uF

R710

4.7K 1/16W

\

1.8DVCC

ADC_1.8AVCC

RTD_1.8DVCC

C718

0.1uF

C716

0.1uF

C717

0.1uF

TO-263

+

C720

10uF/16V

D702

GS1D

2
4
6
8
10
12

1
3
5
7
9

11

CN701

CONN

FB702
600 OHM

VIN

3

ADJ

1

VOUT

2

U701

AIC1084-33PM

U703
AO3401L

+5V

Q701

PMBS3904

BL_ON_OFF

C715

0.1uF
R718
0 1/16W

\

+3.3V

DGND

R724
10K 1/16W

\

+3.3V

FB703

600 OHM

R721 51K 1/16W

\

D701 SMAL140

PANEL_POWER

BL_ADJ

2
4
6
8
10
12
14

1
3
5
7

9
11
13

CN702

+

C703

100uF/25V

FB701
600 OHM

C714
1uF/16V

+

C706

100uF/25V

delete
R715,R720,C712

VCC+5V

BL_ON_OFF

VIN

3

GND

1

VOUT

2

U702 NC / AP1117 1.8V

OUT_R+OUT_L+

OUT_L- OUT_R-

R722 4.7K 1/16W

\

R706 10K 1/16W

\

R707 10K 1/16W

\

Q704
PMBS3904

DEL
R702,R703

STDBY
MUTE

R723
10K 1/16W

\

+5V

R709
220 1/16W

\

BRIGHTNESS

BACKLIGHT

R705
10K 1/16W

\

R708
NC / 1K 1/16W

\

R701
10K 1/16W

\

C708
1uF/16V

R704
1K 1/16W

\

+5V

PANEL_PW

+12V

+5V

+12V

+3.3V

+

C719

100uF/25V

C704

0.1uF

R716
10K 1/16W

\

VCC+5V

2N3906

R717
NC

0805

E

VOL_ADJ

OUT_R+
OUT_R-

2N3904

C

+5V

OUT_L+
OUT_L-

+5VA

+12VA

0805

B

R712
10K 1/16W

\

R714 NC

R711
NC

VOLUME

+5V

+

C702

470uF/16V

+5V+12V

BL_ADJ

+

C701

100uF/25V

3.3V_Vd

VCC+5V

R713 0 1/16W

\

VOL_ADJ

+

C713

100uF/25V

10. Schematic Diagrams

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

61

Model

Title

Date Rev:

ViewSonic Corporation

POWER

+3.3V

R470

10K 1/16W

\

DEL R463,R472

C449

0.1uF

+3.3V

MCU_VCC

MCU_VCC

C443

NC

R455 NC

KEY_B

C439

0.001uF

C440

0.001uF

C441

0.001uF

C442

0.001uF

M512_XOUT

R4018
NC

A0

1

A1

2

A2

3

GND4SDA

5

SCL

6

WP

7

VCC

8

U405

M24C02WMN6

KEY-B

RXD

KEY_B

MCU_RST

R499 100 1/16W

\

R495 100 1/16W

\

VGA5V

EEPROM_WP

BUS_POWER

DDC2_SCL
DDC2_SDA

R483

4.7K 1/ 16W

\

R4014 NC

R493 4.7K 1/16W

\

MCU_VCC

R4015
NC

DDC_SDA

C438

0.001uF

R4019 100 1/ 16W

\

KEY_C

POWER_KEY

KEY_C

R4013

4.7K 1/ 16W

\

CONNECT

R467

10K 1/16W

\

LED_GREEN

3

1

2

D423
BAV70

R484

4.7K 1/ 16W

\

R477

4.7K 1/ 16W

\

R4007

6.8K 1/ 16W

\

R487

4.7K 1/ 16W

\

R486

4.7K 1/ 16W

\

R485

4.7K 1/ 16W

\

X402

24MHz

C446
10pF

C447
10pF

Q407
PMBS3904

C452

0.1uF

STDBY

RTD_SCSB

MUTE

RTD_SCLK

DDC_WP

DDC_WP

R4001 150 1/ 16W

\

EDID_WP

ENTER_KEY

BRIGHTNESS

LEFT_KEY

RIGHT_KEY

R488

4.7K 1/ 16W

\

R479

4.7K 1/ 16W

\

R480

4.7K 1/ 16W

\

R481

4.7K 1/ 16W

\

IICSCL
IICSDA

BACKLIGHT
PANEL_PW

POWER_KEY

LED_GREEN LED_ORANGE

LEFT_KEYRIGHT_KEY

ENTER_KEY

R459 100 1/ 16W

\

R457 0 1/16W

\

R461 100 1/ 16W

\

KEY_A

AUTO_KEY

R456 0 1/ 16W

\

R462 100 1/ 16W

\

R458 100 1/ 16W

\

R454 NC

R460 100 1/ 16W

\

C437

0.001uF

R491

470 1/16 W

\

R492 4.7K 1/16W

\

MCU_VCC

DDC_SCL

DDC_SDA

R464

4.7K 1/ 16W

\

R465

4.7K 1/ 16W

\

R468

10K 1/16W

\

R469

10K 1/16W

\

R471

10K 1/16W

\

DEL
R490,C444,R474,R475,R496,R494

C445
NC

OUT_L+
OUT_L-

OUT_R+
OUT_R-

IICSDA

IICSCL

R4003 100 1/16W

\

R4002 100 1/16W

\

NC

1

NC

2

NC

3

VSS4SDA

5

SCL

6

WC

7

VCC

8

U404

M24C16

MCU_VCC

MCU_VCC

R4008

4.7K 1/ 16W

\

EEPROM_WP

C448

0.1uF

R478

4.7K 1/ 16W

\

R442 100 1/16W

\

C E

B

Q404
PMBS3906

C E

B

Q405
PMBS3906

DVI_DET

R489
10K 1/16W

\

2
4
6
8
10
12
14
16

1
3
5
7

9
11
13
15

CN404

MCU_VCC

R498
10K 1/16W

\

R473

470 1/16 W

\

R497

10K 1/16W

\

VOLUME

SDIO0 3
SDIO1 3
SDIO2 3
RTD_SD3/SDI 3

KEY-B

P5.0/DA0

2

P5.1/DA1

3

P5.2/DA2

4

P5.3/DA3

5

P5.4/DA4

6

P5.5/DA5

7

HSCL2/P5.6

8

HSDA2/P5.7

9

RST

10

HDA1/TX/P3.1

13

XTAL220XTAL121VSS

22

VCC

44

P1.043P1.142P1.241P1.340P1.439P1.538P1.637P1.7

36

NC

35

VSYNC

32

NC

33

P6.0/AD0

24

P6.1/AD1

25

P6.2/AD2

26

P6.3/AD3

27

P6.4

28

P6.5

29

P6.6/CLK0

30

P6.7

31

HCL1/RX/P3.0

11

P3.2/INT0

14

P3.3/INT1

15

P3.4/T0

16

P3.5/T1

17

P7.6/CLKO

18

P7.7

19

NC

12

MTV512

U402

+5V

A0

1

A1

2

A2

3

GND4SDA

5

SCL

6

WP

7

VCC

8

U406

M24C02WMN6

OUT_L+

OUT_R-

OUT_R+

OUT_L-

R466

4.7K 1/ 16W

\

R482

4.7K 1/ 16W

\

C451

0.001uF

TXD

R4005 100 1/16W

\

R4004 100 1/16W

\

EDID_WPEDID_WP

R4017

10K 1/16W

\

Q406

NC

R4009 NC

R4016

22K 1/16W

\

R4006

NC

AUTO_KEY

AUTO_KEY

KEY_A

MCU_VCC

R4010

4.7K 1/ 16W

\

R4022

4.7K 1/ 16W

\

R4023

4.7K 1/ 16W

\

R476

4.7K 1/ 16W

\

3

1

2

D424
BAV70

+5V

R4011

4.7K 1/ 16W

\

C450

0.1uF

DDC_SCL

R4026 100 1/16W

\

R4025

4.7K 1/ 16W

\

LED_ORANGE

R4024

4.7K 1/ 16W

\

R4027 100 1/16W

\

R4028 100 1/16W

\

R4029 100 1/16W

\

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

62

Model

Title

Date Rev:

ViewSonic Corporation

MCU

R409

30K 1/ 16W

\

R1.8DVCC R1.8DVCC

Closed to Scaler

Voltage to 2.2V (if use
5V the R 25K and 20K;

3.3Vuse 15K and 30K )

When RTD2333, R403= NC/R404 =
0;
Otherwise, R403 = 0/R404 = NC

Closed to Crystal

C408

0.1uF

C409

0.1uF

XO
XI

DGND

C403

0.1uF

C405

0.1uF

C404

0.1uF

Q401

PMBS3906

R424 0 1/16W

\

R423 0 1/16W

\

R422 0 1/16W

\

R419 0 1/16W

\

R417 0 1/16W

\

R416 0 1/16W

\

R426 0 1/16W

\

R425 0 1/16W

\

ADC_GND

22

ADC_VDD

21

B0+

23

B0-

24

ADC_GND

37

SOG0

25

G0+

26

G0-

27

ADC_VDD

38

R0+

28

R0-

29

B1+ / V6

31

AHS1 / V0

39

AVS1 / VCLK

40

TMDS_TST / PWM0 / TCON2

5

TMDS_GND

10

TMDS_VDD

7

REXT

6

TMDS_VDD

13

RX2P

8

RX2N

9

TMDS_GND

16

RX1P

11

RX1N

12

RX0P

14

RX0N

15

RXCP

17

RXCN

18

XO

127

XI

128

DPLL_GND

126

DPLL_VDD

125

APLL_VDD

2

PLL_TEST1 / TCON0 / TCON3

3

PLL_TEST2 / TCON1 / TCON12

4

APLL_GND

1

VCCK

47

GNDK

46

PVCC59PVCC72PVCC83PVCC95PVCC

108

PGND60PGND71PGND84PGND96PGND

107

DDCSCL1 / TCON450DDCSDA1 / TCON951SCLK / TCON3

57

SDIO[3] / TCON055SDIO[2] / TCON11

54

SDIO[1] / TCON7

53

SDIO[0] / TCON1352PWM1 / TCON0 / COUT48BJT_B58BB3P/BBLU761BB3N/BBLU662BB2P/BBLU563BB2N/BBLU464BB1P/BBLU365BB1N/BBLU266BCLKP/BGRN767BCLKN/BGRN668BG3P/BGRN5

69

DDCSCL2 / VCLK / TCON4

121

DDCSDA2 / V7 / TCON6

120

BG2P / TXE3+

73

BG2N / TXE3-

74

BG1P / TXEC+

75

BG1N / TXEC-

76

BR3P / TXE2+

77

BR3N / TXE2-

78

BR2P / TXE1+

79

BR2N / TXE1-

80

BR1P / TXE0+

81

BR1N / TXE0-

82

AB3P / TXO3+

85

AB3N / TXO3-

86

AB2P / TXOC+

87

AB2N / TXOC-

88

AB1P / TXO2+

89

AB1N / TXO2-

90

ACLKP / TXO1+

91

ACLKN / TXO1-

92

AG3P / TXO0+

93

AG3N / TXO0-

94

AG2P

97

AG2N

98

AG1P

99

AG1N

100

AR3P

101

AR3N

102

AR2P

103

AR2N

104

AR1P

105

SDIO[2] / V3 / TCON5

114

SDIO[3] / V4 / TCON9

115

SCSB / V5 / TCON7

118

SCLK / V6 / TCON3

119

TCON9 / PWM0

122

RESET_OUT

123

33VRST_REF

124

SDIO[1] / V2 / TCON8

113

SDIO[0] / V1 / TCON10

112

AVS0

19

AHS0

20

B1- / V7

30

G1+ / V4

33

G1- / V5

32

R1+ / V1

36

R1- / V2

35

SOG1 / V3

34

SCSB / TCON1256PWM2 / TCON1/TCON7

49

AR1N

106

33VPNLOUT

109

TCON13 / COUT

110

V0 / TCON2/PWM1

111

VCCK

116

GNDK

117

BG3N/BGRN4

70

RTD2523B ( RSDS & LVDS )

U401

Q402

PMBS3906

+

C406

22uF/16V

RXO3­RXO3+

RXOC­RXOC+

RXO1-

RXO2+

RXO2-

RXO1+

RXEC+
RXE3­RXE3+

RXO0+

1.8DVCC

R1.8AVCC

RXE2-

RXE1+

RXE0+
RXE1-

RXE0-

RXEC-

RXE2+

DGND

DGND

MCU_RST

C414

0.1uF

33VRST_REF

+

C418

10uF/16V

R1.8DVCC

R402 0 1/16W

\

M512_XOUT

R413NCR414

NC

C407

0.1uF

1.8DVCC

XI

XO

B1­B1+

AHS1

DGND
AVS1

R1­R1+

G1+
SOG1

G1-

DDCSCL1

R1.8AVCC

DGND

DDCSDA1

BJT_B

DGND

XO

1

XI

2

PLL_GND

3

AVS/VCLK

4

AHS/V0

5

B-/V1

6

B+/V2

7

G-/V3

8

G+/V4

9

SOG/V5

10

R-/V6

11

R+/V7

12

ADC_GND13ADC_VDD14PWM0/SDIO[3]15PWM1/DDCSCL/SCSB16PWM2/DDCSDA/SCLK17BJT_CTRL18VCCK19PGND20TXE3+21TXE3-22TXEC+23TXEC-

24

TXO2-

36

TXO2+

35

TXOC-

34

TXOC+

33

TXO3-

32

TXO3+

31

TXE0-

30

TXE0+

29

TXE1-

28

TXE1+

27

TXE2-

26

TXE2+

25

PLL_VDD

48

33VRST_REF

47

RESET_OUT

46

SCLK/PWM0

45

SCSB/PWM1/DDCSCL

44

SDIO[3]/PWM2/DDCSDA

43

VCCK

42

PGND41TXO0-

40

TXO0+

39

TXO1-

38

TXO1+

37

NC / RTD2023L

U403

R428 100 1/16W

\

+3.3V

R427 100 1/16W

\

DDCSDA1

DDCSCL1

R407

15K 1/ 16W

\

RXO0-

33VRST_REF

R3.3DVCC

RST_OUT

B1+

B1-

G1+

G1­SOG1

R1­R1+

AHS1
AVS1

B1+

SOG1

G1+

B1-

R1+

G1-

R1-

AHS1
AVS1

R420
NC

TMDS_VCC

+3.3V

+3.3V

C401
NC

C402
NC

R401
NC

2

X401
NC/24.576MHz

R408

4.7K 1/16W

\

FB403
600 OHM

R412 0 1/16W

\

TMDS_VCC

FB404
600 OHM

DEL R405,R406

FB405
600 OHM

DEL R418

FB401
600 OHM

FB402
600 OHM

R421
1K 1/16W

\

R431 0 1/16W

\

R434 0 1/16W

\

R433 0 1/16W

\

R432 0 1/16W

\

+3.3V

C415

0.1uF

C417

0.1uF

C416

0.1uF

+3.3V

RST_OUT

BJT_B

BJT_B

RXO3-

RXOC+

RXOC-

RXO3+

BRIGHTNESS

VOLUME

+3.3V

C421

0.1uF

C420

0.1uF

XI

XO

R430
NC

RTD_SCLK
RTD_SCSB

SDIO0

SDIO1

RTD_SD3/SDI
SDIO2

+3.3V

1.8DVCC

RXO1+
RXO2­RXO2+

+3.3V

1.8DVCC

RXE3-

RXEC+

RXO0­RXO1-

RXO0+

RXE2+

RXE2-

RXE3+

RXEC-

RXE0+
RXE1+

RXE1-

RXE0-

R404NCR403

0 1/ 16W

\

C419

0.1uF

RXO3+

RXO3-

RXOC+

RXOC-

RXO2-

RXO1+

RXO2+

RXO1-

R3.3DVCC

RXO0-

RXE3­RXE3+

RXO0+

1.8DVCC

1.8DVCC
RXE2-

RXEC+

RXE2+
RXEC-

R1.8DVCC

RXE0-

RXE1+

RXE1-

RXE0+

R411

4.7K 1/ 16W

\

R415

4.7K 1/ 16W

\

C411

0.1uF

DDC_SCL
DDC_SDA

213

Q403

NC/2SB1188

3.3V_Vd

+3.3V

RTD_SD3/SDI

RTD_SCSB

RTD_SCLK

C412

0.1uF

C413

0.1uF

DGND

R410

4.7K 1/ 16W

\

RX1P

RX2N

RX0N

RX1N
RX0P

RX2P

RXCN

RXCP

+

C410

10uF/16V

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

63

Model

Title

Date Rev:

ViewSonic Corporation

SCALER

DVI_POWER

R444

3.3K 1/16W

\

R441

2K 1 /16W

\

FB408 30 OHM

FB407 30 OHM

FB406 30 OHM

R440
1M 1 /16W

\

RXEC+
RXE3+RXE3-

RXEC-

RXE1-

RXE2+

RXE1+

RXE0- RXE0+

DDC_SDA

RXD

DDC_SCL

VGA_B-

C435
NC

VGA_G-

B1+

RX2P

+3.3V

+3.3V

panel interface

ESD solution

ESD solution

RX2N

3

1

2

D406
BAV99

3

1

2

D407
BAV99

RX1N

RX0N

RX1P

RX0P

RXCN

RXCP

R438
100 1/16W

\

C425

0.047uF

SOG1

TXD

FB409 0 OHM

FB411 0 OHM

FB410 0 OHM

ESD solution

PANEL_POWER

3

1

2

D408
BAV99

3

1

2

D409
BAV99

3

1

2

D410
BAV99

3

1

2

D411
BAV99

DDC_SDA

DDC_SCL

BUS_POWER

TXD

DGND

RX2N

RX1N

RX2P

VSIN

RX0P

RX0N

RX1P

CONNECT

RXE0+
RXE1+
RXE2+

RXO1+

RXO0+

RXE3+

RXEC+

AHS1

RXO3+

RXOC+

RXO2+

TXDDGND

RXE1-

RXE0-

RXO3-

DGND RXD

RXE3-

RXEC-

RXE2-

RXO1­RXOC-

RXO2-

RXO0-

DDC_VDDDGND

B1-

G1+

R1+

R1-

G1-

AHS1

DEL ZD1, ADD D28,D29
2005/3/28

AVS1

D401

UDZS5.6B

VSIN

D402

UDZS5.6B

C436
NC

D403

UDZS5.6B

R449 0 1/16W

\

RXE2-

C423
10pF

C430
10pF

C427
10pF

R1+

VSIN

RXOC+

RXO2+
RXO3+

RXO1+

RXO0+

RXOC-

RXO0-

RXO3-

RXO2-

RXO1-

R453
2K 1/16W

\

C432
22pF

R451 100 1/16 W

\

R452
2K 1/16W

\

R450 100 1/16 W

\

C433
10pF

D415 UDZS5.6B

D417 UDZS5.6B

RXCN

RXCP

DVI_DET

DVI_DET

D419 UDZS5.6B

SHIELD connect to Chassis,
Then Chassis connect to
DGND.

AVS1

DDC_SDA

DDC_SCL

R437
100 1/16W

\

C424

0.047uF

D421 UDZS5.6B

DDC2_SCLDGND

DDC_SDADGND

DDC_SCLDGND

DDC2_SDADGND

D416 UDZS5.6B

DDC2_SDA

DDC2_SCL

B1-

VGA_B

D418 UDZS5.6B

HSIN

D420 UDZS5.6B

D422 UDZS5.6B

R4012
0 1/16W

\

DATA2-

1

DATA2+

2

DATA2/4 SHLD

3

DDC CLK

6

DDC DATA

7

A-VSHNC

8

DATA1-

9

DATA1+

10

DATA1/3 SHLD

11

+5v

14

GND

15

H-PLUG-DET

16

DATA0-

17

DATA0+

18

DATA0/5 SHLD

19

CLK+

23

CLK-

24

A-RED

C1

A-GREEN

C2

A-BLUE

C3

A-HSYNC

C4

A-GND

C5

CLK-SHLD

22

DATA4-

4

DATA4+

5

DATA3-

12

DATA3+

13

DATA5-

20

DATA5+

21

CN402

DVI-CON

C453

NC

C454

NC

C455

NC

C426

0.047uF

C422

0.047uF

R436
75 1/16W

\

R447
75 1/16W

\

C429

0.047uF

R435

100 1/16W

\

R446
100 1/16W

\

R439
100 1/16W

\

R443
75 1/16W

\

C456

NC

C457

NC

RXD

C458

NC

C459

NC

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

1
3
5
7

9
11
13
15
17
19
21
23

CN403

CONN

C460

NC

VGA_G

RXCN
RXCP

+3.3V

3

1

2

D412
BAV99

RXCN
RXCP

VGA_R

RX0P

RX0N

+3.3V

RX0P

RX0N

3

1

2

D413
BAV99

3

1

2

D414
BAV99

RX1P

RX1N

+3.3V

RX1P

RX1N

VGA_G

RX2P

RX2N

+3.3V

RX2N
RX2P

VGA_B

C428

0.047uF

R445
100 1/16W

\

G1-

G1+

VGA_R

VGA5V

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

R

G

B

TXD

CONNECT

RAGND

GAGND

BAGND

VGA5V

RXD

DDCSDA

DDCSCL

HSIN

VSIN

CN401

DB15

CONNECT

VGA_BHSIN
VGA_G

C431

0.047uF

R448
100 1/16W

\

VGA_R

VSIN

DDC_VDD

R1-VGA_R-

VGA_B-

VGA_R-

VGA_G-

3

1

2

D404
BAV99

3

1

2

D405
BAV99

C434
NC

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

64

Model

Title

Date Rev:

ViewSonic Corporation

INPUT

C208

0.1uF/25V

C213

0.1uF/25V

R201

2.4KO 1/10W

R218
68KO 1/10W

Q206
KTC5103L-Y-U/P

1

23

C216

0.22uF/25V

TP2
HVO

1

TP3
HVO

1

C205
10pF/3KV

R224

10KO 1/10W

TP1
HVO

1

+12V

O

O O

O

PT202

INVERTER X'FMR

12

11

9

10

3

1

6

8

C215
10pF/3KV

C221

0.0022uF/50V

+

C202

470uF/25V

C217

1uF/25V

CN202
CONN

1
2

C218
1uF/25V

D205

MLL4148

R225
10KO 1/10W

D211

MLL4148

CN201
CONN

1
2R206

220O 1/10W

R203

1.8KO 1/4W

is power GND

Q201

AOU401L

2

1

3

IC201

FM7547

1 14

2 13

3 12

4 11

5 10

6 9

7 8

GND OUT

Vds Vcc1

Vref Vcc

Vms OSC

RCt Css

OLP COMP

SDP Vfb

C212

0.0047uF/50V

R228
330KO 1/8W

C201

0.1uF/25V C203

0.1uF/25V

C223

0.0022uF/50V

Q205

PMBS3906

D215
MLL4148

D206

MLL4148

R229
NC

Q202

DTA144WKA2

13

D213

MLL4148

R214
1KO 1/10W

D210

MLL4148

Q207

KTC5103L-Y-U/P

1

23

C206

0.1uF/25V
D201

RB050L-40

R217
1KO 1/10W

TP4
HVL

1

D209

MLL4148

C210
10pF/3KV

ON/OFF

C211

0.33uF/250V

R213

1.5KO 1/10W

R207

68KO 1/10W

R223
1KO 1/10W

R209
47KO 1/10W

Q204

PMBS3904

R205

1.8KO 1/4W

R221

30KO 1/10W

C204

0.1uF/25V

D216

MLL4148

C214
10pF/3KV

D217
MLL4148

C207

0.22uF/25V

D212

MLL4148

R226
10KO 1/10W

CN204
CONN

1
2

D204

RB050L-40

R211
22KO 1/10W CN203

CONN

1
2

R222
1KO 1/10W

R216

1.5KO 1/10W

L201

47 uH

R212

51KO 1/10W

C225
NC

DIM

R230
NC

D214

MLL4148

R208

2.4KO 1/10W

R220

33KO 1/10W

D208

MLL4148

Q203

DTC144WKA

O

O O

O

PT201

INVERTER X'FMR

12

11

9

10

3

1

6

8

R215
150KO 1/10W

C209

0.001uF /50V

D207

MLL4148

R204

1.8KO 1/4W

R210
470O 1/10W

R227
10KO 1/10W

is signal GND

GND

R219

56KO 1/10W

Q208
PMBS3904

C219

0.047uF/50V

D202

MLL4148

R202

1.8KO 1/4W

C224

0.0022uF/50V

C222

0.0022uF/50V

C220

0.01uF/25V

D203
MLL4148

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65

Model

Title

Date Rev:

ViewSonic Corporation

INVERTER

R908
510KO 1/8W

L901

L

1

4

2

3

R902

330KO 1/8W

R918
75KO 1/10W

L922

L

Q900
2SK2645-54MR

D901
UF4003

+

C924
1000uF/25V

R919
100KO 1/10W

+

C922
1000uF/25V

L902

L

1

4

2

3

R909
100KO 2W TYPE F

LD7552

IC901
LD7552

1 3

4

72

5 6

8

O

O

O

T901

4

12

6

1

2

10

8

9

7

11

ZD920

PTZ9.1B

1 2

D900
BA159GR904

430KO 1/8W

DIM

R914
10KO 1/10W

C920

0.001uF/500V

D920
FME-210B

1

2

3

F902
0O 1/8W

ON/OFF

ZD922

RLZ5.1B

1 2

R922
220O 1/4W

C932

0.0022uF/250V

IC902

PC123FY2 4P

12

43

R905
430KO 1/8W

C900 0.47uF/250V

D921

31DQ06

ZD921
RLZ13B

1 2

C931

0.1uF/50V

CN901

SOCKET

12

3

C927

0.1uF /50V

R906
510KO 1/8W

IC921

KIA431A-AT/P

2 3

1

+

C906

22uF/50V

- +

DB901
KBP206G

1 4

32

+

C923
1000uF/16V

IC903
KIA431A-AT/P

R925
1KO 1/10W

+5V

+12V

R929

2.4KO 1/10W 1%

R915
10KO 1/10W

R921
47O 1/2W

SW901

SW

R928

3.9KO 1/10W

R926
33KO 1/10W 1%

R903
430KO 1/8W

R917
100O 1/8W

L921

L

C929
NC

R920
47O 1/2W

C901

0.001uF/250V

+

C925
470uF/25V

R907
510KO 1/8W

C904

1500pF/1KV

R924

3.6KO 1/10W 1%

C934

0.022uF/25V

C921

0.001uF/500V

t

NR901
NTCR

12

+5V

+12V

D923

MLL4148

CN903

CONN

1
2
3
4
5
6
7
8
9
10

R923
NC

C905

0.1uF/50V

R916

0.33O 2W

R912

10O 1/4W

C902

0.001uF/250V

R900

330KO 1/8W

C907
220PF/25V

R901 330KO 1/8W

C908

0.1uF/25V

R913

1KO 1/10W

+

C903
100uF/450V

R911
100KO 1/10W

+

C926
470uF/16V

R910

2.2O 1/8W

D922

MLL4148

VAR901 NC

C930

0.1uF /50V R927
1KO 1/10W

F901

FUSE

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

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Model

Title

Date Rev:

ViewSonic Corporation

A-D POWER

12V

GND

MUTE

2

4

6

8

10

12

14

1

3

5

7

9

11

13

CN202

pin header2*7 2mm female

+

C202

680uF/25V

+

C201

680uF/25V

+

C209

1.0uF

R203 18K 1/16W

\

C204 0.47uF/25V

R211

20K 1/16W

\

C211

100pF

1
4

5

2

3

CN201

PHONEJACK

C213

0.1uF

GND1GND2GND

3

INL

4

VAROUT_L

5

VOLUME

6

VAROUT_R

7

NC

8

INR

9

SVR

10

STBY

11

MUTE

12

GND

13

OUTR

14

VS15VS

16

OUTL

17

GND18GND19GND

20

U201
TDA7496L

C203

0.1uF

C212
100pF

R207

1K

\

R210

20K 1/16W

\

R208

1K

\

C206 0.47uF/25V

R201

18K 1/16W

\

+12V

+

C205

470uF/16V

+

C207

470uF/16V

GND

+

C208

470uF/16V

R212

200

\

OUT_R

OUT_L

GND

GND

GND

GND

GND

+

C210

1.0uF

STANDBY

GND

VOLUME

1

2

3

CN204

NC

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

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Model

Title

Date Rev:

ViewSonic Corporation

AUDIO

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

68

Model

Title

Date Rev:

ViewSonic Corporation

KEY PAD

LED GREEN
KEY UP

SW001
SW

KEY 1
KEY DOWN

LCD ON/OFF

GND

LCD ON/OFF
KEY 2
KEY 1
KEY DOWN
KEY UP

GND

MUTE

2
4
6
8
10
12

1
3
5
7
9

11

CN006

CONN

LED ORANGE
LED GREEN

SW003
SW

SW004
SW

SW005
SW

SW006
SW

GND
SPKR_R+SPKR_L+

KEY 2

GND

1
2

CN002

CONN

1
2

CN003

CONN

GND

GND

GND

SPKR_R+

SPKR_L+

MUTE

SW002
SW

LED ORANGE

DP2
LED

1 2

FB001

120 OHM

1 2

FB002

120 OHM

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11. PCB Layout Diagrams

11.1 MAIN BOARD PCB TOP VIEW

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

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11.2 MAIN BOARD PCB BUTTON VIEW

11.3 KEYBOARD TOP VIEW

11.4 KEYBOARD BUTTON VIEW

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71

11.5 POWER PCB TOP VIEW

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

72

11.6 POWER PCB BUTTON VIEW

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

73

11.7 AUDIO PCB TOP VIEW & BUTTON VIEW

ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2

74

* Reader’s Response*

Dear Readers:

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

Assessment

A. What do you think about the content of this Service Manual?

Unit Excellent Good Fair Bad

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram and Exploded Parts List

9. Block Diagrams

10. Schematic Diagrams

11.PCB Layout Diagrams

B. Are you satisfied with this Service Manual?

Item Excellent Good Fair Bad

1. Service Manual Content

2. Service Manual Layout

3. The form and listing

C. Do you have any other opinions or suggestions regarding this service manual?

Reader’s basic dada:

Name:

Title:
Company:
Add:
Tel:

Fax:

E-mail:

After completing this form, please return it t o View Sonic Qu ality A ssuranc e in th e USA at f acsimile
1-909-839-7943. You may also e-mail any su gg estions to the Director, Quality Systems & Processes
([e-mail])