ViewSonic VA712-2, VA712b-2, VS10901 Service manual

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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 – (800) 888-8583

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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.

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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)

Horizontal: 140 °

Viewing Angle

Vertical: 130 °

Contrast Ratio

Brightness

500：1 (Typ.) 300 cd/㎡(Typ.)

Response Time 8ms(Typ.)

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

Maximum Pixel Clock 135 MHz

Horizontal Frequency

Vertical Refresh Rate

30 – 82 kHz

50 – 85 Hz.

Operating: 0°C to +40°C

Temperature

Storage: -20°C to +60°C

Input Signal Analog / Digital

Energy Star compliant VESA

Power Management

DPMS compatible

≦1 W Input Voltage : 90V~264ACV，50~60Hz(auto switch)

Power

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

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

SIGNAL LEVEL

11 No connection

12 (SDA)

Horizontal sync (Composite

sync)

14 Vertical sync

15 (SCL)

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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.

Toggle 720x400 and 640x400 mode when input 720x400

[1] + [2]

or 640x400 mode

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

• 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

[1] + [▼]

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.

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

any buttons are pressed the message OSD Locked will

[1] + [▲]

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.

Monitor Block Diagram

Power Board

(Include: adapter, inverter)

AC-IN

100V-240V

CCFL Drive.

Key Board

Flat Panel and

CCFL backlight

Main Board

HOST Computer

RS232 Connector For white balance adjustment in factory mode

Video signal, DDC

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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

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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:

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）

51 121 120

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

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

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

2 APLL_VDD

Power for digital PLL（3.3V） 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 57/119 SCLK

Serial control I/F chip select（Open drain） 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

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

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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

Name

NC 1 39 DA0/P5.0 2 40 DA1/P5.1 3 41 DA2/P5.2 4 42 DA3/P5.3 5 43 DA4/P5.4 6 44 DA5/P5.5 7 1 P5.6/HSCL2 8 2 P5.7/HSDA2 9 3 RST 10 4 HSCL1/P3.0/RXD 11 5 HSDA1/P3.1/RXD 13 7 P3.2/INT0 14 8

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Pin No.

PLCC QFP

DESCRIPTION

No connection PWM DAC output/General purpose I/O (open drain) PWM DAC output/General purpose I/O (open drain) PWM DAC output/General purpose I/O (open drain) PWM DAC output/General purpose I/O (open drain) PWM DAC output/General purpose I/O (open drain) PWM DAC output/General purpose I/O (open drain) General purpose I/O/Slave llC1 SCL2（open drain） General purpose Output/Slave llC1 SCL2（open drain） High Active RESET Slave IIC clock/General purpose I/O/Rxd (open drain) Slave IIC clock/General purpose I/O/Txd (open drain) General purpose I/O/External interrupt 0(Standard 8051)

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P3.3/INT1 15 9 P3.4/T0 16 10 P3.5/T1 17 11 P7.6/CLKO2 18 12 P7.7 19 13 X2 20 14 X1 21 15 VSS 22 16 P6.0/AD0 24 18 P6.1/AD1 25 19 P6.2/AD2 26 20 P6.3/AD3 27 21 P6.4 28 22 P6.5 29 23 P6.6/CLKO1 30 24 P6.7 31 25 VSYNC 32 26 P1.7 36 30 P1.6 37 31 P1.5 38 32 P1.4 39 33 P1.3 40 34 P1.2 41 35 P1.1 42 36

P1.0/ET2

VCC 44 38

General purpose I/O/External interrupt 1(Standard 8051) General purpose I/O/T0 Ext. Counter/Timer 0(Standard8051) General purpose I/O/T1 Ext. Counter/Timer 1(Standard8051) General purpose I/O/Clock out 2 (CMOS) General purpose I/O (CMOS) Crystal Out Crystal In Ground General purpose I/O(COMS)/6-bit ADC channel 0 input General purpose I/O(COMS)/6-bit ADC channel 1 input General purpose I/O(COMS)/6-bit ADC channel 2 input General purpose I/O(COMS)/6-bit ADC channel 3 input General purpose I/O(COMS) General purpose I/O(COMS) General purpose I/OCLKO1(COMS) General purpose I/O(COMS) VSYNC input General purpose I/O(Standard 8051/CMOS) General purpose I/O(Standard 8051/CMOS) General purpose I/O(Standard 8051/CMOS) General purpose I/O(Standard 8051/CMOS) General purpose I/O(Standard 8051/CMOS) General purpose I/O(Standard 8051/CMOS) General purpose I/O(Standard 8051/CMOS) General purpose I/O/External Counter/Timer2(Standard

8051/CMOS)

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

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 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

B、MEM.CHANNEL10 ( 6500 color):

2 ,

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

Y > 260 cd/m

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

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

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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

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、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

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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

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)

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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

Function Test Display Pattern

Item Test Content Pattern Specification Remark

Frequency &

Tracking Contrast/Bright ness

Fine Line Moire

16 Gray Scale

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

Figure 1

Figure 2

Horizontal and Vertical

3 Boundary

Horizontal&Vertical Thickness

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.

RGB Color Performance

RGB Color Intensities

Screen Uniformity &

Full White

Flicker

Dead Pixel/Line

White Screen & Dark Screen

The screen must have

7 White Balance White & Black Pattern

the pure white and black

Figure 9

pattern, no other color.

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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

1.1.2. Disassemble process

 Glove

 Big cross screwdriver

 Small cross screwdriver

 Prize equipment or abandoned IC card

 Screw box

 Cushion

 Six angle sleeve spanner

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）

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

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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

Accessories:

Board Assembly:

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

Cabinets:

7 REAR COVER C-00005613 34G1751 KR 2B 1PCS 8 BASE ASSY C-00005649 34G1754 KR B 1PCS 9

Cables:

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

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:

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:

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:

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

POWER CORD A-00004962 89G404A18N LS 1PCS AUDIO BOARD B-00004963 AUPC780B3P 1PCS

FRONT PANEL (BEZEL) C-00005612 34G1750AKD B 1PCS

SIGNAL CABLE CB-00003768 89G 728HAA902 1PCS

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

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

MAIN FRAME HW-00005623 15G8267 1 1PCS

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

RECOMMENDED SPARE PARTS LIST (VA712-2)

Description

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

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RECOMMENDED SPARE PARTS LIST (VA712b-2)

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

Serial No. Prefix: PX7

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

Accessories:

Board Assembly:

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

Cabinets:

7 REAR COVER C-00005655 34G1751 4Z B 1PCS 8 BASE C-00005665 34G1754 4Z B 1PCS 9

Cables:

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:

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:

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:

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:

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:

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

Remark 1: Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR

Description

POWER CORD A-00003716 89G402A18N LS 1PCS AUDIO BOARD B-00004963 AUPC780B3P 1PCS

FRONT PANEL (BAZEL) C-00005654 34G1750A4Z B 1PCS

SIGNAL CABLE CB-00003768 89G 728HAA902 1PCS

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

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

MAIN FRAEM HW-00005623 15G8267 1 1PCS

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

CARTON P-00005662 J44G3783709 1C 1PCS

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

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

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

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BOM LIST (VA712-2)

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

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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

Page 57

BOM LIST (VA712b-2)

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

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

Page 58

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

Page 59

8. Exploded Diagram and Exploded Parts List

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

Page 60

ViewSonic Model Number: VS10901-1W

EXPLODED PARTS LIST (VA712-2)

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

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

Page 61

ViewSonic Model Number: VS10901-3W

EXPLODED PARTS LIST (VA712b-2)

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

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

Page 62

Packing for Shipping

PACKING PART LIST ( VA712-2 )

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 (VA712b-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

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

Page 63

9. Block Diagram

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

Page 64

10. Schematic Diagrams

BL_ADJ

BL_ON_OFF

PANEL_PW

+12V

1 3 5 7 9

C708 1uF/16V

0805

R709 220 1/16W

C711

0.1uF

CN701

CONN

R701 10K 1/16W

R723 10K 1/16W

2 4 6 8 10 12

+5V

R704 1K 1/16W

\

Q701

PMBS3904

+5V

R708 NC / 1K 1/16W

\

Q702

PMBS3904

+5V

\

R722 4.7K 1/16W

\

C718

0.1uF

BL_ON_OFF BL_ADJ

\

R705 10K 1/16W

\

R710

4.7K 1/16W

\

delete R715,R720,C712

R716 10K 1/16W

\

Q704 PMBS3904

D701 SMAL140

+12V

C701

100uF/25V

BRIGHTNESS

BACKLIGHT

PANEL_POWER

R721 51K 1/16W

\

C717

0.1uF

VCC+5V +5V

100uF/25V

U703 AO3401L

C720

10uF/16V

VCC+5V

2N3904 2N3906

C713

C702

470uF/16V

C704

0.1uF

C716

0.1uF

R724 10K 1/16W

\

+3.3V

TO-263

U701

VIN

ADJ

AIC1084-33PM

+5V

R717 NC

VOUT

R718 0 1/16W

\

OUT_L+ OUT_L-

VCC+5V

D702

GS1D

+3.3V

C703

100uF/25V

VOL_ADJ

OUT_L- OUT_R-

VOL_ADJ

+12VA

+5VA

C705

0.1uF

FB701 600 OHM

+3.3V

3.3V_Vd

1 3 5 7

9 11 13

CN702

C719

100uF/25V

2 4 6 8 10 12 14

C714 1uF/16V

0805

U702 NC / AP1117 1.8V

VIN

VOUT

GND

C707

0.1uF

FB702 600 OHM

FB703

600 OHM

R706 10K 1/16W R707 10K 1/16W

OUT_R+OUT_L+

C709

0.1uF

C715

0.1uF

C710

0.1uF

R712 10K 1/16W

\

C706

100uF/25V

DGND

+5V+12V

1.8DVCC

DEL R702,R703

ADC_1.8AVCC

RTD_1.8DVCC

\

STDBY

\

MUTE

OUT_R+ OUT_R-

+5V

R711 NC

R713 0 1/16W

R714 NC

\

VOLUME

BQ703

ViewSonic Corporation

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

Model

POWER

Title

Date Rev:

Page 65

CN404

C443

R455 NC R457 0 1/16W R459 100 1/16W R461 100 1/16W

R4019 100 1/16W

C451

0.001uF

KEY_B

\ \

ENTER_KEY

\

LEFT_KEYRIGHT_KEY

\

KEY_C

MCU_VCC

R454 NC

KEY_A

R456 0 1/16W

LED_GREEN LED_ORANGE

AUTO_KEY

POWER_KEY

\

R458 100 1/ 16W

\

R460 100 1/ 16W

\

R462 100 1/ 16W

\

C438

C437

0.001uF

C439

0.001uF

C440

0.001uF

OUT_L+ OUT_L-

11 13 15

OUT_R+

OUT_R-

C441

C442

0.001uF

LED_ORANGE

LED_GREEN

KEY_B

R473

470 1/16W

\

R491

470 1/16W

\

DDC_SCL DDC_SDA

MCU_VCC

C E

MCU_VCC

C E

MCU_VCC

Q404 PMBS3906

Q405 PMBS3906

R4006

Q406

R4014 NC

R4009 NC

R487

BRIGHTNESS ENTER_KEY RIGHT_KEY LEFT_KEY POWER_KEY

R488

\

4.7K 1/16W

VOLUME

KEY_C KEY_A

AUTO_KEY

IICSCL

IICSDA CONNECT DDC_SDA

DDC_SCL

TXD

RXD

VGA5V

KEY-B

R4010

4.7K 1/16W

\

4.7K 1/16W

R4027 100 1/16W

\

R4026 100 1/16W

\

R477

R478

R4023

\

4.7K 1/16W

R492 4.7K 1/16W R493 4.7K 1/16W R495 100 1/16W R499 100 1/16W

AUTO_KEY

R4001 150 1/16W

\

R4002 100 1/16W R4003 100 1/16W R4004 100 1/16W R4005 100 1/16W

C449

0.1uF

MCU_VCC

R479

\

4.7K 1/16W

\

\ \ \

\ \ \ \

+5V

8 7 6 5

R480

R481

\

4.7K 1/16W

D423 BAV70

U405

VCC WP SCL SDA

M24C02WMN6

GND

+3.3V

DEL R463,R472

+3.3V

MCU_RST

R483

R4013

R476

4.7K 1/16W

\

4.7K 1/16W

EDID_WPEDID_WP

DDC2_SCL

DDC2_SDA

R482

\

4.7K 1/16W

R4024

R484

\

4.7K 1/16W

BUS_POWER

R4025

\

4.7K 1/16W

R486

R485

R4022

\

4.7K 1/16W

R4011

4.7K 1/16W

\

4.7K 1/16W

R4028 100 1/16W

\

R4029 100 1/16W

\

4.7K 1/16W

+5V

C446

D424 BAV70

U406

VCC

SCL

SDA

M24C02WMN6

10pF

C450

0.1uF

2 3 4 5 6 7 8 9

14 15 16 17 18 19

13 11

U402

P5.0/DA0 P5.1/DA1 P5.2/DA2 P5.3/DA3 P5.4/DA4 P5.5/DA5 HSCL2/P5.6 HSDA2/P5.7

P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 P7.6/CLKO P7.7

HDA1/TX/P3.1 HCL1/RX/P3.0

X402

24MHz

R4007

6.8K 1/16W

GND

\

C447 10pF

RST

VCC

MTV512

XTAL220XTAL121VSS

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

VSYNC

P6.6/CLK0

P6.3/AD3 P6.2/AD2 P6.1/AD1 P6.0/AD0 NC

R464

P6.7 P6.5

P6.4

\

4.7K 1/16W

R465

\

4.7K 1/16W

31 30 29 28 27 26 25 24

R467

R466

\

10K 1/16W

4.7K 1/16W

MCU_VCC

R442 100 1/16W

DDC_WP

10K 1/16W

R468

\

10K 1/16W

R489 10K 1/16W

\

R4016

22K 1/16W

\

R4017

\

R470

R469

\

10K 1/16W

\

EEPROM_WP

R471

\

10K 1/16W

C445 NC

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

DDC_WP

R4008

4.7K 1/16W

\

C452

0.1uF

M512_XOUT EEPROM_WP

DVI_DET

IICSCL IICSDA

Q407 PMBS3904

R4015 NC

R4018 NC

MCU_VCC

R497

10K 1/16W

\

MCU_VCC

U404

VCC

SCL

M24C16

EDID_WP

NC NC NC

VSS4SDA

BACKLIGHT PANEL_PW

SDIO0 3 SDIO1 3 SDIO2 3

RTD_SD3/SDI 3 RTD_SCSB RTD_SCLK

R498 10K 1/16W

\

1 2 3

KEY-B STDBY MUTE

C448

0.1uF

ViewSonic Corporation

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

Model

MCU

Title

Date Rev:

Page 66

RTD_SD3/SDI SDIO2 SDIO1 SDIO0

+3.3V

C407

0.1uF

R412 0 1/ 16W

\

+3.3V

MCU_RST

XO XI DGND AVS1 AHS1 B1B1+ G1G1+ SOG1 R1R1+

DEL R405,R406

15K 1/16W

30K 1/16W

R3.3DVCC

U403

PLL_VDD

PLL_GND

AVS/VCLK

AHS/V0

B-/V1

B+/V2

G-/V3

G+/V4

SOG/V5

R-/V6

R+/V7

ADC_GND13ADC_VDD14PWM0/SDIO[3]15PWM1/DDCSCL/SCSB

DGND

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

R407

\

3.3Vuse 15K and 30K )

R409

\

RST_OUT

RTD_SCLK

RTD_SCSB

33VRST_REF

RTD_SD3/SDI

SCLK/PWM0

RESET_OUT

33VRST_REF

SCSB/PWM1/DDCSCL

SDIO[3]/PWM2/DDCSDA

NC / RTD2023L

PWM2/DDCSDA/SCLK

BJT_CTRL18VCCK19PGND20TXE3+21TXE3-22TXEC+23TXEC-

DDCSDA1

R1.8DVCC R1.8DVCC

DDCSCL1

R1.8AVCC

BJT_B

+3.3V

RXE0-

RXE1+

RXE1-

RXE0+

DGND

VCCK

PGND41TXO0-

TXO1-

TXO0+

DGND

RXO3+

RXO3-

RXOC+

RXOC-

TXO1+

TXO2+ TXOC-

TXOC+

TXO3+

TXE0+

TXE1+

TXE2+

TXO2-

TXO3-

TXE0-

TXE1-

TXE2-

RXE2-

RXE2+

RXEC-

RXEC+

RXE3-

RXE3+

RXO0-

RXO0+

RXO1-

RXO1+

RXO2-

RXO2+

ViewSonic Corporation

Model

SCALER

FB402

R3.3DVCC

600 OHM

Closed to Scaler

C401 NC

R401 NC

C402 NC

R402 0 1/16W

M512_XOUT

Closed to Crystal

1.8DVCC

FB401

RX2P RX2N

RX1N RX0P

RX0N RXCP

RXCN

RX1P

600 OHM

C411

0.1uF

10uF/16V

R416 0 1/16W R417 0 1/16W

R419 0 1/16W R422 0 1/16W

R423 0 1/16W R424 0 1/16W

R425 0 1/16W R426 0 1/16W

B1-

B1+

G1-

G1+

SOG1

R1-

R1+

AHS1

AVS1

C410

XO XI

\ \

R427 100 1/16W R428 100 1/16W

1.8DVCC

FB403

+3.3V

1.8DVCC

600 OHM

C414

C415

0.1uF

R411

R410

4.7K 1/16W

R413NCR414

C416

0.1uF

FB405 600 OHM

10uF/16V

TMDS_VCC

C418

C417

0.1uF

\

R420 NC

R1.8AVCC

TMDS_VCC

R415

4.7K 1/16W

R421 1K 1/16W

C420

0.1uF

\

C421

0.1uF

DDC_SCL

DDC_SDA

VOLUME BRIGHTNESS

4.7K 1/16W

\

FB404

+3.3V

600 OHM

1.8DVCC

C419

0.1uF

+3.3V

X401 NC/24.576MHz

\

R1.8DVCC

C412

C413

0.1uF

DGND

U401

127

128

125

DPLL_VDD

126

DPLL_GND

APLL_GND

APLL_VDD

PLL_TEST1 / TCON0 / TCON3

PLL_TEST2 / TCON1 / TCON12

TMDS_TST / PWM0 / TCON2

REXT

TMDS_VDD

RX2P

RX2N

TMDS_GND

RX1P

RX1N

TMDS_VDD

RX0P

RX0N

TMDS_GND

RXCP

RXCN

AVS0

AHS0

ADC_VDD

ADC_GND

B0+

B0-

SOG0

G0+

G0-

R0+

R0-

B1- / V7

B1+ / V6

G1- / V5

G1+ / V4

SOG1 / V3

R1- / V2

R1+ / V1

ADC_GND

ADC_VDD

AHS1 / V0

AVS1 / VCLK

DDCSCL1

\

DDCSDA1

\

0 1/16W

\

117

116

VCCK

GNDK

RTD2523B ( RSDS & LVDS )

DDCSCL1 / TCON4

DDCSDA1 / TCON951SCLK / TCON3

SDIO[3] / TCON0

SDIO[2] / TCON11

SDIO[1] / TCON7

SDIO[0] / TCON1352PWM1 / TCON0 / COUT

C403

0.1uF

R1.8DVCC

When RTD2333, R403= NC/R404 =

R404NCR403

0; Otherwise, R403 = 0/R404 = NC

107

108

PVCC59PVCC72PVCC83PVCC95PVCC

PGND60PGND71PGND84PGND96PGND

DDCSCL2 / VCLK / TCON4

DDCSDA2 / V7 / TCON6

SDIO[3] / V4 / TCON9 SDIO[2] / V3 / TCON5 SDIO[1] / V2 / TCON8

SDIO[0] / V1 / TCON10

BJT_B58BB3P/BBLU761BB3N/BBLU662BB2P/BBLU563BB2N/BBLU464BB1P/BBLU365BB1N/BBLU266BCLKP/BGRN767BCLKN/BGRN668BG3P/BGRN5

SCSB / TCON1256PWM2 / TCON1/TCON7

BJT_B

3.3V_Vd

C405

C404

0.1uF

C408

C409

0.1uF

DGND

33VRST_REF

RESET_OUT

TCON9 / PWM0

SCLK / V6 / TCON3

SCSB / V5 / TCON7

V0 / TCON2/PWM1

TCON13 / COUT

33VPNLOUT

AR1N AR1P AR2N AR2P AR3N AR3P AG1N AG1P AG2N AG2P

AG3N / TXO0-

AG3P / TXO0+

ACLKN / TXO1-

ACLKP / TXO1+

AB1N / TXO2-

AB1P / TXO2+ AB2N / TXOCAB2P / TXOC+

AB3N / TXO3-

AB3P / TXO3+

BR1N / TXE0-

BR1P / TXE0+

BR2N / TXE1-

BR2P / TXE1+

BR3N / TXE2-

BR3P / TXE2+ BG1N / TXECBG1P / TXEC+

BG2N / TXE3-

BG2P / TXE3+

BG3N/BGRN4

+3.3V

R431 0 1/16W R432 0 1/16W R433 0 1/16W R434 0 1/16W

\ \ \ \

C406

22uF/16V

DGND

124 123 122 121 120 119 118 115 114 113 112 111 110 109

106 105 104 103 102 101 100 99 98 97

94 93 92 91 90 89 88 87 86 85

82 81 80 79 78 77 76 75 74 73

BJT_B

Q401

PMBS3906

33VRST_REF RST_OUT

RXE0RXE0+ RXE1RXE1+ RXE2RXE2+ RXECRXEC+ RXE3RXE3+

RXO0RXO0+ RXO1RXO1+ RXO2RXO2+ RXOCRXOC+ RXO3RXO3+

Q402

PMBS3906

NC/2SB1188

DEL R418

RXE0RXE0+ RXE1RXE1+ RXE2RXE2+ RXECRXEC+ RXE3RXE3+

RXO0RXO0+ RXO1RXO1+ RXO2RXO2+ RXOCRXOC+ RXO3RXO3+

1.8DVCC

Q403

213

4.7K 1/16W

R430 NC

1.8DVCC

R408

\

RTD_SCLK RTD_SCSB

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

Title

Date Rev:

Page 67

FB406 30 OHM

VGA_B

VGA_B-

FB407 30 OHM

VGA_G

VGA_G-

FB408 30 OHM

VGA_R

HSIN VSIN

VSIN

D401

D402

UDZS5.6B

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

DDC_SCL

VSIN

DDC_SDA

RXD

ESD solution

+3.3V

R436 75 1/ 16W

R443 75 1/ 16W

R447 75 1/ 16W

R452 2K 1/ 1 6W

DDCSCL

DDCSDA

C434 NC

C435 NC

C436 NC

FB409 0 OHM

\

FB410 0 OHM

\

FB411 0 OHM

\

VSIN

HSIN

13 12

RXD

D412 BAV99

D413 BAV99

D414 BAV99

R449 0 1/16W

R453

\

2K 1/ 1 6W

CN401

5 10 4 9 3 8 2 7 1 6

DB15

VGA_R

VGA_G

VGA_B

\

CONNECT

TXD VGA5V B BAGND G GAGND R RAGND

C423 10pF

C427 10pF

C430 10pF

100 1 /16W

R435

\

R437

\

100 1/ 16W

R438

\

100 1/ 16W

R439

\

100 1/ 16W

R445

\

100 1/ 16W

R446

\

100 1/ 16W

R448

\

100 1/ 16W

R450 100 1/ 16 W

\

R451 100 1/ 16 W

\

C432 22pF

CONNECT

TXD DDC_VDD VGA_BHSIN VGA_BVGA_G VGA_GVGA_R VGA_R-

DGND

DGND RXD

ESD solution

C422

0.047uF

C424

0.047uF

C425

0.047uF

C426

0.047uF

C428

0.047uF

C429

0.047uF

C431

0.047uF

C433 10pF

TXD VGA5V

D415 UDZS5.6B

D417 UDZS5.6B

D419 UDZS5.6B

D421 UDZS5.6B

B1-

G1+

R1+

R1-VGA_R-

AHS1 AVS1

B1+

B1-

G1+

R1+

R1-

AHS1 AVS1

CONNECT

DDC_VDDDGND

TXDDGND

SOG1

R440 1M 1/16W

\

G1-

ESD solution

RX0N

RX0P

+3.3V

C453

D404 BAV99

D416 UDZS5.6B

D418 UDZS5.6B

D420 UDZS5.6B

D422 UDZS5.6B

CN402

RX2N RX2P

RX1N RX1P

R441

2K 1/ 16 W

\

RX0N

RX0P

R444

3.3K 1 /16W

\

RXCP

RXCN

RXE0- RXE0+ RXE1RXE2RXEC-

RXO0RXO1RXO2RXOCRXO3-

DVI_POWER

DVI_DET

DDC2_SCL DDC2_SDA

DVI_DET

D403

UDZS5.6B

RXE0RXE1RXE2RXECRXE3RXO0RXO1RXO2RXOCRXO3-

RX2N RX2P

RX1N RX1P

BUS_POWER

panel interface

RXCN

RXCP

D405 BAV99

C454

+3.3V

DDC_SCLDGND

DDC_SCL

DDC_SDADGND

DDC_SDA

DDC2_SCLDGND

DDC2_SDADGND

C455

D406 BAV99

D407 BAV99

C456

+3.3V

RX1N RX1P

D408 BAV99

C457

DATA2-

DATA2+

DATA2/4 SHLD

DATA4-

DATA4+

DDC CLK

DDC DATA

A-VSHNC

DATA1-

DATA1+

DATA1/3 SHLD

DATA3-

DATA3+

+5v

GND

H-PLUG-DET

DATA0-

DATA0+

DATA0/5 SHLD

DATA5-

DATA5+

CLK-SHLD

CLK+

CLK-

A-RED

A-GREEN

A-BLUE

A-HSYNC

A-GND

SHIELD connect to Chassis, Then Chassis connect to DGND.

CN403

CONN

D409 BAV99

C458

DVI-CON

RXE0+

RXE1+

RXE2+

RXEC+

RXE3+RXE3-

RXE3+

RXO0+

RXO1+

RXO2+

RXOC+

RXO3+

PANEL_POWER

R4012 0 1/16W

\

RX2N

RX2P

+3.3V

C459

D410 BAV99

D411 BAV99

C460

ViewSonic Corporation

Model

INPUT

Title

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

Date Rev:

Page 68

+12V

ON/OFF

C201

0.1uF/25V C203 Q203

DTC144WKA

C209

0.001uF /50V

R209 47KO 1/10W

Q202

DTA144WKA2

C204

0.1uF/25V

C212

0.0047uF/50V

C202

470uF/25V

C207

0.22uF/25V

0.1uF/25V

C208

0.1uF/25V

C213

R201

2.4KO 1/10W

220O 1/10W

R208

2.4KO 1/10W

C206

0.1uF/25V

Q204

AOU401L

PMBS3904

R210 470O 1/10W

Q201

D201

RB050L-40

Q205

PMBS3906

L201

47 uH

D202

MLL4148

D204

RB050L-40

D203 MLL4148

R207

68KO 1/10W

TP2

TP1

HVO

1 2R206

1 2

CN201 CONN

CN202 CONN

CONN

R203

R202

1.8KO 1/4W

C211

0.33uF/250V

Q206 KTC5103L-Y-U/P

R211 22KO 1/10W CN203

R204

1.8KO 1/4W

Q207

KTC5103L-Y-U/P

R205

1.8KO 1/4W PT201

O O

8 3

INVERTER X'FMR

PT202

O O

C205 10pF/3KV

C210 10pF/3KV

TP3

TP4

HVO

HVL

IC201

DIM

FM7547

56KO 1/10W

33KO 1/10W

30KO 1/10W

GND

R220

R229 NC

R219

R221

GND OUT

Vds Vcc1

Vref Vcc

Vms OSC

1 14

2 13

3 12

4 11

C220

0.01uF/25V

ViewSonic Corporation

Model

Title

Date Rev:

INVERTER

RCt Css

OLP COMP

5 10

6 9

R218 68KO 1/10W

C219

0.047uF/50V

7 8

SDP Vfb

C218 1uF/25V

R230 NC

C225 NC

D211

MLL4148

Q208 PMBS3904

R212

51KO 1/10W

C216

0.22uF/25V

is power GND

is signal GND

R215 150KO 1/10W

C217

1uF/25V

R213

1.5KO 1/10W

R216

1.5KO 1/10W

R228 330KO 1/8W

D214

MLL4148

D216

MLL4148

D205

MLL4148

D207

MLL4148

D206

MLL4148

D208

MLL4148

D209

MLL4148

R226 10KO 1/10W

C221

0.0022uF/50V

R214 1KO 1/10W

R217 1KO 1/10W

D212

MLL4148

R224

10KO 1/10W

8 3

INVERTER X'FMR

R222 1KO 1/10W

D215 MLL4148

D217 MLL4148

C222

0.0022uF/50V

C214

D210

MLL4148

R227 10KO 1/10W

C223

0.0022uF/50V

10pF/3KV

C215 10pF/3KV

D213

R223 1KO 1/10W

R225 10KO 1/10W

C224

0.0022uF/50V

1 2

CN204 CONN

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

Page 69

R900

330KO 1/8W

VAR901 NC

DB901 KBP206G

- +

1 4

L902

L901

C900 0.47uF/250V

R901 330KO 1/8W

330KO 1/8W

C902

0.001uF/250V

C901

0.001uF/250V

R902

NR901 NTCR

F901

FUSE

SW901

C920

R920

0.001uF/500V

47O 1/2W

D920

T901

C904

D901 UF4003

R915 10KO 1/10W

R909 100KO 2W TYPE F

D900 BA159GR904

R910

2.2O 1/8W

Q900 2SK2645-54MR

R916

0.33O 2W

C908

0.1uF/25V

R906 510KO 1/8W

R907 510KO 1/8W

R908 510KO 1/8W

C934

0.022uF/25V

R912

10O 1/4W

R913

1KO 1/10W

C907 220PF/25V

1500pF/1KV

C906

22uF/50V

R918 75KO 1/10W

R919 100KO 1/10W

R903

IC901 LD7552

R914 10KO 1/10W

430KO 1/8W

R905 430KO 1/8W

LD7552

5 6

1 3

R917 100O 1/8W

IC903 KIA431A-AT/P

C903 100uF/450V

C905

0.1uF/50V

R911 100KO 1/10W

6 2

C932

0.0022uF/250V

12 11

8 7

IC902

PC123FY2 4P

IC921

KIA431A-AT/P

2 3

FME-210B

R921

C921

47O 1/2W

0.001uF/500V

D921

31DQ06

R922 220O 1/4W

R925 1KO 1/10W

C930

0.1uF /50V R927

R928

3.9KO 1/10W

ZD921 RLZ13B

C922 1000uF/25V

C923 1000uF/16V

1 2

MLL4148

1KO 1/10W

D922

L921

C924 1000uF/25V

L922

ZD922

RLZ5.1B

1 2

D923

MLL4148

R923 NC

C929 NC

C925 470uF/25V

C926 470uF/16V

R924

3.6KO 1/10W 1%

R929

2.4KO 1/10W 1%

F902 0O 1/8W

R926 33KO 1/10W 1%

CN903

CONN

+12V

ZD920

PTZ9.1B

1 2

+5V

1 2 3 4 5 6 7 8 9 10

ON/OFF

+5V

C931

0.1uF/50V

DIM

C927

0.1uF /50V

+12V

CN901

SOCKET

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

ViewSonic Corporation

Model

Title

Date Rev:

A-D POWER

Page 70

CN201

PHONEJACK

CN204

OUT_L

MUTE

OUTL

OUTR

SVR

VAROUT_R

VAROUT_L

GND

GND18GND19GND

+12V

680uF/25V

C201

U201 TDA7496L

17 14 10 7 5

C208

C202

680uF/25V

R207

470uF/16V

GND

\

C203

0.1uF

C205

470uF/16V

C207

R208

\

OUT_R

14 12 10 8 6 4 2

INL INR VOLUME STBY MUTE

12V

GND1GND2GND

CN202

pin header2*7 2mm female

13 11

9 7

GND

C210

1.0uF

5 3 1

STANDBY

4 9

6 11 12

C213

0.1uF

3 2 1

\

20K 1/16W

VOLUME

200

C212 100pF

R212

\

C209

1.0uF

C204 0.47uF/25V

C206 0.47uF/25V

GND

1 5 4 3 2

R201

R203 18K 1/16W

GND

C211

100pF

\

18K 1/16W

\

R210

\

20K 1/16W

R211

GND

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

GND

ViewSonic Corporation

Model

Title

Date Rev:

AUDIO

Page 71

FB001

1 2

120 OHM

FB002

1 2

120 OHM

DP2 LED

SW001 SW

SW002 SW

SW003 SW

GND

SW004 SW

SW005 SW

GND

SW006 SW

CN003

CONN

CN002

CONN

LED ORANGE LED GREEN LCD ON/OFF KEY 2 KEY 1 KEY DOWN KEY UP MUTE SPKR_R+ SPKR_L+

1 2

GND

1 2

GND

LED GREEN KEY 2 KEY UP LCD ON/OFF GND

CN006

LED ORANGE

2 4 6 8 10 12

KEY 1 KEY DOWN GND MUTE SPKR_R+SPKR_L+

GND

1 3 5 7 9

CONN

ViewSonic Corporation

Model

KEY PAD

ViewSonic Corporation Confiden tial - Do Not Copy VA712-2_ VA712b-2

Title

Date Rev:

Page 72

11. PCB Layout Diagrams

11.1 MAIN BOARD PCB TOP VIEW

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

Page 73

11.2 MAIN BOARD PCB BUTTON VIEW

11.3 KEYBOARD TOP VIEW

11.4 KEYBOARD BUTTON VIEW

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

Page 74

11.5 POWER PCB TOP VIEW

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

Page 75

11.6 POWER PCB BUTTON VIEW

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

Page 76

11.7 AUDIO PCB TOP VIEW & BUTTON VIEW

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

Page 77

* 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?

Name:

Reader’s basic dada:

Title: Company: Add: Tel:

Fax:

E-mail:

After completing this form, please return it to Vi ewSonic Q uality A ssuran ce in t he USA at facsim ile 1-909-839-7943. You may also e-mail any sugg est io n s to th e Dir ecto r, Quality Systems & Processes (marc.maupin@viewsonic.com)

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