VG720

- 1 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Manufacture Date: Aug-10-05

Service Manual

ViewSonic VG720

Model No VS10791

17” Color TFT LCD Display

- 2 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Copyright

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

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

Corporation.

Disclaimer

ViewSonic makes no representation or warranties, either expressed or implied, with

respect to the contents hereof and specifically disclaims any warranty of merchantability of

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

Optiquest 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 Date Description of changes Approval

A00 Aug-10-05 Initial Release YG.WANG

A01 Dec-28-05

Update the Handing and Placing Methods

and the Circuit Description and the

Adjustment Procedure

YG.WANG

- 3 –

ViewSonic Corporation Confidential - Do Not Copy VG720

TABLE OF CONTENTS

1. Precautions And Safety Notices 4

2. Specification 7

3. Front Panel Control And Indicators 10

4. Circuit Description 16

5. Adjustment Procedure 23

6. Troubleshooting Flow Chart 43

7. Recommended Spare Parts List 44

8. Exploded Diagram And Spare Parts List 61

9. Disassemble Process 64

10. Block Diagram 71

11. Schematic Diagram 72

12. PCB Layout Diagram 79

- 4 –

ViewSonic Corporation Confidential - Do Not Copy VG720

1. Precautions And Safety Notices

1.1 SAFETY PRECAUTIONS

This monitor is manufactured and tested on a ground principle that a user’s safety comes

first. However, improper use or installation may cause damage to the monitor as well as

the user. Carefully go over the following WARNINGS before installing and keep this guide

handy.

WARNINGS

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

on the rear end of the monitor. If you’re unsure of the power supply in your residence,

consult you local dealer or power company.

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

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

monitor should only be repaired by a qualified technician.

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

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

．Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.

．Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable

immediately and consult your service technician.

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

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

．Keep the monitor away from magnetic objects, motors, TV sets, and transformer.

．Do not place heavy objects on the monitor or power cord.

1.2 PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety visual inspections

and the protection afforded by them cannot necessarily be obtained by using replacement

components rated for higher voltages, wattage, etc. Before replacing any of these

components read the parts list in this manual carefully. The use of substitute replacement

parts which do not have the same safety characteristics as specified in the parts list may

create shock, fire ,or other hazards.

1.3 SERVICE NOTES

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

soldering.

2. When replacing a high wattage resistor(more than 1W of metal oxide film resistor) in

circuit board, keep the resistor about 5mm away from circuit board.

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

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

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

- 5 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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.”

- 6 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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.”

- 7 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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: 125 °

Contrast Ratio 600：1 (Typ.)

Brightness 270 cd/㎡(Typ.)

Response Time 8ms(Typ.)

Active Display Area 337.920(H) x 270.336(V)

Maximum Pixel Clock 135 MHz

Horizontal Frequency 30 – 82 kHz

Vertical Refresh Rate 50 – 75 Hz.

Temperature Operating: 0°C to +40°C

Storage: -20°C to +60°C

Power Management

Energy Star compliant VESA

DPMS compatible

<1 W

Power Input Voltage : 90V~264V

Consumption: 48 Watts(Max.) 43 Watts(Typ.)

- 8 –

ViewSonic Corporation Confidential - Do Not Copy VG720

2.2 INTERFACE DESCRIPTION

D-SUB 15 PIN CONNECTOR

15

610

11 15

SIGNAL LEVEL

Pin Number Pin Function

1 Red video input

2 Green video input

3 Blue video input

4 No Connection

5 Ground

6 Red video ground

7 Green video ground

8 Blue video ground

9 +5V

10 H/V sync ground

11 No connection

12 (SDA)

13 Horizontal sync (Composite sync)

14 Vertical sync

15 (SCL)

- 9 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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

- 10 –

ViewSonic Corporation Confidential - Do Not Copy VG720

3. Front Panel Function Controls And Indicators

Mute： Audio Mute button turns the sound off

Volume+/ Volume-：Decreases or increases volume

Button 1：Scrolls through menu options and adjusts the displayed

control. Also a shortcut to display the Contrast adjustment control

screen.

[▲]、[▼]：Displays the control screen for the highlighted control. Also

toggles between two controls on some screens. Also a shortcut to toggle

analog and digital connection.

Button 2：Displays the control screen for the highlighted control. Also toggles

between two controls on some screens. Also a shortcut to toggle analog and

digital connection.

Power：Standby Power On/Off

Power LED (Front Head)

Green – ON

Orange – Active Off

Dark = Soft Power Switch OFF

- 11 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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.)

- 12 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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.

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.

- 13 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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.

- 14 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Setup Menu displays the menu shown below:

Language Select allows the user to choose the language used in the menus

and control screens.

Resolution Notice 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.

- 15 –

ViewSonic Corporation Confidential - Do Not Copy VG720

SHORT CUTS FUNCTION FROM THE BUTTONS

[1] Main Menu

[2] Input toggle (Analog or Digital).

[▼] or [▲] To immediately activate Contrast menu. It should be

change to Brightness OSD by push button [2]

[▼] + [▲] recall both of Contrast and Brightness to default

[;+] or [;-] To immediately activate Volume menu for audio volume.

[;+] + [;X] Recall volume to default

[1] + [2] toggle 720x400 and 640x400 mode when input 720x400

or 640x400 mode

[1] + [;X] White Balance. (Not shown on user’s guide)

[2] + [▼]

• Power Button 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 Button 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.

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

- 16 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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.

4.2 MAIN BOARD BLOCK FUNCTION DESCRIPTION

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

convert DC circuit and so on.

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

R

G

B

H

V

SDA

SCL

OSC

Backlight and Panel

PWPC board

EPROM EPROM Keyboard

TSUM56AK

- 17 –

ViewSonic Corporation Confidential - Do Not Copy VG720

4.3 PWPC BOARD BLOCK FUNCTION DESCRIPTION

PWPC board combines to adapter and inverter, Adapter which commonly consists

of bridge rectifier and filter, start circuit, PWM control circuit, protection circuits and

convert to 12V, 5V DC voltage by input 90V-240V AC voltage that provide power supply

for each chips in the main board and inverter. Inverter is DC TO AC circuit. It changes

the 12v DC of power supply to about 600-800v AC that drives the backlight. It mostly

consists of starting circuit, PWM controller, DC changing circuit, LC surging circuit,

output circuit and protection circuit etc.

AC input EMI filter

Bridge

Rectifier

and Filter

Start Circuit

R903, R904,R905

PWM

Control IC

Over

Voltage

Protect

Rectifier

CMOS

ON/OFF

Control

PWM

Control IC

Feedback

Circuit

OSC and

Output

Circuit

DC Convert

Circuit

MOSFET

Q203

Over

Voltage

CN902

Transformer

Lamp

5V

12V

ON/OF

DIM

- 18 –

ViewSonic Corporation Confidential - Do Not Copy VG720

4.4 INTRODUCTION OF IC

STUM56AK(U401): integrate ADC, OSD, SCALER, MCU, LVDS, convert analog RGB

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

PIN Function:

AIC1084-33PM (U702): DC power convert, used to 5v convert 3.3v.

LT1117-18(U701): DC power convert, used to 5v convert 3.3v.

Pin Symbol Description

70 SDO SPI flash serial data output; Input w/5V-tolerant

71 CSZ SPI flash chip select; output

72 SCK SPI flash serial select; output

73 SDI SPI flash serial data input; output

65 DDCA_SDA/RS232_TX DDC data for analog interface; 4mA driving

strength/UART transmitter/GPIO; I/O w/5V-tolrant

66 DDCA_SDA/RS232_RX DDC data for analog interface/UART

transmitter/GPIO;Input w/5V-tolrant

36 DDCD_SDA DDC data for DVI interface; 4mA driving strength;

I/O w/5V-tolerant

37 DDCD_SCL DDC clock for DVI interface; Input w/5V-tolerant

19 RST Chip reset; High reset; Input w/5V-tolerant

22 RSTN Chip reset; Low reset; Input w/5W-toerant

11 VCTRL Regulator control; Output

63 HSYNCO Analog HSYNC input

64 VSYNCO Analog VSYNC input

62 REFP Internal ADC top de-coupling pin

61 REFM Internal ADC bottom de-coupling pin

51 REXT

External resistor 390 ohm to AVDD＿DVI

21 PWM1 PWM1; 4mA driving strength; Output

29 PWM0 PWM0; 4mA driving strength; Output

4 BYPASS For External Bypass Capacitor

33 XIN Xin; Crystal Oscillator Input

34 XOUT Xout; Crystal Oscillator Output

44、50 AVDD＿DVI DVI Power 3.3V

60 AVDD＿ADC ADC Power 3.3V

52 AVDD＿PLL PLL Power 3.3V

34 AVDD＿MPLL MPLL Power 3.3V

14、67、95、

103、115 VDDP Digital Output Power 3.3V

13、38、41、

47、96、116

VDDC Digital Core Power 1.8V

- 19 –

ViewSonic Corporation Confidential - Do Not Copy VG720

TPA3003D2 (U601): The TPA3003D2 is a audio amplifier IC,3-W efficient, driving

speakers as low as 8 , range of gain from -40dB to 36 dB. The function of

each pin and the inside circuit diagram are as follows:

Circuit Diagram

- 20 –

ViewSonic Corporation Confidential - Do Not Copy VG720

PIN Function

TERMINAL

NO. NAME I/O DESCRIPTION

AGND 9,10,26 - Analog ground for digital/analog cells in core

AVcc 33 - High-voltage analog power supply (8.5V to 14V)

AVDD 29 O 5-V Regulated output

AVDDREF 7 O 5-V Reference output-provided for connection to adjacent VREF terminal.

BSLN 13 I/O Bootstrap I/O for left channel, negative high-side FET

BSLP 24 I/O Bootstrap I/O for left channel, positive high-side FET

BSRN 48 I/O Bootstrap I/O for right channel, negative high-side FET

BSRP 37 I/O Bootstrap I/O for right channel, positive high-side FET

COSC 28 I/O I/O for charge/discharging currents onto capacitor for ramp generator triangle wave

biased at V2P5

FADE 30 I

Input for controlling volume ramp rate when cycling SD or during power-up. A logic

low on this pin places the amplifier in fade mode. A logic

high on this pin allows a quick transition to the desired volume setting.

LINN 6 I Negative differential audio input for left channel

LINP 5 I Positive differential audio input for left channel

LOUTN 16,17 O Class-D 1/2-H-bridge negative output for left channel

LOUTP 20,21 O Class-D 1/2-H-bridge positive output for left channel

MUTE 34 I A logic high on this pin disables the outputs. A low on this pin enables the outputs.

NC 31,32,35 - Not internally connected

PGNDL 18,19 - Power ground for left channel H-bridge

PGNDR 42,43 - Power ground for right channel H-bridge

PVVCCL 14,15 - Power supply for left channel H-bridge(tied to pins 22 and 23 internally), not

connected to PVCCR or AVcc

PVVCCL 22,23 - Power supply for left channel H-bridge(tied to pins 14 and 15 internally), not

connected to PVCCR or AVcc

PVCCR 38,39 - Power supply for right channel H-bridge(tied to pins 46 and 47 internally), not

connected to PVCCL or AVcc

PVCCR 46,47 - Power supply for right channel H-bridge(tied to pins 38 and 39 internally), not

connected to PVCCL or AVcc

REFGND 12 - Ground for gain control circuitry. Connect to AGND. If using a DAC to control the

volume, connect the DAC ground to this terminal.

RINP 3 I Positive differential audio input for right channel

RINN 2 I Negative differential audio input for right channel

ROSC 27 I/O Current setting resistor for ramp generator. Nominally equal to 1/8*Vcc

ROUTN 44,45 O Class-D 1/2-H-bridge negative output for right channel

ROUTP 40,41 O Class-D 1/2-H-bridge positive output for right channel

SD 1 I Shutdown signal for IC (low=shutdown, high=operational). TTL logic levels with

compliance to Vcc.

VCLAMPL 25 - Internally generated voltage supply for left channel bootstrap capacitors.

VCLAMPR 36 - Internally generated voltage supply for right channel bootstrap capacitors.

VOLUME 11 I DC voltage that sets the gain of the amplifier.

VREF 8 I Analog reference for gain control section.

V2P5 4 O 2.5-V Reference for analog cells, as well as reference for unused audio input when

using single-ended inputs.

- 21 –

ViewSonic Corporation Confidential - Do Not Copy VG720

NCP1203D60R2G (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:

No.

Name Function Pin Description

1 Adj

Adjust the skipping

peak current

This pin lets you adjust the level at which the cycle

skipping process takes place. Shorting this pin to ground,

permanently disables the skip cycle feature.

2 FB Sets the peak

current setpoint

By connecting an optocoupler to this pin, the peak current

setpoint is adjusted accordingly to the output power

demand. Skip cycle occurs when FB falls below Vpin1.

3 CS Current sense input

This pin senses the primary current and routes it to the

internal comparator via an L.E.B.

4 GND The IC ground −

5 Drv Driving pulses The driver’s output to an external MOSFET.

6 VCC Supplies the IC This pin is connected to an external bulk capacitor of

typically 22 F.

7 NC − This unconnected pin ensures adequate creepage

distance.

8 HV

Ensure a clean and

lossless startup

sequence

Connected to the high−voltage rail, this pin injects a

constant current into the VCC capacitor during the startup

sequence.

- 22 –

ViewSonic Corporation Confidential - Do Not Copy VG720

TL1451 (IC201): PWM control, voltage range for working: 3.6~35V, Has such functions

as short-voltage protection, Over-voltage protection, over-current protection and

etc. The function of each pin and the circuit diagram inside are as follows:

Pin Symbol Description Pin Symbol Description

1 CT External timing capacitor 9 VCC Power supply

2 RT External timing resistor 10 2OUT Output 2

3 1IN+ Positive input for error amplifier 1 11 2DTC Output 2 dead time/soft start setting

4 1IN- Positive input for error amplifier 2 12 2FBK Error amplifier 2 output

5 1FBK Error amplifier 1 output 13 2IN+ Positive input for error amplifier

6 1DTC

Output 1 dead time/soft start

setting 14 2IN- Positive input for error amplifier

7 1OUT Output 1 15 SCP Timing latch setting

8 GND Ground 16 REF Reference voltage output (2.5v)

- 23 –

ViewSonic Corporation Confidential - Do Not Copy VG720

5. Adjustment Procedure

5.1 ADJUSTMENT CONDITIONS AND PRECAUTIONS

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

2. Adjustments should be undertaken only on those necessary elements since most of them

have been carefully preset at the factory.

3. ESD protection is needed before adjustment.

5.2 MAIN ADJUSTMENTS

NO. FUNCTIONS DESIGNATION

1. White Balance Function Key

2. Geometry Function Key

5.3 ALIGNMENT PROCEDURES

Approximately 30 minutes should be allowed for warm up before proceeding

White-Balance adjustment.

1. Adjust of White Balance

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

A、Reference to chroma 7120 user guide

B、Use “ SC” key and “ NEXT” key to modify xyY value and use “ID” key to modify the

TEXT description Following is the procedure to do white-balance adjust

2.)Setting the color temp. You want

A、MEM.CHANNEL9 ( 9300 color):

9300 color temp. parameter is Wx = 0.283 ±0.03;Wy = 0.298 ±0.03;

Y = 250 ±20 cd/m2 ,

B、MEM.CHANNEL10 ( 6500 color):

6500 color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03;

Y = 260 ±20 cd/m2,

C、MEM.CHANNEL 11 ( 5400 color):

5400 color temp. parameter is Wx = 0.335±0.03;Wy = 0.350 ±0.03;

Y = 250 ±20 cd/m2,

D、MEM.CHANNEL10 ( SRGB color):

6500 color temp. parameter is Wx = 0.313±0.03;Wy = 0.329 ±0.03;

Y = 220 ±20 cd/m2,

- 24 –

ViewSonic Corporation Confidential - Do Not Copy VG720

3.)Into factory mode of VG720

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 ±0.03, y =0.298 ±0.03,

Y = 250 ±20 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 ±0.03, y = 0.329 ±0.03, Y =

260 ±20 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

- 25 –

ViewSonic Corporation Confidential - Do Not Copy VG720

C、Adjust 5400 color-temperature

(1) Switch the chroma-7120 to RGB-Mode (with press “MODE” button )

(2)、Switch the MEM .channel to Channel 11( with up or down arrow on chroma 7120 )

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

250 ±20 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 SRGB color-temperature

(1)、Switch the chroma-7120 to RGB-Mode (with press “MODE” button )

(2)、Switch the MEM .channel to Channel 10( with up or down arrow on chroma 7120 )

(3)、The LCD-indicator on chroma 7120 will show x = 0.313 ±0.03, y = 0.329 ±0.03, Y =

220 ±20 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

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.

- 26 –

ViewSonic Corporation Confidential - Do Not Copy VG720

5.4 Factory Defaults

Item Defaults Item Defaults

Contrast 70% Sharpness 33%

Brightness 100% OSD H. Position 50%

Volume 50% OSD V. Position 50%

Balance 50% OSD Time Out 15 Sec

Bass 50% OSD Background On

Treble 50% OSD PIVOT Off

Color Temperature 6500K Resolution Notice Enabled

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

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

- 27 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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

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

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

- 28 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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

(Figure 3)

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

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

- 29 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Black-White Pattern (Figure 9)

4.3 Function Test and Alignment Procedure

All Modes Reset

You should do “All Mode Reset” (Refer to Chapter III-3. Hot Keys for Function

Controls) first. This action will allow you to erase all end-user’s settings and restore

the factory defaults.

Auto Image Adjust

Please select and enter “Auto Image Adjust” function on Main Menu to see if it is

workable. The “Auto Image Adjust” function is aimed to offer a better screen quality

by built-in ASIC. For optimum screen quality, the user has to adjust each function

manually.

Firmware

Test Pattern: Burn In Mode (Refer to Chapter III-3. Hot Keys for Function Controls)

- Make sure the F/W is the latest version.

DDC

Test Pattern: EDID program

Make sure it can pass test program.

Fine Tune and Sharpness

Test Signal: 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.

- 30 –

ViewSonic Corporation Confidential - Do Not Copy VG720

(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

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.

-

- 31 –

ViewSonic Corporation Confidential - Do Not Copy VG720

All Modes Reset

After final QC step, we have to erase all saved changes again and restore the

factory defaults. You should do “All Mode Reset” again.

Power Off Monitor

Turn off the monitor by pressing “Power” button.

5.6 Firmware Upgrade Procedure

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

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

1 Equipment Needed

- VG720/VG920 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

- 32 –

ViewSonic Corporation Confidential - Do Not Copy VG720

2 Setup Procedure

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

2.2 Connect P1 of Fixture with VG720/VG920 Monitor by VGA Cable.

2.3 Plug Power Adapter to Fixture.

2.4 Connect Power Cord to VG720/VG920 Monitor.

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

operation being completed.

2.6 Connect PC to the additional monitor.

3 Firmware Upgrade Procedure

Step 1. Let VG720/VG920 set to be connected with AC cable and VGA cable.

Step 2.Execute the MSstar ISP tool.

P2：to LPT Cable

JP1

：

to Power Ada

p

te

r

P1：to VGA Cable

P3：to Signal Generator

- 33 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Step 3. Click “Config” button . Select the Port Type: LPT1 and the Base Addr : 0x378

on “Communication Setting” flame,and then the Speed: 47 on “E2PROM Device

Setting” flame

Step 4. Click “Connect” button. (On this step, if the connection is successful, the “Entry

ISP Mode” Dialog will be showed. If not, the error dialog will be done.)

Step 5. Click “Device” button. Select the “PMC25LV010” or “SST25VF010” viewed on

your set.

- 34 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Step 6. Click “Read” button. Select the object bincode on your corresponding directory.

Step 7. Click “Auto” button. Execute the flashing action by clicking the “Run” button.

Step 8. If the flashing F/W has been completed, “Ok” message will be showed on the

right TextBox.

- 35 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Step 9. Unplug and replug power cord of VG720/VG920 set and then check the OSD

operation and image on srceen.

Step 10. At last, do “Memory Recall.”

3.2 Setup Procedure

3.2.1 Connect P2 and P4 of Fixture with VGA ports of VG720 VG720/VG920by VGA

Cable.

3.2.2 Connect P3 of Fixture with DVI port of VG720 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 VG720/VG920 Monitor.

3.2.6 Connect PC to the additional monitor.

P3：DVI-DVI Cable

JP1： Power Adapter

P2： VGA Cable

P1：to LTP Cable

- 36 –

ViewSonic Corporation Confidential - Do Not Copy VG720

3.3 DDC Key In Procedure

Sep1.Select and execute DDc Key In program

- 37 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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

- 38 –

ViewSonic Corporation Confidential - Do Not Copy VG720

- 39 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Sep3:Key the “Enter” and write the data

- 40 –

ViewSonic Corporation Confidential - Do Not Copy VG720

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

- 41 –

ViewSonic Corporation Confidential - Do Not Copy VG720

5.7 Packing For Shipping

- 42 –

ViewSonic Corporation Confidential - Do Not Copy VG720

Packing Part List

ITEM DESCRIPITON PART NUMBER Q’TY

1 CARTON C 44G3778709 1A 1

HANDLE1 50G 600 2 1

2

HANDLE2 50G 600 3 1

3 PE BAG 45G 76 28 V3 1

4 CD MANUAL 70G1701709 5B 1

5 QSG 41G7801709 4A 1

6 EPE COVER 45G 88609 4 1

7 MONITOR T780KQ6HKGVWABP 1

8 EPE COVER 45G 88609 B 1

9 PE BAG 45G 88607 1

44G3778 1 1

10 EPS

44G3778 2 1

11 AUDIO CABLE 89G 173 56507 1

12 POWER CORD 89G402A18N LS 1

13 SIGNAL CABLE 89G 728GAA902 1

14 DVI CABLE 89G1748GAA 11 1

- 43 –

ViewSonic Corporation Confidential - Do Not Copy VG720

6. Troubleshooting Flow Chart

- 44 –

ViewSonic Corporation Confidential - Do Not Copy VG720

7. Recommended Spare Part List（VG720 BOM list——T780KQ6HKGVWABP）

Item ViewSonic

P/N Ref. P/N Description Location Universal

number# Q'ty

1 AUPC980A8P AUPC BOARD 1

2 CBPC780KQ6VWP CONVERSINON BOARD 1

3 KEPC980KB8SMTP KEY BOARD 1

4 PWPC1742QDV1P POWER BOARD 1

5 7G 1 S 16 WOODEN PALLET 0.025

6 11G 800 1 SPACER SUPPORT (RCU-3) 1

7 11G6054 1 PIN CONNECTOR 4

8 12G 434 2 RUBBER PAD 4

9 12G 437 1 THER MAL PAD 1

10 12G8000 2 FOOT PAD 2

11 15G8004 1 ROLLER PIN 4

12 15G8237 1 VESA COVER 1

13 15G8238 1 MAIN FRAME 1

14 15G8239 1 Kensington bracket 1

15 19G6014 2 塑料打包固定夹 0.2

16 20G 036 1 BASE DIE CASTING 1

17 23G3178709 4A VSC17-LCD FRONT LOGO 1

18 23G3178709 6A BIRD LOGO (E015-006) 1

19 33G4915 KR L FUNCTION BUTTON 1

20 33G4916 1 POWER LENS 0

21 33G4917 KR X ROLLER 4

22 33G4918 KR X CABLE CLIP 2

23 34G1691 KR B VESA COVER 1

24 34G1694 KD B BASE FRONT TOP 1

25 34G1695 KD B BASE FRONT BOTTOM 1

26 34G1696 KR B BASE 1

27 34G1697 KR X SWIVEL COVER 1

28 34G1698AKR B BEZEL 1

29 34G1699 KR B REAR COVER 1

30 34G1700AKD B COMESTIC TOP 1

31 34G1701 KD B COMESTIC BOTTOM 1

32 34G1702 KR B STAND FRONT 1

33 34G1703 KR B STAND REAR 1

34 37G 548 1 HINGE 1

35 40G 45760819A 机种标签 1

36 40G 459709 1B CARTON LABEL 1

37 40G 459709 2B S/N LABEL 1

38 40G 459709 4A H/V WARNING LABEL 1

- 45 –

ViewSonic Corporation Confidential - Do Not Copy VG720

39 40G 459709 5A HI-POT LABEL FOR 17-LCD 1

40 40G 581 26704 唛头纸 FOR CARTON/PALLET 0.01

41 40G 58162435A MANUAL P/N LABEL 1.05

42 40G 58170918D PALLET LABEL 0.25

43 40G 970709 5B ID 1

44 40G457B709 1A Hg LABEL 1

45 40G581B709 3A 8ms STICKER 1

46 41G7801709 4A QSG 1

47 44G3231 15547 EVA WASHER 1

48 44G3778 1 EPS(L) 1

49 44G3778 2 EPS(R) 1

50 44G6002 S 14 PAPER PLATE 0.025

51 44G6002 S 15 PAPER PLATE 0.025

52 44G9003210 CORNER PAPER 0.1

53 45G 76 28 V3 PE BAG 1

54 45G 77 3 TRANSPARENT SHEET 173

55 45G 88607 PE BAG 1

56 45G 88609 4 EPE COVER 1

57 45G 88609 B EPE COVER 1

58 50G 600 1 W 白色机用打包带 74

59 50G 600 2 HANDLE1 1

60 50G 600 3 HANDLE2 1

61 52G 1185 24 TAPE 65

62 52G 1216 A 铝箔胶带 1

63 52G 1219 A 铝箔胶带 1

64 52G 2191 D 美纹胶带 75

65 52G6019 1 YELLOW TAPE 5

66 52G6020 1 PROTECT FILM 1

67 52G6022 20 SMALL TAPE 100

68 52G6025 11907 Mylar sheet top 1

69 52G6025 11909 MYLAR BOTTOM 1

70 70G1701709 5B CD MANUAL 1

71 78G 334 5 LCD 内置无源喇叭箱（8 欧姆 1

72 85G 713 1 MAIN SHIELD 1

73 89G 173 56507 AUDIO CABLE 1

74 89G 728GAA902 SIGNAL CABLE 0

75 89G 728HAA902 SIGNAL CABLE 1

76 89G1748GAA 11 DVI CABLE 1

77 89G1748HAA 11 DVI SIGNAL CABLE 0

78 89G1748LAA 11 DVI CABLE 0

- 46 –

ViewSonic Corporation Confidential - Do Not Copy VG720

79 89G402A18N IS POWER CABLE 0

80 89G402A18N LS POWER CORD 1

81 95G8014 16921 WIRE HARNESS 16P-11P 3 1

82 95G8018 30 95 HARNESS 30P-24P 130MM 1

83 M1G 130 6120 SCREW 4

84 M1G 130 6120 SCREW 2

85 M1G 140 8120 SCREW M4X8 4

86 M1G 140 10120 SCREW M4X10 5

87 M1G 330 4128 SCREW 2

88 M1G1030 6225 SCREW M3X6 1

89 M1G1140 6128 SCREW 1

90 M1G1730 6128 SCREW 3

91 M1G1730 6128 SCREW 4

92 M1G1730 6128 SCREW 2

93 M1G2940 10225 M4*10 4

94 Q1G 130 6 47 SCREW 3

95 Q1G 130 8120 SCREW 3

96 Q1G 130 12120 SCREW 1

97 Q1G 330 6120 SCREW M3X6MM 4

98 Q1G 330 6120 SCREW M3X6MM 2

99 Q1G 330 8120 SCREW 2

100 Q1G1030 10120 M3*10 4

101 Q1G1030 12120 M3*12 2

102 750GLQ70L07 61 LCD PANEL QD17EL07 Rev1 1

103 750GLQ70L07 62 QD17EL07 17" LCD PANEL 0

104 C 44G3778709 1A CARTON 1

105 AUPC980A8P AUPC BOARD

106 AUPC980A8SMTP AUPC BOARD SMT 1

107 33G3802 4H WAFER 4P RIGHT ANGLE CN603 1

108 33G802414C H WAFER CN602 1

109 51G6002 1 导热胶 0.2

110 67G215B471 3H LOW ESR CAP 470UF 16V 8 C620 1

111 67G305V100 7N GP 10UF50V KME50VB10-M-TP5 C601 1

112 67G305V100 7N GP 10UF50V KME50VB10-M-TP5 C605 1

113 67G305V100 7N GP 10UF50V KME50VB10-M-TP5 C617 1

114 67G305V100 7N GP 10UF50V KME50VB10-M-TP5 C625 1

115 88G 30214K PHONE JACK 5PIN CN601 1

116 90G6119 1 HEATSINK 1

117 AUPC980A8SMTP AUPC BOARD SMT

118 56G 616 6 ID TPA3003D2PF BRG4 TQF U601 1

- 47 –

ViewSonic Corporation Confidential - Do Not Copy VG720

119 61L0603000 CHIPR 0OHM +-5% 1/10W R602 1

120 61L0603102 CHIPR 1KOHM +-5% 1/10W R608 1

121 61L0603103 CHIPR 10KOHM+-5% 1/10W R601 1

122 61L0603103 CHIPR 10KOHM+-5% 1/10W R609 1

123 61L0603103 CHIPR 10KOHM+-5% 1/10W R610 1

124 61L0603124 CHIP 120KOHM 1/10W R604 1

125 61L0603124 CHIP 120KOHM 1/10W R607 1

126 61L0603393 39K OHM 1/10W R611 1

127 61L0603393 39K OHM 1/10W R612 1

128 65G0603101 31 CHIP 100P 50V NPO C612 1

129 65G0603101 31 CHIP 100P 50V NPO C615 1

130 65G0603102 32 CHIP 1000PF 50 X7R C602 1

131 65G0603102 32 CHIP 1000PF 50 X7R C603 1

132 65G0603102 32 CHIP 1000PF 50 X7R C604 1

133 65G0603102 32 CHIP 1000PF 50 X7R C630 1

134 65G0603102 32 CHIP 1000PF 50 X7R C631 1

135 65G0603102 32 CHIP 1000PF 50 X7R C632 1

136 65G0603103 32 0.01UF 50V X7R C607 1

137 65G0603103 32 0.01UF 50V X7R C608 1

138 65G0603103 32 0.01UF 50V X7R C626 1

139 65G0603103 32 0.01UF 50V X7R C629 1

140 65G0603104 12 MLCC C606 1

141 65G0603104 12 MLCC C609 1

142 65G0603104 12 MLCC C618 1

143 65G0603104 12 MLCC C621 1

144 65G0603104 12 MLCC C627 1

145 65G0603104 12 MLCC C628 1

146 65G0603105 12 CHIP CAP 1UF. C610 1

147 65G0603105 12 CHIP CAP 1UF. C611 1

148 65G0603105 12 CHIP CAP 1UF. C613 1

149 65G0603105 12 CHIP CAP 1UF. C614 1

150 65G0603105 12 CHIP CAP 1UF. C616 1

151 65G0603105 12 CHIP CAP 1UF. C619 1

152 65G0603105 12 CHIP CAP 1UF. C623 1

153 65G0603105 12 CHIP CAP 1UF. C624 1

154 65G0603221 32 220PF/50V X7R C622 1

155 71G 56G301 EA CHIP BEAD FB602 1

156 71G 56G301 EA CHIP BEAD FB604 1

157 71G 56G301 EA CHIP BEAD FB610 1

158 71G 56G301 EA CHIP BEAD FB612 1

- 48 –

ViewSonic Corporation Confidential - Do Not Copy VG720

159 71G 57G301 EA CHIP BEAD 600 OHM 1206 FB605 1

160 71G 57G301 EA CHIP BEAD 600 OHM 1206 FB606 1

161 71G 57G601 贴片磁珠 FB601 1

162 71G 57G601 贴片磁珠 FB607 1

163 71G 57G601 贴片磁珠 FB608 1

164 71G 57G601 贴片磁珠 FB609 1

165 715G1566 1 AUDIO 1

166 CBPC780KQ6VWP CONVERSINON BOARD

167 AIC780KQ6VWP MAIN BOARD 1

168 33G801714H H PIN2*7 $ CN404 1

169 33G801724A H PIN 24P 2.0MM RIGHT ANG $ CN101 1

170 33G8027 12 WAFER 2*6P 2.0MM R/A $ CN701 1

171 33G8027 16 WAFER 16PIN 2.0MM DIP $ CN403 1

172 40G 45762412B CBPC LABEL $ 1.03

173 51G6002 1 导热胶 0.2

174 67G215L101 4N LOW ESR EC 100UF 25V NC C707 1

175 67G215L101 4N LOW ESR EC 100UF 25V NC C710 1

176 67G215L101 4N LOW ESR EC 100UF 25V NC C712 1

177 67G309V100 3 Electrolytic CAP C408 1

178 67G309V100 3 Electrolytic CAP C717 1

179 67G309V109 3 1UF +-20% 16V C705 1

180 67G309V479 3 4.7UF +-20% 16V C403 1

181 67G309V479 3 4.7UF +-20% 16V C702 1

182 88G 35315F H D-SUB 15PIN CN405 1

183 88G 35315F HJ D-SUB 15PIN CN405 0

184 88G 35424F H DVID CONN 24P FEMALE 90 CN406 1

185 90G6250 1 GP 散热片 1

186 93G 22 53 CRYSTAL 14.31818MHZ HC- X401 1

187 AIC780KQ6VWP MAIN BOARD

188 56G 562108 TSUM56AK-LF PQFP-100 U401 1

189 56G 563 7 AIC1084-33PM TO-263 U702 1

190 56G 643 6 IC MICROPROCESSOR MAX81 U406 1

191 56G1133 34 IC M24C02-WMN6TP U404 1

192 56G1133 34 IC M24C02-WMN6TP U405 1

193 56G1133 63QA1 PM25LV010-25SCE U402 1

194 56G1133 74QA1 SST25VF010A-33-4C-SAE S U402 0

195 56G113356A 24LC16B/SNG SOIC-8PIN U403 1

196 57G 417 4 PMBS3904/PLILIPS Q402 1

197 57G 417 4 PMBS3904/PLILIPS Q404 1

198 57G 417 4 PMBS3904/PLILIPS Q701 1

- 49 –

ViewSonic Corporation Confidential - Do Not Copy VG720

199 57G 417 4 PMBS3904/PLILIPS Q703 1

200 57G 417 4 PMBS3904/PLILIPS Q706 1

201 57G 417 6 PMBS3906 PNP Q401 1

202 57G 417 6 PMBS3906 PNP Q403 1

203 57G 417 17 T PZT2907A SOT-223 Q702 1

204 57G 763 1 AO3401L Q704 1

205 61L0603000 CHIPR 0OHM +-5% 1/10W FB410 1

206 61L0603000 CHIPR 0OHM +-5% 1/10W FB411 1

207 61L0603000 CHIPR 0OHM +-5% 1/10W FB412 1

208 61L0603000 CHIPR 0OHM +-5% 1/10W R419 1

209 61L0603000 CHIPR 0OHM +-5% 1/10W R421 1

210 61L0603000 CHIPR 0OHM +-5% 1/10W R431 1

211 61L0603000 CHIPR 0OHM +-5% 1/10W R432 1

212 61L0603000 CHIPR 0OHM +-5% 1/10W R720 1

213 61L0603000 CHIPR 0OHM +-5% 1/10W R721 1

214 61L0603100 CHIPR 10 OHM 1/10W R462 1

215 61L0603100 CHIPR 10 OHM 1/10W R463 1

216 61L0603100 CHIPR 10 OHM 1/10W R464 1

217 61L0603100 CHIPR 10 OHM 1/10W R465 1

218 61L0603100 CHIPR 10 OHM 1/10W R466 1

219 61L0603100 CHIPR 10 OHM 1/10W R467 1

220 61L0603100 CHIPR 10 OHM 1/10W R468 1

221 61L0603100 CHIPR 10 OHM 1/10W R469 1

222 61L0603100 1F CHIP 1KOHM 1/10W 1% R478 1

223 61L0603100 1F CHIP 1KOHM 1/10W 1% R479 1

224 61L0603101 CHIPR 100OHM +-5% 1/10W R411 1

225 61L0603101 CHIPR 100OHM +-5% 1/10W R418 1

226 61L0603101 CHIPR 100OHM +-5% 1/10W R420 1

227 61L0603101 CHIPR 100OHM +-5% 1/10W R427 1

228 61L0603101 CHIPR 100OHM +-5% 1/10W R428 1

229 61L0603101 CHIPR 100OHM +-5% 1/10W R429 1

230 61L0603101 CHIPR 100OHM +-5% 1/10W R441 1

231 61L0603101 CHIPR 100OHM +-5% 1/10W R442 1

232 61L0603101 CHIPR 100OHM +-5% 1/10W R443 1

233 61L0603101 CHIPR 100OHM +-5% 1/10W R445 1

234 61L0603101 CHIPR 100OHM +-5% 1/10W R453 1

235 61L0603101 CHIPR 100OHM +-5% 1/10W R454 1

236 61L0603101 CHIPR 100OHM +-5% 1/10W R455 1

237 61L0603101 CHIPR 100OHM +-5% 1/10W R456 1

238 61L0603101 CHIPR 100OHM +-5% 1/10W R458 1

- 50 –

ViewSonic Corporation Confidential - Do Not Copy VG720

239 61L0603101 CHIPR 100OHM +-5% 1/10W R704 1

240 61L0603102 CHIPR 1KOHM +-5% 1/10W R430 1

241 61L0603102 CHIPR 1KOHM +-5% 1/10W R446 1

242 61L0603102 CHIPR 1KOHM +-5% 1/10W R447 1

243 61L0603102 CHIPR 1KOHM +-5% 1/10W R470 1

244 61L0603102 CHIPR 1KOHM +-5% 1/10W R476 1

245 61L0603102 CHIPR 1KOHM +-5% 1/10W R477 1

246 61L0603102 CHIPR 1KOHM +-5% 1/10W R701 1

247 61L0603103 CHIPR 10KOHM+-5% 1/10W R406 1

248 61L0603103 CHIPR 10KOHM+-5% 1/10W R408 1

249 61L0603103 CHIPR 10KOHM+-5% 1/10W R412 1

250 61L0603103 CHIPR 10KOHM+-5% 1/10W R413 1

251 61L0603103 CHIPR 10KOHM+-5% 1/10W R415 1

252 61L0603103 CHIPR 10KOHM+-5% 1/10W R416 1

253 61L0603103 CHIPR 10KOHM+-5% 1/10W R424 1

254 61L0603103 CHIPR 10KOHM+-5% 1/10W R425 1

255 61L0603103 CHIPR 10KOHM+-5% 1/10W R426 1

256 61L0603103 CHIPR 10KOHM+-5% 1/10W R450 1

257 61L0603103 CHIPR 10KOHM+-5% 1/10W R451 1

258 61L0603103 CHIPR 10KOHM+-5% 1/10W R452 1

259 61L0603103 CHIPR 10KOHM+-5% 1/10W R457 1

260 61L0603103 CHIPR 10KOHM+-5% 1/10W R459 1

261 61L0603103 CHIPR 10KOHM+-5% 1/10W R460 1

262 61L0603103 CHIPR 10KOHM+-5% 1/10W R461 1

263 61L0603103 CHIPR 10KOHM+-5% 1/10W R471 1

264 61L0603103 CHIPR 10KOHM+-5% 1/10W R484 1

265 61L0603103 CHIPR 10KOHM+-5% 1/10W R485 1

266 61L0603103 CHIPR 10KOHM+-5% 1/10W R487 1

267 61L0603103 CHIPR 10KOHM+-5% 1/10W R708 1

268 61L0603103 CHIPR 10KOHM+-5% 1/10W R711 1

269 61L0603103 CHIPR 10KOHM+-5% 1/10W R714 1

270 61L0603103 CHIPR 10KOHM+-5% 1/10W R717 1

271 61L0603103 CHIPR 10KOHM+-5% 1/10W R727 1

272 61L0603121 CHIPR 120 OHM 1/10W R409 1

273 61L0603121 CHIPR 120 OHM 1/10W R414 1

274 61L0603150 1F CHIP 1.5KOHM 1/16W 1% R480 1

275 61L0603202 CHIPR 2KOHM+-5%1/10W R703 1

276 61L0603203 CHIPR 20KOHM +-5% 1/10W R417 1

277 61L0603222 CHIPR 2.2KOHM+-5%1/10W R448 1

278 61L0603222 CHIPR 2.2KOHM+-5%1/10W R449 1

- 51 –

ViewSonic Corporation Confidential - Do Not Copy VG720

279 61L0603223 CHIPR 22K OHM +-5% 1/10 R405 1

280 61L0603390 0F 390OHM +-1% R403 1

281 61L0603392 CHIP 3.9K OHM 1/10W R474 1

282 61L0603392 CHIP 3.9K OHM 1/10W R475 1

283 61L0603471 CHIPR 470OHM+-5%1/10W R437 1

284 61L0603472 CHIP 4.7KOHM +-5% 1/10 R422 1

285 61L0603472 CHIP 4.7KOHM +-5% 1/10 R423 1

286 61L0603472 CHIP 4.7KOHM +-5% 1/10 R705 1

287 61L0603472 CHIP 4.7KOHM +-5% 1/10 R707 1

288 61L0603472 CHIP 4.7KOHM +-5% 1/10 R712 1

289 61L0603472 CHIP 4.7KOHM +-5% 1/10 R725 1

290 61L0603510 CHIP 51OHM 5% 1/10W R702 1

291 61L0603513 CHIP 51K OHM R723 1

292 61L0603560 CHIPR 56 OHM +-5% 1/10W R434 1

293 61L0603560 CHIPR 56 OHM +-5% 1/10W R435 1

294 61L0603560 CHIPR 56 OHM +-5% 1/10W R436 1

295 61L0603750 CHIPR 75OHM+-5%1/10W R438 1

296 61L0603750 CHIPR 75OHM+-5%1/10W R439 1

297 61L0603750 CHIPR 75OHM+-5%1/10W R440 1

298 65G0603104 32 CHIP 0.1UF 50V X7R C401 1

299 65G0603104 32 CHIP 0.1UF 50V X7R C404 1

300 65G0603104 32 CHIP 0.1UF 50V X7R C405 1

301 65G0603104 32 CHIP 0.1UF 50V X7R C406 1

302 65G0603104 32 CHIP 0.1UF 50V X7R C407 1

303 65G0603104 32 CHIP 0.1UF 50V X7R C409 1

304 65G0603104 32 CHIP 0.1UF 50V X7R C410 1

305 65G0603104 32 CHIP 0.1UF 50V X7R C411 1

306 65G0603104 32 CHIP 0.1UF 50V X7R C412 1

307 65G0603104 32 CHIP 0.1UF 50V X7R C413 1

308 65G0603104 32 CHIP 0.1UF 50V X7R C414 1

309 65G0603104 32 CHIP 0.1UF 50V X7R C415 1

310 65G0603104 32 CHIP 0.1UF 50V X7R C416 1

311 65G0603104 32 CHIP 0.1UF 50V X7R C417 1

312 65G0603104 32 CHIP 0.1UF 50V X7R C419 1

313 65G0603104 32 CHIP 0.1UF 50V X7R C420 1

314 65G0603104 32 CHIP 0.1UF 50V X7R C422 1

315 65G0603104 32 CHIP 0.1UF 50V X7R C424 1

316 65G0603104 32 CHIP 0.1UF 50V X7R C425 1

317 65G0603104 32 CHIP 0.1UF 50V X7R C426 1

318 65G0603104 32 CHIP 0.1UF 50V X7R C427 1

- 52 –

ViewSonic Corporation Confidential - Do Not Copy VG720

319 65G0603104 32 CHIP 0.1UF 50V X7R C428 1

320 65G0603104 32 CHIP 0.1UF 50V X7R C429 1

321 65G0603104 32 CHIP 0.1UF 50V X7R C430 1

322 65G0603104 32 CHIP 0.1UF 50V X7R C439 1

323 65G0603104 32 CHIP 0.1UF 50V X7R C440 1

324 65G0603104 32 CHIP 0.1UF 50V X7R C441 1

325 65G0603104 32 CHIP 0.1UF 50V X7R C444 1

326 65G0603104 32 CHIP 0.1UF 50V X7R C445 1

327 65G0603104 32 CHIP 0.1UF 50V X7R C446 1

328 65G0603104 32 CHIP 0.1UF 50V X7R C447 1

329 65G0603104 32 CHIP 0.1UF 50V X7R C448 1

330 65G0603104 32 CHIP 0.1UF 50V X7R C449 1

331 65G0603104 32 CHIP 0.1UF 50V X7R C450 1

332 65G0603104 32 CHIP 0.1UF 50V X7R C451 1

333 65G0603104 32 CHIP 0.1UF 50V X7R C452 1

334 65G0603104 32 CHIP 0.1UF 50V X7R C453 1

335 65G0603104 32 CHIP 0.1UF 50V X7R C454 1

336 65G0603104 32 CHIP 0.1UF 50V X7R C706 1

337 65G0603104 32 CHIP 0.1UF 50V X7R C709 1

338 65G0603104 32 CHIP 0.1UF 50V X7R C711 1

339 65G0603104 32 CHIP 0.1UF 50V X7R C713 1

340 65G0603104 32 CHIP 0.1UF 50V X7R C714 1

341 65G0603104 32 CHIP 0.1UF 50V X7R C715 1

342 65G0603104 32 CHIP 0.1UF 50V X7R C718 1

343 65G0603220 32 Chip Cap 22PF C421 1

344 65G0603220 32 Chip Cap 22PF C423 1

345 65G0603221 32 220PF/50V X7R C443 1

346 65G0603330 32 CHIP 33PF 50V NPO C442 1

347 65G0603473 32 CHIP 47NF 50V X7R C432 1

348 65G0603473 32 CHIP 47NF 50V X7R C433 1

349 65G0603473 32 CHIP 47NF 50V X7R C434 1

350 65G0603473 32 CHIP 47NF 50V X7R C435 1

351 65G0603473 32 CHIP 47NF 50V X7R C436 1

352 65G0603473 32 CHIP 47NF 50V X7R C437 1

353 65G0603473 32 CHIP 47NF 50V X7R C438 1

354 65G0805105 37 CHIP 1UF 50V Y5V C708 1

355 71G 56Z601 2.0X1.2 100M=600OHM FB401 1

356 71G 56Z601 2.0X1.2 100M=600OHM FB402 1

357 71G 56Z601 2.0X1.2 100M=600OHM FB403 1

358 71G 56Z601 2.0X1.2 100M=600OHM FB404 1

- 53 –

ViewSonic Corporation Confidential - Do Not Copy VG720

359 71G 56Z601 2.0X1.2 100M=600OHM FB405 1

360 71G 56Z601 2.0X1.2 100M=600OHM FB406 1

361 71G 56Z601 2.0X1.2 100M=600OHM FB407 1

362 71G 56Z601 2.0X1.2 100M=600OHM FB408 1

363 71G 56Z601 M CHIP BEAD 0805 600OHM FB401 0

364 71G 56Z601 M CHIP BEAD 0805 600OHM FB402 0

365 71G 56Z601 M CHIP BEAD 0805 600OHM FB403 0

366 71G 56Z601 M CHIP BEAD 0805 600OHM FB404 0

367 71G 56Z601 M CHIP BEAD 0805 600OHM FB405 0

368 71G 56Z601 M CHIP BEAD 0805 600OHM FB406 0

369 71G 56Z601 M CHIP BEAD 0805 600OHM FB407 0

370 71G 56Z601 M CHIP BEAD 0805 600OHM FB408 0

371 71G 59B121 贴片磁珠 FB409 1

372 93G 39147SEM ZMM5V6 D414 1

373 93G 39147SEM ZMM5V6 D415 1

374 93G 39147SEM ZMM5V6 D416 1

375 93G 39147SEM ZMM5V6 D426 1

376 93G 39149 ZENER MLL5232B BY FULL D406 1

377 93G 39149 ZENER MLL5232B BY FULL D408 1

378 93G 39149 ZENER MLL5232B BY FULL D409 1

379 93G 39149 ZENER MLL5232B BY FULL D410 1

380 93G 39149 ZENER MLL5232B BY FULL D411 1

381 93G 39149 ZENER MLL5232B BY FULL D412 1

382 93G 64 42 P BAV70 DIODE D407 1

383 93G 64 42 P BAV70 DIODE D413 1

384 93G 6432P LL4148 MINI-MELF/LL-34 D701 1

385 93G 6432P LL4148 MINI-MELF/LL-34 D702 1

386 93G 6433P BAV99 SOT-23 D403 1

387 93G 6433P BAV99 SOT-23 D404 1

388 93G 6433P BAV99 SOT-23 D405 1

389 93G 6433P BAV99 SOT-23 D417 1

390 93G 6433P BAV99 SOT-23 D418 1

391 93G 6433P BAV99 SOT-23 D419 1

392 93G 6433P BAV99 SOT-23 D420 1

393 93G 6433P BAV99 SOT-23 D421 1

394 93G 6433P BAV99 SOT-23 D422 1

395 93G 6433P BAV99 SOT-23 D423 1

396 93G 6433P BAV99 SOT-23 D424 1

397 93G 39S 45 T RLZ36B ZENER DIODE D401 1

398 93G 39S 45 T RLZ36B ZENER DIODE D402 1

- 54 –

ViewSonic Corporation Confidential - Do Not Copy VG720

399 93G 39S 45 T RLZ36B ZENER DIODE D425 1

400 93G1004 4 SCHOTTKY DIODE 1A 40V S D704 1

401 715G1558 1 2 MAIN BOARD 1

402 KEPC980KB8SMTP KEY BOARD

403 33G803411C WAFER 1.0MM SMT 11P $ CN001 1

404 77G 604 2 TO TACT SWITCH SW001 1

405 77G 604 2 TO TACT SWITCH SW002 1

406 77G 604 2 TO TACT SWITCH SW003 1

407 77G 604 2 TO TACT SWITCH SW004 1

408 77G 604 2 TO TACT SWITCH SW005 1

409 77G 604 2 TO TACT SWITCH SW006 1

410 77G 604 2 TO TACT SWITCH SW007 1

411 77G 604 2 TO TACT SWITCH SW008 1

412 81G 14501 KT KTL-HKBGE33B-TRB LED001 1

413 715G1602 1 KEPC 1

414 PWPC1742QDV1P POWER BOARD

415 PW1742QDV1SMTP MAIN BOARD FOR SMT 1

416 33G8021 2D U CON.2PR/A $ CN201 1

417 33G8021 2D U CON.2PR/A $ CN202 1

418 33G8021 2D U CON.2PR/A $ CN203 1

419 33G8021 2D U CON.2PR/A $ CN204 1

420 33G8021 2D AC WAFER $ CN201 0

421 33G8021 2D AC WAFER $ CN202 0

422 33G8021 2D AC WAFER $ CN203 0

423 33G8021 2D AC WAFER $ CN204 0

424 33G8029 3A WAFER 3.96MM $ CN901 1

425 40G 45762412B CBPC LABEL $ 1

426 51G 6 4503 RTV 胶 2

427 56G 139 3 PC123FY2 BY SHARP IC902 0

428 56G 139 3A PC123Y22FZOF IC902 1

429 57G 417 11 KTC5103L-Y-U/P IPAK Q206 1

430 57G 417 11 KTC5103L-Y-U/P IPAK Q207 1

431 57G 761 7 TRANSISTOR KTD1691/P Q206 0

432 57G 761 7 TRANSISTOR KTD1691/P Q207 0

433 61G 58080 WT NTCR NR901 1

434 61G152M398 64 RES. R918 1

435 63G 10747410S 0.47UF +-10% 250VAC C903 1

436 63G210J3342B2 0.33uF 250V PMS TAIYANG C221 0

437 63G211J334 AB 0.33UF 5% 160V C221 1

438 65G 2K152 5A 1500PE 10% Y5P 2KV C905 1

- 55 –

ViewSonic Corporation Confidential - Do Not Copy VG720

439 65G 3J1206EM 12PF 5% SL 3KV MURATA C211 1

440 65G 3J1206EM 12PF 5% SL 3KV MURATA C212 1

441 65G 3J1206EM 12PF 5% SL 3KV MURATA C213 1

442 65G 3J1206EM 12PF 5% SL 3KV MURATA C214 1

443 65G 3J1206ET 12PF 5% SL 3KV TDK C211 0

444 65G 3J1206ET 12PF 5% SL 3KV TDK C212 0

445 65G 3J1206ET 12PF 5% SL 3KV TDK C213 0

446 65G 3J1206ET 12PF 5% SL 3KV TDK C214 0

447 65G305M1022BJ 1000PF Y2 400V 20% BY J C901 0

448 65G305M1022BJ 1000PF Y2 400V 20% BY J C902 0

449 65G305M1022EM 1000pF Y2 250V 20% BY M C901 1

450 65G305M1022EM 1000pF Y2 250V 20% BY M C902 1

451 65G306M1022BM

GP Y1.CAP.001UF 250VAC MUR C935 1

452 65G306M1022BP 1000PF 400VAC/250VAC Y1 C935 0

453 65G306M2222BM

GP 2200PF +-20% 250V AC C900 1

454 65G306M2222BP 2200PF Y1 400 20% BY UK C900 0

455 67G215H102 3N KY16VB1000M-1 10*20 C924 0

456 67G215L101 4N LOW ESR EC 100UF 25V NC C906 1

457 67G215L102 3N KY16VB1000M-1 10*20 C924 0

458 67G215L102 3R LOW ESR 1000UF +-20% 16 C924 1

459 67G215L102 4N LOW ESR 1000UF 25V C923 0

460 67G215L102 4N LOW ESR 1000UF 25V C931 0

461 67G215L102 4R 1000UF/25V C923 1

462 67G215L102 4R 1000UF/25V C931 1

463 67G215L470 4N 47UF/25V C909 1

464 67G215L471 4N 470UF25V KY25VB470-M-L C203 0

465 67G215L471 4N 470UF25V KY25VB470-M-L C925 0

466 67G215L471 4R 470UF/25V C203 1

467 67G215L471 4R 470UF/25V C925 1

468 67G215P102 3K LOW ESR EC 1000UF 16V C924 0

469 67G215P102 4K LOW ESR EC 1000UF 25V C923 0

470 67G215P102 4K LOW ESR EC 1000UF 25V C931 0

471 67G215P471 3K LOW ESR EC 470UF 16V C926 0

472 67G215P471 4K LOW ESR EC 470UF 25V C203 0

473 67G215P471 4K LOW ESR EC 470UF 25V C925 0

474 67G215S10115K LOW ESR EC 100uF 450V C904 1

475 67G215S10115N 1000/450PAG450VB100M-L C904 0

476 67G215V102 3N GP KY10VB1000M-L10*16 C924 0

- 56 –

ViewSonic Corporation Confidential - Do Not Copy VG720

477 67G215V102 3R GP LOW E.S.R 100UF +-20% 1 C924 0

478 67G215Y1014KT LOW ESR EC 100UF 25V C906 0

479 67G215Y4704KT LOW ESR EC 47UF 25V C909 0

480 67G215Y471 3N 470UF 16V KY16VB470M-L C926 0

481 67G215Y4713NV KY16VB470M-CC3 8*15MM C926 0

482 67G215Y4713RV LOW E.S.R 470UF +-20% 1 C926 1

483 73G 174 64 L LINE FILTER LF-004057-1 L902 1

484 73G 174 64 LS LINE FILTER L902 0

485 73G 174 64 YS LINE FILTER L902 0

486 73G 253 91 H 阻流圈 L903 0

487 73G 253 91 H 阻流圈 L904 0

488 73G 253 91 L CHOKE BY LI TA L903 1

489 73G 253 91 L CHOKE BY LI TA L904 1

490 73G 253 91 LS CHOKE COIL L903 0

491 73G 253 91 LS CHOKE COIL L904 0

492 73G 253166 L CHOKE L201 0

493 73G 253166 LS CHOCK COIL L201 0

494 73G 253166 YS CHOKE L201 1

495 73L 174 50 LH LINE FILTER L901 1

496 73L 174 50LSH LINE FILTER L901 0

497 80GL17T 28 DN TRANSFORMER PT201 0

498 80GL17T 28 DN TRANSFORMER PT202 0

499 80GL17T 28 YS X'FMR YAO SHENG PT201 1

500 80GL17T 28 YS X'FMR YAO SHENG PT202 1

501 80GL17T 29 L X'FMR PT-004046 T901 1

502 80GL17T 29 V XFMR T901 0

503 80GL17T 29 LS POWER TRANS T901 0

504 93G 50460 13 KBP206G 2A 600V DB901 1

505 93G 50460502 BRIDGE KBP206G 2A 800V DB901 0

506 93G1100 1052T BA159GPT DO-41 DIODE 1A D901 1

507 95G8014 12 35 WIRE HARRNESS CN902 1

508 705G 780 5720P D921/D922 ASS'Y 1

509 705G 780 5721P Q901 ASS'Y 1

510 705G 780 5722P R908 ASS'Y 1

511 705G 780 5725P CN901 ASS'Y 1

512 705G 780 5733P Q203 ASS'Y 1

513 PW1742QDV1SMTP MAIN BOARD FOR SMT

514 PW1742QDV1AIP PWPC BOARD FOR AI 1

515 56G 379 54 NCP1203D60R2G SOIC-8 IC IC901 1

516 56G 608 1 TL1451ACD SOIC-16 IC201 1

- 57 –

ViewSonic Corporation Confidential - Do Not Copy VG720

517 57G 417 4 PMBS3904/PLILIPS Q204 1

518 57G 417 6 PMBS3906 PNP Q205 1

519 57G 417 12 T 2N3904S-RTK/PS SOT-23 Q204 0

520 57G 417 13 T 2N3906S-RTK/PS SOT-23 Q205 0

521 57G 760 4 DTA144WKA Q202 1

522 57G 760 5 DTC144WKA Q201 1

523 57G 760 4C RT1P44HC-T112-1 SC-59BY Q202 0

524 57G 760 5C RT1N44HC-T112-1 SC-59BY Q201 0

525 61L0805000 Chip Resistors 0OHM R208 1

526 61L0805000 Chip Resistors 0OHM R209 1

527 61L0805101 CHIPR 100OHM+-5%1/8W R912 1

528 61L0805102 CHIPR 1K OHM +-5% 1/8W R924 1

529 61L0805102 CHIPR 1K OHM +-5% 1/8W R931 1

530 61L0805102 CHIPR 1K OHM +-5% 1/8W R932 1

531 61L0805103 CHIPR 10KOHM+-5%1/8W R207 1

532 61L0805103 CHIPR 10KOHM+-5%1/8W R917 1

533 61L0805123 CHIP 12K OHM 1/8W R206 1

534 61L0805123 CHIP 12K OHM 1/8W R214 1

535 61L0805123 CHIP 12K OHM 1/8W R231 1

536 61L0805163 CHIP 16KOHM 1/8W R205 1

537 61L0805203 CHIPR 20KOHM +-5% 1/8W R919 1

538 61L0805220 CHIP 22OHM 5% 1/8W R915 1

539 61L0805221 CHIPR 220 OHM +-5% 1/8W R202 1

540 61L0805221 CHIPR 220 OHM +-5% 1/8W R916 1

541 61L0805222 CHIPR 2.2K OHM +-5% 1/8 R910 1

542 61L0805240 1F CHIPR 2.4KOHM +-1% 1/8W R201 1

543 61L0805240 1F CHIPR 2.4KOHM +-1% 1/8W R203 1

544 61L0805240 1F CHIPR 2.4KOHM +-1% 1/8W R933 1

545 61L0805330 2F CHIP 33KOHM 1/8W/1% R929 1

546 61L0805360 1F CHIP 3.6KOHM 1/8W 1% R930 1

547 61L0805362 CHIP 3.6KOHM 1/8W R911 1

548 61L0805471 CHIPR 470 OHM +-5% 1/8W R204 1

549 61L0805471 CHIPR 470 OHM +-5% 1/8W R230 1

550 61L0805472 CHIPR 4.7K OHM +-5% 1/8 R213 1

551 61L0805472 CHIPR 4.7K OHM +-5% 1/8 R914 1

552 61L0805473 CHIPR 47K OHM +-5% 1/8W R210 1

553 61L0805510 2F CHIP 51KOHM 1/8W 1% R232 1

554 61L0805623 CHIPR 62K OHM +-5% 1/8W R212 1

555 61L0805680 CHIP 68OHM 1/8W R909 1

556 61L0805681 CHIP 680OHM 1/8W R229 1

- 58 –

ViewSonic Corporation Confidential - Do Not Copy VG720

557 61L0805753 75K 1/8W R913 1

558 61L1206000 CHIPR 0OHM+-5% 1/4W F902 1

559 61L1206000 CHIPR 0OHM+-5% 1/4W R925 1

560 61L1206332 CHIP 3.3KOHM 5% 1/4W R903 1

561 61L1206332 CHIP 3.3KOHM 5% 1/4W R904 1

562 61L1206332 CHIP 3.3KOHM 5% 1/4W R905 1

563 61L1206334 330K 1/4W R900 1

564 61L1206334 330K 1/4W R901 1

565 61L1206334 330K 1/4W R902 1

566 65G0805102 32 CHIP 1000PF 50V X7R 080 C912 1

567 65G0805104 22 CHIP 0.1UF 25VX7R 0805 C201 1

568 65G0805104 22 CHIP 0.1UF 25VX7R 0805 C202 1

569 65G0805104 22 CHIP 0.1UF 25VX7R 0805 C204 1

570 65G0805104 22 CHIP 0.1UF 25VX7R 0805 C208 1

571 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C907 1

572 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C927 1

573 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C928 1

574 65G0805104 32 CHIP 0.1UF 50V X7R 0805 C929 1

575 65G0805105 22 CHIP 1UF 25V X7R 0805 C205 1

576 65G0805105 22 CHIP 1UF 25V X7R 0805 C210 1

577 65G0805105 22 CHIP 1UF 25V X7R 0805 C223 1

578 65G0805331 31 330PF 50V NPO C207 1

579 65G0805471 31 CHIP 470PF 50V NPO C911 1

580 65G0805474 22 CHIP 0.47UF 25V Y5V 080 C222 1

581 65G0805474 22 CHIP 0.47UF 25V Y5V 080 C932 1

582 93G 60264 B340A DO-214AC D201 0

583 93G 6432S 1N4148W DIODE D210 1

584 93G 6432S 1N4148W DIODE D903 1

585 93G 6432S 1N4148W DIODE D923 1

586 93G 6432S 1N4148W DIODE D924 1

587 93G 6432V DIODE LL4148 GS08 D210 0

588 93G 6432V DIODE LL4148 GS08 D903 0

589 93G 6432V DIODE LL4148 GS08 D923 0

590 93G 6432V DIODE LL4148 GS08 D924 0

591 93G 39S 8 T RLZ11B LLDS ZD201 1

592 93G 39S 25 T RLZ5.1B ROHM ZD902 1

593 93G 39S 25 T RLZ5.1B ROHM ZD905 1

594 93G 39S 38 T PTZ9.1B ROHM ZD903 1

595 93G 39S 40 T RLZ13B ROHM ZD904 1

596 93G 39S 44 T RLZ18B LLDS ZD901 1

- 59 –

ViewSonic Corporation Confidential - Do Not Copy VG720

597 93G3004 4 DIODE RB050L-40 D201 1

598 PW1742QDV1AIP PWPC BOARD FOR AI

599 6G 31502 1.5MM RIVET 16

600 71G 55 9 T 铁氧体磁珠 J914 1

601 84G 56 1 FUSE 2A 250V BY WICKMAN F901 1

602 93G1020 752T UF4003PT DO-41 DIODE 1A D902 1

603 715G1492 1 PWPC 1

604 95G 90 23 TINCOATEDCOPPER J900 1

605 95G 90 23 TINCOATEDCOPPER J901 1

606 95G 90 23 TINCOATEDCOPPER J902 1

607 95G 90 23 TINCOATEDCOPPER J903 1

608 95G 90 23 TINCOATEDCOPPER J906 1

609 95G 90 23 TINCOATEDCOPPER J907 1

610 95G 90 23 TINCOATEDCOPPER J908 1

611 95G 90 23 TINCOATEDCOPPER J909 1

612 95G 90 23 TINCOATEDCOPPER J910 1

613 95G 90 23 TINCOATEDCOPPER J911 1

614 95G 90 23 TINCOATEDCOPPER J912 1

615 95G 90 23 TINCOATEDCOPPER J915 1

616 95G 90 23 TINCOATEDCOPPER J916 1

617 95G 90 23 TINCOATEDCOPPER J917 1

618 95G 90 23 TINCOATEDCOPPER J918 1

619 95G 90 23 TINCOATEDCOPPER J919 1

620 95G 90 23 TINCOATEDCOPPER J921 1

621 61G 17210252T 1KOHM 5% 1/4W R225 1

622 61G 17210252T 1KOHM 5% 1/4W R226 1

623 61G 17210252T 1KOHM 5% 1/4W R227 1

624 61G 17210252T 1KOHM 5% 1/4W R228 1

625 61G 17218252T 1.8KOHM 5% 1/4W R221 1

626 61G 17218252T 1.8KOHM 5% 1/4W R222 1

627 61G 17218252T 1.8KOHM 5% 1/4W R223 1

628 61G 17218252T 1.8KOHM 5% 1/4W R224 1

629 61G 17256152T 560OHM 5% 1/4W R923 1

630 61G175L47052T 47OHM +-5% 1/2W R921 1

631 61G175L47052T 47OHM +-5% 1/2W R922 1

632 65G517K102 5T 1000PF 10% Y5P 500V C922 1

633 67G 2151007NT 10UF 50V C908 1

634 67G 215330 3T 33UF +-20% 50V 105℃ LO C209 1

635 67G215Y1007KT LOW ESR EC10UF 50V C908 0

636 93G 64 1152T DIODE 1N4148 DO-35 D202 1

- 60 –

ViewSonic Corporation Confidential - Do Not Copy VG720

637 93G 64 1152T DIODE 1N4148 DO-35 D203 1

638 93G 64 1152T DIODE 1N4148 DO-35 D204 1

639 93G 64 1152T DIODE 1N4148 DO-35 D205 1

640 93G 64 1152T DIODE 1N4148 DO-35 D206 1

641 93G 64 1152T DIODE 1N4148 DO-35 D207 1

642 93G 64 1152T DIODE 1N4148 DO-35 D208 1

643 93G 64 1152T DIODE 1N4148 DO-35 D209 1

644 56G 158 10 T IC AZ431AZ-AE1 TO-92 IC903 0

645 56G 158 12 KIA431A-AT/P TO-92 IC IC903 1

646 57G 419 PP T 2PC945P Q903 1

647 57G 420 PP T TRANSISTOR 2PA733P Q902 1

648 65G517K102 5T 1000PF 10% Y5P 500V C921 1

649 705G 780 5720P D921/D922 ASS'Y

650 51G 200 1 散热油 2

651 90G6240 2 HEAT SINK 1

652 93G 60236 FMB-26L TO-220 DIODE D922 1

653 93G 60238 DIODE 10A 150V FCH10A15 D921 0

654 93G 60239 DIODE FME-210B TO-220 D921 1

655 93G1506 2 DIODE 15A 60V FMW-2156 D922 0

656 M1G1730 8128 SCREW 2

657 705G 780 5721P Q901 ASS'Y

658 51G 200 1 散热油 2

659 57G 667 30 2SK2645-54MR TO-220F Q901 1

660 57G 724 11 STP9NK65ZFP TO-220FP MO Q901 0

661 90G6240 1 HEAT SINK 1

662 M1G1730 8128 SCREW 1

663 705G 780 5722P R908 ASS'Y

664 61G152M10458G 100K OHM 5% 2W R908 1

665 96G 29 6 SHRINK TUBE UL/CSA 1

666 705G 780 5725P CN901 ASS'Y

667 87G 501 7 RF GP AC SOCKET 1

668 95G 900584 WIRE HARNESS 1

669 95G8021 3 11 HARNESS 100M 1

670 96G 29 6 SHRINK TUBE UL/CSA 1

671 705G 780 5733P Q203 ASS'Y

672 15G6284 1 PLATE 1

673 51G 200 1 散热油 0.2

674 57G 763 12 AOU401L TO-251 Q203 1

675 90G6259 1 HEAT SINK 1

676 AM1G1730 6128 SCREW 1

- 61 –

ViewSonic Corporation Confidential - Do Not Copy VG720

8. Exploded Diagram And Spare Parts List

- 62 –

ViewSonic Corporation Confidential - Do Not Copy VG720

- 63 –

ViewSonic Corporation Confidential - Do Not Copy VG720

- 64 –

ViewSonic Corporation Confidential - Do Not Copy VG720

9. Disassemble Process

9.1 Units Disassemble Process

9.1.1 Tools

 Glove

 Big cross screwdriver

 Small cross screwdriver

 Prize equipment or abandoned IC card

 Screw box

 Cushion

 Six angle sleeve spanner

9.1.2 Disassemble process

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

adown.(Picture 1)

2、 Disassemble the 4 screws that fix the stand, remove the stand..(Picture 2, 3, 4)

3、 Disassemble the 2 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, and rip up the back cover downwards.( as

showed in the following the picture 7,8)

5、 Disassemble the 6 screw M3*6MM through six angle sleeve spanner, showed in the

following picture 9.

6、 Disassemble the 2 fixed screws in the shield, remove the shield as the direction

arrowhead showed, refer to the following picture ,10.

7、 Disassemble the 5 screws and 4 pins of the PWPC board, remove the PWPC

board.(symbolized the following picture 11 with red color)

8、 Disassemble the 3 screws and 3 pins of the main board, remove the main board.

(symbolized the following picture 11 with blue color)

9、 Disassemble the 2 screws of the audio board, remove the audio board. (symbolized

the following picture 11,12 with yellow color)

10、 Disassemble the 4 screws of the speaker, remove the speaker, refer to the following

picture 13

11、 Disassemble the 4 fixed screws of the main frame, as showed in the following the

picture 14

12、 Disassemble the connect pins of the key board, as showed in the following the

picture 15. remove the bezel as the direction arrowhead showed, refer to the

following picture ,16,17.

13、 Disassemble the 4 fixed screws of the panel, remove the main frame, as showed in

the following the picture 18,19. Do not damage the cable of the panel.

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

- 65 –

ViewSonic Corporation Confidential - Do Not Copy VG720

9.1.3 Show pictures

：

（Picture 1）（Picture 2）

（Picture 3）（Picture 4）

（Picture 5）（Picture 6）

（Picture 7）（Picture 8）

- 66 –

ViewSonic Corporation Confidential - Do Not Copy VG720

（Picture 9）（Picture 10）

（Picture 11）

（Picture 12）（Picture 13）

- 67 –

ViewSonic Corporation Confidential - Do Not Copy VG720

（Picture 14）（Picture 15）

（Picture 16）（Picture 17）

（Picture 18）

（Picture 19）

（Picture 20）

- 68 –

ViewSonic Corporation Confidential - Do Not Copy VG720

9.2 Stand A’ssy Disassemble Process

（Picture 1）（Picture 2）

（Picture 3）（Picture 4）

（Picture 5）（Picture 6）

- 69 –

ViewSonic Corporation Confidential - Do Not Copy VG720

（Picture 7）（Picture 8）

（Picture 9）（Picture 10）

（Picture 11）（Pictures 12）

- 70 –

ViewSonic Corporation Confidential - Do Not Copy VG720

（Picture 13）（Picture 14）

（Picture 15）（Picture 16）

（Picture 17）（Picture 17）

- 71 –

ViewSonic Corporation Confidential - Do Not Copy VG720

10. Block Diagram

Scaler TSUM56AK

(Include:ADC,OSD,MCU etc)

Flash

- 72 –

ViewSonic Corporation Confidential - Do Not Copy VG720

11. Schematic Diagram

11.1 Power

C709

0.1uF

R713

NC

PC5V

R709

0 1/16W

VCC3.3

VCC3.3 4

+5V

R702

51 1/16W

+

C710

100uF/ 25V

C

B

E

Q702

CHT2907

+

C705

1uF/ 16V

D701

1N4148

R720 0 1/ 16W

C711

0.1uF

VCC1.8 4

VCTRL 4

PC5V 3+5V3,4

VCC3.3 4

+5V

+5V3,4

Tit le

Size Document Number Rev

Dat e: Sheet of

POWER

A

TSUM57AK

B

15Monday, May 30, 2005

R705 4.7K 1/ 16W

Q701

PMBS3904

R707

4.7K 1/16W

R711

10K 1/16W

2

4

6

8

10

12

1

3

5

7

9

11

CN701

CONN

4.7K

C51

1UF4.7K XX

Q4

MMBT3904

R33

4.7KX

R29

0

R32

1UF

BL_ADJ(DC)

X

1K

0V ~ 5V

0V ~ 3.3V

R31

D C

P W M

BL_ADJ

47

C32R31

N.C

1uF4K7

+

C717

10uF/ 16V

R717

10K 1/16W

R714

10K 1/16W

R725

4.7K 1/16W

C718

0.1uF

C715

0.1uF

Q706

PMBS3904

1

2

3

44

55

66

77

88

9

H3

TP

+12V

GND

Q704

AO3401L

GND

R727

10K 1/16W

GND

C701

NC

VI

3VO 2

GND

1

VO 4

U701

NC/LT1117-18

+5V

+

C703

100uF/ 25V

+3V3

C704

NC

SOT-223

C713

0.1uF

BL_ADJ

VIN

3

ADJ

1

VOUT 2

VOUT 4

U702

AIC1084-33PM

+3V3

+5V

R723 51K 1/16W

D704

SMAL140

GND

R724 51K

GND

C714

0.1uF

3

1

2

D703

BAT54C

For RSDS and Panel VCC=12V

Q707

PMBS3904

+12V

C716

0.1uF

+12V

+5V

+12V 4

Q705

AO3401L

+5V

R732

10 1/16W

R712 4.7K 1/ 16W

R715

NC

R710 NC

12/21 MODIFY

R706 NC

+

C719

NC/10uF/16V

R722

NC

+5V3,4

R719

NC/10K

Q703

PMBS3904

TO-263

R701

1K 1/16W

+

C707

100uF/25V

R726 N C/4K7

D704(SSM12L) Vf=0.38V and If=1A.

So when system power on, the

system loading is about 400mA

(3.3V is about 200mA and 1.8V is

about 200mA), So D35 changed

from 1N4148(or BAT42) to

SSM12L(schottky diode).

P.S: The 1N4148 Vf=0.7V~1V can't meet

LDO spec. The BAT42, Vf is OK but the

If=200mA(forward current) can not

meet current spec.

R721

0 1/16W

1

2

3

44

55

66

77

88

9

H1

TP

R716

NC

C706

0.1uF

1

2

3

44

55

66

77

88

9

H2

TP

C708

1uF

R718

NC/10K

R708

10K 1/16W

R728

NC/4K7

C720

NC/0.1uF

Adj_BACKLIGHT

on_BACKLIGHT 4

on_Panel_12V4

VLCD_12V 5

on_Panel4

VLCD 5

VCC5V

+5V +12V

+5V

+12V+3V3

VLCD_12V

+5V

VLCD

+5V

+3V3+3V3

R731

NC

+5V

R729

NC/10K

+5V

+

C712

100uF/25V

BL_ON

VCC3.3

+

C702

4.7uF/16V

Recommond to used "Blue" parts circuit

for VCC1.8V if you want to suppoert DDC

function when system power off

R704

100 1/16W

D702

1N4148

R730

0 1/16W

VCC1.8

R703

2K 1/16W

- 73 –

ViewSonic Corporation Confidential - Do Not Copy VG720

11.2 Scaler

C428

0.1uF

FB402

600 OHM

R420 100 1/16W

R418 100 1/16W

R432 0 1/16W

FB403

600 OHM

FB404

600 OHM

C429

0.1uF

C425

0.1uF

FB 405

600 OHM

PB1

VCTRL 2

VCC 3.3

C430

0.1uF

AVDD

VCC 1.8

FB406

600 OHM

VDD C

VDD P

VCC 3.3 AVD D

VDD C

VDDP

C424 0. 1uF

+5V

PB3

C404

0.1uF

DDC_WP 3

R475

3.9K 1/ 16W

VCC3.3

GPO[0.. 4]

2

4

6

8

10

12

14

16

1

3

5

7

9

11

13

15

CN403

CONN

DET_VGA 3

DET_DVI 3

AVDD

on_BACKL IGH T 2

on_PANEL 2

R430

1K 1/16W

C431

NC

R431 0 1/16W

Volume

R433 N C

AUDI O_MUTE

PB7

adj_BACKLI GHT 2

PB10

+

C403

4.7uF /16V

C417

0.1uF

PB9

E

B

C

Q405

NC

PB[0..5]

VCC3.3

+

C408

10uF/ 16V

DDCD_SDA3

DDCA_SCL3

DDCA_SDA3

DDCD_SCL3

FB407

600 OHM

FB408

600 OHM

RIN0P

59

GIN 0P

56

SOGIN 0

57

BIN 0P

54

RIN0N

58

GIN 0N

55

BIN 0N

53

HSYNC0

63

VSY NC 0

64

REXT

51

REFP

62

REFM

61

SDO

70

SCK

72 SCZ

71

SDI

73

GPIO_P27/ PWM1 79

PWM1/GPIO_P25 21

NC /LVAC KM/NC 108

XI N

32

XOU T

33

RA1P/ LVA2P/ RA2 109

RA1N /LVA2M/R A3 110

RA2P/ LVA1P/ RA4 111

RA2N /LVA1M/R A5 112

RA3P/ LVA0P/ RA6 113

RA3N /LVA0M/R A7 114

CLKAP/ LVB3P/ LHSY N C 118

CLKAN /LVB3M/LVSY NC 119

CLKBP/ LVBCKP/LC K_ODD 120

CLKBN /LVBC KM/LD E 121

NC /LVB2P/ NC 122

NC/LVB2M/NC 123

BB1P/LVB 1P/BB2 124

BB1N/ LVB1M/BB3 125

BB2P/LVB 0P/BB4 126

BB2N/ LVB0M/BB5 127

NC/LVACKP/NC 107

GA3N/ LVA3M/GA7 106

GA3P/LVA3P/GA6 105

GND

41

GND

47

RX2P

39

RX2N

40

RX1P

42

RX1N

43

AVDD_ DVI 44

RX0P

45

RX0N

46

RXCKP

48

RXCKN

49

GND

38

GND

96

GND

116

VDDP 67

VDDC 12

MOD E [1]

104 MOD E[0 ]

102

VCTRL 11

VDDP 14

VDD_OTP 68

DDCA_SDA

65

DDCA_SCL

66

DDCD_SDA

36

DDCD_SCL

37

PWM0/GPIO_P26 29

AVDD_ DVI 50

VDDC 97

GPIO_P15 69

PWM2/GPIO_P24 78

GPIO_P16 20

GPIO_P17/ SAR0 22

GPIO_P00/ SAR1 23

GPIO_P01/ SAR2 24

GPIO_P06 27

GPIO_P07 28

GPIO_P13 30

GPIO_P14 31

GPIO_P16 35

DDCROM_SDA 76

DDCROM_SCL 77

RST

19

GA2P/ NC /GA4 100

GA2N/N C/GA5 101

GA1P/ NC /GA2 98

GA1N/N C/GA3 99

BA3P/N C/ BA6 93

BA3N/ NC /BA7 94

BA2P/N C/ BA4 91

BA2N/ NC /BA5 92

BA1P/N C/ BA2 89

BA1N/ NC /BA3 90

RB1P/NC/RB2 9

RB1N/NC/RB3 10

RB2P/NC/RB4 15

RB2N/NC/RB5 16

RB3P/NC/RB6 17

RB3N/NC/RB7 18

GB1P/ NC /GB2 2

GB1N/N C/GB3 3

GB2P/ NC /GB4 5

GB2N/N C/GB5 6

GB3P/ NC /GB6 7

GB3N/N C/GB7 8

BB3P/N C/ BB6 128

BB3N/ NC /BB7 1

ESP 80

OSP 81

GPO0 88

GPO1 87

GPO2 86

GPO3 85

GPO4 84

GPO5 83

GPO6 82

GPIO_P02/ SAR3 25

GPIO_P03 26

GPIO_P22 75

GPIO_P23 74

AVDD_PLL 52

AVDD_ MPLL 34

AVDD_ MPLL 4

VDDP 95

VDDP 103

VDDP 115

VDDC 117

AVDD_ADC 60

GND

13

U401

TSUM57AK

C423 22pF

GND

1

RST 2

VCC

3

U406

ASM810MEURF-T

R486

NC

PB11

X4 0 1

14.318MHz

Volume

C421 22pF

C616

NC

ESP 5

PA[0..7] 5

R487

10K 1/16W

PA[8. .13] 5

PB[0. .5] 5

GPO[0..4] 5

PB[12. .23] 5

OSP 5

R488 NC

PA[14. .19] 5

PB[6. .11] 5

R+3

R-3

WP

G+3

G-3

B+3

B-3

R407 NC

CLK+3

CLK-3

R410 NC

OUT-L-

VPLLVDVI

Q402

PMBS3904

VMPLL

Q404

PMBS3904

Reset

Circuit

VCC3.3

VDVI

VCC 3.32

A0 1

A1 2

A2 3

GND 4

SDA

5SCL

6WP

7VCC

8

U403

AT24C16N-10SC -2.7

VCC 3.3 VPLL

VCC3.32

C422

0.1uF

R477 1K 1/16W

VCC3.3

RSDS/LVDS/TTL

OUT-R+

+

C418

10uF/ 16V NC

OUT-R-

C405

0.1uF

C406

0.1uF

+5V 2, 3

R424

10K 1/16W

R425

10K 1/16W

R419 0 1/16W

R404

10K 1/16W NC

C407

0.1uF

KEY _MENU

C409

0.1uF

C410

0.1uF

C411

0.1uF

C412

0.1uF

C413

0.1uF

AUDI O_STBY

VCC 3.32

VMPLLVCC3.3

2

4

6

8

10

12

14

1

3

5

7

9

11

13

CN404

CONN

R474

3.9K 1/16W

C415

0.1uF

C414

0.1uF

PA1

PA0

PA3

PA4

PA2

OUT-L-

PA5

PA6

PA7

PA8

PA9

PA10

PA11

OUT-R-

Tit l e

Size D ocum ent Nu mber R ev

Dat e: Sheet of

SCALER

A

TSUM57AK

C

15Thursday , June 30, 2005

PA13

PA14

PA12

R481

NC

PA16

PA15

PA17

R482

NC

R483

NC

VCC3.3

KEY AWP

C416

0.1uF

GPO1

GPO0

GPO4

GPO2

GPO3

R403 390 1%

C419

0.1uF

C420

0.1uF

FB401

600 OHM

R489

10K 1/16W

R490

10K 1/16W

KEY 1

KEY 2

C401

0.1uF

R478 1K 1/16W

VCC3.3

VCC 3.32

+5V

SOG3

GNDB3

VSY NC3

VCC 3.32

GNDR3

RIN3

VCC 1.82

R408

10K 1/16W

BIN3

HSYNC3

GNDG3

GIN3

R479 1K 1/16W

KEY _AUTO

R409

120 1/16W

+5V

+12V

+12V 2

+5V 2, 3

OSP

KEY _A

KEY _B

R429 100 1/16W

R428 100 1/16W

R480 1. 5K 1/ 16W

PA[14. .19]

PB4

KEY _C

KEY _RI GHT

Q401

PMBS3906

OUT-L+

PB0

OUT-R+

LED_ALED _G

Q403

PMBS3906

ESP

R411 100 1/16W

LED_G

POWER

LED_A

POWER

on_PANEL_12V 2

+5V

PB[12. .23]

PB5

PB12

VCC3.3

PB13

KEY_LEFT

KEY _AKEY _B

KEY _C

PB20

R484

10K 1/16W

R485

10K 1/16W

PB14

LED_A

AUD IO_STBY

AUD IO_MUTE

+5V

PB[6. .11]

PB21

PB15

PB22

PB6

PB16

KEY 1

KEY 2

PB23

PB17

KEY _AUTO

KEY _MENU

PB18

PB19

PA18

1 2

D401

RLZ36B

1 2

D402

RLZ 36B

R414

120 1/16W

LED_G

R421 0 1/ 16W

VCC 3.3

R413

10K 1/16W

R476 1K 1/16W

PA19

CE# 1

SDO 2

WP#

3

VSS

4SDI 5

SCK 6

HOLD#

7VDD

8

U402

SST25VF010-20-4C-SAE

R426

10K 1/16W

R427 100 1/16W

PB8

PB2

R406

10K 1/16W

R412

10K 1/16W

R417 20K 1/16W

R423 4.7K 1/16W

R422 4.7K 1/16W

Option

OUT-L+

R405

22K 1/16W

KEY _RI GHT KEY _LEF T

POWER

VCC3.3

C426

0.1uF

R415

10K 1/16W

R416

10K 1/16W

PA[8. .13]

C427

0.1uF

P[0..7]

GND

- 74 –

ViewSonic Corporation Confidential - Do Not Copy VG720

11.3 INPUT

DDC_WP 4

D426

LL5232B 5.6V 5%

DDC_WP 4

R455 100 1/16W

R456 100 1/16W

R457 10K 1/16W

R459

10K 1/16W

R460

10K 1/ 16W

R468 10 1/16W

R469 10 1/16W

C433 0.047uF

C434 0.047uF

C435 0.047uF

HSI

C436 0.047uF

C438 0.047uF

C437 0.047uF

R472

NC

RED-

GREEN-

BLUE-

1

6

2

7

3

8

4

9

5

11

12

13

14

15

10

1716

CN 405

DB15

HPD

DVI5V

R458 100 1/16W

SCL_DVI

PC5V

RED+

SCL_VGA

SDA_VGA

BLUE+

VGA_CON

R473

NC

VCC 5V

R471

10K 1/16W

DAT0+

GREEN+

C440 0.1uF C441 0.1uF

DAT0-

DAT1+

DAT2+

DAT2-

DCLK+

DAT1-

DCLK-

R452

10K 1/ 16W

R461

10K 1/ 16W

C444

0.1uF

C446

0.1uF

D406

MLL5232B 5.6V

C447

0.1uF

PC5V

+5V 2, 4

C448

0.1uF

C449

0.1uF

C450

0.1uF

VSI

FB410 0 1/16W

FB412 0 1/16W

FB411 0 1/16W

C452

0.1uF

C451

0.1uF

C453

0.1uF

C454

0.1uF

Tit le

Size Document Number Rev

Dat e: Sheet of

INPUT

A

TSUM57AK

B

15Monday , May 30, 2005

A0 1

A1 2

A2 3

GND 4

SDA

5SCL

6WP

7VCC

8

U405

M24C02

1 2

D425

RLZ 36B

ESD_5V

D409

MLL5232B 5.6V

3

1

2

D423

BAV99

R440

75 1/16W

D415

LL5232B 5.6V 5%

R448

2.2K 1/16W

D414

LL5232B 5.6V 5%

R442 100 1/16W

C443

220pF

3

1

2

D421

BAV99

C432 0.047uF

R447 1K 1/ 16W

R436 56 1/ 16W

R451

10K 1/16W

3

1

2

D422

BAV99

FB409 120 OHM

D410

MLL5232B 5.6V

R445 100 1/ 16W

3

1

2

D417

BAV99

R449

2.2K 1/16W

3

1

2

D413

BAV70

3

1

2

D418

BAV99

D416

LL5232B 5.6V 5%

R470

1K 1/16W

C445

0.1uF

R446 1K 1/ 16W

R438

75 1/16W

R444

10K 1/ 16W

C439 0.1uF

R441 100 1/16W

R453 100 1/16W

3

1

2

D420

BAV99

3

1

2

D405

BAV99

3

1

2

D407

BAV70

R435 56 1/ 16W

DAT2- 1

DAT2+ 2

2/4shield 3

DAT4- 4

DAT4+ 5

DDC SCL 6

DDC SDA 7

VSY NC 8

R25

HSYNC 28

DAT1- 9

DAT1+ 10

1/3shield 11

DAT3- 12

DAT3+ 13

+5V 14

SYNC GND 15

HPD 16

G26

RGB GND 29

DAT0- 17

DAT0+ 18

0/5shield 19

DAT5- 20

DAT5+ 21

clk shield 22

clk+ 23

clk- 24

B27

CN 406

JACK DVI

R450

10K 1/16W

D412

MLL5232B 5.6V

3

1

2

D419

BAV99

A0 1

A1 2

A2 3

GND 4

SDA

5SCL

6WP

7VCC

8

U404

M24C02

R462 10 1/16W

R437 470 1/16W

C442

33pF

R443 100 1/16W

D408

MLL5232B 5.6V

D411

MLL5232B 5.6V

R434 56 1/ 16W

R454 100 1/16W

3

1

2

D404

BAV99

3

1

2

D424

BAV99

R439

75 1/16W

3

1

2

D403

BAV99

VSYNC 4

BIN 4

GIN 4

RIN 4

DET_VGA 4

GNDB 4

GNDG 4

GNDR 4

CLK- 4

B+ 4

SOG 4

HSYNC 4

DET_DVI 4

G+ 4

R+ 4

CLK+ 4

DDCA_SDA4

G- 4

B- 4

R- 4

ESD_5V

DDCD_SCL4

DDCD_SDA4

DDCA_SCL4

DVI5V

PC5V

+5V

SDA_DVI

R463 10 1/16W

R464 10 1/16W

R465 10 1/16W

R466 10 1/16W

R467 10 1/16W

- 75 –

ViewSonic Corporation Confidential - Do Not Copy VG720

11.4 Inverter

C222

0.47uF/25V

C210

1uF/25V

C207

330pF

C206

NC

PT202

POWER X'FMR

1

8

11

9

612

Q205

PMBS3906

R230

470Ω 1/10W

C212

18pF/3KV

R222

1.8KΩ 1/4W

Q207

KTC5103L-Y -U/P

R231

12KΩ 1/10W C223

0.1uF/25V

D208

1N4148

Q204

PMBS3904

R227

1KΩ 1/4W

R226

1KΩ 1/4W

C205 1uF/25V

C201

0.1uF/25V

CN203

CONN

1

2

R201

2.4KΩ 1/10W

R208 0Ω 1/10W

C204

0.1uF/25V

D203

1N4148

R206

12KΩ 1/10W

+

C209

33uF/50V

R209 0Ω 1/10W

CN202

CONN

1

2

R213

4.7KΩ 1/10W

C213

18pF/3KV

Q201

DTC144WKA

PWPC1742QDV1P(715G1492-1)

A

2. FOR 17" 4 LAMPS INVERTER

AOC (Top Victory) Electronics Co., Ltd.

22

Tuesday , July 05, 2005

Tit le

Size Document Number Rev

Date: Sheet of

R207

10KΩ 1/10W

D205

1N4148

Q206

KTC5103L-Y -U/P

+

C203

470uF/25V

C211

12pF/3KV

Q203

AOU401L

2

1

3

TP2

HVO

1

R214

12KΩ 1/10W

C208

0.1uF/25V

R232

51KΩ 1/10W

R202

220Ω 1/10W

R210

47KΩ 1/10W

ON/OFF

R228

1KΩ 1/4W

C214

12pF/3KV

CN201

CONN

1

2

TP1

HVO

1

+12V

R223

1.8KΩ 1/4W

R203

2.4KΩ 1/10W

is power GND

D207

1N4148 D206

1N4148

D202

1N4148

R221

1.8KΩ 1/4W

Q202

DTA144WKA

R224

1.8KΩ 1/4W

R212

62KΩ 1/10W

C221

0.33uF/250V

PT201

POWER X'FMR

1

8

11

9

612

GND

C202

0.1uF/25V

IC201

TL1451ACD

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16

CT

RT

1IN+

1IN-

1FEEDBACK

1DTC

1OUT

GND VCC

2OUT

2DTC

2FEEDBACK

2IN-

2IN+

SCP

REF

ZD201

RLZ11B

1 2

DIM

R205

16KΩ 1/10W

R225

1KΩ 1/4W

TP4

HVL

1

D204

1N4148

R204

470Ω 1/10W

TP3

HVO

1

R229

680Ω 1/10W

D209

1N4148

L201 L

is signal GND

D210

LL4148-GS08

R211

NC

CN204

CONN

1

2

D201

RB050L-40

- 76 –

ViewSonic Corporation Confidential - Do Not Copy VG720

11.5 A-D Power

R914

4.7KΩ 1/10W

R910

2.2KΩ 1/ 10W

DIM

+

C925

470uF/25V

R920

NC

D924

LL4148-GS08

R901 330KΩ 1/8W

L903 L

L902

L

1

4

2

3

R929

33KΩ 1/10W

+5V

R916

220Ω 1/10W

ZD903

PTZ9.1B

1 2

C912

0.001uF

+

C904

100uF/450V

GND

R911

3.6KΩ 1/ 10W

R927

NC

+

C924

1000uF/16V

C935

0.001uF/250V

C927

0.1uF

F901

FUSE

+

C908

10uF

R909

68Ω 1/10W

R905

3.3KΩ 1/8W

C922

0.001uF/500V

ZD904

RLZ13B

1 2

ZD902

RLZ5.1B

1 2

+

C923

1000uF/25V

t

NR901

NTCR

12

-+

DB901

KBP206G

1 4

32

C929

0.1uF

IC902

PC123FY 2 4P

12

43

L904 L

+

C906

100uF/25V

VAR901 NC

R926

NC

L901

L

1

2

4

3

C901

0.001uF/250V

F902

0Ω 1/8W

D903

LL4148-GS08

R913

75KΩ 1/10W

R922

47Ω 1/2W

R924

1KΩ 1/10W

CN901

CONN

1

2

3

C934

NC

R904

3.3KΩ 1/8W

C907

0.1uF

+12V

D921

FME-210B

1

2

3

+5V

R925

0Ω 1/8W

IC903

KIA431A-AT/P

D923

LL4148-GS08

Q902

2PA733P

1

32

R900

330KΩ 1/8W

ZD901

RLZ18B

1 2

D901

BA159GPT

R932

1KΩ 1/10W

R917

10KΩ 1/10W

R915

22Ω 1/10W

R918

0.39Ω 2W

R933

2.4KΩ 1/10W

C905

0.0015uF/2KV

R903

3.3KΩ 1/8W

ON/ OFF

C928

0.1uF

CN902

CONN

1

2

3

4

5

6

7

8

R908

100KΩ 2W

Q901

2SK2645-54NR

+

C931

1000uF/25V

C933

NC

ZD905

RLZ5.1B

1 2

C903 0.47uF/250V

NCP1203D60R2G

IC901

NCP1203D60R2G

1

3

4

7

2

5

6

8

R923

560Ω 1/4W

C932

0.47uF/25V

R921

47Ω 1/2W

R906

NC

PWPC1742QDV1P(715G1492-1)

A

1.POWER OUTPUT 12V & 5 V

AOC (Top Victory) Electronics Co., Ltd.

B

12

Tuesday , July 05, 2005

Tit l e

Size Document Number Rev

Date: Sheet of

R931

1KΩ 1/10W

D902

UF4003

R907

NC

C900

0.0022uF/250V

C902

0.001uF/250V

R919

20KΩ 1/10W

C921

0.001uF/500V

R912

100Ω 1/10W

C911

470pF/50V

C930

NC

Q903

2PC945P

1

23

T901

POWER X'FMR

4

11

7

5

6

1

2

9

8

12

10

R934

NC

R902

330KΩ 1/8W

+

C926

470uF/16V

R930

3.6KΩ 1/10W

+12V

+

C909

47uF/25V

D922

FMW-2156

1

2

3



- 77 –

ViewSonic Corporation Confidential - Do Not Copy VG720

11.6 Audio

R605

NC

AVDD

R604 0 1/ 16W

GND GND

ROUT+

ROUT-

LOUT+

LOUT-

LOUT- ROUT-

LOUT+ ROUT+

/SD

VOLUMEMUTE/ MOD E

GND

C604

0.001uF

C631

0.001uF

C633 NC

C632

0.001uF

C634 NC

C635

NC

C636

NC

C612

0.001uF

C615

0.001uF

C638

NC

C639

NC

C640

NC

GND

C641

NC

GND

/SD

1

RINN

2

RINP

3

V2P5

4

LINP

5

BSLN

13

PVCCL

14

PVCCL

15

LOUTN

16

LOUTN

17

PGNGL

18

PGNGL

19

LOUTP

20

LOUTP

21

PVCCL

22

PVCCL

23

BSLP

24

VCLAMPL 25

AGND 26

ROSC 27

COSC 28

AVdd 29

AGND 30

VAROUTL/NC 31

VAROUTR/ NC 32

AVcc 33

MUTE 34

MODE_OUT/NC 35

VCLAMPR 36

BSRP 37

PVCCR 38

PVCCR 39

ROUTP 40

ROUTP 41

PGNGR 42

PGNGR 43

ROUTN 44

ROUTN 45

PVCCR 46

PVCCR 47

BSRN 48

LINN

6

AVddREF

7

VREF

8

VARDIFF/AGND

9

VARMAX/AGND

10

VOLUME

11

REFGND

12

U601

TPA3003D2PFBR

C606

0.1uF/16V

C618

0.1uF/ 16V

C627

0.1uF/16V

GND

FB608

600 OHM

C628

0.1uF/ 16V

C621

0.1uF/16V

C607

0.01uF

C626

0.01uF

C629

0.01uF

C613 1uF/ 16V

C614 1uF/ 16V

C616 1uF/ 16V

C619 1uF/ 16V

C623 1uF/ 16V

5

4

1

3

2

CN601

PHONEJ ACK

C624

1uF/16V

C610

1uF/ 16V

FB605

600 OHM

C643

NC

C630 0.001uF

C642

NC

C602 0.001uF

C644

NC

C645

NC

+

C605

10uF/50V

+

C625

10uF/50V

+

C617

10uF/50V

GND

FB602

600 OHM

FB604

600 OHM

FB610

600 OHM

GNDGND

FB612

600 OHM

FB607

600 OHM

5V

R606

NC

R601

10K 1/16W

LIN

GND

AVDDRef

GND

RIN

R609

10K 1/16W

R610

10K 1/16W

R612

39K 1/16W

R611

39K 1/16W

FB606

600 OHM

C611 1uF/ 16V

Title

Size Document Number Rev

Date: Sheet of

715L1178-H H

AUDIO BD FOR TPA3002/TPA3003

B

11Monday , July 04, 2005

GND

+12V

GND

+12V

AVDD

C609

0.1uF/ 16V

C603

0.001uF

FB609

600 OHM

FB601

600 OHM

C608

0.01uF

+

C601

10uF/50V

2

4

6

8

10

12

14

1

3

5

7

9

11

13

CN602

CONN

R602

0 1/16W

+

C620

470uF/16V

R603

NC

1

2

3

4

CN 603

CONN

R608

1K 1/16W

C622

220pF

R607

120K 1/ 16W

/SD

LOUT+LOUT-

MUTE/ MOD E

ROUT- ROUT+

VOLUME

GND

- 78 –

ViewSonic Corporation Confidential - Do Not Copy VG720

11.7 Key Pad

SW001

SW

GND

LCD ON/OFF

KEY 2

KEY 1

KEY DOWN

3

4

1

2

LED001

LED

KEY UP

GND

VOLUME -

VOLUME +

LED ORANGE

MUTE

LED GREEN

1

2

3

4

5

6

7

8

9

10

11

CN001

CONN

SW003

SW

SW004

SW

SW005

SW

SW006

SW

SW007

SW

SW008

SW

Title

Size Document Number Rev

Date: Sheet of

CONTROL KEY PAD (Switch)

B

KEY PAD (For Viewsonic)

AOC (Top Victory) Electronics Co., Ltd.

A

11Thursday , May 05, 2005

SW002

SW

GND

- 79 –

ViewSonic Corporation Confidential - Do Not Copy

VG720

12. PCB Layout Diagram

12.1 MAIN BOARD PCB TOP VIEW

- 80 –

ViewSonic Corporation Confidential - Do Not Copy

VG720

12.2 MAIN BOARD PCB BUTTON VIEW

- 81 –

ViewSonic Corporation Confidential - Do Not Copy VG720

12..3 KEYBOARD TOP VIEW

12.4 KEYBOARD BUTTON VIEW

- 82 –

ViewSonic Corporation Confidential - Do Not Copy VG720

12.5 POWER PCB TOP VIEW

- 83 –

ViewSonic Corporation Confidential - Do Not Copy VG720

12.6 POWER PCB BUTTON VIEW

- 84 –

ViewSonic Corporation Confidential - Do Not Copy VG720

12.6 AUDIO PCB TOP VIEW

- 85 –

ViewSonic Corporation Confidential - Do Not Copy VG720

12.6 AUDIO PCB BUTTON VIEW

- 86 –

ViewSonic Corporation Confidential - Do Not Copy VG720

* Reader’s Response*

Dear Readers:

Thank you in advance for you feedback on our Service Manual, which allows continuous

improvement of our products. We would appreciate your completion of the Assessment Matrix

below, for return to ViewSonic Corporation.

Assessment

A. What do you think about the content after reading VG720 Service Manual?

Unit Excellent Good Fair Bad

1. Precautions And Safety Notice

2. Specification

3. Front Panel Control and Indicators

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram And Spare Parts List

9. Block Diagram

10. Schematic Diagram

11. PCB Layout Diagram

B. Are you satisfied with the VG720 Service Manual?

Item Excellent Good Fair Bad

1. Service Manual Content

2. Service Manual Layout

3. The form and listing

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

Reader’s Basic Data:

Name: Title:

Company:

Add:

Tel : Fa x :

E-Mail:

After completing this form, please return it to ViewSonic Quality Assurance in the USA at

facsimile 1-909-839-7943. You may also e-mail any suggestion to the Director, Quality System

& Process (marc.maupin@viewsonic.com)

VG720

Navigation menu

Versions of this User Manual:

Views

Navigation