VG720

User Manual: VG720

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Service Manual
ViewSonic VG720
Model No VS10791
17” Color TFT LCD Display

Manufacture Date: Aug-10-05

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Copyright
Copyright © 2005 by ViewSonic Corporation. All rights reserved. No part of this publication
may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into
any language or 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

Dec-28-05

Update the Handing and Placing Methods
and the Circuit Description and the
Adjustment Procedure

YG.WANG

A01

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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

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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 refer 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
Surface of the LCD panel is pressed by fingers
panel or the front cover of the monitor. Do
and that may cause “Mura.”
not touch the surface of the polarizer.

Take out the monitor with cushions

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

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Placing the monitor on foreign objects. That
Place the monitor on a clean and soft foam
could scratch the surface of the panel or cause
pad.
“Mura.”

Place the monitor on the lap, the panel The panel is placed facedown on the lap. That
surface must be upwards.
may cause “Mura.”

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2.

Specification

2.1 PRODUCT SPECIFICATIONS
LCD Panel

17.0” TFT

Recommend Resolution

1280 x1024@60Hz

Pixel Dimension

0.264(H) x 0.264(V)mm

LCD Display Color

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

Viewing Angle

Horizontal: 140 °
Vertical: 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.)

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2.2 INTERFACE DESCRIPTION
D-SUB 15 PIN CONNECTOR

1
6
11

5
10
15

Pin Number

Pin Function

1

Red video input

2

Green video input

3

Blue video input

4

No Connection

5

Ground

6

Red video ground

7

Green video ground

8

Blue video ground

9

+5V

10

H/V sync ground

11

No connection

12

(SDA)

13

Horizontal sync (Composite sync)

14

Vertical sync

15

(SCL)

SIGNAL LEVEL

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DVI-D 24 PIN CONNECTOR

Pin No.

Signal Name

Description

1

RX2-

TMDS negative differential input, channel 2

2

RX2+

TMDS positive differential input, channel 2

3

GND

Logic Ground

4

Reserved 4

Reserved. No connection

5

Reserved 5

Reserved. No connection

6

DDC-CLK

DDC2B Clock

7

DDC-DAT

DDC2B Data

8

Reserved 8

Reserved. No connection

9

RX1-

TMDS negative differential input, channel 1

10
11
12

RX1+
GND
Reserved 12

TMDS positive differential input, channel 1
Logic Ground
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 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
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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
Control

and down

buttons.

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.

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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.
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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.

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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

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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.
Monitor Block Diagram
Flat Panel and
CCFL backlight

CCFL Drive.

RS232 Connector
For white balance
adjustment in factory
mode

Main Board

Power Board
(Include: adapter, inverter)

Video signal, DDC
Key Board
AC-IN
100V-240V

4.2

HOST Computer

MAIN BOARD BLOCK FUNCTION DESCRIPTION
The main board contains panel control logic, brightness control logic, DDC and DC
convert DC circuit and so on.
PWPC board

R
G
B
H
V
SDA
SCL

TSUM56AK

OSC
EPROM

EPROM

Backlight and Panel

Keyboard

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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

Bridge
Rectifier
and Filter

EMI filter

Rectifier
CMOS

Transformer

Start Circuit
R903, R904,R905

CN902
5V

PWM
Control IC
OSC and
Output
Circuit

Over
Voltage
Protect

12V
ON/OF

MOSFET
Q203

DC Convert
Circuit

Lamp
Feedback
Circuit

Over
Voltage

PWM
Control IC

ON/OFF
Control

DIM

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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:
Pin
70
71
72
73
65
66
36
37
19
22
11
63
64
62
61
51
21
29
4
33
34
44、50
60
52
34
14、67、95、
103、115
13、38、41、
47、96、116

Symbol
SDO
CSZ
SCK
SDI
DDCA_SDA/RS232_TX

Description
SPI flash serial data output; Input w/5V-tolerant
SPI flash chip select; output
SPI flash serial select; output
SPI flash serial data input; output
DDC data for analog interface; 4mA driving
strength/UART transmitter/GPIO; I/O w/5V-tolrant
DDCA_SDA/RS232_RX DDC
data
for
analog
interface/UART
transmitter/GPIO;Input w/5V-tolrant
DDCD_SDA
DDC data for DVI interface; 4mA driving strength;
I/O w/5V-tolerant
DDCD_SCL
DDC clock for DVI interface; Input w/5V-tolerant
RST
Chip reset; High reset; Input w/5V-tolerant
RSTN
Chip reset; Low reset; Input w/5W-toerant
VCTRL
Regulator control; Output
HSYNCO
Analog HSYNC input
VSYNCO
Analog VSYNC input
REFP
Internal ADC top de-coupling pin
REFM
Internal ADC bottom de-coupling pin
REXT
External resistor 390 ohm to AVDD＿DVI
PWM1
PWM1; 4mA driving strength; Output
PWM0
PWM0; 4mA driving strength; Output
BYPASS
For External Bypass Capacitor
XIN
Xin; Crystal Oscillator Input
XOUT
Xout; Crystal Oscillator Output
DVI Power 3.3V
AVDD＿DVI
ADC Power 3.3V
AVDD＿ADC
PLL Power 3.3V
AVDD＿PLL
MPLL Power 3.3V
AVDD＿MPLL
VDDP

Digital Output Power 3.3V

VDDC

Digital Core Power 1.8V

AIC1084-33PM (U702): DC power convert, used to 5v convert 3.3v.
LT1117-18(U701): DC power convert, used to 5v convert 3.3v.
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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

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PIN Function
TERMINAL
NO.
NAME
AGND
9,10,26
AVcc
33
AVDD
29
AVDDREF 7
BSLN
13
BSLP
24
BSRN
48
BSRP
37

I/O

DESCRIPTION

O
O
I/O
I/O
I/O
I/O

COSC

28

I/O

FADE

30

I

Analog ground for digital/analog cells in core
High-voltage analog power supply (8.5V to 14V)
5-V Regulated output
5-V Reference output-provided for connection to adjacent VREF terminal.
Bootstrap I/O for left channel, negative high-side FET
Bootstrap I/O for left channel, positive high-side FET
Bootstrap I/O for right channel, negative high-side FET
Bootstrap I/O for right channel, positive high-side FET
I/O for charge/discharging currents onto capacitor for ramp generator triangle wave
biased at V2P5
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.
Negative differential audio input for left channel
Positive differential audio input for left channel
Class-D 1/2-H-bridge negative output for left channel
Class-D 1/2-H-bridge positive output for left channel
A logic high on this pin disables the outputs. A low on this pin enables the outputs.
Not internally connected
Power ground for left channel H-bridge
Power ground for right channel H-bridge
Power supply for left channel H-bridge(tied to pins 22 and 23 internally), not
connected to PVCCR or AVcc
Power supply for left channel H-bridge(tied to pins 14 and 15 internally), not
connected to PVCCR or AVcc
Power supply for right channel H-bridge(tied to pins 46 and 47 internally), not
connected to PVCCL or AVcc
Power supply for right channel H-bridge(tied to pins 38 and 39 internally), not
connected to PVCCL or AVcc
Ground for gain control circuitry. Connect to AGND. If using a DAC to control the
volume, connect the DAC ground to this terminal.
Positive differential audio input for right channel
Negative differential audio input for right channel
Current setting resistor for ramp generator. Nominally equal to 1/8*Vcc
Class-D 1/2-H-bridge negative output for right channel
Class-D 1/2-H-bridge positive output for right channel
Shutdown signal for IC (low=shutdown, high=operational). TTL logic levels with
compliance to Vcc.
Internally generated voltage supply for left channel bootstrap capacitors.
Internally generated voltage supply for right channel bootstrap capacitors.
DC voltage that sets the gain of the amplifier.
Analog reference for gain control section.
2.5-V Reference for analog cells, as well as reference for unused audio input when
using single-ended inputs.

LINN
6
LINP
5
LOUTN 16,17
LOUTP 20,21
MUTE
34
NC
31,32,35
PGNDL 18,19
PGNDR 42,43

I
I
O
O
I
-

PVVCCL 14,15

-

PVVCCL 22,23

-

PVCCR

38,39

-

PVCCR

46,47

-

12

-

3
2
27
44,45
40,41

I
I
I/O
O
O

1

I

REFGND
RINP
RINN
ROSC
ROUTN
ROUTP
SD

VCLAMPL 25
VCLAMPR 36
VOLUME
11
VREF
8

I
I

V2P5

O

4

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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:
Pin Pin
Function
Pin Description
No. Name
This pin lets you adjust the level at which the cycle
Adjust the skipping
1
Adj
skipping process takes place. Shorting this pin to ground,
peak current
permanently disables the skip cycle feature.
By connecting an optocoupler to this pin, the peak current
Sets the peak
2
FB
setpoint is adjusted accordingly to the output power
current setpoint
demand. Skip cycle occurs when FB falls below Vpin1.
This pin senses the primary current and routes it to the
3
CS
Current sense input
internal comparator via an L.E.B.
4
GND
The IC ground
−
5
Drv
Driving pulses
The driver’s output to an external MOSFET.
This pin is connected to an external bulk capacitor of
6
VCC
Supplies the IC
typically 22 F.
This unconnected pin ensures adequate creepage
7
NC
−
distance.
Ensure a clean and Connected to the high−voltage rail, this pin injects a
8
HV
lossless startup
constant current into the VCC capacitor during the startup
sequence
sequence.

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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)

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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.
1.
2.
5.3

FUNCTIONS
White Balance
Geometry

DESIGNATION
Function Key
Function Key

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,

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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
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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.

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5.4 Factory Defaults
Item
Contrast
Brightness
Volume
Balance
Bass
Treble
Color Temperature

Defaults
70%
100%
50%
50%
50%
50%
6500K

Item
Sharpness
OSD H. Position
OSD V. Position
OSD Time Out
OSD Background
OSD PIVOT
Resolution Notice
720x400/640x400

Defaults
33%
50%
50%
15 Sec
On
Off
Enabled
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
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

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
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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
1
2

Test Content
Pattern
Frequency &
Fine Line Moire
Tracking
Contrast/Bright
16 Gray Scale
ness
Horizontal&Vertical
Thickness

3

Boundary

4

RGB
Color
RGB Color Intensities
Performance

5

Screen
Uniformity
Flicker

6

Dead
Pixel/Line

White Screen & Dark
Screen

7

White Balance

White & Black Pattern

Remark
Figure 1
Figure 2
Figure 3
Figure
4,5,6

Should be compliant
Figure 7
with the spec.

& Full White

Fine Line Morie Pattern (Figure1)

Specification
Eliminate visual wavy
noise.
16 gray levels sh should
be distinguishable.
Horizontal and Vertical
position of video should
be adjustable to be
within the screen frame.
Contrast of each R, G,
B, color should be
normal.

The numbers of dead
pixels
should
be Figure 7,8
compliant with the spec.
The screen must have
the pure white and black Figure 9
pattern, no other color.

Gray Scale Pattern (Figure2)

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Horizontal & Vertical Thickness Pattern
(Figure 3)

G. Color Pattern (Figure 5)

Full White Pattern (Figure 7)

R. Color Pattern (Figure 4)

B. Color Pattern (Figure 6)

Dark Screen Pattern (Figure 8)

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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.
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(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.
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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

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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.
JP1：to Power Adapter
P1：to VGA Cable

P3：to Signal Generator

P2：to LPT Cable

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.

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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.

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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.

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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.

JP1： Power Adapter

P3：DVI-DVI Cable

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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VG720

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

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VG720

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Sep3:Key the “Enter” and

write the data

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VG720

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

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VG720

5.7

Packing For Shipping

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VG720

Packing Part List
ITEM
1

DESCRIPITON

PART NUMBER

Q’TY

CARTON

C 44G3778709 1A

1

HANDLE1

50G 600 2

1

HANDLE2

50G 600 3

1

3

PE BAG

45G

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

10

EPS

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

2

76 28 V3

44G3778

1

1

44G3778

2

1

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6. Troubleshooting Flow Chart

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

7.

Item

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

ViewSonic
P/N

Ref. P/N

AUPC980A8P
CBPC780KQ6VWP
KEPC980KB8SMTP
PWPC1742QDV1P
7G 1 S 16
11G 800 1
11G6054 1
12G 434 2
12G 437 1
12G8000 2
15G8004 1
15G8237 1
15G8238 1
15G8239 1
19G6014 2
20G 036 1
23G3178709 4A
23G3178709 6A
33G4915 KR L
33G4916 1
33G4917 KR X
33G4918 KR X
34G1691 KR B
34G1694 KD B
34G1695 KD B
34G1696 KR B
34G1697 KR X
34G1698AKR B
34G1699 KR B
34G1700AKD B
34G1701 KD B
34G1702 KR B
34G1703 KR B
37G 548 1
40G 45760819A
40G 459709 1B
40G 459709 2B
40G 459709 4A

ViewSonic Corporation

Description

Location

Universal
number#

AUPC BOARD
CONVERSINON BOARD
KEY BOARD
POWER BOARD
WOODEN PALLET
SPACER SUPPORT (RCU-3)
PIN CONNECTOR
RUBBER PAD
THER MAL PAD
FOOT PAD
ROLLER PIN
VESA COVER
MAIN FRAME
Kensington bracket
塑料打包固定夹
BASE DIE CASTING
VSC17-LCD FRONT LOGO
BIRD LOGO (E015-006)
FUNCTION BUTTON
POWER LENS
ROLLER
CABLE CLIP
VESA COVER
BASE FRONT TOP
BASE FRONT BOTTOM
BASE
SWIVEL COVER
BEZEL
REAR COVER
COMESTIC TOP
COMESTIC BOTTOM
STAND FRONT
STAND REAR
HINGE
机种标签
CARTON LABEL
S/N LABEL
H/V WARNING LABEL
- 44 –
Confidential - Do Not Copy

Q'ty

1
1
1
1
0.025
1
4
4
1
2
4
1
1
1
0.2
1
1
1
1
0
4
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VG720

39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78

40G 459709 5A
40G 581 26704
40G 58162435A
40G 58170918D
40G 970709 5B
40G457B709 1A
40G581B709 3A
41G7801709 4A
44G3231 15547
44G3778 1
44G3778 2
44G6002 S 14
44G6002 S 15
44G9003210
45G 76 28 V3
45G 77 3
45G 88607
45G 88609 4
45G 88609 B
50G 600 1 W
50G 600 2
50G 600 3
52G 1185 24
52G 1216 A
52G 1219 A
52G 2191 D
52G6019 1
52G6020 1
52G6022 20
52G6025 11907
52G6025 11909
70G1701709 5B
78G 334 5
85G 713 1
89G 173 56507
89G 728GAA902
89G 728HAA902
89G1748GAA 11
89G1748HAA 11
89G1748LAA 11

HI-POT LABEL FOR 17-LCD
唛头纸 FOR CARTON/PALLET
MANUAL P/N LABEL
PALLET LABEL
ID
Hg LABEL
8ms STICKER
QSG
EVA WASHER
EPS(L)
EPS(R)
PAPER PLATE
PAPER PLATE
CORNER PAPER
PE BAG
TRANSPARENT SHEET
PE BAG
EPE COVER
EPE COVER
白色机用打包带
HANDLE1
HANDLE2
TAPE
铝箔胶带
铝箔胶带
美纹胶带
YELLOW TAPE
PROTECT FILM
SMALL TAPE
Mylar sheet top
MYLAR BOTTOM
CD MANUAL
LCD 内置无源喇叭箱（8 欧姆
MAIN SHIELD
AUDIO CABLE
SIGNAL CABLE
SIGNAL CABLE
DVI CABLE
DVI SIGNAL CABLE
DVI CABLE

1
0.01
1.05
0.25
1
1
1
1
1
1
1
0.025
0.025
0.1
1
173
1
1
1
74
1
1
65
1
1
75
5
1
100
1
1
1
1
1
1
0
1
1
0
0

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Confidential - Do Not Copy

VG720

79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118

89G402A18N IS
89G402A18N LS
95G8014 16921
95G8018 30 95
M1G 130 6120
M1G 130 6120
M1G 140 8120
M1G 140 10120
M1G 330 4128
M1G1030 6225
M1G1140 6128
M1G1730 6128
M1G1730 6128
M1G1730 6128
M1G2940 10225
Q1G 130 6 47
Q1G 130 8120
Q1G 130 12120
Q1G 330 6120
Q1G 330 6120
Q1G 330 8120
Q1G1030 10120
Q1G1030 12120
750GLQ70L07 61
750GLQ70L07 62
C 44G3778709 1A
AUPC980A8P
AUPC980A8SMTP
33G3802 4H
33G802414C H
51G6002 1
67G215B471 3H
67G305V100 7N GP
67G305V100 7N GP
67G305V100 7N GP
67G305V100 7N GP
88G 30214K
90G6119 1
AUPC980A8SMTP
56G 616 6

POWER CABLE
POWER CORD
WIRE HARNESS 16P-11P 3
HARNESS 30P-24P 130MM
SCREW
SCREW
SCREW M4X8
SCREW M4X10
SCREW
SCREW M3X6
SCREW
SCREW
SCREW
SCREW
M4*10
SCREW
SCREW
SCREW
SCREW M3X6MM
SCREW M3X6MM
SCREW
M3*10
M3*12
LCD PANEL QD17EL07 Rev1
QD17EL07 17" LCD PANEL
CARTON
AUPC BOARD
AUPC BOARD SMT
WAFER 4P RIGHT ANGLE
WAFER
导热胶
LOW ESR CAP 470UF 16V 8
10UF50V KME50VB10-M-TP5
10UF50V KME50VB10-M-TP5
10UF50V KME50VB10-M-TP5
10UF50V KME50VB10-M-TP5
PHONE JACK 5PIN
HEATSINK
AUPC BOARD SMT
ID TPA3003D2PF BRG4 TQF

0
1
1
1
4
2
4
5
2
1
1
3
4
2
4
3
3
1
4
2
2
4
2
1
0
1
1
1
1
0.2
1
1
1
1
1
1
1

CN603
CN602
C620
C601
C605
C617
C625
CN601

U601

1

- 46 –
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Confidential - Do Not Copy

VG720

119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158

61L0603000
61L0603102
61L0603103
61L0603103
61L0603103
61L0603124
61L0603124
61L0603393
61L0603393
65G0603101
65G0603101
65G0603102
65G0603102
65G0603102
65G0603102
65G0603102
65G0603102
65G0603103
65G0603103
65G0603103
65G0603103
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603105
65G0603105
65G0603105
65G0603105
65G0603105
65G0603105
65G0603105
65G0603105
65G0603221
71G 56G301
71G 56G301
71G 56G301
71G 56G301

31
31
32
32
32
32
32
32
32
32
32
32
12
12
12
12
12
12
12
12
12
12
12
12
12
12
32
EA
EA
EA
EA

CHIPR 0OHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIP 120KOHM 1/10W
CHIP 120KOHM 1/10W
39K OHM 1/10W
39K OHM 1/10W
CHIP 100P 50V NPO
CHIP 100P 50V NPO
CHIP 1000PF 50 X7R
CHIP 1000PF 50 X7R
CHIP 1000PF 50 X7R
CHIP 1000PF 50 X7R
CHIP 1000PF 50 X7R
CHIP 1000PF 50 X7R
0.01UF 50V X7R
0.01UF 50V X7R
0.01UF 50V X7R
0.01UF 50V X7R
MLCC
MLCC
MLCC
MLCC
MLCC
MLCC
CHIP CAP 1UF.
CHIP CAP 1UF.
CHIP CAP 1UF.
CHIP CAP 1UF.
CHIP CAP 1UF.
CHIP CAP 1UF.
CHIP CAP 1UF.
CHIP CAP 1UF.
220PF/50V X7R
CHIP BEAD
CHIP BEAD
CHIP BEAD
CHIP BEAD

R602
R608
R601
R609
R610
R604
R607
R611
R612
C612
C615
C602
C603
C604
C630
C631
C632
C607
C608
C626
C629
C606
C609
C618
C621
C627
C628
C610
C611
C613
C614
C616
C619
C623
C624
C622
FB602
FB604
FB610
FB612

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

- 47 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198

71G 57G301 EA
71G 57G301 EA
71G 57G601
71G 57G601
71G 57G601
71G 57G601
715G1566 1
CBPC780KQ6VWP
AIC780KQ6VWP
33G801714H H
33G801724A H
33G8027 12
33G8027 16
40G 45762412B
51G6002 1
67G215L101 4N
67G215L101 4N
67G215L101 4N
67G309V100 3
67G309V100 3
67G309V109 3
67G309V479 3
67G309V479 3
88G 35315F H
88G 35315F HJ
88G 35424F H
90G6250 1 GP
93G 22 53
AIC780KQ6VWP
56G 562108
56G 563 7
56G 643 6
56G1133 34
56G1133 34
56G1133 63QA1
56G1133 74QA1
56G113356A
57G 417 4
57G 417 4
57G 417 4

CHIP BEAD 600 OHM 1206
CHIP BEAD 600 OHM 1206
贴片磁珠
贴片磁珠
贴片磁珠
贴片磁珠
AUDIO
CONVERSINON BOARD
MAIN BOARD
PIN2*7
PIN 24P 2.0MM RIGHT ANG
WAFER 2*6P 2.0MM R/A
WAFER 16PIN 2.0MM DIP
CBPC LABEL
导热胶
LOW ESR EC 100UF 25V NC
LOW ESR EC 100UF 25V NC
LOW ESR EC 100UF 25V NC
Electrolytic CAP
Electrolytic CAP
1UF +-20% 16V
4.7UF +-20% 16V
4.7UF +-20% 16V
D-SUB 15PIN
D-SUB 15PIN
DVID CONN 24P FEMALE 90
散热片
CRYSTAL 14.31818MHZ HCMAIN BOARD
TSUM56AK-LF PQFP-100
AIC1084-33PM TO-263
IC MICROPROCESSOR MAX81
IC M24C02-WMN6TP
IC M24C02-WMN6TP
PM25LV010-25SCE
SST25VF010A-33-4C-SAE S
24LC16B/SNG SOIC-8PIN
PMBS3904/PLILIPS
PMBS3904/PLILIPS
PMBS3904/PLILIPS

FB605
FB606
FB601
FB607
FB608
FB609

1
1
1
1
1
1
1

X401

1
1
1
1
1
1.03
0.2
1
1
1
1
1
1
1
1
1
0
1
1
1

U401
U702
U406
U404
U405
U402
U402
U403
Q402
Q404
Q701

1
1
1
1
1
1
0
1
1
1
1

$
$
$
$
$

CN404
CN101
CN701
CN403

C707
C710
C712
C408
C717
C705
C403
C702
CN405
CN405
CN406

- 48 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238

57G 417 4
57G 417 4
57G 417 6
57G 417 6
57G 417 17 T
57G 763 1
61L0603000
61L0603000
61L0603000
61L0603000
61L0603000
61L0603000
61L0603000
61L0603000
61L0603000
61L0603100
61L0603100
61L0603100
61L0603100
61L0603100
61L0603100
61L0603100
61L0603100
61L0603100 1F
61L0603100 1F
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101
61L0603101

PMBS3904/PLILIPS
PMBS3904/PLILIPS
PMBS3906 PNP
PMBS3906 PNP
PZT2907A SOT-223
AO3401L
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 0OHM +-5% 1/10W
CHIPR 10 OHM 1/10W
CHIPR 10 OHM 1/10W
CHIPR 10 OHM 1/10W
CHIPR 10 OHM 1/10W
CHIPR 10 OHM 1/10W
CHIPR 10 OHM 1/10W
CHIPR 10 OHM 1/10W
CHIPR 10 OHM 1/10W
CHIP 1KOHM 1/10W 1%
CHIP 1KOHM 1/10W 1%
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W
CHIPR 100OHM +-5% 1/10W

Q703
Q706
Q401
Q403
Q702
Q704
FB410
FB411
FB412
R419
R421
R431
R432
R720
R721
R462
R463
R464
R465
R466
R467
R468
R469
R478
R479
R411
R418
R420
R427
R428
R429
R441
R442
R443
R445
R453
R454
R455
R456
R458

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

- 49 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278

61L0603101
61L0603102
61L0603102
61L0603102
61L0603102
61L0603102
61L0603102
61L0603102
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603103
61L0603121
61L0603121
61L0603150 1F
61L0603202
61L0603203
61L0603222
61L0603222

CHIPR 100OHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 1KOHM +-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 10KOHM+-5% 1/10W
CHIPR 120 OHM 1/10W
CHIPR 120 OHM 1/10W
CHIP 1.5KOHM 1/16W 1%
CHIPR 2KOHM+-5%1/10W
CHIPR 20KOHM +-5% 1/10W
CHIPR 2.2KOHM+-5%1/10W
CHIPR 2.2KOHM+-5%1/10W

R704
R430
R446
R447
R470
R476
R477
R701
R406
R408
R412
R413
R415
R416
R424
R425
R426
R450
R451
R452
R457
R459
R460
R461
R471
R484
R485
R487
R708
R711
R714
R717
R727
R409
R414
R480
R703
R417
R448
R449

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

- 50 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318

61L0603223
61L0603390
61L0603392
61L0603392
61L0603471
61L0603472
61L0603472
61L0603472
61L0603472
61L0603472
61L0603472
61L0603510
61L0603513
61L0603560
61L0603560
61L0603560
61L0603750
61L0603750
61L0603750
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104

0F

32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32

CHIPR 22K OHM +-5% 1/10
390OHM +-1%
CHIP 3.9K OHM 1/10W
CHIP 3.9K OHM 1/10W
CHIPR 470OHM+-5%1/10W
CHIP 4.7KOHM +-5% 1/10
CHIP 4.7KOHM +-5% 1/10
CHIP 4.7KOHM +-5% 1/10
CHIP 4.7KOHM +-5% 1/10
CHIP 4.7KOHM +-5% 1/10
CHIP 4.7KOHM +-5% 1/10
CHIP 51OHM 5% 1/10W
CHIP 51K OHM
CHIPR 56 OHM +-5% 1/10W
CHIPR 56 OHM +-5% 1/10W
CHIPR 56 OHM +-5% 1/10W
CHIPR 75OHM+-5%1/10W
CHIPR 75OHM+-5%1/10W
CHIPR 75OHM+-5%1/10W
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R

R405
R403
R474
R475
R437
R422
R423
R705
R707
R712
R725
R702
R723
R434
R435
R436
R438
R439
R440
C401
C404
C405
C406
C407
C409
C410
C411
C412
C413
C414
C415
C416
C417
C419
C420
C422
C424
C425
C426
C427

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

- 51 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358

65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603104
65G0603220
65G0603220
65G0603221
65G0603330
65G0603473
65G0603473
65G0603473
65G0603473
65G0603473
65G0603473
65G0603473
65G0805105
71G 56Z601
71G 56Z601
71G 56Z601
71G 56Z601

32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
37

CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
CHIP 0.1UF 50V X7R
Chip Cap 22PF
Chip Cap 22PF
220PF/50V X7R
CHIP 33PF 50V NPO
CHIP 47NF 50V X7R
CHIP 47NF 50V X7R
CHIP 47NF 50V X7R
CHIP 47NF 50V X7R
CHIP 47NF 50V X7R
CHIP 47NF 50V X7R
CHIP 47NF 50V X7R
CHIP 1UF 50V Y5V
2.0X1.2 100M=600OHM
2.0X1.2 100M=600OHM
2.0X1.2 100M=600OHM
2.0X1.2 100M=600OHM

C428
C429
C430
C439
C440
C441
C444
C445
C446
C447
C448
C449
C450
C451
C452
C453
C454
C706
C709
C711
C713
C714
C715
C718
C421
C423
C443
C442
C432
C433
C434
C435
C436
C437
C438
C708
FB401
FB402
FB403
FB404

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

- 52 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398

71G
71G
71G
71G
71G
71G
71G
71G
71G
71G
71G
71G
71G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G
93G

56Z601
56Z601
56Z601
56Z601
56Z601 M
56Z601 M
56Z601 M
56Z601 M
56Z601 M
56Z601 M
56Z601 M
56Z601 M
59B121
39147SEM
39147SEM
39147SEM
39147SEM
39149
39149
39149
39149
39149
39149
64 42 P
64 42 P
6432P
6432P
6433P
6433P
6433P
6433P
6433P
6433P
6433P
6433P
6433P
6433P
6433P
39S 45 T
39S 45 T

2.0X1.2 100M=600OHM
2.0X1.2 100M=600OHM
2.0X1.2 100M=600OHM
2.0X1.2 100M=600OHM
CHIP BEAD 0805 600OHM
CHIP BEAD 0805 600OHM
CHIP BEAD 0805 600OHM
CHIP BEAD 0805 600OHM
CHIP BEAD 0805 600OHM
CHIP BEAD 0805 600OHM
CHIP BEAD 0805 600OHM
CHIP BEAD 0805 600OHM
贴片磁珠
ZMM5V6
ZMM5V6
ZMM5V6
ZMM5V6
ZENER MLL5232B BY FULL
ZENER MLL5232B BY FULL
ZENER MLL5232B BY FULL
ZENER MLL5232B BY FULL
ZENER MLL5232B BY FULL
ZENER MLL5232B BY FULL
BAV70 DIODE
BAV70 DIODE
LL4148 MINI-MELF/LL-34
LL4148 MINI-MELF/LL-34
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
BAV99 SOT-23
RLZ36B ZENER DIODE
RLZ36B ZENER DIODE

FB405
FB406
FB407
FB408
FB401
FB402
FB403
FB404
FB405
FB406
FB407
FB408
FB409
D414
D415
D416
D426
D406
D408
D409
D410
D411
D412
D407
D413
D701
D702
D403
D404
D405
D417
D418
D419
D420
D421
D422
D423
D424
D401
D402

1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

- 53 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438

93G 39S 45 T
93G1004 4
715G1558 1 2
KEPC980KB8SMTP
33G803411C
77G 604 2 TO
77G 604 2 TO
77G 604 2 TO
77G 604 2 TO
77G 604 2 TO
77G 604 2 TO
77G 604 2 TO
77G 604 2 TO
81G 14501 KT
715G1602 1
PWPC1742QDV1P
PW1742QDV1SMTP
33G8021 2D U
33G8021 2D U
33G8021 2D U
33G8021 2D U
33G8021 2D AC
33G8021 2D AC
33G8021 2D AC
33G8021 2D AC
33G8029 3A
40G 45762412B
51G
6 4503
56G 139 3
56G 139 3A
57G 417 11
57G 417 11
57G 761 7
57G 761 7
61G 58080 WT
61G152M398 64
63G 10747410S
63G210J3342B2
63G211J334 AB
65G 2K152 5A

RLZ36B ZENER DIODE
SCHOTTKY DIODE 1A 40V S
MAIN BOARD
KEY BOARD
WAFER 1.0MM SMT 11P
TACT SWITCH
TACT SWITCH
TACT SWITCH
TACT SWITCH
TACT SWITCH
TACT SWITCH
TACT SWITCH
TACT SWITCH
KTL-HKBGE33B-TRB
KEPC
POWER BOARD
MAIN BOARD FOR SMT
CON.2PR/A
CON.2PR/A
CON.2PR/A
CON.2PR/A
WAFER
WAFER
WAFER
WAFER
WAFER 3.96MM
CBPC LABEL
RTV 胶
PC123FY2 BY SHARP
PC123Y22FZOF
KTC5103L-Y-U/P IPAK
KTC5103L-Y-U/P IPAK
TRANSISTOR KTD1691/P
TRANSISTOR KTD1691/P
NTCR
RES.
0.47UF +-10% 250VAC
0.33uF 250V PMS TAIYANG
0.33UF 5% 160V
1500PE 10% Y5P 2KV

D425
D704

1
1
1

$ CN001
SW001
SW002
SW003
SW004
SW005
SW006
SW007
SW008
LED001

1
1
1
1
1
1
1
1
1
1
1

$
$
$
$
$
$
$
$
$
$

1
1
1
1
1
0
0
0
0
1
1
2
0
1
1
1
0
0
1
1
1
0
1
1

CN201
CN202
CN203
CN204
CN201
CN202
CN203
CN204
CN901

IC902
IC902
Q206
Q207
Q206
Q207
NR901
R918
C903
C221
C221
C905

- 54 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476

65G 3J1206EM
65G 3J1206EM
65G 3J1206EM
65G 3J1206EM
65G 3J1206ET
65G 3J1206ET
65G 3J1206ET
65G 3J1206ET
65G305M1022BJ
65G305M1022BJ
65G305M1022EM
65G305M1022EM
65G306M1022BM
GP
65G306M1022BP
65G306M2222BM
GP
65G306M2222BP
67G215H102 3N
67G215L101 4N
67G215L102 3N
67G215L102 3R
67G215L102 4N
67G215L102 4N
67G215L102 4R
67G215L102 4R
67G215L470 4N
67G215L471 4N
67G215L471 4N
67G215L471 4R
67G215L471 4R
67G215P102 3K
67G215P102 4K
67G215P102 4K
67G215P471 3K
67G215P471 4K
67G215P471 4K
67G215S10115K
67G215S10115N
67G215V102 3N GP

12PF 5% SL 3KV
12PF 5% SL 3KV
12PF 5% SL 3KV
12PF 5% SL 3KV
12PF 5% SL 3KV
12PF 5% SL 3KV
12PF 5% SL 3KV
12PF 5% SL 3KV
1000PF Y2 400V
1000PF Y2 400V
1000pF Y2 250V
1000pF Y2 250V

MURATA
MURATA
MURATA
MURATA
TDK
TDK
TDK
TDK
20% BY
20% BY
20% BY
20% BY

J
J
M
M

C211
C212
C213
C214
C211
C212
C213
C214
C901
C902
C901
C902

1
1
1
1
0
0
0
0
0
0
1
1

Y1.CAP.001UF 250VAC MUR

C935

1

1000PF 400VAC/250VAC Y1

C935

0

2200PF +-20% 250V AC

C900

1

2200PF Y1 400 20% BY UK
KY16VB1000M-1 10*20
LOW ESR EC 100UF 25V NC
KY16VB1000M-1 10*20
LOW ESR 1000UF +-20% 16
LOW ESR 1000UF 25V
LOW ESR 1000UF 25V
1000UF/25V
1000UF/25V
47UF/25V
470UF25V KY25VB470-M-L
470UF25V KY25VB470-M-L
470UF/25V
470UF/25V
LOW ESR EC 1000UF 16V
LOW ESR EC 1000UF 25V
LOW ESR EC 1000UF 25V
LOW ESR EC 470UF 16V
LOW ESR EC 470UF 25V
LOW ESR EC 470UF 25V
LOW ESR EC 100uF 450V
1000/450PAG450VB100M-L
KY10VB1000M-L10*16

C900
C924
C906
C924
C924
C923
C931
C923
C931
C909
C203
C925
C203
C925
C924
C923
C931
C926
C203
C925
C904
C904
C924

0
0
1
0
1
0
0
1
1
1
0
0
1
1
0
0
0
0
0
0
1
0
0

- 55 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516

67G215V102 3R GP LOW E.S.R 100UF +-20% 1
67G215Y1014KT
LOW ESR EC 100UF 25V
67G215Y4704KT
LOW ESR EC 47UF 25V
67G215Y471 3N
470UF 16V KY16VB470M-L
67G215Y4713NV
KY16VB470M-CC3 8*15MM
67G215Y4713RV
LOW E.S.R 470UF +-20% 1
73G 174 64 L
LINE FILTER LF-004057-1
73G 174 64 LS
LINE FILTER
73G 174 64 YS
LINE FILTER
73G 253 91 H
阻流圈
73G 253 91 H
阻流圈
73G 253 91 L
CHOKE BY LI TA
73G 253 91 L
CHOKE BY LI TA
73G 253 91 LS
CHOKE COIL
73G 253 91 LS
CHOKE COIL
73G 253166 L
CHOKE
73G 253166 LS
CHOCK COIL
73G 253166 YS
CHOKE
73L 174 50 LH
LINE FILTER
73L 174 50LSH
LINE FILTER
80GL17T 28 DN
TRANSFORMER
80GL17T 28 DN
TRANSFORMER
80GL17T 28 YS
X'FMR YAO SHENG
80GL17T 28 YS
X'FMR YAO SHENG
80GL17T 29 L
X'FMR PT-004046
80GL17T 29 V
XFMR
80GL17T 29 LS
POWER TRANS
93G 50460 13
KBP206G 2A 600V
93G 50460502
BRIDGE KBP206G 2A 800V
93G1100 1052T
BA159GPT DO-41 DIODE 1A
95G8014 12 35
WIRE HARRNESS
705G 780 5720P
D921/D922 ASS'Y
705G 780 5721P
Q901 ASS'Y
705G 780 5722P
R908 ASS'Y
705G 780 5725P
CN901 ASS'Y
705G 780 5733P
Q203 ASS'Y
PW1742QDV1SMTP
MAIN BOARD FOR SMT
PW1742QDV1AIP
PWPC BOARD FOR AI
56G 379 54
NCP1203D60R2G SOIC-8 IC
56G 608 1
TL1451ACD SOIC-16

C924
C906
C909
C926
C926
C926
L902
L902
L902
L903
L904
L903
L904
L903
L904
L201
L201
L201
L901
L901
PT201
PT202
PT201
PT202
T901
T901
T901
DB901
DB901
D901
CN902

0
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
1
1
1
0
0
1
0
1
1
1
1
1
1
1
1
1
1

IC901
IC201

- 56 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556

57G 417 4
57G 417 6
57G 417 12
57G 417 13
57G 760 4
57G 760 5
57G 760 4C
57G 760 5C
61L0805000
61L0805000
61L0805101
61L0805102
61L0805102
61L0805102
61L0805103
61L0805103
61L0805123
61L0805123
61L0805123
61L0805163
61L0805203
61L0805220
61L0805221
61L0805221
61L0805222
61L0805240
61L0805240
61L0805240
61L0805330
61L0805360
61L0805362
61L0805471
61L0805471
61L0805472
61L0805472
61L0805473
61L0805510
61L0805623
61L0805680
61L0805681

T
T

1F
1F
1F
2F
1F

2F

PMBS3904/PLILIPS
PMBS3906 PNP
2N3904S-RTK/PS SOT-23
2N3906S-RTK/PS SOT-23
DTA144WKA
DTC144WKA
RT1P44HC-T112-1 SC-59BY
RT1N44HC-T112-1 SC-59BY
Chip Resistors 0OHM
Chip Resistors 0OHM
CHIPR 100OHM+-5%1/8W
CHIPR 1K OHM +-5% 1/8W
CHIPR 1K OHM +-5% 1/8W
CHIPR 1K OHM +-5% 1/8W
CHIPR 10KOHM+-5%1/8W
CHIPR 10KOHM+-5%1/8W
CHIP 12K OHM 1/8W
CHIP 12K OHM 1/8W
CHIP 12K OHM 1/8W
CHIP 16KOHM 1/8W
CHIPR 20KOHM +-5% 1/8W
CHIP 22OHM 5% 1/8W
CHIPR 220 OHM +-5% 1/8W
CHIPR 220 OHM +-5% 1/8W
CHIPR 2.2K OHM +-5% 1/8
CHIPR 2.4KOHM +-1% 1/8W
CHIPR 2.4KOHM +-1% 1/8W
CHIPR 2.4KOHM +-1% 1/8W
CHIP 33KOHM 1/8W/1%
CHIP 3.6KOHM 1/8W 1%
CHIP 3.6KOHM 1/8W
CHIPR 470 OHM +-5% 1/8W
CHIPR 470 OHM +-5% 1/8W
CHIPR 4.7K OHM +-5% 1/8
CHIPR 4.7K OHM +-5% 1/8
CHIPR 47K OHM +-5% 1/8W
CHIP 51KOHM 1/8W 1%
CHIPR 62K OHM +-5% 1/8W
CHIP 68OHM 1/8W
CHIP 680OHM 1/8W

Q204
Q205
Q204
Q205
Q202
Q201
Q202
Q201
R208
R209
R912
R924
R931
R932
R207
R917
R206
R214
R231
R205
R919
R915
R202
R916
R910
R201
R203
R933
R929
R930
R911
R204
R230
R213
R914
R210
R232
R212
R909
R229

1
1
0
0
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

- 57 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596

61L0805753
61L1206000
61L1206000
61L1206332
61L1206332
61L1206332
61L1206334
61L1206334
61L1206334
65G0805102
65G0805104
65G0805104
65G0805104
65G0805104
65G0805104
65G0805104
65G0805104
65G0805104
65G0805105
65G0805105
65G0805105
65G0805331
65G0805471
65G0805474
65G0805474
93G 60264
93G 6432S
93G 6432S
93G 6432S
93G 6432S
93G 6432V
93G 6432V
93G 6432V
93G 6432V
93G 39S 8
93G 39S 25
93G 39S 25
93G 39S 38
93G 39S 40
93G 39S 44

32
22
22
22
22
32
32
32
32
22
22
22
31
31
22
22

T
T
T
T
T
T

75K 1/8W
CHIPR 0OHM+-5% 1/4W
CHIPR 0OHM+-5% 1/4W
CHIP 3.3KOHM 5% 1/4W
CHIP 3.3KOHM 5% 1/4W
CHIP 3.3KOHM 5% 1/4W
330K 1/4W
330K 1/4W
330K 1/4W
CHIP 1000PF 50V X7R 080
CHIP 0.1UF 25VX7R 0805
CHIP 0.1UF 25VX7R 0805
CHIP 0.1UF 25VX7R 0805
CHIP 0.1UF 25VX7R 0805
CHIP 0.1UF 50V X7R 0805
CHIP 0.1UF 50V X7R 0805
CHIP 0.1UF 50V X7R 0805
CHIP 0.1UF 50V X7R 0805
CHIP 1UF 25V X7R 0805
CHIP 1UF 25V X7R 0805
CHIP 1UF 25V X7R 0805
330PF 50V NPO
CHIP 470PF 50V NPO
CHIP 0.47UF 25V Y5V 080
CHIP 0.47UF 25V Y5V 080
B340A DO-214AC
1N4148W DIODE
1N4148W DIODE
1N4148W DIODE
1N4148W DIODE
DIODE LL4148 GS08
DIODE LL4148 GS08
DIODE LL4148 GS08
DIODE LL4148 GS08
RLZ11B LLDS
RLZ5.1B ROHM
RLZ5.1B ROHM
PTZ9.1B ROHM
RLZ13B ROHM
RLZ18B LLDS

R913
F902
R925
R903
R904
R905
R900
R901
R902
C912
C201
C202
C204
C208
C907
C927
C928
C929
C205
C210
C223
C207
C911
C222
C932
D201
D210
D903
D923
D924
D210
D903
D923
D924
ZD201
ZD902
ZD905
ZD903
ZD904
ZD901

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1

- 58 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636

93G3004 4
PW1742QDV1AIP
6G 31502
71G 55 9 T
84G 56 1
93G1020 752T
715G1492 1
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
95G 90 23
61G 17210252T
61G 17210252T
61G 17210252T
61G 17210252T
61G 17218252T
61G 17218252T
61G 17218252T
61G 17218252T
61G 17256152T
61G175L47052T
61G175L47052T
65G517K102 5T
67G 2151007NT
67G 215330 3T
67G215Y1007KT
93G 64 1152T

DIODE RB050L-40
PWPC BOARD FOR AI
1.5MM RIVET
铁氧体磁珠
FUSE 2A 250V BY WICKMAN
UF4003PT DO-41 DIODE 1A
PWPC
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
TINCOATEDCOPPER
1KOHM 5% 1/4W
1KOHM 5% 1/4W
1KOHM 5% 1/4W
1KOHM 5% 1/4W
1.8KOHM 5% 1/4W
1.8KOHM 5% 1/4W
1.8KOHM 5% 1/4W
1.8KOHM 5% 1/4W
560OHM 5% 1/4W
47OHM +-5% 1/2W
47OHM +-5% 1/2W
1000PF 10% Y5P 500V
10UF 50V
33UF +-20% 50V 105℃ LO
LOW ESR EC10UF 50V
DIODE 1N4148 DO-35

D201

1
16
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1

J914
F901
D902
J900
J901
J902
J903
J906
J907
J908
J909
J910
J911
J912
J915
J916
J917
J918
J919
J921
R225
R226
R227
R228
R221
R222
R223
R224
R923
R921
R922
C922
C908
C209
C908
D202

- 59 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676

93G 64 1152T
DIODE 1N4148 DO-35
93G 64 1152T
DIODE 1N4148 DO-35
93G 64 1152T
DIODE 1N4148 DO-35
93G 64 1152T
DIODE 1N4148 DO-35
93G 64 1152T
DIODE 1N4148 DO-35
93G 64 1152T
DIODE 1N4148 DO-35
93G 64 1152T
DIODE 1N4148 DO-35
56G 158 10 T
IC AZ431AZ-AE1 TO-92
56G 158 12
KIA431A-AT/P TO-92 IC
57G 419 PP T
2PC945P
57G 420 PP T
TRANSISTOR 2PA733P
65G517K102 5T
1000PF 10% Y5P 500V
705G 780 5720P
D921/D922 ASS'Y
51G 200 1
散热油
90G6240 2
HEAT SINK
93G 60236
FMB-26L TO-220 DIODE
93G 60238
DIODE 10A 150V FCH10A15
93G 60239
DIODE FME-210B TO-220
93G1506 2
DIODE 15A 60V FMW-2156
M1G1730 8128
SCREW
705G 780 5721P
Q901 ASS'Y
51G 200 1
散热油
57G 667 30
2SK2645-54MR TO-220F
57G 724 11
STP9NK65ZFP TO-220FP MO
90G6240 1
HEAT SINK
M1G1730 8128
SCREW
705G 780 5722P
R908 ASS'Y
61G152M10458G
100K OHM 5% 2W
96G 29 6
SHRINK TUBE UL/CSA
705G 780 5725P
CN901 ASS'Y
87G 501 7 RF GP AC SOCKET
95G 900584
WIRE HARNESS
95G8021 3 11
HARNESS 100M
96G 29 6
SHRINK TUBE UL/CSA
705G 780 5733P
Q203 ASS'Y
15G6284 1
PLATE
51G 200 1
散热油
57G 763 12
AOU401L TO-251
90G6259 1
HEAT SINK
AM1G1730 6128
SCREW

D203
D204
D205
D206
D207
D208
D209
IC903
IC903
Q903
Q902
C921

1
1
1
1
1
1
1
0
1
1
1
1
2
1
1
0
1
0
2

D922
D921
D921
D922

2
1
0
1
1

Q901
Q901

R908

1
1
1
1
1
1
1
0.2
1
1
1

Q203

- 60 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

8. Exploded Diagram And Spare Parts List

- 61 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

- 62 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

- 63 –
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.
- 64 –
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）
- 65 –

ViewSonic Corporation

Confidential - Do Not Copy

VG720

（Picture 9）

（Picture 10）

（Picture 11）

（Picture 12）

（Picture 13）
- 66 –

ViewSonic Corporation

Confidential - Do Not Copy

VG720

（Picture 14）

（Picture 15）

（Picture 16）

（Picture 17）
（Picture 18）

（Picture 19）

（Picture 20）

- 67 –
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）
- 68 –

ViewSonic Corporation

Confidential - Do Not Copy

VG720

（Picture 7）

（Picture 8）

（Picture 9）

（Picture 10）

（Picture 11）

（Pictures 12）
- 69 –

ViewSonic Corporation

Confidential - Do Not Copy

VG720

（Picture 13）

（Picture 14）

（Picture 15）

（Picture 16）

（Picture 17）

（Picture 17）

- 70 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

10. Block Diagram

Flash
Scaler TSUM56AK
(Include:ADC,OSD,MCU etc)

- 71 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

11. Schematic Diagram
Power
9

9

9

NC

TP

1
2
3

100uF/25V

5
4

8
7
6

8
7
6
5
4

5
4

5
4

9

TP

9

51

TP

C51
1UF
1UF

R32
0
X

Q4
X
MMBT3904

R33
X
4.7K

R29
X
1K

4.7uF/16V

C32
N.C
1uF

D702

R708

0.1uF

+5V

1
3
5
7
9
11

10K
BL_ON
BL_ADJ
+12V
GND
+5V
GND

2
4
6
8
10
12

100

C710
+

0.1uF

100uF/25V

R710

NC

10K

C711
R712

0.1uF

4.7K

1/16W

+5V

1/16W
on_BACKLIGHT

4

3,4

PC5V

VCC5V

3,4

+5V

R709

10

1/16W

1/16W

Q701

Adj_BACKLIGHT

C708

PMBS3904

R707
4.7K 1/16W

1uF

D704

D703
BAT54C

SMAL140

1

VLCD

R717
10K

10K
1/16W

NC

R723 51K
R725

4

on_Panel

NC

4.7K

1/16W
C718
0.1uF

Q706
PMBS3904

R721
Q704
AO3401L

1/16W

0

1/16W

0.1uF

R718

R729

R719

NC/10K

NC/10K

NC/10K

4
+

C717
10uF/16V

R727
10K

1/16W

on_Panel_12V
C720

Q707

+5V

0

C714

100uF/25V 0.1uF

1/16W

+12V
R730
0

Q705
AO3401L

1/16W

R731
NC

C716

0.1uF
PMBS3904

NC/0.1uF

5

C719

R728

NC/10uF/16V

NC/4K7

+

Title

TSUM57AK
Size
B
Date:

- 72 –
ViewSonic Corporation

C712
+

VLCD_12V

R724 51K
R726 NC/4K7

C715

R713
NC

12/21 MODIFY
+12V

NC

VCC3.3

ADJ

R720

VLCD_12V

R722

2
4

0.1uF

+3V3

R715

1/16W

+5V

+5V

VLCD 5
+5V
R716

VCC3.3
VOUT
VOUT

For RSDS and Panel VCC=12V

+3V3

R714

VIN

AIC1084-33PM

C713

+5V

TO-263

U702
3

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.
+3V3

1/16W

3

1/16W

0

+5V

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).

R701

R705 4.7K

Recommond to used "Blue" parts circuit
for VCC1.8V if you want to suppoert DDC
PC5V 3
function when system power off

Q703
PMBS3904
R732

R706 NC

VCC3.3

R711

+5V

1K

1/16W

1/16W

CONN

C709

4

1/16W

R704

+5V

2

3,4

GND
GND
+12V
GND
+5V
GND

100uF/25V
+5V

4 CN701

2K

1

+12V
C707
+

VCC3.3

R703

CHT2907

+
1uF/16V

+12V

4

1N4148

C705
+5V

C706

E

R31
47
4K7

VCC1.8

1N4148

B

Q702
BL_ADJ
P W M
D C

VCC1.8

+ C702

C

R31
4.7K
4.7K

1/16W

5
4

5
4

D701
BL_ADJ(DC)
0V ~ 3.3V
0V ~ 5V

4

R702

8
7
6

9

C704

+

VCTRL

H3

1
2
3

C703

H2

1
2
3

4

1

NC

VO

H1
+3V3

1
2
3

C701

+3V3

2

8
7
6

VO
GND

VI

8
7
6

NC/LT1117-18

1
2
3

SOT-223

3

8
7
6

U701

+5V

1
2
3

11.1

Confidential - Do Not Copy

VG720

Document Number

Rev

A

POWER
Monday , May 30, 2005

Sheet

1

of

5

4

11.2 Scaler
VDVI

VMPLL VPLL

AVDD VDDP

VDDC

VCC1.8 FB401 VDDC
VCC3.3

DDCA_SDA
DDCA_SCL

39
40
42
43
45
46
48
49
36
37

3 R+
3 R3 G+
3 G3 B+
3 B3 CLK+
3 CLKDDCD_SDA
DDCD_SCL

3
3

R403

62

C401
0.1uF

R486

19

C421

22pF

32

ESP
OSP
GPO0
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6

XIN

X401
14.318MHz
C423

33

22pF

XOUT

GPIO_P22
GPIO_P23
GPIO_P03

VCC3.3
R407
R410

R415

+5V
10K

1

VCC

GND

U406
3

RST

102
104

NC
NC

1/16W

GPIO_P16
GPIO_P15
PWM2/GPIO_P24
GPIO_P27/PWM1

MODE[0]
MODE[1]

GPIO_P16
PWM1/GPIO_P25

R416
10K

600 OHM

12
97
117
68
CLKBP/LVBCKP/LCK_ODD
CLKBN/LVBCKM/LDE
NC/LVB2P/NC
NC/LVB2M/NC
BB1P/LVB1P/BB2
BB1N/LVB1M/BB3
BB2P/LVB0P/BB4
BB2N/LVB0M/BB5
BB3P/NC/BB6
BB3N/NC/BB7

RST

1/16W

1/16W NC

CLKAP/LVB3P/LHSY NC

RSDS/LVDS/TTLCLKAN/LVB3M/LVSY NC

SDO
SCZ
SCK
SDI

R487
10K

VDDC
VDDC
VDDC
VDD_OTP

14
67
95
103
115

60

TSUM57AK

U402

R404
10K

GB1P/NC/GB2
GB1N/NC/GB3
GB2P/NC/GB4
GB2N/NC/GB5
GB3P/NC/GB6
GB3N/NC/GB7

REFM

2
70
VDD
SDO
1
71
HOLD#
CE#
6
72
WP#
SCK
5
73
VSS
SDI
WP
SST25VF010-20-4C-SAE

C418
+

VDDP
VDDP
VDDP
VDDP
VDDP

4
34

52

RB1P/NC/RB2
RB1N/NC/RB3
RB2P/NC/RB4
RB2N/NC/RB5
RB3P/NC/RB6
RB3N/NC/RB7

REFP

61

8
7
3
4

NC

0.1uF

10uF/16V NC

BA1P/NC/BA2
BA1N/NC/BA3
BA2P/NC/BA4
BA2N/NC/BA5
BA3P/NC/BA6
BA3N/NC/BA7

REXT

390 1%

VCC3.3

GA1P/NC/GA2
GA1N/NC/GA3
GA2P/NC/GA4
GA2N/NC/GA5
GA3P/LVA3P/GA6
GA3N/LVA3M/GA7

RX2P
RX2N
RX1P
RX1N
RX0P
RX0N
RXCKP
RXCKN
DDCD_SDA
DDCD_SCL

51

AVDD

VCC3.3
C417

RIN0P
RIN0N
GIN0P
GIN0N
SOGIN0
BIN0P
BIN0N
HSY NC0
VSY NC0
DDCA_SDA
DDCA_SCL

VCTRL

NC/LVACKP/NC
NC/LVACKM/NC
RA1P/LVA2P/RA2
RA1N/LVA2M/RA3
RA2P/LVA1P/RA4
RA2N/LVA1M/RA5
RA3P/LVA0P/RA6
RA3N/LVA0M/RA7

GPIO_P17/SAR0
GPIO_P00/SAR1
GPIO_P01/SAR2
GPIO_P02/SAR3

1/16W

2

GPIO_P06
GPIO_P07
PWM0/GPIO_P26
GPIO_P13
GPIO_P14

ASM810MEURF-T

Re s e t
Cir cuit
GND
GND
GND
GND
GND
GND

DDCROM_SCL
DDCROM_SDA

11

VCTRL

107
108
109
110
111
112
113
114

PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7

98
99
100
101
105
106

PA8
PA9
PA10
PA11
PA12
PA13

89
90
91
92
93
94

PA14
PA15
PA16
PA17
PA18
PA19
PB0
PB1
PB2
PB3
PB4
PB5

2
3
5
6
7
8

PB6
PB7
PB8
PB9
PB10
PB11

118
119
120
121
122
123
124
125
126
127
128
1

PB12
PB13
PB14
PB15
PB16
PB17
PB18
PB19
PB20
PB21
PB22
PB23

PA[8..13]

VCC3.3

PB[0..5]

PB[6..11]

VCC3.3

FB404 VDVI

600 OHM

5

5
5

2

GPO[0..4]

VCC3.3

VMPLL

600 OHM

5
C419 C420
0.1uF 0.1uF

R405
22K

DDC_WP

1/16W

3

Q402
PMBS3904
C422

VCC3.3

0.1uF

R406
10K

R481

1/16W

R482

NC

on_PANEL_12V

R488

WP

NC

NC

100
100
100

R422
R423

4.7K
4.7K

B

+5V
+5V

NC

1/16W
1/16W

2,3

VCC3.3

R408

KEY A
R483
NC

R412
10K 1/16W

C616

2
2

NC
R417

KEY 1
KEY 2
POWER

1/16W
1/16W
1/16W

VCC3.3

Q405

2

on_BACKLIGHT
adj_BACKLIGHT
R418
R420
R411

2

DET_DVI 3
DET_VGA 3
on_PANEL

10K
R413

10K

1/16W

20K

1/16W

R409

1/16W

120

120

1/16W
Q403
PMBS3906

Q401
C424

1/16W

R414

0.1uF

R419

PMBS3906
R421

0

0

LED_A
1/16W

LED_G
1/16W

Volume
AUDIO_MUTE
AUDIO_STBY
VCC3.3

VCC3.3

77
76

C425

13
38
41
47
96
116

R424
10K

R425

1/16W 10K

R426
10K 1/16W

1/16W
R428
R429

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

8
1/16W 7
6
5

R474

0.1uF

U403
VCC
WP
SCL
SDA

A0
A1
A2
GND

3.9K

1
2
3
4

R475

1/16W

3.9K

1/16W

KEY 2

KEY _AUTO

AT24C16N-10SC-2.7

R476

1K

Option

KEY _RIGHT

1/16W
R478

1K

KEY _A

1/16W
R480

1.5K

KEY _MENU

+12V

R477
+12V

KEY _B

1/16W

KEY 1
FB407
600 OHM

C416

C414 C415
0.1uF 0.1uF

VCC3.3 FB406

GPO[0..4]

FB405 VPLL

VCC3.3

0.1uF

5

PB[12..23]
ESP
OSP

VCC3.3
2

600 OHM

5

PB[6..11]

PB[12..23]

C409 C410 C411 C412 C413
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF

5

2

20
21

27
28
29
30
31

+

5

PA[14..19]

PB[0..5]

ESP
OSP
GPO0
GPO1
GPO2
GPO3
GPO4

35
69
78
79

VDDP

5

PA[8..13]

PA[14..19]

0.1uF

600 OHM

C408

PA[0..7]

FB402 AVDD
600 OHM
C407

10uF/16V
P[0..7]

75
74
26

22
23
24
25

VCC3.3

VCC3.3

C404 C405 C406
0.1uF 0.1uF 0.1uF

VCC3.3 FB403
2

9
10
15
16
17
18

80
81
88
87
86
85
84
83
82

2
+

4.7uF/16V

2

C

3
3

1/16W 10K

59
58
56
55
57
54
53
63
64
65
66

3 RIN
GNDR
3 GIN
3 GNDG
1/16W3 SOG
3 BIN
3 GNDB
3 HSY NC
3 VSY NC
3

VCC1.8

C403

E

10K

R490

AVDD_ADC

R489

AVDD_DVI
AVDD_DVI

VCC3.3

AVDD_PLL

U401

AVDD_MPLL
AVDD_MPLL

44
50

2

1K

1/16W
R479

2

KEY _LEFT
1K

KEY _C

1/16W

+5V

+5V
CN404

0

1/16W

1K

1/16W
R432

Volume

R433

NC

Q404
PMBS3904

0

1/16W
C431

OUT-L+
OUT-L-

1
3
5
7
9
11
13

2
4
6
8
10
12
14

NC
CONN

10K

R484
1/16W

C426

R485
10K 1/16W

C427

C428

0.1uF 0.1uF 0.1uF

C429

D401C430

0.1uF
1

R430
R431

AUDIO_STBY
AUDIO_MUTE
OUT-R+
OUT-R-

2

+5V

2

2,3

0.1uF
RLZ36B

D402
RLZ36B
1

+5V

FB408
600 OHM

LED_G
LED_A
POWER

CN403
KEY _B
LED_G
KEY _AUTO
KEY _RIGHT
POWER
OUT-L+
OUT-L-

1
3
5
7
9
11
13
15

KEY _A
LED_A
KEY _MENU
KEY _LEFT

2
4
6
8
10
12
14
16

KEY _C
OUT-R+
OUT-RTitle

TSUM57AK
CONN

Size
C

GND

Date:

- 73 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

Document Number

Rev

SCALER
Thursday , June 30, 2005

A
Sheet

1

of

5

INPUT
CN405

14

R434

56

1/16W

C432 0.047uF

FB411

0

1/16W

R435

56

1/16W

C433 0.047uF

FB412

0

1/16W

R436

56

1/16W

C434 0.047uF

R437

470

1/16W

C435 0.047uF

R441

100

1/16W

C436 0.047uF

R442

100

1/16W

C437 0.047uF

R443

100

1/16W

C438 0.047uF

R438
75

1/16W

D403
BAV99

3

3

3

16

15

1/16W

D404
BAV99

D405
BAV99

D406

+5V

ESD_5V
1

10K

SOG

4

GNDR

4

GNDG

4

GNDB

4

120 OHM

2,4

R446

1K

100

1/16W

DET_VGA

1/16W

VSI

+5V

4

PC5V

2

FB409

4

1/16W

R445
HSI

4

BIN

R444

C441 0.1uF
2

1

2

1

2

C440 0.1uF

4

GIN

+5V

MLL5232B 5.6V
C439 0.1uF

RIN

R447

1K

1/16W

HSY NC

4

VSY NC

4

1

13

0

R440
1/16W

12

FB410

75

DB15
RED+
1
RED6
GREEN+
2
GREEN7
BLUE+
3
BLUE8
4
PC5V
PC5V
9
VGA_CON
5
10

11

R439
75 1/16W

17

11.3

D407

D408
MLL5232B 5.6V

D409
MLL5232B 5.6V

R448
2.2K

1/16W

C442

R449

33pF

2.2K

C443
1/16W

3

BAV70
D410
MLL5232B 5.6V

220pF

R450

SCL_VGA
SDA_VGA

100
100

1/16W
1/16W

R451 R452
10K 1/16W
10K 1/16W

U404
8
7
6
5

4
4

A0
A1
A2
GND

C444

1
2
3
4

0.1uF

DDCA_SDA
DDCA_SCL

DDC_WP
+5V

1/16W

DET_DVI

4
R455
R456

100
100

1/16W
1/16W

DVI5V

R457 10K

D413
1/16W

BAV70
3

100

4

DVI5V
1

1/16W

R458

SCL_DVI
SDA_DVI
DVI5V
HPD

11
3
19
22

R472
NC

D426
LL5232B 5.6V 5%

D414
LL5232B 5.6V 5%

D415
LL5232B 5.6V 5%

D416
LL5232B 5.6V 5%

C445

R459

0.1uF

DAT0+
DAT0DAT1+
DAT1DAT2+
DAT2-

R462
R463
R464
R465
R466
R467

10K
10
10
10
10
10
10

1/16W
1/16W
1/16W
1/16W
1/16W
1/16W

B+
BG+
GR+
R-

4
4
4
4
4
4

4
4

1/16W

R460 R461
10K 1/16W
10K 1/16W

U405
8
7
6
5

VCC
WP
SCL
SDA

A0
A1
A2
GND

1
2
3
4

C446
0.1uF

M24C02

DDCD_SDA
DDCD_SCL

DDC_WP

4

+5V
DCLK+
DCLKD421
BAV99

D422
BAV99

3

D420
BAV99

3

D419
BAV99

3

D418
BAV99

3

D417
BAV99

3

JACK DVI

R468
R469
3

18
17
10
9
2
1
13
12
5
4
21
20
23
24

D412
MLL5232B 5.6V

2

10K

VCC
WP
SCL
SDA
M24C02

D411
MLL5232B 5.6V

R471

3

DAT0+
DAT0DAT1+
DAT1DAT2+
DAT2DAT3+
DAT3DAT4+
DAT4DAT5+
DAT5clk+
clk-

25
26
27
29
28
8
15
6
7
14
16

3

1/3shield
2/4shield
0/5shield
clk shield

1/16W

VCC5V

CN406
R
G
B
RGB GND
HSY NC
VSY NC
SY NC GND
DDC SCL
DDC SDA
+5V
HPD

R453
R454

10K

D423
BAV99

10
10

1/16W
1/16W

R473
CLK+ 4
CLK- 4

NC
R470

D424
BAV99

1K

1/16W

ESD_5V

0.1uF

0.1uF

0.1uF

0.1uF

0.1uF

1

2

C454
2

1

C453
2

1

C452
2

1

C451
2

1

C450
2

1

2

1
0.1uF

C449

Title
D425

0.1uF

TSUM57AK

RLZ36B

Size
B

1

0.1uF

C448
2

1

2

C447

Date:

- 74 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

Document Number

Rev

A

INPUT
Monday , May 30, 2005

Sheet

1

of

5

Inverter

C202
0.1uF/25V

470uF/25V

R214
12KΩ 1/10W

ON/OFF
R211
NC

R210
47KΩ 1/10W

R213
4.7KΩ 1/10W

C209
33uF/50V
R212
62KΩ 1/10W

R221
R222
R223
R224
1.8KΩ 1/4W
1.8KΩ 1/4W
1.8KΩ 1/4W
1.8KΩ 1/4W

C205 1uF/25V

D201
RB050L-40

R203
2.4KΩ 1/10W

C210
1uF/25V

R204
470Ω 1/10W

6

R206
12KΩ 1/10W
Q206
KTC5103L-Y -U/P

Q207
KTC5103L-Y -U/P

16
15
14
13
12
11
10
9
CT
REF
RT
SCP
1IN+
2IN+
1IN2IN1FEEDBACK2FEEDBACK
1DTC
2DTC
1OUT
2OUT
GND
VCC

C206
NC

TP3
HVO

D210
LL4148-GS08

R229
680Ω 1/10W

R231
12KΩ 1/10W

C223
0.1uF/25V

D203
1N4148

R207
10KΩ 1/10W

R225
1KΩ 1/4W

6

D204
1N4148

D207
1N4148

2. FOR 17" 4 LAMPS INVERTER
Document Number

Rev

PWPC1742QDV1P(715G1492-1)
Sheet

D206
1N4148

2

is power GND

is signal GND

A

of

2

- 75 –
ViewSonic Corporation

CN204
CONN

D209
1N4148

AOC (Top Victory) Electronics Co., Ltd.

Tuesday , July 05, 2005

C212
18pF/3KV

R226
1KΩ 1/4W

GND

Date:

12

1
2

R209 0Ω 1/10W

Size

1
2

C211
12pF/3KV

R208 0Ω 1/10W

Title

TP4
HVL

8
9
D202
1N4148

R230
470Ω 1/10W

D205
1N4148

1
2
3
4
5
6
7
8

C207
330pF

C222
0.47uF/25V

CN202
CONN

CN203
CONN
PT202
POWER X'FMR
1
11

IC201
TL1451ACD

C214
12pF/3KV

12

1
2

C208
0.1uF/25V

R232
51KΩ 1/10W

1
2

8
9
C221
0.33uF/250V

Q205
PMBS3906

PT201
POWER X'FMR
1
11

C213
18pF/3KV

R205
16KΩ 1/10W

Q204
PMBS3904

CN201
CONN
1

ZD201
RLZ11B

1

L

R202
220Ω 1/10W

+

DIM

L201

Q203
AOU401L

TP2
HVO

1

Q201
DTC144WKA

R201
C204
2.4KΩ 1/10W
0.1uF/25V

+ C203

1

Q202
DTA144WKA

1

C201
0.1uF/25V

TP1
HVO

2
2

3

+12V

1

11.4

Confidential - Do Not Copy

VG720

R227
1KΩ 1/4W

D208
1N4148

R228
1KΩ 1/4W

A-D Power
R921
47Ω 1/2W

4

11.5

C921
0.001uF/500V

+

DB901
KBP206G
3

3

2

D921
FME-210B
L903

2

L

F902
0Ω 1/8W
+12V

1

-

T901
POWER X'FMR
4
7

+
R905
3.3KΩ 1/8W

8

4
L

IC901
NCP1203D60R2G

+5V

4

C903 0.47uF/250V

+ C924
1000uF/16V

C900
0.0022uF/250V

3

R923
560Ω 1/4W

ZD905
RLZ5.1B

ZD904
RLZ13B
1

C911
470pF/50V
D923
LL4148-GS08
1

4

NR901
NTCR

IC902
PC123FY 2 4P

R924
1KΩ 1/10W

R914
4.7KΩ 1/10W

Q902
2PA733P
1

2

2

R912
100Ω 1/10W

F901
FUSE

R929
33KΩ 1/10W
CN902
CONN
1
2
3
4
5
6
7
8

C934
NC

2

1
3

1

NC

3

ZD901
RLZ18B

R930
3.6KΩ 1/10W
C932
0.47uF/25V

2

2

ZD902
RLZ5.1B

R934
NC

D924
LL4148-GS08

C912
0.001uF

t

1
R913
75KΩ 1/10W

+

C908
10uF

Q903
2PC945P

D903
LL4148-GS08

C929
0.1uF

IC903
KIA431A-AT/P

R931
1KΩ 1/10W

R925
0Ω 1/8W

R919
20KΩ 1/10W

ON/OFF

DIM

+12V
+5V

C927
0.1uF

R932
1KΩ 1/10W

3

VAR901

C928
0.1uF

R916
220Ω 1/10W

2

R900
330KΩ 1/8W

R927
NC

10

1

R902
330KΩ 1/8W

R926
NC

Q901
2SK2645-54NR

R901 330KΩ 1/8W
C909
47uF/25V

C926
470uF/16V

D922
FMW-2156

R918
0.39Ω 2W

+

+

12

2

1

7

L

R917
10KΩ 1/10W

1
5
NCP1203D60R2G
R911
3.6KΩ 1/10W

ZD903
PTZ9.1B
L904

2

R909
68Ω 1/10W

6

R910
2.2KΩ 1/10W
8

L901

C906
100uF/25V

R920
NC
R915
22Ω 1/10W

2

1
9

2
C907
0.1uF

3

6
1

D902
UF4003

C901
0.001uF/250V

2

R907
NC

C902
0.001uF/250V

R922
C922
47Ω 1/2W 0.001uF/500V

1

R904
3.3KΩ 1/8W

11

+ C925
470uF/25V

2

L902
L

5

+ C931
1000uF/25V

1

1

D901
BA159GPT

+ C923
1000uF/25V

2

2

R908
100KΩ 2W

C905
0.0015uF/2KV

1

4

R906
NC

3

C904
100uF/450V

+
3

R903
3.3KΩ 1/8W

C930
NC

R933
2.4KΩ 1/10W
GND

1
2
3

C933
NC

CN901
CONN

C935
0.001uF/250V

AOC (Top Victory) Electronics Co., Ltd.
Title

- 76 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

1.POWER OUTPUT 12V & 5 V

Size
B

Document Number

Date:

Tuesday , July 05, 2005

Rev

PWPC1742QDV1P(715G1492-1)
Sheet

1

of

A

2

11.6

Audio
C602 0.001uF

ROUTC603

ROUT+

FB602

C604

0.001uF
5V

+12V

0.001uF

FB604

FB601

600 OHM

600 OHM
GND

C606

C642

C607

0.1uF/16V NC

C608
0.01uF

C609
0.1uF/16V

NC

38

37

39

40

41

42

43

GND

BSRP

PVCCR

PVCCR

ROUTP

ROUTP

PGNGR

46

45

44
ROUTN

U601

ROUTN

C601
10uF/50V

47

GND

GND

+

C643

0.01uF

PVCCR

+
C605
10uF/50V

R602
1/16W

48

/SD

GND
C634 NC

BSRN

0

1/16W

PVCCR

10K

600 OHM

PGNGR

R601

AVDD

C610
FB605

R609
10K 1/16W

CN601
5
1
2
3
4
PHONEJACK

C635
NC

600 OHM

2

C611 1uF/16V

C612

1/16W

0.001uF

NC

R612
39K

4
5

C616 1uF/16V

0.001uF
LIN
FB606
600 OHM

R610
10K 1/16W

6

C619 1uF/16V

MUTE

V2P5

AVcc

LINP

VAROUTR/NC

LINN

7

AVDDRef

MODE_OUT/NC

RINP

C613 1uF/16V

C615

1/16W

VCLAMPR

RINN

3

C614 1uF/16V
C636

/SD

36
1uF/16V

RIN

R611
39K

1

VAROUTL/NC

TPA3003D2PFBR

AVddREF

8

AGND

VREF

AVdd

35

10

R606

VARMAX/AGND

ROSC

VOLUME

AGND

PVCCL
23

PVCCL
22

LOUTP
21

20

LOUTP

PGNGL
19

LOUTN

PGNGL
18

17

LOUTN
16

BSLN
FB609

14

13

+12V

VCLAMPL
PVCCL

REFGND

32

R605
NC

+ C617
C618
0.1uF/16V

10uF/50V

31
30

AVDD

5V

29
28

C622
220pF

FB607

27
R607
120K

/SD
MUTE/MODE

1/16W

26
25

2
4
6
8
10
12
14

LOUT+
LOUT-

1
3
5
7
9
11
13

+12V

600 OHM
VOLUME

+
C621
0.1uF/16V

C620
470uF/16V

ROUT+
ROUT-

CN602
CONN

C623 1uF/16V

GND

GND
GND

600 OHM
GND

C626
0.01uF

+
C625
10uF/50V

C627
0.1uF/16V
GND

GND
C644

C628
GND
C633 NC

FB610

C629
0.1uF/16V 0.01uF
GND
FB612

C645

NC
GND

CN603
4
3
2
1

ROUTROUT+
LOUTLOUT+

NC
600 OHM

LOUT-

600 OHM

GND
LOUT+

C630 0.001uF
C631
0.001uF

CONN
C638

C639

C640

C641

NC

NC

NC

NC

C632

Title

0.001uF
GND

GND

GND

- 77 –
ViewSonic Corporation

1/16W

BSLP

12

R604 0

24

11

C624
1uF/16V

FB608
600 OHM

COSC

MUTE/MODE

+12V

NC

15

R608
1K 1/16W

PVCCL

VOLUME

VARDIFF/AGND

R603
NC

33

AVDDRef
9

GND

34

Confidential - Do Not Copy

VG720

AUDIO BD FOR TPA3002/TPA3003

Size
B

Document Number
715L1178-H

Date:

Monday , July 04, 2005

Rev
H
Sheet

1

of

1

11.7 Key Pad

4
2

1

3

LED ORANGE
LED GREEN
LED001

LED

CN001

GND

SW001

SW002

SW003

SW004

SW005

SW006

SW007

SW008

SW

SW

SW

SW

SW

SW

SW

SW

1
2
3
4
5
6
7
8
9
10
11

LCD ON/OFF
KEY 2
KEY 1
KEY DOWN
KEY UP
VOLUME VOLUME +
MUTE

GND
CONN

GND

AOC (Top Victory) Electronics Co., Ltd.
Title

KEY PAD (For Viewsonic)
Size
A

Document Number

Date:

Thursday , May 05, 2005

- 78 –
ViewSonic Corporation

Confidential - Do Not Copy

Rev
B

CONTROL KEY PAD (Switch)

VG720

Sheet

1

of

1

12. PCB Layout Diagram
12.1

MAIN BOARD PCB TOP VIEW

- 79 –
ViewSonic Corporation
VG720

Confidential - Do Not Copy

12.2 MAIN BOARD PCB BUTTON VIEW

- 80 –
ViewSonic Corporation
VG720

Confidential - Do Not Copy

12..3

KEYBOARD TOP VIEW

12.4

KEYBOARD BUTTON VIEW

- 81 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

12.5

POWER PCB TOP VIEW

- 82 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

12.6 POWER PCB BUTTON VIEW

- 83 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

12.6

AUDIO PCB TOP VIEW

- 84 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

12.6

AUDIO PCB BUTTON VIEW

- 85 –
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
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

Excellent

Good

Fair

Bad

Good

Fair

Bad

B. Are you satisfied with the VG720 Service Manual?
Item
1. Service Manual Content
2. Service Manual Layout
3. The form and listing

Excellent

C. Do you have any opinion and suggestion about this Service Manual?
Reader’s Basic Data:
Name:

Title:

Company:
Add:
Tel:

Fax :

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)

- 86 –
ViewSonic Corporation

Confidential - Do Not Copy

VG720

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : Yes
Page Count                      : 86
XMP Toolkit                     : XMP toolkit 2.9.1-13, framework 1.6
About                           : uuid:a85118cc-bc2c-45e6-a8ad-011345e8bf84
Producer                        : Acrobat Distiller 6.0 (Windows)
Create Date                     : 2005:12:07 13:29:17+08:00
Modify Date                     : 2005:12:07 13:29:17+08:00
Document ID                     : uuid:02ef5ce5-76e8-4cec-b40a-724ae02d3947
Format                          : application/pdf
Title                           : untitled

EXIF Metadata provided by EXIF.tools

VG720

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