Viewsonic VX750-1 Service Manual

Service Manual

ViewSonic VX7501

Model No. VLCDS27089-1W

17” Color TFT LCD Display

ViewSonic

(VX750_SM_755 Rev. 1a Apr. 2004)



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

Copyright

Copyright
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of ViewSonic Corporation.

Disclaimer

ViewSonic makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular
purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time
to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or
changes.

Trademarks

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.

2004 by ViewSonic Corporation. All rights reserved. No part of this publication may be

¤

Revision History

Revision Date Description Of Changes Approval

1a 04/27/04 Initial Release DCN-3772 Angela Lu

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TABLE OF CONTENTS

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjusting Procedure

6. Trouble Shooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram And Spare Parts List

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

1

2
3

9
21
38

46
51
53
56

64

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1. Precautions and Safety Notices

1. Caution :

No modification of any circuit should be attempted . Service work should only be performed after you are
thoroughly familiar with all of the following safety checks and servicing guide line

2. Safety Check :

Care should be taken while servicing this LCD display, due to the high voltage used in the inverter circuit.
High voltage is exposed in such areas as the associated transformer circuits .

3. POWER SUPPLY REQUIREMENTS

The external power converter for this display utilizes AC and DC cords. The AC cord is detachable , but the
DC cord is permanently attached . Any attempt to replace another adapter could result in damage to the display .

4. LEAKAGE CURRENT HOT CHECK

4-1 Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during this check.
4-2 Connect a 1500 ohm , 10 watt resistor , paralleled with a 0.15uF capacitor between each metallic part

and a good earth ground

4-3 Use an AC voltmeter with 1000 ohm / volt or more sensitivity and measure the AC voltage across the

combination 1500 ohm resistor and 0.15uF capacitor.
4-4 Move the resistor connection to each exposed metallic part and measure the voltage.
4-5 Reverse the polarity of the AC plug in the AC outlet and repeat the above measurement.
4-6 Voltage measured must not exceed 1.5 volt RMS, from any exposed metallic part to the ground. A leakage

current tester may be used in the above hot check, in which case any circuit measured must not exceed 1.0

milliamp. In the case of a measurement exceeding the 1.0 milliamp value, a rework is required to eliminate the

chance of a shock hazard .

AC VOLTMETER

V

0.15u
.

To Metal Parts

1500 10W

Earth Ground

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2. Specification

Mechanical :
Dimension ( W
Set a. with stand:
b. Without stan 502 x 340 x 63 mm

Base (L X W): 275 x 195 mm
Packing : ( W x H x D ) mm: 572 x 491 x 240
Weight : Net / Gross ( Kg ): 5.6 / 8.2
Wall Mount (VESA): 100 x 100
LCD Panel type: QDI / QD17EL07
Max. resolution (HxV) : 1280 x 1024
Nominal picture size (HxV): 338 mm x 270
Display colors: 16.2 M ( 6 bit + dith
Dot pitch: 0.264 mm
Response time: 4 +1 2 / 16ms (Tr +
Brightness (100% whi ) Typical : 270 cd/m² , Min. 220cd
Contrast : Typical : 450:1, Min. 300:1
Viewing angle : 75 / 75 /65 / 60 (L/R/T/B CR>=10)
Synchronization: Fh = 31~82 KHz / Fv=50~85Hz

x H x D ) mm

502 x 405 x 195 mm

d:

mm

mm

mm

ering )

Tf / typical)

te : /m²

Presets: 18 timing modes
OSD Language : 9 languages
Color Temperature : sRGB , 6500°K (default)
5400°K / User R,G,B
Plug & Play : DDC1/2B interface
Scaler chip: Mstar MST 8131
Audio Input Connector: 3.5 mm Stereo, PC2001
Audio Amplifier : 5W x 2 (chip :TPA3002)
AC Power range: 90 V ~ 264 V, 50 Hz / 60
Power consumption: < 50W green / < 1W amber
(On / Off mode)

/ 9300°K

Hz

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3. Front Panel Function Control Description

Adjusting the Screen Image

Use the buttons on the front control panel to display and adjust the OnView

®

controls which display on the screen. The OnView controls are explained at the
top of the next page.

1 MENU : Displays the Main Menu or exits the control screen and saves adjustments.

VOL- / VOL+ : Decreases or increases volume.

UP / DOWN : Scrolls through menu options and adjusts the displayed control.

Also a shortcut to display the Contrast adjustment control screen.

2 Enter : Displays the control screen for the highlighted control.
Also a shortcut to Auto Image Adjust.

INPUT SELECT : Also toggles between two controls on some screens.

Power On / Off

Power light

Blue = ON
Orange = Power Saving

Main Menu
With OnView controls

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Do the following to adjust the screen image:

1

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

NOTE: All OnView menus and adjustment screens disappear automatically

after about 15 seconds. This time period is adjustable through the Setup
menu and the OSD timeout control described on page 11.

2

To highlight a control you want to adjust, press I or J to scroll up or down
the Main Menu.

3

To select the highlighted control, press button [2]. A control screen appears
like the example shown below.

Contrast

1:EXIT 2: Brightness

4

To adjust the control, press the upIor downJbuttons.

5

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

The line at the
bottom of the
screen tells you
what you can do
next: Exit or Select
the control that is
highlighted.

The following tips may help you optimize your display:

• Adjust your computer's graphic card so that it outputs a video signal 1280 x
1024 @ 60 Hz to the LCD dislay. (Look for instructions on “changing the
refresh rate” in your graphic 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 dislay.)

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Main Menu Controls

Adjust the menu items shown belowbyusing the up Iand downJbuttons.

Control Explanation

Auto Image Adjust

automatically sizes, centers, and fine tunes the

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

NOTE

: Auto Adjust works with most common video cards. If

this function does not work on your LCD dislay, then lower the
video refresh rate to 60 Hz and set the resolution to its pre-set
value.

Contrast

adjusts the difference between the image background

(black level) and the foreground (white level).

Brightness

Color Adjust

adjusts background black level of the screen image.

provides several color options: preset color
temperatures and User which allows you to adjust red (R), green
(G), and blue (B). The factory setting for this product is 6500K
(6500 Kelvin).

sRGB

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

9300K

— Adds blue to the screen image for cooler white (used

in most office settings with fluorescent lighting).

6500K

— Adds red to the screen image for warmer white and

richer red. Default setting.

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

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Control Explanation

User

— Individual adjustments for red, green, and blue.

1

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

2

To adjust selected color, press I or J.

3

When you are finished making all color adjustments, press
button [1] twice.

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.

Input Select

allows you to toggle between an analog and a

digital signal.

i

Information

coming from the graphics card in your computer. See your

displays the timing mode (video signal input)

graphic card’s user guide for instructions on changing the
resolution and refresh rate (vertical frequency).

VESA 1280 x 1024 @ 60 Hz (recommended) means that the
resolution is 1280 x 1024 and the refresh rate is 60 Hertz.

Manual Image Adjust

The Image Adjust controls are explained below:

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Control Explanation

H./V. Position

adjusts horizontal and vertical position of the
screen image. You can toggle between Horizontal and Vertical
by pressing button [2]. Horizontal moves the screen image to
the left or to the right. Vertical moves the screen image up and
down.

H. Size

NOTE:

Fine Tune sharpens focus by aligning the illuminated text and/

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

Vertical size is automatic with your LCD dislay.

or graphic characters.

NOTE: Try the Auto Adjust (see page 9) before using the Fine

Tune control.

Sharpness

adjusts the clarity and focus of the screen image.

?

Setup Menu displays the menu shown below.

The Setup Menu controls are explained below.

L

anguage

Select allows you to choose the language used in

the menus and control screens.

Resolution Notice

advises the optimal resolution to use.

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Control Explanation

OSD

OSD

OSD Position

allows you to move the on-screen display menus

and control screens.

OSD Timeout

sets the length of time an on-screen display
screen is displayed. For example, with a “15 second” setting, if
a control is not pushed within 15 seconds, the display screen
disappears.

OSD Background

allows you to turn the On-Screen display
background on or off. This means that while making adjustments
from the OSD control screens you can also view open software
applications, or the Windows desktop.

Memory Recall

returns adjustments to the original factory
settings if the display is operating in a factory Preset Timing
Mode listed in this user guide.

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4. Circuit Description

1. Outline

1.1 Po

wer On/Off, up arrow button, down arrow button, VOL- button, VOL+ button, 1MENU button, 2Enter
button and INPUT SELECT button on the top bezel.
D-sub 15pin connector, DVI-D connector, audio line-i

1.2 n receptacle, audio line-out receptacle, earphone jack

and DC-IN jack are loc ated on the back side of the cabinet.

1.3

OSD menu includes the following function;

Auto Image Adjust (only active under ana

log input)
Contrast/Brightness
Audio Adjust
Color Adjust
Information
Manual Image Ad

Setup Menu

Memory Reca

1. Contrast and Bright

4 ness can be directly controlled with UP / DOWN key.

1.5 Audio volume can be controlled with VOL- key and VOL+ key. When Audi

2Enter key can disable audio output.

2. Conne

ctors

2.1 AC inlet : CEE2

2.2 Audio : Line-in, Line-out and Earphone re

CN9

1
5
4
3
2

just

ll

2 type connector

CN13

ceptacles

1
5
4
3
2

1

2

6

5

3

4

CN12

o Adjust menu is active, pushing

Line-in receptacle Line-out receptac Earphone recepta

(Line-in receptacle is green, line-out receptacle is blue, earphone jack is black.)

2.3 Video signal connector for analog input: 15P Mini D-Sub

le cle

PIN MNEMONI SIGNAL

1 RV Red Video

2 GV Green Video

3 BV Blue Video

4 NC None

5 GND Ground (DDC

return)

6 RG Red GND

7 GG Green GND

8 BG Blue GND

9 +5V +5V (for DDC)

10 SG Sync GND

11 NC None

12 SDA DDC Data

13 HS Horizontal Sync

14 VS Vertical Sync

15 SCL DDC Clock

16

1

11

6

2

7

3

8

4

9

12

13

14

5

15

10

CN6

DB15HD

17

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2.4 Video signal connector for digital input: 24pin DVI-D connector

CN9

RX2-

RX2+

GND

RX4-

RX4+

RX1-

RX1+

GND

RX3-

RX3+

GND

RX0-

RX0+

GND

RX5-

RX5+

GND

RXC+

RXC-

DVI-D

SCL

SDA

VS

HP

5V

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

Pin

Signal Name Description

No.

1 RX2- TMDS negative differential input,

channel 2

2 RX2+ TMDS positive differential input,

channel 2
3 GND Logic Ground
4 RX4- Reserved. No connection
5 RX4+ Reserved. No connection
6 SCL DDC2B Clock
7 SDA DDC2B Data
8 VS Reserved. No connection
9 RX1- TMDS negative differential input,

channel 1

10 RX1+ TMDS positive differential input,

channel 1

11 GND Logic Ground
12 RX3- Reserved. No connection
13 RX3+ Reserved. No connection
14 +5V Power
15 GND Logic Ground
16 HP 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 RX5- Reserved. No connection
21 RX5+ 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. ELECTRICAL SPECIFICATIONS

3.1 Standard conditions

3.2 POWER

3.2.1 Power supply

Display Area

Video Signal

Contrast

Brightness

Ambient

Input

Warming up

Display

337.9 x 270.3 mm

0.7Vpp

Max.

Max.

20 +/- 5 °C

AC

> 30 min

1280 x 1024

Input voltage 100~240Vac
Power frequency 50~60Hz
Input current

<1.5Arms@90Vac

Inrush current

<0.8Arms@180Vac

50A(Max) at 120Vac(cold start)
Power consumption 38W(typical);50Watts(Max)
Output voltage @0-4.16A Load 12 Vdc+/-5%

3.2.2 Power Management

State Power Indicator

On 45Watts Blue
Standby < 1Watts Amber
Off <1Watts Off

3.3 Acceptable timing

If the timing is within following specification, this LCD display can automatically function with a certain position.

Horizontal: Sync frequency: 30~82 kHz
Vertical: Sync frequency: 56~85Hz

3.4 Signal level and input impedance

3.4.1 Video Signal level: 0.7Vp-p Video signal.

3.4.2 Sync Signal level

H/V Separate: TTL level

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3.4.3 Input impedance

Analog video input: 75 ohm
Digital video input: 100 ohm
Sync input: > 1 k ohm
Audio input: 10K ohm

4. Signal Cable: Signal cable with Mini D-Sub 15P connectors at both ends. Length: 1.8 meter.

5. EDID DATA

18.1 Analog EDID

TIME: 15:48:11

DATE: WED AUG 13, 2003

______________________________________________________________________
______________________________________________________________________

VIEWSONIC CORPORATION

EDID VERSION # 1, REVISION # 3

DDCTEST FOR: VIEWSONIC VX750

______________________________________________________________________
______________________________________________________________________

128 BYTES OF EDID CODE:

0 1 2 3 4 5 6 7 8 9
________________________________________

0 | 00 FF FF FF FF FF FF 00 5A 63
10 | 14 D7 01 01 01 01 01 0D 01 03
20 | 0E 22 1B 78 2E 0C 55 A2 56 4C
30 | 96 25 1A 50 54 BF EF 80 81 80
40 | 81 40 71 4F 01 01 01 01 01 01
50 | 01 01 01 01 30 2A 00 98 51 00
60 | 2A 40 30 70 13 00 52 0E 11 00
70 | 00 1E 00 00 00 FF 00 41 32 4E
80 | 30 33 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 4B 1E 50 0E

100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 58 37 35 30 0A 20
120 | 20 20 20 20 20 20 00 21

______________________________________________________________________
(08-09) ID MANUFACTURER NAME = VSC
(11-10) PRODUCT ID CODE = D714
(12-15) LAST 5 DIGITS OF SERIAL NUMBER = NOT USED
(16) WEEK OF MANUFACTURE = 01

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(17) YEAR OF MANUFACTURE = 2003
(10-17) COMPLETE SERIAL NUMBER = SEE DESCRIPTOR BLOCK
(18) EDID VERSION NUMBER = 1
(19) EDID REVISION NUMBER = 3
(20) VIDEO INPUT DEFINITION:
ANALOG SIGNAL

0.700, 0.300 (1.000 VP-P)

SEPARATE SYNCS, COMPOSITE SYNC, SYNC ON GREEN
(21) MAXIMUM HORIZONTAL IMAGE SIZE = 340 MM
(22) MAXIMUM VERTICAL IMAGE SIZE = 270 MM
(23) DISPLAY GAMMA = 2.20
(24) POWER MANAGEMENT AND SUPPORTED FEATURE(S):

ACTIVE OFF/VERY LOW POWER, STANDARD DEFAULT COLOR SPACE,

PREFERRED TIMING MODE

DISPLAY TYPE = R/G/B COLOR
(25-34) CHROMA INFO:

RED X - 0.633 GREEN X - 0.300 BLUE X - 0.146 WHITE X - 0.313
RED Y - 0.336 GREEN Y - 0.586 BLUE Y - 0.103 WHITE Y - 0.329

(35) ESTABLISHED TIMING I:

720 X 400 @ 70HZ (IBM,VGA)
640 X 480 @ 60HZ (IBM,VGA)
640 X 480 @ 67HZ (APPLE,MAC II)
640 X 480 @ 72HZ (VESA)
640 X 480 @ 75HZ (VESA)
800 X 600 @ 56HZ (VESA)
800 X 600 @ 60HZ (VESA)

(36) ESTABLISHED TIMING II:

800 X 600 @ 72HZ (VESA)

800 X 600 @ 75HZ (VESA)

832 X 624 @ 75HZ (APPLE,MAC II)

1024 X 768 @ 60HZ (VESA)

1024 X 768 @ 70HZ (VESA)

1024 X 768 @ 75HZ (VESA)

1280 X 1024 @ 75HZ (VESA)
(37) MANUFACTURER'S RESERVED TIMING:

1152 X 870 @ 75HZ (APPLE,MAC II)

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(38-53) STANDARD TIMING IDENTIFICATION:

1280 X 1024 @60HZ
1280 X 960 @60HZ
1152 X 864 @75HZ
NOT USED

NOT USED
NOT USED
NOT USED

NOT USED
______________________________________________________________________
(54-71) DETAILED TIMING / DESCRIPTOR BLOCK 1:

1280X1024 PIXEL CLOCK: 108.00 MHZ

______________________________________________________________________

HORIZONTAL IMAGE SIZE: 338 MM VERTICAL IMAGE SIZE: 270 MM

REFRESHED MODE: NON-INTERLACED NORMAL DISPLAY - NO STEREO

HORIZONTAL:
ACTIVE TIME: 1280 PIXELS BLANKING TIME: 408 PIXELS
SYNC OFFSET: 48 PIXELS SYNC PULSE WIDTH: 112 PIXELS
BORDER: 0 PIXELS FREQUENCY: 63.98 KHZ

VERTICAL:
ACTIVE TIME: 1024 LINES BLANKING TIME: 42 LINES
SYNC OFFSET: 1 LINES SYNC PULSE WIDTH: 3 LINES
BORDER: 0 LINES FREQUENCY: 60.02 HZ

DIGITAL SEPARATE, HORIZONTAL POLARITY (+) VERTICAL POLARITY (+)

______________________________________________________________________
(72-89) DETAILED TIMING / DESCRIPTOR BLOCK 2:

MONITOR SERIAL NUMBER:
A2N030100001

______________________________________________________________________
(90-107)DETAILED TIMING / DESCRIPTOR BLOCK 3:

MONITOR RANGE LIMITS:
MIN VERTICAL FREQ - 50 HZ
MAX VERTICAL FREQ - 75 HZ
MIN HORIZ. FREQ - 30 KHZ
MAX HORIZ. FREQ - 80 KHZ
PIXEL CLOCK - 140 MHZ
SECONDARY GTF - NOT SUPPORTED

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(108-125) DETAILED TIMING / DESCRIPTOR BLOCK 4:

MONITOR NAME:

(126) NO EXTENSION EDID BLOCK(S)

VX750

(127) CHECKSUM OK

18.2 Digital EDID

Time: 15:50:10

Date: Wed Aug 13, 2003

______________________________________________________________________
______________________________________________________________________

VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VX750

______________________________________________________________________
______________________________________________________________________

128 BYTES OF EDID CODE:

0 1 2 3 4 5 6 7 8 9

________________________________________

0 | 00 FF FF FF FF FF FF 00 5A 63
10 | 14 D7 01 01 01 01 01 0D 01 03
20 | 80 22 1B 78 2E 0C 55 A2 56 4C
30 | 96 25 1A 50 54 BF EF 80 81 80
40 | 81 40 71 4F 31 0A 01 01 01 01
50 | 01 01 01 01 30 2A 00 98 51 00
60 | 2A 40 30 70 13 00 52 0E 11 00
70 | 00 1E 00 00 00 FF 00 41 32 4E
80 | 30 33 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 4B 1E 50 0E

100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 58 37 35 30 0A 20
120 | 20 20 20 20 20 20 00 76

______________________________________________________________________

(08-09) ID Manufacturer Name = VSC
(11-10) Product ID Code = D714
(12-15) Last 5 Digits of Serial Number = Not Used
(16) Week of Manufacture = 01

(17) Year of Manufacture = 2003
(10-17) Complete Serial Number = See Descriptor Block

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(18) EDID Version Number = 1
(19) EDID Revision Number = 3
(20) VIDEO INPUT DEFINITION:

Digital Signal
Non - VESA DFP 1.x Compatible

(21) Maximum Horizontal Image Size = 340 mm
(22) Maximum Vertical Image Size = 270 mm
(23) Display Gamma = 2.20
(24) Power Management and Supported Feature(s):

Active Off/Very Low Power, Standard Default Color Space,
Preferred Timing Mode
Display Type = R/G/B Color

(25-34) CHROMA INFO:

Red X - 0.633 Green X - 0.300 Blue X - 0.146 White X - 0.313
Red Y - 0.336 Green Y - 0.586 Blue Y - 0.103 White Y - 0.329

(35) ESTABLISHED TIMING I:

720 X 400 @ 70Hz (IBM,VGA)
640 X 480 @ 60Hz (IBM,VGA)
640 X 480 @ 67Hz (Apple,Mac II)
640 X 480 @ 72Hz (VESA)
640 X 480 @ 75Hz (VESA)
800 X 600 @ 56Hz (VESA)
800 X 600 @ 60Hz (VESA)

(36) ESTABLISHED TIMING II:

800 X 600 @ 72Hz (VESA)
800 X 600 @ 75Hz (VESA)

832 X 624 @ 75Hz (Apple,Mac II)
1024 X 768 @ 60Hz (VESA)
1024 X 768 @ 70Hz (VESA)
1024 X 768 @ 75Hz (VESA)
1280 X 1024 @ 75Hz (VESA)

(37) Manufacturer's Reserved Timing:

1152 X 870 @ 75Hz (Apple,Mac II)

(38-53) Standard Timing Identification:

1280 X 1024 @60Hz
1280 X 960 @60Hz

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1152 X 864 @75Hz
640 X 400 @70Hz
Not Used
Not Used
Not Used
Not Used

(54-71) Detailed Timing / Descriptor Block 1:

1280x1024 Pixel Clock: 108.00 MHz

Horizontal Image Size: 338 mm Vertical Image Size: 270 mm

Refreshed Mode: Non-Interlaced Normal Display - No Stereo

Horizontal:
Active Time: 1280 pixels Blanking Time: 408 pixels
Sync Offset: 48 pixels Sync Pulse Width: 112 pixels
Border: 0 pixels Frequency: 63.98 KHz

Vertical:
Active Time: 1024 lines Blanking Time: 42 lines
Sync Offset: 1 lines Sync Pulse Width: 3 lines
Border: 0 lines Frequency: 60.02 Hz

Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)

(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:
A2N030100001

(90-107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 75 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 80 KHz

Pixel Clock - 140 MHz
Secondary GTF - Not Supported

(108-125) Detailed Timing / Descriptor Block 4:

Monitor Name:

VX750
(126) No Extension EDID Block(s)
(127) CheckSum OK

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6. THEORY OF OPERATION

This section describes the function of the LCD monitor per functional block.
This monitor includes MB board, inverter board, adapter and two button boards.

6.1 MB BOARD

The MB board is a two-layer, single-landed. 12V DC power from the power adapter enters the board through
DC jack. Other connectors on the board are for inverter, audio and button boards .The VGA cable is a signal
cable that contains video signal, sync signal and DDC signal from PC VGA adapter. This system board consists
of 4 functional areas: flat panel controller, flash ROM, power regulator and Audio amplifier

6.1.1 Flat panel controller… MST1831A (U3)
The heart of the system board is the scalar chip of MST1831A. The MST1831A is a high performance, dual
input graphics processing IC for LCD monitors with resolutions up to SXGA. It provides all key IC functions
required for LCD panel. On-chip functions include an 8-bit triple ADC, PLL, DVI receiver, high scaling engine,
OSD controller and dual LVDS transmitter.

a) Clock Generation:

Crystal Input Clock (XIN and XOUT): This is the input pair to an internal crystal oscillator and corresponding

logic. A 14.318 MHz crystal is recommended.

b) Hardware Reset (Pin 32):

Hardware Reset signal is provided by MCU (U6). It is active high.

c) Analog to Digital Converter:

The MST1831A chip has three ADC's (analog-to-digital converters), one for each color (red, green and
blue) .The analog RGB and synchronous signals are connected to MST1831A as described below:

Pin Name Pin Number
Red + 63
Red - 62
Green + 60
Green - 59
Blue + 58
Blue - 57
H sync 37
V sync 38

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d) OSD: The MST1831A has a fully programmable, high-quality OSD controller. The on-chip static RAM

stores the cell map and the cell definitions.

e) On chip TMDS receiver: The MST1831A integrated DVI receiver, which operates up to 135MHz and can

directly connect to all DVI compliant transmitters. The TMDS signals are connected to MST1831A
as described below:

Pin Name Pin NO.
R+ 40
R- 41
G+ 43
G- 44
B+ 46
B- 47
CK+ 49
CK- 50

f) PWM controlling function (Pin 73~74): The MST1831A has two dedicated PWM outputs of PWM0 and

PWM1 to control audio volume and back light brightness.

g) Serial interface ports (pin 70 and pin 71): This serial interface ports communicate with MCU and support

up to 400Kbit per second transmit rate.

h) Panel interface (Pin 1, Pin 102, Pin 103, Pin 106, Pin 107, Pin 120~ Pin 125, Pin 108~113, and Pin 128) :

The MST1831A driver interface is highly programmable. It supports dual bus / dual port for SXGA drivers.

6.1.2 Power Regulator AIC1563 (U9), LT1117 (U10, U11): The AIC1563 is a monolithic control IC containing

the primary functions required for DC-to-DC converters. The device consists of an internal temperature
compensated reference, comparator, controlled duty cycle.

Oscillator with an active current sense circuit, desired output voltage is determined by the equation,
Volt = 1.25 *(1 + R121 / R122), in this case, the output voltage are 5 Volts
The AIC1117 is a low dropout positive adjustable regulator with minimum of 800mA output current
capability. So it is well suited for 3.3 V and 2.5 V Regulator.
U10 as a 2.5V regulator, Desired output voltage is determined by the equation
Volt=1.25 x (1 + R124/R123)= 2.5
U11 as a 3.3V regulator, Desired output voltage is determined by the equation
Volt=1.255 x (1+ R126/R125)= 3.3

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6.2 Audio Amplifier TPA3002D2 (U7)

The TPA3002D2 is a 9-W per channel efficient, Class-D audio amplifier for driving bridged-tied stereo speakers.
TPA3002D2 can directly drive 8 ohms speaker, does not require output coupling capacitor, bootstrap capacitor,

or LC filter. Audio line-in is fed into pin 2,6 of the TPA3002D2. The output gain is controlled by pin 11. It also
provides line outputs for external headphone with a range of gain control from –56dB to 20dB.

6.3 Earphone Amplifier LM4881 (U8)

The LM4881 is a dual audio power amplifier for earphone application. It provides high quality output power
(THD at 1 KHz at 75mW continuous average output power into 32ohm load) with a minimal amount of external
components. It features thermal shutdown protection circuit and no bootstrap capacitors or snubber circuits are

necessary.

6.4 Inverter Board

This is a specific inverter for VX750 monitor backlight which converts 12Vdc to drive four cold cathode
fluorescence tubes. Electrical specification described as below.

INPUT

Rated Input Voltage 12Vdc
Input Voltage Range 11.4~12. 6Vdc
Input Current <1.96A
Off state Input Power <0.1W
On / off control Voltage 2~5.25 for on, 0~0.13 for off

OUTPUT

Rated Output Strike-on Voltage 1500~2000Vrms
Rated Output Voltage 710Vrms at 6mA
Rated Output Frequency 40~50KHz

6.5 Adapter

Rated Output Current 6~7mA

This is a general purpose AC / DC adapter which converts 90~240 Vac to a stabilized DC voltage 12 V with rated
output current of 4.16A. Electrical specification described as below.

INPUT

Rated Input Voltage 90~264Vac, 47~63Hz
Operation Input Voltage 100~240Vac, 50~60Hz
Input Current <1.5A
Inrush Current <50A @ 120Vac(Cold start)
Standby Input Voltage 12Vdc

OUTPUT

Output Voltage Regulation +/-5%
Output Ripple and Noise 120 mVp-p
Rated Output Current <4.16A
Turn-on Delay <3 seconds

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5. Adjusting Procedure

OSD Function Menu

A For Analog Input Mode

1. Main Menu

Press “1(Menu)” Button (Menu Button) to enter Main Menu:
Press Up Button to the previous page or Down Butt o n t o the next page .
Press “1(Menu)” Button to exit Main Menu.

(1) Auto Image A djust Page:

Press “Enter” Button to do auto image adjust function.
Press “1(Menu)(Menu)” Button to exit the page.

(2) Contrast/Brightnes Page:

Press “Enter” Button to enter Contrast Item.
Press “1(Menu)(Menu)” Button to exit the page.

1) Contrast Item

Press “VOL+” Button to make contrast high.
Press “VOL-“Button to make contrast low.
Press “Enter” Button to enter Brightness Item.
Press “1(Menu)(Menu)” Button to exit the item.

2) Brightness Item

Press “VOL+” Button to make brightness high.
Press “VOL-“ Button to make brightness low.
Press “Enter” Button to enter Contrast Item.
Press “1(Menu)(Menu)” Button to exit the item.

(3) Input Select Page:

Press”Enter” Button to change Digital mode.

(4) Audio Menu Page:

Press “Enter” Button to Enter Volume Page
Press “Enter” Button to Enter Mute Page

Press “1(Menu)(Menu)Button to exit the page.

Volume Item

Press “VOL+” Button to make Volume high.
Press “VOL-“Button to make Volume low.
Press “Enter” Button to enter Mute Item.
Press “1(Menu)(Menu)” Button to exit the item.

Mute Item

Press “Enter” Button to enter Volume Item.
Press “1(Menu)” Button to exit the item.

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(5) Color Adjust Page:

Press “Enter” Button to enter Color Adjust page.
Press “1(Menu)” Button to exit the page.
Press Up Button to the previous item or Down Button to the next item.

1) sRGB Item

2) 9300K Item

3) 6500K Item

4) 5400K Item

Press “Enter” Button to select current Item.
Press “1(Menu)” Button to exit current item.

5) User Color Item

Press “Enter” Button to enter User Color item.
Press “1(Menu)” Button to exit User Color item.

Red,Green,Blue Options:

Press “Enter” Button to switch among the options.
Press “1(Menu)” Button to exit the options.
Press “Vol+” Button to make current option high.
Press “Vol-“ Button to make current option low.

(6) Information Page:

Press “Entr” Button to show the information.
Press “1(Menu)” Button to exit Information page.

(7) Manual Image Adjust Page:

Press “Enter” Button to enter Manual Image Adjust page.
Press “1(Menu)” Button to exit Manual Image Adjust page.
Press Up Button to the previous item or Down Button to the next item.

1) H./V. Position Item

Press “Enter” Button to enter H./V. Position item.
Press “1(Menu)” Button to exit H./V. Position item.

a) Horizontal Position Option:

Press “Enter” Button to enter the Vertical Position option.
Press “1(Menu)” Button to exit Horizontal Position option.
Press “Vol+” Button to make current option high.
Press “Vol-“Button to make current option low

b) Vertical Position Option:

Press “Enter” Button to enter the Horizontal Position option.
Press “1(Menu)” Button to exit Vertical Position option.
Press “Vol+” Button to make current option high.
Press “Vol-“ Button to make current option low

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2) Horizontal Size Item

Press “Enter” Button to enter Horizontal Size item.
Press “1(Menu)” Button to exit Horizontal Size item.
Press “Vol+” Button to make current item high.

(8) Setup Menu Page:

Press “Enter” Button to enter Setup Menu page.
Press “1(Menu)” Button to exit Setup Menu page.
Press Up Button to the previous item or Down Button to the next item.

Press “Vol-“Button to make current item low.

3) Fine tune Item

Press “Enter” Button to enter Fine tune item.
Press “1(Menu)” Button to exit Fine tune item.
Press “Vol+” Button to make current item high.
Press “Vol-“Button to make current item low.

4) Sharpness Item

Press “Enter” Button to enter Sharpness item.
Press “1(Menu)” Button to exit Sharpness item.
Press “Vol+” Button to make current item high.
Press “Vol-“ Button to make current item low.

1) Language Select Item

Press “Enter” Button to enter Language Select item.
Press “1(Menu)” Button to exit Language Select item.
Press Up Button to the previous option or Down Button to the next option.

English,French……..Option
Press “Enter” Button to select the language.
Press “1(Menu)” Button to exit the option.

2) Resolution Notice Item

Press “Enter” Button to enter Resolution Notice item
Press “1(Menu)” Button to exit Resolution Notice item.
Enable,Disable Option
Press “Enter” Button to select the option.
Press “1(Menu)” Button to exit the option
Press Up Button to the previous option or Down Button to the next option.

3) OSD Position Item

Press “Enter” Button to enter OSD Position item.
Press “1(Menu)” Button to exit OSD Position item.

a) Horizontal Position Option

Press “Enter” Button to enter the Vertical Position option.
Press “1(Menu)” Button to exit Horizontal Position option.
Press “Vol+” Button to make current option high.
Press “Vol-“ Button to make current option low

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b) Vertical Position Option:

Press “Enter” Button to enter the Horizontal Position option.
Press “1(Menu)” Button to exit Vertical Position option.
Press “Vol+” Button to make current option high.
Press “Vol-“ Button to make current option low

(9) Memory Recall Pa ge

2. Other Menu:
(1) Contrast Dialog

4) OSD Time Out Item

Press “Enter” Button to enter OSD Time Out item.
Press “Vol+“Button to make OSD time out long.
Press “Vol-“Button to make OSD time out short.

5) OSD Background Item

Press “Enter” Button to enter OSD Background item.
Press “1(Menu)” Button to exit OSD Background item.
Enable,Disable Option
Press “Enter” Button to select the option.
Press “1(Menu)” Button to exit the option.
Press Up Button to the previous option or Down Button to the next option.

Press “Enter” Button to do the memory recall function.
Press “1(Menu)” Button to exit the page.

Press Down or Up Button to enter the Contrast Dialog.
Press “1(Menu)” Button to exit the Contrast Dialog.
Press “Enter” Button to enter the Brightness Dialog.
Press “Vol-“Button to make contrast high.
Press “Vol+“Button to make contrast low.

(2) Brightness Dialog

Press Down or Up Button to enter the Brightness Dialog.
Press “1(Menu)” Button to exit the Brightness Dialog.
Press “Enter” Button to enter the Contrast Dialog.
Press “Vol+“Button to make brightness high.
Press “Vol-“Button to make brightness low.

(3) Volume Dialog

Press “Vol+”or “Vol-“Button to enter the Volume Dialog .
(if it Mute is enable currently)
Press”Enter” Button to switch Mute Dialog
Press “1(Menu)” Button to exit the Volume Dialog.
Press “Vol-“Button to make volume low.
Press “Vol+”Button to make volume high.

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(4) Mute Dialog

Press “Vol+”or “Vol-“Button to enter the Mute Dialog
(if it Mute is disable currently).
Press”Enter” Button to switch volume Dialog

(5) Auto Image Adjust Dialog

Press “Enter” Button to do the auto image adjust function.

(6) Analog/DIGITAL Dialog

Press “Input select “ Button to switch to DIGITAL mode

B. For Digital Input Mode

Main Menu

Press “1(Menu)” Button (Menu Button) to enter Main Menu:
Press Up Button to the previous page or Down Butt o n t o the next page .
Press “1(Menu)” Button to exit Main Menu.

(1) Contrast/Brightnes Page:

Press “Enter” Button to enter Contrast Item.
Press “1(Menu)(Menu)” Button to exit the page.

1) Contrast Item

Press “VOL+” Button to make contrast high.
Press “VOL-“Button to make contrast low.
Press “Enter” Button to enter Brightness Item.
Press “1(Menu)(Menu)” Button to exit the item.

2) Brightness Item

Press “VOL+” Button to make brightness high.
Press “VOL-“ Button to make brightness low.
Press “Enter” Button to enter Contrast Item.
Press “1(Menu)(Menu)” Button to exit the item.

(2) Input Select Page:

Press”Enter” Button to change Analog mode.

(3) Audio Menu Page:

Press “Enter” Button to Enter Volume Page
Press “Enter” Button to Enter Mute Page

Press “1(Menu)(Menu)Button to exit the page.

Volume Item

Press “VOL+” Button to make Volume high.
Press “VOL-“Button to make Volume low.
Press “Enter” Button to enter Mute Item.
Press “1(Menu)(Menu)” Button to exit the item.

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Mute Item
Press “Enter” Button to enter Volume Item.
Press “1(Menu)” Button to exit the item.

(4) Color Adjust Page:

Press “Enter” Button to enter Color Adjust page.
Press Up Button to the previous item or Down Button to the next item.

1)sRGB Item

2)9300K Item

3)6500K Item

4)5400K Item

Press “Enter” Button to select current Item.
Press “1(Menu)” Button to exit current item.

5)User Color Item
Press “Enter” Button to enter User Color item.
Press “1(Menu)” Button to exit User Color item.
Red,Green,Blue Options:
Press “Enter” Button to switch among the options.
Press “1(Menu)” Button to exit the options.
Press “Vol+” Button to make current option high.
Press “Vol-“ Button to make current option low.

(5) Information Page:

Press “Entr” Button to show the information.
Press “1(Menu)” Button to exit Information page.

(6) Manual Image Adjust Page:

Press “Enter” Button to enter Manual Image Adjust page.
Sharpness Item

Press “Enter” Button to enter Sharpness item.
Press “1(Menu)” Button to exit Sharpness item.
Press “Vol+” Button to make current item high.
Press “Vol-“ Button to make current item low.

(7) Setup Menu Page:

Press “Enter” Button to enter Setup Menu page.
Press “1(Menu)” Button to exit Setup Menu page.

Press Up Button to the previous item or Down Button to the next item.

1) Language Select Item

Press “Enter” Button to enter Language Select item.
Press “1(Menu)” Button to exit Language Select item.
Press Up Button to the previous option or Down Button to the next option.
English,French……..Option

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Press “Enter” Button to select the language.
Press “1(Menu)” Button to exit the option.

2) Resolution Notice Item

3) Press “1(Menu)” Button to exit Resolution Notice ite m.

Enable,Disable Option
Press “Enter” Button to select the option.
Press “1(Menu)” Button to exit the option
Press Up Button to the previous option or Down Button to the next option.

3) OSD Position Item

Press “Enter” Button to enter OSD Position item.
Press “1(Menu)” Button to exit OSD Position item.
a) Horizontal Position Option

Press “Enter” Button to enter the Vertical Position option.
Press “1(Menu)” Button to exit Horizontal Position option.
Press “Vol+” Button to make current option high.
Press “Vol-“ Button to make current option low

b) Vertical Position Option:

Press “Enter” Button to enter the Horizontal Position option.
Press “1(Menu)” Button to exit Vertical Position option.
Press “Vol-“ Button to make current option low

4) OSD Time Out Item

Press “Enter” Button to enter OSD Time Out item.
Press “1(Menu)” Button to exit OSD Time Out item.
Press “Vol+“Button to make OSD time out long.
Press “Vol-“Button to make OSD time out short.

5) OSD Background Item

Press “Enter” Button to enter OSD Background item.
Press “1(Menu)” Button to exit OSD Background item.

Enable,Disable Option
Press “Enter” Button to select the option.
Press “1(Menu)” Button to exit the option.

(8) Memory Recall Pa ge

Press Up Button to the previous option or Down Button to the next option.

Press “Enter” Button to do the memory recall function.
Press “1(Menu)” Button to exit the page.

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3. Other Menu:
(1) Contrast Dialog

Press Down or Up Button to enter the Contrast Dialog.
Press “1(Menu)” Button to exit the Contrast Dialog.
Press “Enter” Button to enter the Brightness Dialog.
Press “Vol-“Button to make contrast high.
Press “Vol+“Button to make contrast low.

(2) Brightness Dialog

Press Down or Up Button to enter the Brightness Dialog.
Press “1(Menu)” Button to exit the Brightness Dialog.
Press “Enter” Button to enter the Contrast Dialog.
Press “Vol+“Button to make brightness high.
Press “Vol-“Button to make brightness low.

(3) Volume Dialog

Press “Vol+”or “Vol-“Button to enter the Volume Dialog .
Press”Enter” Button to switch Mute Dialog

Press “1(Menu)” Button to exit the Volume Dialog.
Press “Vol-“Button to make volume low.
Press “Vol+”Button to make volume high.

(4) Mute Dialog

Press “Vol+”or “Vol-“Button to enter the Mute Dialog
Press”Enter” Button to switch volume Dialog

(5) Auto Image Adjust Dialog

Press “Enter” Button to do the auto image adjust function.

(6) Analog/DIGITAL Dialog

Press “I

nput select “ Button to switch to Analog mode

C. Other information

Conditions for showing “No signal” or “out of Range”:

If there is no signal , it will show “No signal” information in center of the Screen

the V-Sync more than 85Hz or its resolution more than SXGA it will show

If
“Out of Range” information in Center of the Screen

How to enter factory mode and Burn-in Mode:

if you Press Enter then Power on it will enter Factory Mode
then it will add one Menu page named Factory Menu
Press “Enter “ Button Enter Factory Menu item
Then Press”Enter” Button Enter Burn Mode

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LM5ISP Update Procedure

Firmware Update Procedure

1

Equipment Needed

1.1

1.1.1 VX750 Series monitor.

1.1.2 Fixture for Firmware update.

1.1.3 VGA Cable.

1.1.4 Computer (NB or PC).

1.1.5 Firmware update program (LM5ISP.exe).

CN2 CN1

Fixture for F/W & DDC Update

1.2 Setup Procedure

1.2.1 Connect CN1 of Fixture to Printer Port of NB.

1.2.2 Connect CN2 of Fixture to VGA Cable.

1.2.3 Connect VGA Cable to Analog Input of monitor.

1.2.4 Turn on the Monitor power.

1.2.5 Copy the “LM5ISP.exe” to NB.

Cable Fixture NB

F/W or DDC Update

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1.3 LM5ISP Firmware Update

1.3.1 Run the “LM5ISP.exe” Program

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1.3.2 Select the model name of Option Page

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1.3.3 Read Firmware data from HEX File and then press “Action”

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2 DDC Update Procedure

Equipment Needed

2.1

2.1.1 VE710s/b or VX750 Series monitor.

2.1.2 Fixture for DDC update.

2.1.3 VGA Cable.

2.1.4 Computer (NB or PC).

2.1.5 DDC update program (LM5ISP.exe).

2.2 Setup Procedure

2.2.1 Connect CN1 of Fixture to Printer Port of NB.

2.2.2 Connect CN2 of Fixture to VGA Cable.

2.2.3 Connect VGA Cable to Analog Input of monitor.

2.2.4 Turn on the Monitor power.

2.2.5 Copy the “LM5ISP.exe” to NB.

Cable Fixture NB

F/W or DDC Update

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2.3 LM5ISP DDC Update

2.3.1 Run the “LM5ISP.exe” Program

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2.3.2 Select the model name of Option Page

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2.3.3 Read DDC data from Monitor.

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2.3.4 Key in the New Serial Number and then press “Enter” key

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6. Trouble Shooting Flow Chart

1. Speaker no sound

Pop out au dio me nu & push E nte r Ke y
to quit mute mode

Check p ower supply circuit

Repair Open / short

Yes

No

Yes

Speaker no sound

Enter Mute Mode?

No

Power suppl y of U7 OK?

Yes

Short or open soldering of U7?

Check Q10

Chang e R11 or C107

Check Q9 & Pin 74 of U3

Yes

No

Yes

No

Lo w lev e l a t P in of U7?

No

R11 & C 107 O K?

Yes

Pin 1 of U7 Always < 1V?

No

Change U7

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2. Display color abnormal:

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3. Monitor can not power on

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4. Monitor white screen

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5. Monitor black screen

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6. Audio noise:

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7. Analog input: always shows NO SIGNAL:

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8. Digital input: always shows NO SIGNAL

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Screw ( To assembly the cabinet)

button board ass'y (power key)

Screw ( To assembly the cabinet)

button board ass'y (power key)

VX750-1 VSA-M RSPL

VX750-1 VSI-P RSPL

7. Recommended Spare Parts List

VX750-1 RSPL

Item Reference P/N ViewSonic P/N Description of revision(s)

11c 26L7VSAVS09 C-BS-0303-0508 Removed to RSPL

11d 38L7VEBVS02 PL-PS-0715-0981 Added to RSPL

12c MF30050IBJ6 M-SCW-0824-0725 Removed to RSPL

12d 34L7VSSVS05 PL-PS-0715-0982 Added to RSPL

13c MM30050IBJ3 M-SCW-0824-0728 Removed to RSPL

13d 27L7VCSVS05 B-MB-0201-0827 Added to RSPL

14c MM30060IBJ8 M-SCW-0824-6800 Removed to RSPL

14d MF30070BBJ1 M-SCW-0824-6822 Added to RSPL

15c MM40060BBJ5 M-SCW-0824-6803 Removed to RSPL
17d DK500XSU008 E-FS-0410-0114 Added to RSPL
18d DM333181G97 A-PC-0106-0224 Added to RSPL

Item Revision History ViewSonic P/N Ref. P/N Description Location Universal number# Lead time Q'ty

1 B-MB-0201-2728 21L7VSB0030 Main Board main board 4 weeks 1
2 B-SB-0221-0596 AS022172511 Inverter inverter 4 weeks 1
3 P-BX-0601-0936 HFL7V003010 Carton carton 4 weeks 1
4 P-FM-0602-0845 HBL7V003016 Polyfrom (left) polyfrom 4 weeks 1
5 P-FM-0602-0846 HBL7V004012 Polyform (right) polyfrom 4 weeks 1
6 M-MS-0808-9158 HAL7V002019 EPE bag EPE bag 4 weeks 1
7 M-LB-0813-0920 HCL7V007012 ID label ID label 4 weeks 1
8 A-CD-VX750 HGL7V002014 CD wizard CD 4 weeks 1
9 M-CV-0830-2529 33L7VLSVB03 Cover sub-ass'y cover 4 weeks 1

10 C-FP-0301-9930 32L7VLSVS06 bezel sub-ass'y bezel 4 weeks 1

11c Removed 04/13/04 C-BS-0303-0508 26L7VSAVS09 Base Ass'y Base 4 weeks 1
11d Added 04/13/04 PL-PS-0715-0981 38L7VEBVS02 Enter base ass'y enter base 4 weeks 1
12c Removed 04/13/04 M-SCW-0824-0725 MF30050IBJ6 Screw ( To assembly the cabinet) Screw 4 weeks 10
12d Added 04/13/04 PL-PS-0715-0982 34L7VSSVS05 Stand sub-ass'y stand 4 weeks 1
13c Removed 04/13/04 M-SCW-0824-0728 MM30050IBJ3 Screw ( To assembly the cabinet) Screw 4 weeks 3
13d Added 04/13/04 B-MB-0201-0827 27L7VCSVS05 Chassis ass'y chassis 4 weeks 1
14c Removed 04/13/04 M-SCW-0824-6800 MM30060IBJ8 Screw ( To assembly the cabinet) Screw 4 weeks 14
14d Added 04/13/04 M-SCW-0824-6822 MF30070BBJ1 Screw ( To assembly the cabinet) screw 4 weeks 4
15c Removed 04/13/04 M-SCW-0824-6803 MM40060BBJ5 Screw ( To assembly the cabinet) Screw 4 weeks 6

15 M-LCD-0826-0195 AA17EL07063 LCD panel panel QD17EL07(SXGA) REV.03 4 weeks 1

16 A-AD-0114-0205 AG12042CK00 Adapter AC adaptor ADP-50GH BB 4 weeks 1

17d Added 04/13/04 E-FS-0410-0114 DK500XSU008 Fuse fuse 4 weeks 1
18d Added 04/13/04 A-PC-0106-0224 DM333181G97 Power Cord 3P 1.8M(USA) power cable 4 weeks 1

19 B-CB-0206-0171 23L7VBB0000 button board ass'y (function) function key ass'y 4 weeks 1

20 B-CB-0206-0172 23L7VBB0018 button board ass'y (power key) power key ass'y 4 weeks 1

Recent Revision(s)

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

1 B-MB-0201-2728 21L7VSB0030 Main Board main board 4 weeks 1
2 B-SB-0221-0596 AS022172511 Inverter inverter 4 weeks 1
3 P-BX-0601-0936 HFL7V003010 Carton carton 4 weeks 1
4 P-FM-0602-0845 HBL7V003016 Polyfrom (left) polyfrom 4 weeks 1
5 P-FM-0602-0846 HBL7V004012 Polyform (right) polyfrom 4 weeks 1
6 M-MS-0808-9158 HAL7V002019 EPE bag EPE bag 4 weeks 1
7 M-LB-0813-0920 HCL7V007012 ID label ID label 4 weeks 1
8 A-CD-VX750 HGL7V002014 CD wizard CD 4 weeks 1

9 M-CV-0830-2529 33L7VLSVB03 Cover sub-ass'y cover 4 weeks 1
10 C-FP-0301-9930 32L7VLSVS06 bezel sub-ass'y bezel 4 weeks 1
11 PL-PS-0715-0981 38L7VEBVS02 Enter base ass'y enter base 4 weeks 1
12 PL-PS-0715-0982 34L7VSSVS05 Stand sub-ass'y stand 4 weeks 1

13 B-MB-0201-0827 27L7VCSVS05 Chassis ass'y chassis 4 weeks 1
14 M-SCW-0824-6822 MF30070BBJ1

15 M-LCD-0826-0195 AA17EL07063 LCD panel panel QD17EL07(SXGA) REV.03 4 weeks 1
16 A-AD-0114-0205 AG12042CK00 Adapter AC adaptor ADP-50GH BB 4 weeks 1
17 E-FS-0410-0114 DK500XSU008 Fuse fuse 4 weeks 1
18 A-PC-0106-0224 DM333181G97 Power Cord 3P 1.8M(USA) power cable 4 weeks 1
19 B-CB-0206-0171 23L7VBB0000 button board ass'y (function) function key ass'y 4 weeks 1
20 B-CB-0206-0172 23L7VBB0018

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

1 B-MB-0201-2728 21L7VSB0030 Main Board main board 4 weeks 1

2 B-SB-0221-0596 AS022172511 Inverter inverter 4 weeks 1

3 P-BX-0601-0936 HFL7V003010 Carton carton 4 weeks 1

4 P-FM-0602-0845 HBL7V003016 Polyfrom (left) polyfrom 4 weeks 1

5 P-FM-0602-0846 HBL7V004012 Polyform (right) polyfrom 4 weeks 1

6 M-MS-0808-9158 HAL7V002019 EPE bag EPE bag 4 weeks 1

7 M-LB-0813-0920 HCL7V007012 ID label ID label 4 weeks 1

8 A-CD-VX750 HGL7V002014 CD wizard CD 4 weeks 1

9 M-CV-0830-2529 33L7VLSVB03 Cover sub-ass'y cover 4 weeks 1
10 C-FP-0301-9930 32L7VLSVS06 bezel sub-ass'y bezel 4 weeks 1
11 PL-PS-0715-0981 38L7VEBVS02 Enter base ass'y enter base 4 weeks 1
12 PL-PS-0715-0982 34L7VSSVS05 Stand sub-ass'y stand 4 weeks 1
13 B-MB-0201-0827 27L7VCSVS05 Chassis ass'y chassis 4 weeks 1
14 M-SCW-0824-6822 MF30070BBJ1
15 M-LCD-0826-0195 AA17EL07063 LCD panel panel QD17EL07(SXGA) REV.03 4 weeks 1
16 A-AD-0114-0205 AG12042CK00 Adapter AC adaptor ADP-50GH BB 4 weeks 1
17 E-FS-0410-0114 DK500XSU008 Fuse fuse 4 weeks 1
18 A-PC-0106-0224 DM333181G97 Power Cord 3P 1.8M(USA) power cable 4 weeks 1
19 B-CB-0206-0171 23L7VBB0000 button board ass'y (function) function key ass'y 4 weeks 1
20 B-CB-0206-0172 23L7VBB0018

screw 4 weeks 4

power key ass'y 4 weeks 1

screw 4 weeks 4

power key ass'y 4 weeks 1

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Screw ( To assembly the cabinet)

button board ass'y (power key)

VX750-1 VSE-E RSPL

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

1 B-MB-0201-2728 21L7VSB0030 Main Board main board 4 weeks 1

2 B-SB-0221-0596 AS022172511 Inverter inverter 4 weeks 1

3 P-BX-0601-0936 HFL7V003010 Carton carton 4 weeks 1

4 P-FM-0602-0845 HBL7V003016 Polyfrom (left) polyfrom 4 weeks 1

5 P-FM-0602-0846 HBL7V004012 Polyform (right) polyfrom 4 weeks 1

6 M-MS-0808-9158 HAL7V002019 EPE bag EPE bag 4 weeks 1

7 M-LB-0813-0920 HCL7V007012 ID label ID label 4 weeks 1

8 A-CD-VX750 HGL7V002014 CD wizard CD 4 weeks 1

9 M-CV-0830-2529 33L7VLSVB03 Cover sub-ass'y cover 4 weeks 1
10 C-FP-0301-9930 32L7VLSVS06 bezel sub-ass'y bezel 4 weeks 1
11 PL-PS-0715-0981 38L7VEBVS02 Enter base ass'y enter base 4 weeks 1
12 PL-PS-0715-0982 34L7VSSVS05 Stand sub-ass'y stand 4 weeks 1
13 B-MB-0201-0827 27L7VCSVS05 Chassis ass'y chassis 4 weeks 1
14 M-SCW-0824-6822 MF30070BBJ1
15 M-LCD-0826-0195 AA17EL07063 LCD panel panel QD17EL07(SXGA) REV.03 4 weeks 1
16 A-AD-0114-0205 AG12042CK00 Adapter AC adaptor ADP-50GH BB 4 weeks 1
17 E-FS-0410-0114 DK500XSU008 Fuse fuse 4 weeks 1
18 A-PC-0106-0227 DM333181801 Power Cord 3P 1.8M(EU) power cable 4 weeks 1
19 B-CB-0206-0171 23L7VBB0000 button board ass'y (function) function key ass'y 4 weeks 1
20 B-CB-0206-0172 23L7VBB0018

screw 4 weeks 4

power key ass'y 4 weeks 1

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VX750-1 BOM

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

1 #N/A
2 #N/A
3 #N/A
4 #N/A
5 #N/A
6 E-IC-0401-2651
7 #N/A
8 E-IC-0401-2652

9 #N/A
10 #N/A
11 E-Q-0402-1582
12 #N/A
13 #N/A

14 #N/A
15 #N/A

16 #N/A
17 #N/A
18 #N/A
19 #N/A
20 #N/A
21 #N/A
22 #N/A
23 #N/A
24 #N/A
25 #N/A
26 #N/A

27 #N/A
28 #N/A

29 #N/A
30 #N/A

31 #N/A
32 #N/A
33 #N/A

34 #N/A
35 #N/A
36 #N/A
37 #N/A
38 E-IC-0401-2653
39 E-IC-0401-2654
40 #N/A
41 E-Q-0402-1580
42 E-D-0403-2082
43 E-D-0403-2084
44 #N/A
45 #N/A
46 #N/A
47 #N/A
48 #N/A
49 #N/A
50 #N/A
51 #N/A
52 E-FS-0410-0114

53 #N/A
54 #N/A
55 #N/A
56 #N/A
57 #N/A
58 #N/A
59 #N/A
60 #N/A
61 #N/A
62 #N/A

1L7VZZZVS19 L7VX LCD MONITOR (VSC VX750)
21L7VSB0030 L7VX SCALAR/B ASSY(MST) 1
31L7VSS0032 L7VX SCALAR/B S/S ASSY(MST) 1
DAL7VXTH2C1 PCB L7VX SCALER/B(2L,108*96,REVC) 1
AJ08131CC06 IC(128P) MST8131A(135MHZ,FQFP) U3 1
AKE3A8S0Y01 IC,EEPROM(8P) 24LC16B/SN(2K*8,100KHZ) U5 1
AJ00312VP18 IC(44P) MTV312MV64AJ(12MHZ,PLCC) U6 1
AKE3D8Q0A00 IC EEPROM(8P)AT24C21-10SI-2.5(128*8,10NS U2 1
AKE3D8S0Y11 IC,EEPROM(8P) 24LC21A/SN(128*8,100KHZ) U2 1
BA039040Z01 TRANSISTOR,SMD MMBT3904(40V,200MA) Q10 1
BAN70020T04 TRANSISTOR MOSFET 2N7002(60V,0.115A) Q1,Q4,Q9 3
CH01206J906 CAPACITOR CHIP 12P 50V(+-5%,NPO,0603) C64,C65,C66 3
CH31006K919 CAP CHIP 0.01U 50V(+-10%,X7R,0603) C7,C90,C91,C110,C111 5

C14,C18,C19,C20,C21,C22,C23,C24,C26,C27,
C29,C31,C32,C34,C35,C37,C38,C39,C40,C43,

CH41004Z931 CAP CHIP 0.1U,25V(+80-20%,Y5V,0603)

CH51004MA32 CAPACITOR CHIP 1UF 25V(+-20%,Y5V,0805) C45,C68,C79,C93,C108,C117 6
CH51001K991 CAP CHIP 1U 6.3V(+-10%,X5R,0603)
CH02206J909 CAPACITOR CHIP 22P 50V(+-5%,NPO,0603) C41,C42,C55,C56,C57,C58 6

CH11206J908 CAPACITOR CHIP 120P 50V(+-5%,NPO,0603) C122 1
CH12206J901 CAPACITOR CHIP 220P 50V(+-5%,NPO,0603) C86,C87,C88,C89,C107 5
CH21006K917 CAP CHIP 1000P 50V(+-10%,X7R,0603) C81,C82,C115,C116,C125,C137 6
CH22206K917 CAP CHIP 2200P 50V(+-10%,X7R,0603) C74,C124 2
CH34703K916 CAP CHIP 0.047UF 16V(+-10%,X7R,0603) C1,C3,C4,C6,C8,C10 6
CH41004MA14 CAPACITOR CHIP 0.1U 25V(+-20%,X7R,0805) C60,C119,C120,C121 4
CS00003J900 RESISTOR CHIP 0 1/10W+-5%(0603) D9,L4,R77,R98,R99 5
CS02203J902 RES CHIP 22 1/10W +-5%(0603) R33,R34,R36,R37,R53,R54,R57,R63,R66 9
CS07503F905 RESISTOR CHIP 75 1/10W +-1%(1608) R2,R5,R9 3

CS11003J904 RESISTOR CHIP 100 1/10W +-5%(0603)

CS21003F904 RESISTOR CHIP 1K,1/10W,+-1%(0603) R122 1
CS21003J906 RES CHIP 1K 1/10W +-5%(0603) L15,L16,L17,L18,L19,L20,L21,R79,R96,R120 10
CS24703J900 RES CHIP 4.7K 1/10W +-5%(0603) R82,R84,R85,R134 4

CS31003J908 RES CHIP 10K 1/10W +-5%(0603)

CS38203J904 RES CHIP 82K 1/10W +-5%(0603) R91,R106 2
CS32003F909 RES CHIP 20K 1/10W +-1%(0603) R105,R107,R109,R112 4

CX0P121R000 EMI FILTER CHIP HI1206P121R-00(120 6A)

AL004881011 IC(8P)LM4881MM(MSOP) U8 1
AL003002H04 IC(48P)TPA3002D2(HTQFP) U7 1
CS41203F905 RES CHIP 120K 1/10W +-1%,0603 R104,R111 2
AL001117078 IC(3P) AIC1117CY(SOT-223) U10,U11 2
AL001563001 IC(8P) AIC1563CS(SOP8) U9 1
BA039060Z01 TRANSISTOR,SMD MMBT3906(40V,200MA) Q2,Q3,Q12 3
BAM9410YZ02 TRANSISTOR MOSFET SI9410DY(30V,7A) Q11 1
BC1SS355Z05 DIODE SMD 1SS355(80V,100MA) D33,D34 2
BCRB081LZ02 DIODE SMD RB081L-20(20V,5.0A,VF:0.45V) D35 1
CS00006J205 RESISTOR CHIP 0 1/4W+-5%(3216) R116 1
CS04703J906 RES CHIP 47 1/10W +-5%(0603) R117 1
CS12003F905 RESISTOR CHIP 200 1/10W+-1%(0603) R123,R124,R125 3
CS13303F909 RESISTOR CHIP 330 1/10W +-1%(0603) R126 1
CS23003F900 RES CHIP 3K 1/10W +-1%(0603) R121 1
CS42403F905 RESISTOR CHIP 240K 1/10W,+-1%(0603) R119 1
CS43303J906 RES CHIP 330K 1/10W +-5%(0603) R118 1
CS22203J906 RES CHIP 2.2K 1/10W +-5%(0603) R23,R24,R58,R60,R127,R130 6
DK500XSU008 FUSE SMD 5A,125V(SLOW,UL/CSA) FUSE1 1

CX201209805 EMI FILTER CHIP FBM-11-201209-121A40 L9,L10,L11,L12,L13,L14,L22,L23,R87 9

CS22003J909 RES CHIP 2K 1/10W +-5%(0603) R12,R15,R45,R46 4
CS13903J902 RES CHIP 390 1/10W +-5%(0603) R30 1
BAM23010Z05 TRANSISTOR MOSFET SI2301DS(-12V,-2.3A) Q6 1
BA001440Z87 TRANSISTOR SMD PDTC144EU (50V,30MA) Q8 1
BCBAT54CZ02 DIODE SMD BAT54C(30V,200MA,SCHOTTKY) D12,D43 2
CH42206Z932 CAP CHIP 0.22U,50V(+80%-20%,Y5V,0603) C73 1
CS34703J901 RES CHIP 47K 1/10W +-5%(0603) R49,R100,R101 3
CS26803J909 RESISTOR CHIP 6.8K 1/10W +-5%(1608) R133 1
CS03303J909 RES CHIP 33 1/10W +-5%(0603) R1,R4,R8,R19 4

C44,C46,C47,C48,C49,C50,C51,C52,C53,C67,
C75,C83,C84,C100,C104,C109,C113,C114,C1
18,C126,C134,C141

C62,C94,C95,C96,C97,C98,C99,C102,C103,C
105,R73

L1,L6,L8,R7,R11,R13,R14,R20,R21,R25,R26,
R31,R32,R47,R48,R67,R80,R131

R38,R39,R40,R41,R42,R43,R44,R51,R55,R59,
R61,R68,R71,R72,R74,R92,R95,R97,R102,R1
03,R113,R114,R115,R129,R140

L24,L25,L31,L32,L33,L34,L35,L36,L37,L38,L
39,L40,L42,L44,L45,L46

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42

11

18

25

16

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

63 #N/A

64 #N/A
65 #N/A
66 #N/A
67 #N/A
68 #N/A
69 #N/A
70 #N/A
71 E-X-0415-0128

72 #N/A
73 #N/A
74 #N/A
75 #N/A
76 #N/A
77 #N/A
78 M-MS-0808-7694
79 #N/A
80 #N/A
81 #N/A
82 M-MS-0808-7693
83 #N/A
84 #N/A
85 M-MS-0808-7698
86 #N/A
87 E-L-0407-1562
88 E-L-0407-1563
89 E-C-0404-4904
90 #N/A
91 B-SB-0221-0596
92 #N/A
93 #N/A
94 M-MS-0808-9582
95 PL-BT-0706-0127
96 #N/A
97 #N/A
98 #N/A

99 #N/A
100 M-MS-0808-7693
101 PL-BT-0706-0127
102 #N/A
103 #N/A
104 C-FP-0301-9937
105 PL-BT-0706-0170
106 M-CV-0830-2554
107 M-MS-0808-9594
108 M-MS-0808-9595
109 M-CV-0830-2558
110 M-LB-0813-0744
111 PL-PS-0715-0981
112 PL-BT-0706-0171
113 PL-BT-0706-0172
114 PL-BT-0706-0173
115 M-MS-0808-9596
116 M-MS-0808-9597
117 M-BK-0805-0085
118 M-BK-0805-0086
119 M-BK-0805-0087
120 M-BK-0805-0088
121 M-MS-0808-9598
122 M-SCW-0824-0725
123 M-SCW-0824-0728
124 M-SCW-0824-6800
125 M-SCW-0824-6803
126 M-LCD-0826-0195
127 M-MS-0808-8984
128 M-MS-0808-9599
129 M-MS-0808-9600
130 M-LB-0813-0894
131 M-MS-0808-9601
132 M-MS-0808-9602
133 M-MS-0808-9246
134 M-MS-0808-8986
135 M-SCW-0824-6760
136 #N/A
137 #N/A

CS-1993F907 RES CHIP 4.99 1/10W +-1%(0603) R142,R143,R144,R145,R146,R147,R148,R149 8

CS-4993F905 RES CHIP 4.99 1/10W +-1%(0603) R142,R143,R144,R145,R146,R147,R148,R149 8
CX000300104 EMI FILTER CHIP FCM1608C-300T06 30,600MA L2,L3,L7 3

CS06803J905 RESISTOR CHIP 68 1/10W +-5%(1608) R3,R6,R10 3
CH03306J905 CAPACITOR CHIP 33P 50V(+-5%,NPO,0603) C11,C13 2
CS41003F908 RESISTOR CHIP 100K 1/10W+-1%(0603) R78 1
CS25603J909 RES CHIP 5.6K 1/10W +-5%(0603) R83 1
CS12203J904 RES CHIP 220 1/10W +-5%(0603) R81 1
BG614318D55 XTAL DIP 14.318MHZ(+-30PPM,07010-X-136-2 X1 1

CC62204MD23 CAP ELEC 22U 25V(+-20%,105C,5*11,2000HR)
CC71004MD68 CAP ELEC 100U 25V +-20%,105C,6*11,LESR C85,C92,C128,C129,C130,C131 6

CC73303MD51 CAP ELEC 330U 16V(+-20%,105C,8*11,2000HR C61,C76,C123 3
DFDI24FR043 CONN DIP DVI 24P 3R FR(P1.905,H10.04) CN2 1
DFDS15FR050 CONN D-SUB 15P 3R FR,P1.15,H12.55,NO SRW CN1 1
DFHD08MR301 CONN DIP HEADER 8P 1R MR(P2.0,H4.1) CN3 1
DFHD06MR093 CONN DIP HEADER 6P 1R MR(P2.5,H4.1) CN5 1
DFHD30MR259 CONN DIP HEADER 30P 2R MR(P2.0,H4.0) CN7 1
DFHD03MR081 CONN DIP HEADER 3P 1R MR(P2.0,H4.1) CN13 1
DFPJ05FR145 CONN DIP PHONE JACK 5P FR(H10)248C CN10 1
DFHD04MR124 CONN DIP HEADER 4P 1R MR(P2.0,H4.1) CN6 1
DFHD02MR192 CONN DIP HEADER 2P 1R MR(P2.0,H4.1) CN14 1
DFPJ06MS123 CONN PHONE JACK 6P MS(H5.0)SHLD CN11 1
DFPJ05FR137 CONN DIP PHONE JACK 5P FR(H10) CN12 1
DFPJ03MR336 CONN POWER JACK 3P MR CN15 1
CWK5BR6H019 FERRITE CORE K5B R6H 6*10*0.85-2TS-B L41 1
DC04725K002 CHOKE COIL 47UH(2.5A,+-10%,T07473) L43 1
CC81001MD71 CAP ELEC DIP 1000U6.3V +-20% 105C 8*11.5 C127 1
BG611059319 CRYSTAL DIP 11.0592MHZ(+-30PPM,49/US) X2 1
AS022172511 INV MODULE(TDK)L7VX(12V,V=720V,I=7MA,A1A 1
23L7VBB0000 L7VX BUTTON/B ASSY (FUNCTION KEY) 1
DAL7VXTB2D1 PCB(BUTTON-1)L7VX TB(2L,122*20,REVD) 1
DDL7VXTH004 CABLE ASSY L7VX MB-BUTTON1(8P,REV1A) CN1 1
DHP0002B108 SWITCH PUSH BUTTON(PT-002-B1,50MA,12V SW1,SW2,SW3,SW4,SW5,SW6 6
DHP0004A102 SWITCH PUSH BUTTON(PT-004-A1,50MA,12V) SW7 1
23L7VBB0018 L7VX BUTTON/B ASSY (POWER KEY) 1
BEBY0002DA0 LED(DIP) BLUE/YELLOW(L-130WCP/1QBDN1XW) LED1,LED2 2
DAL7VTB12D3 PCB(BUTTON-2)L7VX TB(2L,50*12,REVD) 1
DFHD04MR124 CONN DIP HEADER 4P 1R MR(P2.0,H4.1) CN2 1
DHP0002B108 SWITCH PUSH BUTTON(PT-002-B1,50MA,12V SW1 1
24L7VLAVS00 L7VX LCD BEZEL ASSY 1
32L7VLSVS06 L7VX LCD BEZEL SUB ASSY 1
EAL7V004011 LCD BEZEL L7VX(EAL7V004,REV3A) 1
EBL7V008018 FUNCTION BUTTON L7VX(EBL7V008,REV3A) 2
EBL7V012015 POWER COVER L7VX(EBL7V012,REV3A) 1
EBL7V013011 LENS LED L7VX(EBL7V013,REV3A) 1
EBL7V014018 POWER KEY L7VX(EBL7V014,REV3A) 1
FAL7V008017 SPEAKER COVER L7VX(FAL7V008,REV3A) 2
HCL7V001014 LOGO LABEL(HCL7V001,REV3A) 1
38L7VEBVS02 L7VX ENTER BASE ASSY 1
EBL7V009014 ENTER BUTTON L7VX(EBL7V009,REV3A) 1
EBL7V011019 BASE ENTER L7VX(EBL7V011,REV3A) 1
EBL7V010012 CURSOR BUTTON L7VX(EBL7V010,REV3A) 1
DN0QT120009 SPEAKER ASSY L7VX FG-QT120B 5W*1 1
DN0QT120106 SPEAKER ASSY L7VX FG-QT120A 5W*1 1
FAL7V002019 LCD BKT(L) L7VX(FAL7V002,REV3A) 1
FAL7V003015 LCD BKT(R) L7VX(FAL7V003,REV3A) 1
FAL7V004011 SCALAR BKT UPPER L7VX(FAL7V004,REV3A) 1
FAL7V005018 SCALAR BKT DOWN L7VX(FAL7V005,REV3A) 1
FBL7V012015 INV SHIELDING L7VX(FBL7V012,REV3A) 1
MF30050IBJ6 SCREW F3*5-I(NI) 8
MM30050IBJ3 SCREW M3.0*5.0-I(NI) 14
MM30060IBJ8 SCREW M3.0*6.0-I(NI) 4
MM40060BBJ5 SCREW M4.0*6.0-B(NI) 6
AA17EL07063 LCD(TFT) 17" QD17EL07 REV:03 1
FCL70004010 LCD MYLAR L70L-E(FCL70004,REV3A) 1
FCL7V013012 AL FOIL L7VX (FCL7V013,REV3A) 4
FCL7V014019 FILM BEZEL L7VX (FCL7V014,REV3A) 1
HCL7V005010 WARNING LABEL, INVERTOR(HCL7V005,3A) 1
FBL7V030013 SCALAR TOP SHIELD L7VX(FBL7V030,R3A) 1
FBL7V031010 SCALAR BOTTOM SHIELD L7VX(FBL7V031,R3A) 1
GBLM7003017 GASKET-3 LM7S(GBLM7003,REV3A) 5
MBLI1004018 IO NUT LI1(MBLI1004,REV3A) 4
MS30060IM18 SCREW F3*6-I(NI) 2
25L7VLCVS01 L7VX LCD COVER ASSY 1
33L7VLSVB03 L7VX LCD COVER SUB ASSY 1

C17,C25,C28,C30,C33,C36,C54,C80,C101,C1
06,C112

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11

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

138 C-BC-0302-0605
139 M-CV-0830-2484
140 M-BK-0805-0089
141 M-SCW-0824-0725
142 M-MS-0808-7709
143 M-SCW-0824-6797
144 M-SCW-0824-6840
145 #N/A
146 #N/A
147 M-SCW-0824-6843
148 #N/A
149 M-MS-0808-9604
150 M-MS-0808-7690
151 M-MS-0808-9605
152 M-MS-0808-9606
153 M-SCW-0824-0725
154 #N/A
155 A-AD-0114-0205
156 #N/A
157 A-VC-0101-0294
158 A-PC-0106-0224
159 #N/A
160 M-MS-0808-9158
161 P-FM-0602-0845
162 P-FM-0602-0846
163 M-LB-0813-0747
164 M-LB-0813-0745
165 M-LB-0813-0920
166 #N/A
167 P-BX-0601-0936
168 A-CD-VX750
169 #N/A
170 #N/A

EAL7V005018 BACK COVER L7VX(EAL7V005,REV3A) 1
FBL7V007011 KENSINGTON CAP(FBL7V007,REV3A) 1
FBL7V011019 VESA BKT L7VX(FBL7V011,REV3A) 4
MF30050IBJ6 SCREW F3*5-I(NI) 1
GAL7V004011 RUBBER PAD REAR(GAL7V004,REV3A) 4
MF40080BJ29 SCREW F4.0*8-B(BNI) 4
MM40080IBJ9 SCREW M4.0*8.0-I(NI) 2
26L7VSAVS09 L7VX STAND ASSY 1
34L7VSSVS05 L7VX STAND SUB ASSY 1
MM40200IBJ0 SCREW M4.0*20-I(NI) 4
27L7VCSVS05 L7VX CHASSIS ASSY 1
DDL7VXLC004 CABLE ASSY L7VX MB-LCD(30P,REV1A) 1
DD0LM7IV008 CABLE ASSY LM7S INVERTER(6P,REV1A) 1
DDL7VXTH101 CABLE ASSY L7VX MB-BUTTON2(4P,REV1A) 1
FBL7V013011 FUNCTION PCB BKT L7VX(FBL7V013,REV3A) 2
MF30050IBJ6 SCREW F3*5-I(NI) 2
28L7VPKVS07 L7VX PACKING ASSY 1
AG12042CK00 ADP 12V 4.2A ADP-50GH BB 100~240V 1A1A 1
DD0L7VPC201 CABLE ASSY L7V1.8M PC-MONITOR (REV3A) 1
DD0L7VPC103 CABLE ASSY L7V MB-VGA(15/15P,REV1A) 1
DM333181G97 POWER CORD 3P 1.8M(USA)V04VS35001218000 1
EAL7V015013 I/O COVER (C) L7VX(EAL7V015,R3A) 1
HAL7V002019 EPE BAG L7VX(HAL7V002,REV3A) 1
HBL7V003016 END CAP(L) L7VX(HBL7V003,REV3A) 1
HBL7V004012 END CAP(R) L7VX(HBL7V004,REV3A) 1
HCL7V004013 CORE LABEL(HCL7V004,REV3A) 1
HCL7V002011 SERIAL LEBAL(HCL7V002,REV3A) 1
HCL7V007012 ID LABEL L7VX(HCL7V007,REV3A) 1
HCL7V019011 CARTON LABEL L7VC(HCL7V019,REV3B) 1
HFL7V003010 CARTON L7VX(HFL7V003,REV3A) 1
HGL7V002014 USER MANUAL &CD RAM L7VX 1
HFL7V007015 COVER CARTON L7VX (HFL7V007,REV3B) 0.063
JXLM5003011 HANDLE LM5S(JXLM5003,REV 3B) 1

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8. Exploded Diagram And Spare Parts List

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VX750-1 Exploded Part List

Item View Sonic P/No Part Number Part Description Qty

1 B-MB-0201-2728 21L7VSB0030 L7VX SCALAR/B ASSY(MST) 1
2 B-SB-0221-0596 AS022172511 INV MODULE(TDK)L7VX(12V,V=720V,I=7MA,A1A 1
3 B-CB-0206-0171 23L7VBB0000 L7VX BUTTON/B ASSY (FUNCTION KEY) 1
4 B-CB-0206-0172 23L7VBB0018 L7VX BUTTON/B ASSY (POWER KEY) 1
5 C-FP-0301-9937 EAL7V004011 LCD BEZEL L7VX(EAL7V004,REV3A) 1
6 PL-BT-0706-0170 EBL7V008018 FUNCTION BUTTON L7VX(EBL7V008,REV3A) 2
7 M-CV-0830-2554 EBL7V012015 POWER COVER L7VX(EBL7V012,REV3A) 1
8 M-MS-0808-9594 EBL7V013011 LENS LED L7VX(EBL7V013,REV3A) 1

9 M-MS-0808-9595 EBL7V014018 POWER KEY L7VX(EBL7V014,REV3A) 1
10 M-CV-0830-2558 FAL7V008017 SPEAKER COVER L7VX(FAL7V008,REV3A) 2
11 M-LB-0813-0744 HCL7V001014 LOGO LABEL(HCL7V001,REV3A) 1
12 PL-BT-0706-0171 EBL7V009014 ENTER BUTTON L7VX(EBL7V009,REV3A) 1
13 PL-BT-0706-0172 EBL7V011019 BASE ENTER L7VX(EBL7V011,REV3A) 1
14 PL-BT-0706-0173 EBL7V010012 CURSOR BUTTON L7VX(EBL7V010,REV3A) 1
15 M-MS-0808-9596 DN0QT120009 SPEAKER ASSY L7VX FG-QT120B 5W*1 1
16 M-MS-0808-9597 DN0QT120106 SPEAKER ASSY L7VX FG-QT120A 5W*1 1
17 M-BK-0805-0085 FAL7V002019 LCD BKT(L) L7VX(FAL7V002,REV3A) 1
18 M-BK-0805-0086 FAL7V003015 LCD BKT(R) L7VX(FAL7V003,REV3A) 1
19 M-BK-0805-0087 FAL7V004011 SCALAR BKT UPPER L7VX(FAL7V004,REV3A) 1
20 M-BK-0805-0088 FAL7V005018 SCALAR BKT DOWN L7VX(FAL7V005,REV3A) 1
21 M-MS-0808-9598 FBL7V012015 INV SHIELDING L7VX(FBL7V012,REV3A) 1
22 M-SCW-0824-0725 MF30050IBJ6 SCREW F3*5-I(NI) 11
23 M-SCW-0824-0728 MM30050IBJ3 SCREW M3.0*5.0-I(NI) 14
24 M-SCW-0824-6800 MM30060IBJ8 SCREW M3.0*6.0-I(NI) 4
25 M-SCW-0824-6803 MM40060BBJ5 SCREW M4.0*6.0-B(NI) 6
26 M-LCD-0826-0195 AA17EL07063 LCD(TFT) 17" QD17EL07 REV:03 1
27 M-MS-0808-8984 FCL70004010 LCD MYLAR L70L-E(FCL70004,REV3A) 1
28 M-MS-0808-9599 FCL7V013012 AL FOIL L7VX (FCL7V013,REV3A) 4
29 M-MS-0808-9600 FCL7V014019 FILM BEZEL L7VX (FCL7V014,REV3A) 1
30 M-LB-0813-0894 HCL7V005010 WARNING LABEL, INVERTOR(HCL7V005,3A) 1
31 M-SCW-0824-6760 MS30060IM18 SCREW F3*6-I(NI) 2
32 M-MS-0808-9601 FBL7V030013 SCALAR TOP SHIELD L7VX(FBL7V030,R3A) 1
33 M-MS-0808-9602 FBL7V031010 SCALAR BOTTOM SHIELD L7VX(FBL7V031,R3A) 1
34 M-MS-0808-9246 GBLM7003017 GASKET-3 LM7S(GBLM7003,REV3A) 4
35 M-MS-0808-8986 MBLI1004018 IO NUT LI1 (MBLI1004,REV3A) 4
36 C-BC-0302-0605 EAL7V005018 BACK COVER L7VX(EAL7V005,REV3A) 1
37 M-CV-0830-2484 FBL7V007011 KENSINGTON CAP(FBL7V007,REV3A) 1
38 M-BK-0805-0089 FBL7V011019 VESA BKT L7VX(FBL7V011,REV3A) 4
39 M-SCW-0824-6797 MF40080BJ29 SCREW F4.0*8-B(BNI) 4
40 M-SCW-0824-6840 MM40080IBJ9 SCREW M4.0*8.0-I(NI) 2
41 M-MS-0808-9607 EAL7V007011 HANDER MOUNT L7VX(EAL7V007,REV3A) 1
42 M-MS-0808-9603 EAL7V016010 STAND BASE L7VX(EAL7V016,R3A) 1
43 M-MS-0808-9608 FAL7V009013 STAND NECK BKT (C) L7VX(FAL7V009,R3A) 1
44 M-MS-0808-9609 FAL7V010011 STAND BOTTOM PLATE(C) L7VX(FAL7V010,R3A) 1
45 M-CV-0830-2559 FBL7V033012 HINGE-L (C) L7VX(FBL7V033,R3A) 1
46 M-CV-0830-2560 FBL7V032016 HINGE-R (C) L7VX(FBL7V032,R3A) 1
47 M-SCW-0824-0727 MF30080IBJ0 SCREW F3.0*8-I(NI) 12
48 M-SCW-0824-6841 MM40060ICI1 SCREW M4.0* 6-I(NI,NYLOK) 6
49 M-SCW-0824-6842 MM30060BCI4 SCREW M3.0*6,B,NI,NYLOK 2
50 PL-PD-0714-0118 GAL70001019 RUBBER FOOT L70B(GAL70001,REV3A) 4
51 PL-PD-0714-0118 GAL70001019 RUBBER FOOT L70B(GAL70001,REV3A) 4
52 M-SCW-0824-6843 MM40200IBJ0 SCREW M4.0*20-I(NI) 4
53 M-MS-0808-9604 DDL7VXLC004 CABLE ASSY L7VX MB-LCD(30P,REV1A) 1
54 M-MS-0808-7690 DD0LM7IV008 CABLE ASSY LM7S INVERTER(6P,REV1A) 1
55 M-MS-0808-9582 DDL7VXTH004 CABLE ASSY L7VX MB-BUTTON1(8P,REV1A) 1
56 M-MS-0808-9605 DDL7VXTH101 CABLE ASSY L7VX MB-BUTTON2(4P,REV1A) 1
57 M-MS-0808-9606 FBL7V013011 FUNCTION PCB BKT L7VX(FBL7V013,REV3A) 2
58 M-SCW-0824-0725 MF30050IBJ6 SCREW F3*5-I(NI) 2

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9. Block Diagram

System block diagram

AC I N

Adapt or

AC- > DC

DC12V

12V

DC J ACK

CN15

VX750 System BLOCK DIAGRAM

Inverter

To ICs, PANEL

CO N NECTO R_6P

CN5

U2

AT24LC21

MOS FET

SI9410DY

Q11

EDID(DIGITAL)

PWM

CONTROLLER

AIC1563CS

U9

5V

CRYSTAL

14. 318MHz

AIC1117CY

AIC1117CY

X1

LDO
U10

LDO
U11

2.5V

3.3V

TO U3

TO U3

PANEL
LAMPS

DVI IN

ANALOG I N

AUD IO

IN

AUDI O OUT

EARPHONE OUT

DVI_D_24P

CN2

DSUB_15P

CN1

PHONE JACK

CN12

PHONE JACK

CN10

PHONE JACK

CN11

CO N NECTO R_2P

SCALER BOARD

RGB

CN14

L_SPEAKER

DDC

AUDI O AMP
TPA3002D2

U7

Headphone

AMP

LM4881MM

U8

MI CRO_CTRL+ ED I

CO N NECTO R_3P

CN13

R_SPEAKER

SCALER

MST8131A

U3

D(ANALOG )

U6

CONNECTOR_8P

LVDS

CN3

KEY BOARD1

POWER

CN7

CONNECTOR_30P

CRYSTAL

11. 0592MHz
X2

EEPROM

24LC16B

U5

CONNECTOR_4P

KEY BOARD2

FUNCTION

PANEL

CN6

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Analog Input
D-sub 15pin

Digital Input
DVI-D 24pin
(CN2)

Video

DDC
24C21

(U2)

Keypad

ADC

ADC_PLL

DVI

MST1831A
(U3)

Crystal

11.0592MHz

Mcu-controler

(U6)

MUX

EEPROM
24LC16

(U5)

Scaling
Engine

OSD

Crystal

14.318MHz

Clock
Generation

Dual LVDS
Transmitter

Panel

Audio

Mute
Speaker Assy
Volume control

Line in

(CN12)

Line out

(CN10)

TPA3002D2

(U7)

Out Connector2
CN13 (2P)

Out Connector1
CN13 (3P)

Earphone out

(CN11)

LM4881

(U8)

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Power

12V Input
(From Adaptor)

AIC1563

(U9)

TPA3002D2

(U7)

Inverter

5V

P-MQS
NDS9410

(Q11)

LM4881
U8

5V

LT1117
(U11)

LT1117
(U10)

For U2, U6, U5, PANEL

3.3V

For U3

2.5V

For U3

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Do Not Copy VX750

10. Schematic Diagrams

Button Board Function

CN1

1
2
3
4
5
6
7
8

4501-08-8P-R

2
4

HDK632A

2
4

HDK632A

2
4

HDK632A

2
4

HDK632A

2
4

HDK632A

2
4

SW1

SW2

SW3

SW4

SW5

SW6

1
3

VOL-

1
3

1
3

1
3

1
3

1
3

DOWN

UP

IN-SEL

MENU

VOL+

HDK632A

SW7

HDK632A

1
3

ENTER

2
4

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Button Board Power

CN2

1
2
3
4

4606-04-04P-R

2
4

HDK632A

SW1

1
3

POWER IO

LED1

EL-209-2EGW

A2

C

A1

blue

orange

LED2

A2

C

A1

EL-209-2EGW

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DAN217K/NC

RED+IN

IN-H

DDC-SDA
IN-H

IN-V

DDC-SCL

CN1

11
12
13
14
15

VGA/NC

VGA_SDA_O

1617

1
6
2
7
3
8
4
9

DSUB_5V_O

5

VGA_CON_O

10

VGA_SCL_O

L1 100/6

RED+IN
GREEN+IN

BLUE+IN

L4 0/6
L5 100/6/NC

L6 100/6

DSUB_5V

SDA-VGA 4

VGA_CON 4

SCL-VGA 4

2

SOT23

3

1

L2 FCM 1608C-300T06 (BULL WILL)

RED+IN

S3

RED-IN

12

L3 FCM 1608C-300T06 (BULL WILL)

CON2

GREEN+IN

S4

GREEN-IN

12

CON2

L7 FCM 1608C-300T06 (BULL WILL)

BLUE+IN

S5

BLUE-IN

12

CON2

R2

75/6/F

R5

75/6/F

R9

75/6/F

C2

NC

C5

NC

C9

NC

R1 33/6

R3 68/6

R4 33/6

R6 68/6

R7 100/6

R8 33/6

R10 68/6

C1 0.047u

C3 0.047u

C4 0.047u

C6 0.047u

C7 0.01U/6

C8 0.047u

C10 0.047u

RED+ 5

RED- 5

GREEN+ 5

GREEN- 5

SOGIN 5

BLUE+ 5

BLUE- 5

+5V

VDD3V3

12

D2

3

GREEN+IN

IN-V

D5

Z5.6/NC

2 1

CN2

25

26

DVI-D

D3

DAN217K/NC

RX2-

RX2+

GND
RX4-

RX4+

SCL
SDA

VS

RX1-

RX1+

GND
RX3-

RX3+

5V

GND

HP

RX0-

RX0+

GND
RX5-

RX5+

GND
RXC+
RXC-

3

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

17
18
19
20
21
22
23
24

12

D6

2 1

BLUE+IN

VGA_SDA_O

Z5.6/NC

12

D4

DAN217K/NC

3

VGA_SCL_O

D7

Z5.6/NC

2 1

SCL-DDDC
SDA-DDDC

R27 10K/6NC
R28 10K/6NC

C16
1U/6NC

D19

Z5.6/NC

2 1

D8

2 1

VCC-DDC

C15

0.1U/6NC

Z5.6/NC

VGA_CON_O

D9

Z5.6/NC

HP-MCU 4

2 1

D13

Z5.6/NC

2 1

D15

Z5.6/NC

2 1

D20

Z5.6/NC

2 1

DSUB_5V

C12

0.1U/6/NC

U1

1

NC

VCC

2

NC

VCLK

3

NC

SCK

4 5

VSS SDA

24LC21/NC

D14

Z5.6/NC

2 1

D16

Z5.6/NC

2 1

D21

Z5.6/NC

2 1

2 1

R162.2K/6/NC

8
7
6

R22

0/6/NC

R142 5R/6
R143 5R/6

R144 5R/6
R145 5R/6

R146 5R/6
R147 5R/6

R148 5R/6
R149 5R/6

D22

D23

Z5.6/NC

Z5.6/NC

2 1

D1

BAT54C-GS08/NC

R172.2K/6/NC

D10

Z5.6/NC

2 1

R18

2.2K/6/NC

Z5.6/NC

2 1

TX2­TX2+

DDC_VS

SCL-VGA
SDA-VGA

D11

TX1­TX1+

TX0-

TX0+

TXC+
TXC-

R29

10K/6NC

DDC_VS 4

TX2- 5
TX2+ 5

TX1- 5
TX1+ 5

TX0- 5
TX0+ 5

TXC+ 5
TXC- 5

IN-H

R13 100/6

IN-V

L8 100/6

U2

1

NC

2

NC

3

NC

4 5

VSS SDA

R12

2K/6

R15

2K/6

C14

0.1U/6

AT24C21

DDC_VS

VCC-DDC

VCC

VCLK

SCK

8
7
6

C11
33P/6

C13
33P/6

R127

R128

0/6

R11 100/6

R14 100/6

+5V

D12
BAT54C-GS08

R23

2.2K/6

2.2K/6/NC

D17

Z5.6/NS

2 1

HSYNC

VSYNC

R24

2.2K/6

R25 100/6
R26 100/6

D18

Z5.6/NS

2 1

HSYNC 5

VSYNC 5

SCL-DDDC
SDA-DDDC

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Confidential - Do Not Copy VX750

INVCTRL

BRIGHTNESS5

KEY_SEL
KEY_RIGHT
KEY_LEFT
MUTE_F
KEY_UP
KEY_DOWN
KEY_ESC

D27

12

3

KEY_LEFT_O

DAN217K/NC

12

12

CN6

1
2
3
4

4501-04-04P-R

C67

0.1u/6

+5V

R38

10K/6

PC5V_OFF

12

10K/6

C460.1U/6 12

+5V

R39

12

12

12

R40

10K/6

10K/6

C470.1U/6 12

C480.1U/6

D28

3

MUTE_F_O

DAN217K/NC

DSUB_5V

R137

4.7K/NC

R41

12

12

12

R42

10K/6

10K/6

C490.1U/6

C500.1U/6

+5V

12

+5V

R139

1 2

1K/NC

12

12

R44

R43

10K/6

C510.1U/6/NC

C520.1U/6/NC

D29

3

KEY_UP_O

DAN217K/NC

Q14

MMST3906/NC

12

R138

2K/NC

31

2

L15 1K/61 2
L16 1K/61 2
L17 1K/61 2
L18 1K/61 2
L19 1K/61 2
L20 1K/61 2
L21 1K/61 2
L22 0/81 2

TO BUTTON BOARD

+5V

D30

12

3

KEY_DOWN_O

DAN217K/NC

R132 0/NC

1 2

Q13
MMST3906/NC

12

R135

1K/NC

3.3/NC

R136 47/NC

1 2

Q15
2N3904/NC

R141

KEY_SEL_O
KEY_RIGHT_O
KEY_LEFT_O
MUTE_F_O
KEY_UP_O
KEY_DOWN_O
KEY_ESC_O

+5V

12

12

2 1

D31

3

KEY_ESC_O

DAN217K/NC

D42

5.1V/NC

CN3

1
2
3
4
5
6
7
8

4501-08-08P-R

VCPU1

+5V

MCP810M3X-2.93

G

3

1

2

V

R

12

CSZ5
SDA5
SCL

5

R73
1U/6

1 2

100K/6

BRIGHTNESS

1 2

R58 2.2K/6

1 2

R60
R20
R21 100/6

R65 NC

+5V

+5V

R83

5.6K/6

VCPU

SCL-VGA3
SDA-VGA3

MUTE7

VCPU

INT5

XTAL5

R78

0.1u/6/NC

100/6

22P/6

1

12

C135

C55

12

2.2K/6

12

1

3

2

U4

1 2

VCC RESET

12

R51

10K/6

R53 22/612
R54 22/612
R57 22/612

12

C136

0.1u/6/NC

12

3

2

C56

3

VCPU

12

R52

NC

22P/6

DDC_VS

3

R66 22/6

C57

12

22P/6

C58

12

22P/6

C59 0.1U/6/NC

12

0/6/NS

R71

7.5K/6

Q12N7002

4.7K/6

GND

NC

R50

NC

R70

+5V

R85

Q42N7002

R49

4.7K/6

VCPU

R74

1 2
1 2

R77

12

12

X2

11.0592MHz

C68
1u/8

+5V

12

MH0001
MH0002
MH0003
KEY_SEL
KEY_RIGHT
KEY_LEFT
SCL_1
SDA_1

1 2

R130 2.2K/6
R19 33/6

MUTE
INVCTRL

SS0003

R67

100/6

7.5K/6
0/6

VCPU

12

C44

12

C45

1U/8

12

C62
1U/6

U5

0.1U/6

1

A0

2

A1

3

A2

4 5

VSS SI

24LC16

U6

7

RST

17

P1.0

18

P1.1

20

P1.2

21

P1.3

22

P1.4

23

P1.5

14

P3.5/T1/ISCL

13

P3.4/T0/ISDA

29

P3.0/RXD/HSCL

28

P3.1/TXD/HSDA

43

HSYNC

44

VSYNC

37

P4.1/HBLANK

36

P4.0/VBLANKK

19

P3.2/INT0

15

P4.2/STOUT

11

X2

12 10

X1 VSS

MTV312

12V

12

C60

0.1u/8

12

C63

L25

12p/6/NS

CX000800000/1206

VCC

WP

SCK

HCLAMP/DA7

HLFHO/DA9

P6.7/DA13
P6.6/DA12

P6.4/DA10
P6.5/DA11

HALFV/DA8

L24
CX000800000/1206

C61

330u/16V

4606-06-06P-R

8
7
6

VDD3

P5.2/DA2
P5.6/DA6
P5.0/DA0
P5.1/DA1

P6.0/AD0
P6.1/AD1

P6.3/AD3
P6.2/AD2

P5.3/DA3
P5.4/DA4
P5.5/DA5

VDD

P1.6
P1.7

NC
NC

SCL_O
SDA_O

8
4

0.01u/6

24
25

35
38
1

R131 100/61 2

34
3
2

33
32

27
26

5
6

9
16
30
31

42
41
40
39

CN5

1
2
3
4
5
6

12

R45

2K/6

C141

MUTE_F
KEY_UP

KEY_DOWN
KEY_ESC

LED_R
LED_G
PWR_ON/OFF

R68 10K/6

LED_G

LED_R

12

R46

2K/6

R47 100/6

1 2
1 2

R48 100/6

12

12

R55

10K/6

PC5V_OFF

R59 10K/612
R61 10K/61 2
R62 0/6/NC1 2

PWR_SEL

R64 NC

12

R82 4.7K/6

R84 4.7K/6

12

R56
R129
10K/6

1 2

MMST3906

MMST3906

12

+5V

SCL_1
SDA_1

VCPU

12

C53

0.1U/6

RESET

VCPU

HP-MCU 3

VCPU

Q2

DSUB_5V

L23

1 2

0/8

C54

22U

VGA_CON 3

VDDCTRL_2 6

VDD3V3
VDD3V3

VDDCTRL_1 6

PWR_ON/OFF

Q3

+5V

12

5

+5V

10K/6

D32

3

DAN217K/NC

R72

+5V

D43

BAT54C-GS08

VCPU1

SCL-VGA
SDA-VGA

DEBUG PORT

D25

12

KEY_SEL_O

3

DAN217K/NC

12

R79 100/6
R80 100/61 2
R81 220/61 2

PWR_ON/OFF_O

+5V

2.0mm pitch
90° E&T

+5V

D26

12

3

KEY_RIGHT_O

DAN217K/NC

PWR_SEL

PWR_ON/OFF_O

C64
12p/6

modify debug port

CN4

4

4

3

3

2

2

1

1

JWT-A2001WV2-06/NC

+5V

12V

R133

6.8K

R134

4.7K

C65

C66

12p/6

12p/6

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Confidential - Do Not Copy VX750

VAD

VPLL

VDPLL

VPOVDVI

55

35

45351

11218494104

AVDD_DVI

AVDD_DVI

AVDD_MPLL

53

VDDP

VDDP

VDDP

VDDP

AVDD_PLL

MST8131A

Dual Input

U3

RED+3
RED-3

GREEN+3
GREEN-3
SOGIN3

BLUE+3
BLUE-3

HSYNC3
VSYNC3

TX2+3
TX2-3
TX1+3
TX1-3
TX0+3
TX0-3
TXC+3
TXC-3

CSZ4

SCL4
SDA4

RESET4

INT4

C132

0.1u/6

12

BRIGHTNESS4

VOLUME7

VDVI

C133

12

XTAL4

R30 390/1%

1000P/6

R31 100/6
R32 100/6

12

0.1u/6
10K/6

R140

C41

22P/6

C42

22P/6

12

C137

0.1U/6

1 2

R63 22/6
C134

0.1u/6

12

12

C43 0.1U/6

C35

X1

14.318MHz

65

AVDD

AVDD

63

RIN0

62

RIN0M

60

GIN0

59

GIN0M

61

SOGIN0

58

BIN0

57

BIN0M

37

HSYNC0

38

VSYNC0

29

DDC1_CLK/GPO8

28

DDC1_DAT/GPO7

40

R+

41

R-

43

G+

44

G-

46

B+

47

B-

49

CK+

50

CK-

52

REXT

66

REFP

67

REFM

69

CSZ

71

SCL

70

SDA

32

HWRESETZ

72

INT

30

DDCROM_CLK/GPO6

31

DDCROM_DAT/GPO5

73

PWM0

74

PWM1

33

XIN

34

XOUT

BYPASS
AVSS_LPLL

114

126188797117

VDDP

VDDP

VDDP

VDDC

VDD

VDDC

VDDC

RA0P

VDDC

RA0N
RA1P
RA1N
RA2P
RA2N
RA3P
RA3N

GA1P
GA1N
GA2P
GA2N
GA3P
GA3N

BA1P
BA1N
BA2P
BA2N
BA3P
BA3N

CLKAP

CLKAN

RB1P
RB1N
RB2P
RB2N
RB3P
RB3N
GB0P
GB0N
GB1P
GB1N
GB2P
GB2N
GB3P
GB3N
BB0P
BB0N
BB1P
BB1N
BB2P
BB2N
BB3P
BB3N

CLKBP

CLKBN

OSP

EINV

OINV
GPO0

GPO1
GPO2
GPO3
GPO4

ESP

VDD3V3

CX601T02001/8

106
107
108

PA2
PA3
PA4
PA5
PA6
PA7

PA10
PA11
PA12
PA13
PA14
PA15

PA18
PA19
PA20
PA21
PA22
PA23
PA24
PA25

PB2
PB3
PB4
PB5
PB6
PB7

PB10
PB11
PB12
PB13
PB14
PB15

PB18
PB19
PB20
PB21
PB22
PB23
PB24
PB25

R33 22

ESP
OSP

R34 22/6
R35 NC

OINV

R36 22/6

GPO0
GPO1

R37 22/6

GPO2
GPO3
GPO4

FB2P 6
FB2N 6
FB1P 6
FB1N 6
FB0P 6
FB0N 6

FG2P 6
FG2N 6
FG1P 6
FG1N 6
FG0P 6
FG0N 6

FR2P 6
FR2N 6
FR1P 6
FR1N 6
FR0P 6
FR0N 6
FCLKP 6
FCLKN 6

BB0N 6
BB0P 6
BB1N 6
BB1P 6
BB2N 6
BB2P 6

BG0N 6
BG0P 6
BG1N 6
BG1P 6
BG2N 6
BG2P 6

BR0N 6
BR0P 6
BR1N 6
BR1P 6
BR2N 6
BR2P 6
BCLKN 6
BCLKP 6

YDIO 6
YCLK 6
YOE 6

109
110
111
112
113

98
99
100
101
102
103

88
89
90
91
92
93
118
119

16
17
22
23
24
25
6
7
8
9
12
13
14
15
122
123
124
125
128
1
4
5
120
121

75
76
77
78

83
82
81
80
79

LVACKP 6

LVACKM 6

LVB2P 6

LVB2M 6

VDD3V3

VDD3V3

VDD2V5

FXDIO 6
BXDIO 6
POL 6

XSTB 6

CX601T02001/8

CX601T02001/8

VPO

L9

C22

C23

0.1U/6

0.1U/6

CX601T02001/8

CX601T02001/8

C24

0.1U/6

VPLL

L11

C28

C29

22U

0.1U/6

VDPLL

L13

C34

C33
22U

0.1U/6

C19

C17

C18

22U

0.1U/6

VAD

L10

C25

C26

22U

0.1U/6

VDVI

L12

C31

C30
22U

0.1U/6

VDD

L14
0/8

C37

C36
22U

0.1U/6

0.1U/6

C27

0.1U/6

C32

0.1U/6

C38

0.1U/6

C20

0.1U/6

C39

0.1U/6

C21

0.1U/6

VDD3V3

VDD3V3

C40

0.1U/6

ViewSonic Corporation

60

AVSS_PLL

AVSS_DVI

GNDP

GNDP

GNDP

GNDP

GNDP

GNDP

GNDC

AVSS

56

AVSS

644868

AVSS

36254

AVSS_MPLL

AVSS_DVI

39

4210208595

AVSS_DVI

105

GNDP

115

1271986

Confidential - Do Not Copy VX750

GNDC

GNDC

96

GNDC

116

82K/6/NC

LCDVDD

LCDVCC

VDD3V3

R88

R93

10K/6/NC

Q7

31

DTC144EUA/NC

2

B

FB0N5
FB0P5

FB1N5
FB1P5

FB2N5
FB2P5

FG0N5
FG0P5

FG1N5
FG1P5

FG2N5
FG2P5

FCLKN5
FCLKP5

FR0N5
FR0P5

FR1N5
FR1P5

FR2N5
FR2P5

FXDIO5
XSTB5
POL5
BXDIO5

YCLK5
YDIO5
YOE5

L26 0/8/NC
L27 0/8/NC
L28 0/8/NC
L29
0/8/NC
L30 0/8/NC

C77

0.1U/6/NC

12

C69

2200P/6/NC

3

C

2

1

Q5 SI2301DS/NC

1

2

G

VDDCTRL_1 4

E

12

12

D

3

2

C78

0.1U/6/NC

3

C70

2200P/6/NC

1 2

1

S

CN8

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
39
40
41
42
43
44
45
46
47
48
49
50

AF750B-A2G1T/NC

12

R89
10K/6/NC

1

1

+5V

C72
330U/16V/NC

12V

R86

0/8/NC

31

CN9

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

AF730B-A2G1T/NC

H1

2
3

1

4
5 6

MTH276D126

H3

2
3

1

4
5 6

MTH276D126

R91

82K/6

R95

82K/6

9
8
7

9
8
7

BR1P

R87

0

12

Q8

DTC144EUA

2

3

C

2

B

Q6 SI2301DS

1

C73

0.22U/6

2

G

VDDCTRL_2 4

1

E

H2

2
3

1

4
5 6

MTH276D126

3

1 2

3

D

2

1

S

9
8
7

C74

2200P/6

12

R92
10K/6

LCDVCC

12

C75

0.1U/6

LCDVCC

C76
330U/16V

LVB2M5

LVACKM5

BR0P
LVB2M
GND
BCLKP
FCLKN
FB0N
GND
FB1N
FB2N
LVACKM
FG0N

GND
LCDVCC

11
13
15
17
19
21
23
25
27
29

3
5
7
9

1
3
5
7
9
11
13
15
17
19
21
23
25
27
29

1841 30P

2
4
6

8
10
12
14
16
18
20
22
24
26
28
30

CN7

1

BR1N

2

BR0N

4

LVB2P

6

GND

8

BCLKN

10

FCLKP

12

FB0P

14
16

GND

18

FB1P
FB2P

20

LVACKP

22

FG0P

24
26

POL

28

LCDVCC
LCDVCC

30

GND

LVB2P 5

R90

3.6K/F/6/NC

LVACKP 5

R94

1.2K/F/6

LCDVCC

GND

LCDVDD

LCDVDD

C71

12

0.1U/6/NC

BB2P5
BB2N5

BB1P5
BB1N5

BB0P5
BB0N5

BG2P5
BG2N5

BG1P5
BG1N5

BG0P5
BG0N5

BCLKP5
BCLKN5

BR2P5
BR2N5

BR1P5
BR1N5

BR0P5
BR0N5

1

1

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Confidential - Do Not Copy VX750

CN10

CN12

ZD005D100

ZD005D100

+5V

R96 1K/6

L35

0.01U/6

C91

40

ROUTP

LOUTP

0.01U/6

L38

39

ROUTP

LOUTP

C111

C116 1nF/6

SPKLO+

1

38

PVCCR

PVCCR

VCLAMPR

MODE_OUT

VAROUTR

VAROUTL

VCLAMPL

PVCCL

PVCCL

37

MODE
AVCC

AGND
AVDD
COSC
ROSC
AGND

24

L31

C90

0.01U/6

46

0.01U/6

PVCCR

PVCCL

C110

45

ROUTN

LOUTN

VOLUME5

44

ROUTN

LOUTN

L34

L37

43

PGNDR

PGNDL

C81 1nF/6

1nF/6

C82 1nF/6

42

PGNDR

PGNDL

C115

41

SPKLO-

1
5
4
3
2

R980/6

R990/6

12V

1
5
4
3
2

AGND

AGND

RIN

LIN

AGND

MUTE4

AGND

left_in

right_in

C86

D38

1N4148

D39

1N4148

+12V

L39

220P/6

AGND

R113 10K/6

R100 47K/6

R101

47K/6

220P/6

C87

10K/6

R102

AGND

AGND

D40

1N4148

D41

1N4148

R114 10K/6

10K/6

L33

L36

R103

1

R115

10K/6

L32

AGND

AGND

Q10

3

2

LIN

RIN

C88

AGND

AGND

AGND

VOLU

SD

MMBT3904L

H4

2
3

1

4
5 6

MTH276D126

220P/6

C95 1U/6
C97 1U/6
C99 1U/6
C102 1U/6

9
8
7

C89

C94 1U/6

C109 0.1u/6

220P/6

SD

AGND

+12V

1
2
3
4
5
6
7
8

9
10
11
12

+12V

+12V

0.1u/6

22u/25V

C83

C80

47

48

U7

BSRN

SDZ
RINN
RINP
V2P5
LINP
LINN
AVDDREF
VREF
VARDIFF
VARMAX
VOL
AGND

PVCCR

BSLN

PVCCL

1314151617181920212223

22u/25V

C113 0.1u/6

C112

L40

3

2C114

BSRP

BSLP

0.1u/6

R97 10K/6

Q92N7002

SPKRO­SPKRO+

C84 0.1u/6

C93 1U/8

36
35
34
33

VAROR

32

VAROL

31
30

C104 0.1u/6

AVDD

29

C107 220P/6

28

R111 120K/6

27
26

C108 1U/8

25

TPA3002D2

C100

C79 1u/8

0.1u/6

AGND

VOLU

+12V

22u/25V

C101

SPKRO+
SPKRO-

SPKLO+
SPKLO-

VAROL

VAROR

AVDD

R104

120K/6

AGND

C96

1 2

1U/6

R108
10K/6/NS

C103

1 2

1U/6

R110
10K/6/NS

CN13

1
2
3

4501-03-03P-R
CN14

1
2

4501-02-02P-R

R107

20K/6

R109

20K/6

R106
82K/6

C98

R112
20K/6

1U/6

AGND

AGND

AGND

U8

2

GNDSDVO1

3
4

IN2-

LM4881MM

C92

100u/16V

IN1-BYPASS

VDD

VO2

CN11

1
2
6
5
3
4

RC64AR-06G1-JI

81
7
6
5

12

C105
1U/6

C85

100u/16V

R105
20K/6

AGND

AVDD

C106
22U/25V

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+12V INPUT

D33

1SS355

12

C117
1u/8

12VDD

C123
330u/16V

12V

FUSE1

CN15

1 2

5A125V,SLOW

12

C119

0.1u/8

L41

1 2

R6H6-3Ts

L42

CX000800000/1206

12

C120

0.1u/8

+5V

+5V

12

R116

0.33/1206

C121

0.1u/8

R122
1K/6 1%

L45
CX000800000/1206

U9

8

BOOST

7

IS

6

VCC

AIC1563

R121 3K/6 1%

C128

100u/16V

C124

1 2

2200p/6

1

DC

2

DE

3

CF

45

GNDFB

+

U10

1

LT1117/TO223

R117 47/6

12

C122
120p/6

ADJ

1 2

R118

VOUTVIN

OUT

200/6

330K/6

240K/6 1%

R124

R119

0.8A Max

23
4

NDS9410A/SO

D34

1SS355

Q12

MMST3906

R120
1K/6

VDD2V5

R123

200/6

+

C129

1 2

100u/16V

7681

Q11

12

C118

234 5

0.1u/6

+5V

L43

12

47UH

D35

RB081L-20

2 1

12

12

C125
1nF/6

L44

CX000800000/1206

C126

C127

0.1u/6

1000u/6.3V

ViewSonic Corporation

63

L46
CX000800000/1206

Confidential - Do Not Copy VX750

100u/16V

U11

23

VOUTVIN

1

4

ADJ

OUT

+

C130

LT1117/TO223

1 2

R126

330/6

0.8A Max

VDD3V3

R125

200/6

+

C131

1 2

100u/16V

11. PCB Layout Diagrams

Main Board

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Confidential - Do Not Copy VX750

Main Board

ViewSonic Corporation

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Confidential - Do Not Copy VX750

Main Board

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Main Board

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Confidential - Do Not Copy VX750

Main Board

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Control Board

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Do Not Copy VX750

*Readers Response*

Dear Readers:

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

of our products. We would appreciate your completion of the Assessment Matrix below, for return to

ViewSonic Corporation.

Assessment

A.What do you think about the content after reading VX750 Service Manual?

1.

Precautions And Safety Notices

2. Specification

Front Panel Function Control Description

3.

4. Circuit Description

5.

Adjusting Procedure

6. Trouble Shooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram and Spare Parts List

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

tinU riaF daB

B.Are you satisfied with the VX750 service manual?

metI tnellecxE dooG riaF daB

dooGtnellecxE

.1

Service Manual Content

.2

Service Manual Layout

.3

The form and listing

C.Do you have any other opinion or suggestion about this service manual?

Readers basic data:

Name: Title:
Company:

Add.:
Tel:
E-mail:

After completing this form, please return it to ViewSonic Quality Assurance

1-909-839-7943.
([e-mail])

You may also e-mail any suggestions to the Director, Quality Systems & Processes

Fax:

in the USA at facsimile

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Do Not Copy VX750