Viewsonic VX912-3 Service Manual

Service Manual

ViewSonic VX912-3

Model No. VS10162

19” Color TFT LCD Display

(VX912-3_SM Rev. 1a Jun. 2006)

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

Copyright

Copyright © 2006 by ViewSonic Corporation. All rights reserved. No part of this publication
may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language or computer language, in any form or by any means, electronic, mechanical, magnetic,
optical, chemical, manual or otherwise, without the prior written permission of ViewSonic
Corporation.

Disclaimer

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

Trademarks

Opt quest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.

Revision History

Revision SM Editing Date ECR Number Description of Changes Editor

1a 06/08/2006 Initial release J. Chang

ViewSonic Corporation Confidential - Do Not Copy VX912-3

i

TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 3

3. Front Panel Function Control Description 8

4. Circuit Description 10

5. Adjustment Procedure 22

6. Troubleshooting Flow Chart 41

7. Recommended Spare Parts List 44

8. Exploded Diagram and Exploded Parts List 46

9. Block Diagram 49

10. Schematic Diagrams 50

11. PCB Layout Diagrams 57

ViewSonic Corporation Confidential - Do Not Copy VX912-3

ii

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. Because of the high voltage used in the inverter circuit. These
voltage are 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 , AC cord is detachable , but DC cord is

permanently attached . Any attempt to replace another adapter could result in serious problem on 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 by 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

ViewSonic Corporation Confidential - Do Not Copy VX912-3

1

Handing and placing method

Correct methods : Incorrect Methods :

Only touch the metal-frame of the panel or the front
cover of the monitor .
Do not touch the surface of the polarizer .

Surface of the panel is pressed by fingers & this may
cause “ MURA “

Take out the monitor with cushion Take out the monitor by grasping the LCD panel.

That may cause “ MURA“.

Place the monitor on a clean & soft foam pad . Place the monitor on foreign objects .

That could scratch the surface of panel

ViewSonic Corporation Confidential - Do Not Copy VX912-3

2

2. Specification

GENERAL specification

Test Resolution & Frequency 1280x1024 @ 60Hz
Test Image Size Full Size

Contrast and Brightness Controls

VIDEO INTERFACE

Analog Input Connector DB-15 (Analog), refer the appendix A
Digital Input Connector DVI-I (Digital), refer the appendix B
Default Input Connector Defaults to the first detected input
Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes
Video Cable Connector DB-15 Pin out Compliant DDC 1/2B

Video Signals

Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)
Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor

Factory Default:
Contrast = 70%, Brightness = 100%

1. Video RGB (Analog)
Separate, Composite, and Sync on Green

2. TMDS (Digital)

Sync Signals LVDS
DDC 1/2B Compliant with Revision 1.3
Sync Compatibility Separate Sync, Composite Sync, SOG

Video Compatibility

Resolution Compatibility

Exclusions Not compatible with interlaced video

Shall be compatible with all PC type computers, Macintosh
computers, and after market video cards
640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600,
832 x 624, 1024 x 768, 1152 x 864, 1152 x 870, 1280 x 720,
1280 x 960, 1280 x 1024

* The image vertical size might not be full screen.
But the image vertical position should be at the center.

ViewSonic Corporation Confidential - Do Not Copy VX912-3

3

POWER SUPPLY

Internal Power Supply Part Number: FSP035-1PI01
Input Voltage Range
Input Frequency Range
Short Circuit Protection
Over Current Protection

Leakage Current
Efficiency 77 % TYPICAL AT 115VAC FULL LOAD
Fuse

Power Dissipation
Max Input AC Current

Audio interface (SPEAKER SPECIFICATION)

90 to 264 VAC

47.5 to 63 Hertz
OUTPUT CAN BE SHORTED WITHOUT DAMAGE

3.5 A TYPICAL AT 12.0 VDC ( PROTECT WHEN SHORT
CIRCUIT )

0.75MA (MAX) AT 264VAC / 50HZ

INTERNAL AND NOT USER REPLACEABLE
35 WATTS (TYP)

1.2 ARMS @ 90VAC, 0.7 ARMS @265VAC

Line input connection
Line input signal
Line input impendence
Maximum Power output
Signal to Noise Ratio
Frequency response

Distortion <5% THD @1K
Vibration

Screen image
Connector PC99 requirement Audio in

Cable type / length

Audio DPMS

3.5mm stereo jack

1.3Vrms
10KOHM
1W@<5% DISTORTION
72DB
200HZ – 20K

THERE SHOULD BE NO AUDIO VIBRATION WITH
VOLUME AT 100% AND TREBLE/BASS AT DEFAULT
THERE SHOULD BE NO AFFECT ON THE SCREEN
IMAGE STABILITY UNDER ANY CONDITIONS.
LIME GREEN PANTONE # 577C

3.5MM STEREO CABLE / 1.8M LENGTH
SPEAKERS STAY ON WHERE THE REST OF THE

MONITOR IS IN POWER –SAVING.
NOTE: THERE US NO GUARANTEE <1W POWER
CONSUMPTION IN ACTIVE OFF MODE WHEN THE AUDIO
CABLE IS CONNECTED.

ViewSonic Corporation Confidential - Do Not Copy VX912-3

4

ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency

Horizontal Frequency
Vertical Refresh Rate
Maximum Pixel Clock 135 MHz
Sync Polarity Independent of sync polarity.

Timing Table

Item Timing Analog Digital

1 640 x 350 @ 70Hz, 31.5kHz Yes Yes
2 640 x 400 @ 60Hz, 31.5kHz Yes Yes
3 640 x 400 @ 70Hz, 31.5kHz Yes Yes
4 640 x 480 @ 50Hz, 24.7kHz Yes No
5 640 x 480 @ 60Hz, 31.5kHz Yes Yes
6 640 x 480 @ 67Hz, 35.0kHz Yes Yes

24 – 82 kHz
50 – 75 Hz.

7 640 x 480 @ 72Hz, 37.9kHz Yes Yes
8 640 x 480 @ 75Hz, 37.5kHz Yes Yes

9 640 x 480 @ 85Hz, 43.27kHz Yes Yes
10 720 x 400 @ 70Hz, 31.5kHz Yes Yes
11 800 x 600 @ 56Hz, 35.1kHz Yes Yes
12 800 x 600 @ 60Hz, 37.9kHz Yes Yes
13 800 x 600 @ 75Hz, 46.9kHz Yes Yes
14 800 x 600 @ 72Hz, 48.1kHz Yes Yes
15 800 x 600 @ 85Hz, 53.7kHz Yes Yes
16 832 x 624 @ 75Hz, 49.7kHz Yes Yes
17 1024 x 768 @ 60Hz, 48.4kHz Yes Yes
18 1024 x 768 @ 70Hz, 56.5kHz Yes Yes
19 1024 x 768 @ 72Hz, 58.1kHz Yes Yes
20 1024 x 768 @ 75Hz, 60.0kHz Yes Yes
21 1024 x 768 @ 85Hz, 68.67kHz Yes Yes
22 1152 x 864 @ 75Hz, 67.5kHz Yes Yes
23 1152 x 870 @ 75Hz, 68.7kHz Yes Yes
24 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes
25 1280 x 1024 @ 75Hz, 79.97kHz Yes Yes
26 1280x 720 @ 60Hz, 45kHz (HDTV) Yes Yes

5

ViewSonic Corporation Confidential - Do Not Copy VX912-3

TFT LCD PANEL

1st Source Panel

Model number
Type
Active Size
Pixel Arrangement
Pixel Pitch

Glass Treatment ANTI GLARE (HARD COATING 3H)
# of Backlights 4 CCFL EDGE-LIGHT (2 TOP / 2 BOTTOM)
Backlight Life 40000 HOURS (MIN)

Luminance (Center) –
Condition:
CT = 6500K, Contrast = Max, Brightness =
Max
Brightness Uniformity

Contrast Ratio
Color Depth
Viewing Angle (Horizontal)

Viewing Angle (Vertical) @ CR>10

QDI QD19EL0101
TN TYPE WITH LVDS INTERFACE

376.3 (H) X 301.1 (V)
RGB VERTICAL STRIPE

0.294 MM

270 CD/M2 (TYP AFTER 30 MINUTE WARM UP)
220 CD/M2 (MIN AFTER 30 MINUTE WARM UP)

?W = 1.25 (TYP)
?W = MAX LUMINANCE OF 9 POINTS/MIN
LUMINANCE OF 9 POINTS
600:1 (TYP), 400:1 (MIN)

16.2 MILLION COLORS (6 BITS + 2 BITS FRC)
@ CR>10

Typical: 140
MINIMUM: 120

@ CR>5
TYPICAL: 160
MINIMUM: 145

Typical: 125
MINIMUM: 105

@ CR>5
TYPICAL: 145

MINIMUN: 125
Response Time
10%-90% @ Ta=25°C
Panel Defects Please see Panel Quality Specifications.

8 ms (Tr= 2 ms, Tf = 8 ms) (typ)

12 ms (Tr= 3 ms, Tf = 9 ms) (max)

6

ViewSonic Corporation Confidential - Do Not Copy VX912-3

MECHANICAL
Dimension (Desktop)

Width 431 mm (17 inch)
Height 468 mm (18.4 inch)
Depth 201 mm (7.9 inch)
Monitor Weight 6.7 Kg (14.8 lbs)

Dimension (Head Only / Wall Mount)
Width 431 mm (17 inch)
Height 370 mm (14.6 inch)
Depth 66 mm (2.6 inch)
Monitor Weight 5.3 Kg (11.7 lbs)

Ergonomics

Tilt Up

From 0º up to ≧20º
Tilt Down From 0º down to -3º ~ -5 º

ENVIRONMENTAL

l Operating Temperature : 0°C to +40°C
l Storage Temperature : -20°C to +60°C
l Operating Relative Humidity : 20% to 90% RH Non-Condensing
l Storage Relative Humidity : 5% to 90% RH Non-Condensing
l Operating Altitude : 0 to +3,000 meters
l Storage Altitude : 0 to +12,000 meters

ViewSonic Corporation Confidential - Do Not Copy VX912-3

7

3. Front Panel Function Control Description

ViewSonic Corporation Confidential - Do Not Copy VX912-3

8

ViewSonic VX912-3

Main Menu Controls

Adjust the menu items shown below by using the up and down buttons.
A. 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 Image Adjust works with most common video cards. If this function does not work on your LCD display,
then lower the video refresh rate to 60 Hz and set the resolution to its pre-set value.

B. Contrast adjusts the difference between the image background (black level) and the foreground (white level).
C. Brightness adjusts the lamps current to control the screen brightness.
D. Color Adjust provides several color options: preset color temperatures and Custom User Color which allows you to adjust

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).
5400K — Adds red to the screen image for warmer white and richer red.
Custom User Color — Individual adjustments for red, green, and blue.
1 To select color (R, G or B) press button [2].

2 To adjust selected color, press or .

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

E. Information displays the timing mode (video signal input) coming from the graphics card in your computer. See your

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.

F. Manual Image Adjust controls are explained below:
H. Size (Horizontal Size) adjusts the width of the screen image.
NOTE: Vertical size is automatic with your LCD display.
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.

Fine Tune sharpens focus by aligning the illuminated text and/or graphic characters.
Sharpness adjusts the clarity and focus of the screen image.
Setup Menu controls are explained below:
Language allows you to choose the language used in the menus and control screens.
Resolution Notice displays the recommended resolution for this LCD display.
Enable allows the Resolution Notice to appear on-screen.
Disable will not allow the Resolution Notice to appear on-screen.
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 OSD disappears.

G. OSD Position allows you to move the on-screen display menus and control screens.
H. 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.

9

ViewSonic Corporation Confidential - Do Not Copy VX912-3

4. Circuit Description

PIN

MNEMONI

SIGNAL

1RVRed Video

2GVGreen Video

3BVBlue Video

4NCNone

5

GND

Ground(DDC return)

6RGRed GND

7GGGreen GND

8BGBlue GND

9

+5V

+ 5V (for DDC)

10SGSync GND

11NCNone

12

SDA

DDC Data

13HSHorizontal Sync

14VSVertical Sync

15

SCL

DDC Clock

1. Outline

1.1 POWER On/Off , LED, Button"2" , Up arrow- button , Down arrow button , Button"1" , button , Down arrow button ,

Button"1" , on the front panel.

1.2 Video signal connector, and AC-IN are located on the back side of the cabinet.

1.3 OSD menu includes the following function;

AUTO IMAGE ADJUST
CONTRAST / BRIGHTNESS
COLOR ADJUST
INFORMATION
MANUAL IMAGE ADJUST
SETUP MENU
MEMORY RECALL

1.4 CONTRAST and BRIGHTNESS can be directly controlled with UP / DN key.

2. CONNECTORS

2.1 AC inlet : CEE22 typed connector

2.2 Video signal connector 14P + Mini D-Sub

CN6

162738495

16 17

11

12

13

14

10

15

DB15HD

ViewSonic Corporation Confidential - Do Not Copy VX912-3

10

3. ELECTRICAL SPECIFICATIONS

3.1 Standard conditions

Display Area
Video Signal
Contrast
Brightness
Ambient
Input
Warming up
Display

3.2 POWER

3.2.1 Power supply

Input Voltage 90 -240 ~Volts

338 x 270 mm

0.7 Vpp

70%

Max.

20 +/- 5 °C

AC

> 30 min

1280 x 1024

Power Frequency
Input current

Inrush current 90A(max.) at 230Vac
Power consumption 50Watt
Output Voltage @0-3.0A load 12Vdc

3.2.2 Power Management

State Power Indicator

On 40Watt Green

Standby <1Watt Amber

Off <1Watt

50/ 60 Hz +/-3Hz
<1.5Arms @ 90Vac
<0.75Arms@240Vac

+/-5%

ViewSonic Corporation Confidential - Do Not Copy VX912-3

11

3.3 Acceptable timing

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

Horizontal: Sync frequency : 30~81 kHz
Vertical: Sync frequency : 56~85Hz(1280x1024,75Hz)

3.4 Signal level and input impedance

3.4.1 Video Signal level This LCD display is adjusted at the factory using 0,7 Vp-p Video signal.

3.4.2 Sync Signal level

H/V Separate : TTL level

3.4.3 Input impedance
Video input : 75 ohms
Sync input : > 1 k ohms

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

ViewSonic Corporation Confidential - Do Not Copy VX912-3

12

5. EDID data

Analog EDID

VIEWSONIC CORPORATION
EDID Version # 1, Revision # 3
DDCTest For: ViewSonic VX912-3

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 1C D7 01 01 01 01 01 0F 01 03
20 0E 26 1E 78 2E 57 45 A4 57 47
30 9D 25 17 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 78 2D 11 00
70 00 1E 00 00 00 FF 00 50 5A 38
80 30 35 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E

100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 58 39 31 32 2D 33

120 0A 20 20 20 20 20 00 49
(08-09) ID Manufacturer Name ________________ = VSC
(11-10) Product ID Code _____________________ = D71C
(12-15) Last 5 Digits of Serial Number ______ = Not Used
(16) Week of Manufacture _________________ = 01
(17) Year of Manufacture _________________ = 2005
(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 ________________ = 380 mm
(22) Maximum Vertical Image Size __________________ = 300 mm
(23) Display Gamma ________________________________ = 2.20
(24) Power Management and Supported Feature(s):
Active Off/Very Low Power, Standard Default Color Space,

13

ViewSonic Corporation Confidential - Do Not Copy VX912-3

Preferred Timing Mode
Display Type = R/G/B Color
(25-34) CHROMA INFO:
Red X - 0.642 Green X - 0.278 Blue X - 0.146 White X - 0.313
Red Y - 0.341 Green Y - 0.616 Blue Y - 0.090 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
1152 X 864 @75Hz
1024 X 768 @85Hz
800 X 600 @85Hz
640 X 480 @85Hz
Not Used
Not Used
Not Used

(54-71) Detailed Timing / Descriptor Block 1:
1280x1024 Pixel Clock: 108.00 MHz

Horizontal Image Size: 376 mm Vertical Image Size: 301 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

14

ViewSonic Corporation Confidential - Do Not Copy VX912-3

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:
PZ8050100001

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

Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 85 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 82 KHz
Pixel Clock - 140 MHz
Secondary GTF - Not Supported

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

Monitor Name:
VX912-3

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

ViewSonic Corporation Confidential - Do Not Copy VX912-3

15

Digital EDID

Time: 08:18:48
Date: Tue Jun 29, 2004

VIEWSONIC CORPORATION
EDID Version # 1, Revision # 3
DDCTest For: ViewSonic VX912

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 1C D7 01 01 01 01 01 0F 01 03
20 80 26 1E 78 2E 57 45 A4 57 47
30 9D 25 17 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 78 2D 11 00
70 00 1E 00 00 00 FF 00 50 5A 38
80 30 35 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E

100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 58 39 31 32 2D 33

120 0A 20 20 20 20 20 00 49
(08-09) ID Manufacturer Name ________________ = VSC
(11-10) Product ID Code _____________________ = D71C
(12-15) Last 5 Digits of Serial Number ______ = Not Used
(16) Week of Manufacture _________________ = 01
(17) Year of Manufacture _________________ = 2005
(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 ________________ = 380 mm
(22) Maximum Vertical Image Size __________________ = 300 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 - 0.642 Green X - 0.278 Blue X - 0.146 White X - 0.313

16

ViewSonic Corporation Confidential - Do Not Copy VX912-3

Red Y - 0.341 Green Y - 0.616 Blue Y - 0.090 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
1152 X 864 @75Hz
1024 X 768 @85Hz
800 X 600 @85Hz
640 X 480 @85Hz
Not Used
Not Used
Not Used

(54-71) Detailed Timing / Descriptor Block 1:
1280x1024 Pixel Clock: 108.00 MHz

Horizontal Image Size: 376 mm Vertical Image Size: 301 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

17

ViewSonic Corporation Confidential - Do Not Copy VX912-3

Digital Separate, Horizontal Polarity (+) Vertical Polarity (+)
______________________________________________________________________
(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:
PZ8050100001
______________________________________________________________________
(90-107) Detailed Timing / Descriptor Block 3:

Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 85 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 82 KHz
Pixel Clock - 140 MHz
Secondary GTF - Not Supported

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

Monitor Name:
VX912-3

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

ViewSonic Corporation Confidential - Do Not Copy VX912-3

18

6. THEORY OF OPERATION

This section describes the function of the LCD monitor per functional block.
This monitor includes MB board, power board and button board.

6.1 MB BOARD

The MB board is a two-layer, single-landed design with ground and internal planes provided. DC power from the power board
enter the board through a 6P connector. Other connector on the board is for button board .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, MCU with flash ROM , power regulator .

6.1.1 Flat panel controller… MST8131A (U3)
The heart of the system board is MStart MST8131A. The MST8131A is a graphics processing IC for LCD monitor. It
provides all key IC functions required for LCD panel. On-chip functions include a high-speed triple-ADC , PLL, high scaling
engine, OSD controller.

a) Clock Generation :

Crystal Input Clock (TCLK and XTAL). This is the input pair to an internal crystal oscillator and corresponding
logic. A 14.318 MHz crystal is recommended.

b) Analog to Digital Converter:

The MST8131A chip has three ADC's (analog-to-digital converters), one for each color (red, green and blue) .The
analog RGB signals are connected to MST8131A as described below

Pin Name Pin Number
Red + 63
Red - 62
Green + 60
Green - 59
Blue + 58
Blue - 57

c) OSD : The MST8131A has a fully programmable ,high-quality OSD controller. The on-chip static RAM(4096 words by

24 bits) stores the cell map and the cell definitions.

d) MTV312 Micro controller: The MTV312 micro controller(MCU) serves as the system micro controller. It’s programs

the MST8131A and manages other devices in the system such as the keypad, the backlight, LED, audio and non-volatile
RAM. using general purpose input/output (GPIO) pins.

ViewSonic Corporation Confidential - Do Not Copy VX912-3

19

Pin number Pin Name Pin Number Usage

21 P1.3 Key / Power on ,off
13 P3.4 NV_RAM (U4) SDA
14 P3.5 NV_RAM (U4) SCL
25 P1.7 Key_down
9 P6.3 Key_right
24 P1.6 Key_up
16 P6.2 Key_left
37 P4.1 Key_mute
34 P5.6 VGA connector
23 P1.5 Key_select
42 P5.3 LED_red
41 P5.4 LED_green
32 P6.6 LCD panel power1 on / off control
3 P5.0 LCD panel power2 on / off control
36 P4.0 Backlight on / off control

e) Panel Power Sequencing ( VDDCTRL1, 2) ( Pin 32, 3) : The MTV312 has two dedicated outputs VDDCTRL1 and 2

( Pin32 and Pin3) to control LCD power sequencing once data and control signals are stable.

f) Panel interface (Pin 1~25, Pin75~128) : The MTV312 driver interface is highly programmable. It supports dual bus /

dual port for SXGA drivers.

6.1.2 Power Regulator MC34063A (U6),AIC1739 (Q4) : The MC34063A 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 are determined by the equation,
Volt = 1.25 ( 1 + R67 / R66), In this case, the output voltage are 3.3 Volts
The AIC1739 is a low dropout positive adjustable regulator with minimum of 300mA output current capability.

So it is well suited for 3.3 V and 2.5 V Regulator.

6.1.3 Power Regulator MC34063A (U7) : The MC34063A 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 are determined by the equation,
Volt = 1.25 ( 1 + R85 / R86), In this case, the output voltage are 5.0 Volts for panel power.

20

ViewSonic Corporation Confidential - Do Not Copy VX912-3 2

6.3 Power(Inverter) Board

This is a specific power(inverter) power board for VE912 monitor 40W 12V 3.5A output power and backlight which
converters 12 Vdc to drive four cold cathode fluorescence tubes.

6.3.1 Inverter Electrical specification described as below.

Input

Output

6.3.2 power

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

Rated Input Voltage 12Vdc
Input Voltage Range 11.4 ~ 12.6 Vdc
Input Current <2A

On / Off control Voltage 2~3.3 for on , 0~1 for off
Rated Output Strike-on Voltage 1500Vrms
Rated Output Voltage 912Vrms at 7mA
Rate Output Frequency 40~50KHz
Rated Ourput Current 7~8 mA

Rated Input Voltage 90~240 Vac , 50 / 60Hz
Operation Input Voltage 90~260 Vac , 47 ~ 63Hz
Input Current <1.5A
Inrush Current <100A@120Vac
Standby Input Voltage 12Vdc
Output Voltage Regulation +/-5%
Output Ripple & Noise 120mVp-p
Rate Output Current <3.5A
Turn-on delay <3secs

ViewSonic Corporation Confidential - Do Not Copy VX912-3

21

5. Adjustment Procedure

1. Function test

(1) Test equipment

Color video Signal & pattern generator (or PC with SXGV resolution )

(2) Test condition

Warm-up at least 30mins is necessary under following condition before function test & alignment :

1. room temperature

2. With full-white screen , RGB , black pattern

3. with cycled display modes.

2. Test display modes

Item Timing Analog Digital

1 640 x 350 @ 70Hz, 31.5kHz Yes Yes
2 640 x 400 @ 60Hz, 31.5kHz Yes Yes
3 640 x 400 @ 70Hz, 31.5kHz Yes Yes
4 640 x 480 @ 60Hz, 31.5kHz Yes Yes
5 640 x 480 @ 67Hz, 35.0kHz Yes Yes
6 640 x 480 @ 72Hz, 37.9kHz Yes Yes
7 640 x 480 @ 75Hz, 37.5kHz Yes Yes
8 640 x 480 @ 85Hz, 43.27kHz Yes Yes

9 720 x 400 @ 70Hz, 31.5kHz Yes Yes
10 800 x 600 @ 56Hz, 35.1kHz Yes Yes
11 800 x 600 @ 60Hz, 37.9kHz Yes Yes
12 800 x 600 @ 75Hz, 46.9kHz Yes Yes
13 800 x 600 @ 72Hz, 48.1kHz Yes Yes
14 800 x 600 @ 85Hz, 53.7kHz Yes Yes
15 832 x 624 @ 75Hz, 49.7kHz Yes Yes
16 1024 x 768 @ 60Hz, 48.4kHz Yes Yes
17 1024 x 768 @ 70Hz, 56.5kHz Yes Yes
18 1024 x 768 @ 72Hz, 58.1kHz Yes Yes
19 1024 x 768 @ 75Hz, 60.0kHz Yes Yes
20 1024 x 768 @ 85Hz, 68.67kHz Yes Yes
21 1152 x 864 @ 75Hz, 67.5kHz Yes Yes
22 1152 x 870 @ 75Hz, 68.7kHz Yes Yes
23 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes
24 1280 x 1024 @ 75Hz, 79.97kHz Yes Yes
25 1280x 720 @ 60Hz, 45kHz (HDTV) Yes Yes

22

ViewSonic Corporation Confidential - Do Not Copy VX912-3

3. Test pattern

Item Test condition Pattern Specification Remark

1 Frequency & performance Cross-hatch pattern No noise is allow & all color is clear Pattern 1
2 Monitor saturation 16-gray scale pattern 3~4 level need to saturated when brightness

& contrast is 100%

3 RGB color performance RGB color Check the color temperature of RGB signal

color
4 Sub-pixel defect RGB color Check the sub-pixel defect Pattern 3, 4 , 5
5 Full white Full white Check the brightness ,CR & bright pixel

defect
6 Full black Full black Pattern 7

7. 5-cycle pattern 5-cycle pattern Check the BU Pattern 8

8. 1-dot pattern 1-dot pattern Check the flicker Pattern 9

Pattern 2

Pattern 3, 4, 5

Pattern 6

Pattern 1 Pattern2

Pattern 3 Pattern4

ViewSonic Corporation Confidential - Do Not Copy VX912-3

23

Pattern 5 Pattern6

Pattern 7 Pattern 8

Pattern 9

ViewSonic Corporation Confidential - Do Not Copy VX912-3

24

Firmware update procedure :

When you received a received monitor , please check whether the firmware version. If not , please following
procedure to upgrade to the latest version .

1. Equipment needed :

- VX912-3

- PC ( Personal computer )

- LPT cable

- Fixture (for LM5ISP)

- Firmware upgrade program

-

2. Connection :

To PC

25

To monitor

ViewSonic Corporation Confidential - Do Not Copy VX912-3

Appendix A : How to install the software for ISP :

0. To setup ISP environment :

Hardware:
PC or notebook, parallel(printer) cable, ISP tooling.
Software:
If OS was Win2000 or WinXP , please install “PORT95NT.exe”

In order to ensure can execute ISP program, please set BIOS in PC or Notebook as Fig 0.0

Fig 0.0

0.1 Double-click the “ PORT95NT.exe” in Windows & install the program. , see Fig 0.1

Fig 0.1

ViewSonic Corporation Confidential - Do Not Copy VX912-3

26

0.2 Keep on press “ Next “ 4 times to go through the installation processes, see Fig. 0.2

0.3 Choose “ Typical “ then press “ Next “ , see Fig. 0.3

Fig. 0.2

27

Fig. 0.3

ViewSonic Corporation Confidential - Do Not Copy VX912-3

0.4 Keep on press “ Next “ 4 times to go through the installation processes, see Fig. 0.4

0.5 Install completed , restart the PC or notebook. See Fig 0.5

Fig. 0.4

28

Fig. 0.5

ViewSonic Corporation Confidential - Do Not Copy VX912-3

1. Install ISP

1.1 User could download ISP driver and PORT95NT install from Myson Century website (www.myson.com.tw

1.2 After extracting the ZIP file , the total files list as Fig 1.0 , and double click the file of setup.exe to install.

)

Fig 1.0

1.3 Press “ Next “ button to continue., see Fig 1.1

29

Fig 1.1

ViewSonic Corporation Confidential - Do Not Copy VX912-3

1.4 Keep default setting or press “ Change “ button for selecting the path that you want , and then press “ Next
“ button to continue , see Fig 1.2

1.5 Press “ Install “ button to continue , see Fig 1.3

Fig 1.2

30

Fig. 1.3

ViewSonic Corporation Confidential - Do Not Copy VX912-3

1.6 Installation has finished , press “ Finish “ button , see Fig 1.4

Fig. 1.4

ViewSonic Corporation Confidential - Do Not Copy VX912-3

31

Appendix B : How to use software to upgrade the BIOS :

2.1 After installation , we could find the shortcut in the setting path or the program bar ( default setting ) , see Fig 2.1

2.2 Security file is a key to use ISP function , press “ OK “ button , see Fig 2.2

Fig. 2.1

Fig. 2.2

ViewSonic Corporation Confidential - Do Not Copy VX912-3

32

2.3 The warning is used to remind user of that different CPU rate may cause ISP function fail. (it’s limited by IIC

protocol ) , press “ OK “ button , see Fig 2.3

2.4 Press “ Create Security File “ button to key in Security code . Adjusting bar to decrease speed of IIC bus , See

Fig. 2.4 .

Fig. 2.3

Speed of IIC bus

33

Fig. 2.4

ViewSonic Corporation Confidential - Do Not Copy VX912-3

2.5 Fig 2.5 shows the setting for security code of software ISP . it needs 2 command No. and key in command

sequentially for 7C , 4C , 77. The command No.

and command must be set by user while coding. About the detailed of setting , please refer to section 6 boot

code of ISP .

34

Fig. 2.5

ViewSonic Corporation Confidential - Do Not Copy VX912-3

Appendix C : Use ISP to program MCU

3.1 Select MTV type first , load the binary or intel hex file that you want to program into the MCU , and select

“ AUTO” item , then press “ RUN “ button , see fig3.1

Step 2

Step 1

Step 3

Step 4

flash .

3.2 If user change the MTV type , it must load file again , or the buffer of load file will be cleared .

3.3 CRC ( cyclic redundancy check ) : the host can check CRC register’s result instead of reading every byte in

Fig. 3.1

ViewSonic Corporation Confidential - Do Not Copy VX912-3

35

The message of Check MCU CRC OK means that the host verify OK for the progress of program , see Fig.3.2

Fig. 3.2

ViewSonic Corporation Confidential - Do Not Copy VX912-3

36

Packing procedure

1.1 Paste protection film to protect the monitor (Figure.1)

1.2 Put the monitor in EPE bag & seal the with tape . (Figure.2)

Figure.1 Figure.2

1.3 Put the cushion on the monitor (Figure.3)

1.4 Put the monitor into carton & put all the accessories into the carton .Then close the carton .
(Figure.4)

Figure 3 Figure 4

QSG

Power cord

ViewSonic Corporation Confidential - Do Not Copy VX912-3

37

Disassemble monitor

2.1 Turn the monitor , face to back-side & take the I/O cover off. (Figure 5)

2.2 Remove the stand back cover (Figure 6)

(Figure 5) (Figure 6)

2.3 Remove the 4pcs of black hinge screw & separate the stand & head part (Figure 7)

2.4 Face-down & put the monitor on soft surface of desktop (Figure 8)

Figure 7 Figure 8

Screws Screws

ViewSonic Corporation Confidential - Do Not Copy VX912-3

38

2.5 Remove the 4 black screw on 4 corners .& separate the cover & front-bezel (Figure 9)

2.6 Remove the screws which for fixed the B/B & pull the cable out from the connector on M/B (Figure 10)

Figure 9 Figure 10

2.7 Remove the B/B (Figure 11)

2.8 Remove the screws on PCB shield & remove it . (Figure 12)

Figure 11 Figure 12

Screws

ViewSonic Corporation Confidential - Do Not Copy VX912-3

39

2.9 Remove the MB-LCD connector & loosen the 4 screws on PCB holder . (Figure 13)

2.10 Separate the PCB holder & panel . (Figure 14)

Figure 13 Figure 14

2.11 Loosen the 4 screws on the sides of panel (Figure 15)

2.12 Remove the front bezel & panel (Figure 16)

2.13 Remove the 4 hexagon screws beside the DVI & D-sub connector . (Figure 17)

2.14 Remove the screws which fixed the power board & Mainboard (Figure 18)

Screws

Figure 15 Figure 16

Figure 17 Figure 18

40

ViewSonic Corporation Confidential - Do Not Copy VX912-3

6. Troubleshooting Flow Chart

1. No Power

ViewSonic Corporation Confidential - Do Not Copy VX912-3

41

2. No Characters, Missing Color

ViewSonic Corporation Confidential - Do Not Copy VX912-3

42

3. Always show NO SIGNEL

ViewSonic Corporation Confidential - Do Not Copy VX912-3

43

7. Recommended Spare Parts List

ViewSonic Model Number: VS10162
Serial No. Prefix: PZ8 Rev: 1a

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

1

Accessories:

2 ADP/INV,FSP043-2PI01 90~264V GP B-00003993 AS05B312D00 power board 1

PC Board Assembly:

3 L7VD BUTTON/B ASSY GP B-00005207 1SL9V0BB003 button board 1
4 L9TA M/B ASSY(RTD2523-LF) GP B-00006037 1SL9VAMB003 main board 1
5 L9VDQ-4 STAND SUB ASSY GP C-00005372 37L9V0SU002 stand 1

Cabinets:

6 L9VDQ-4 LCD COVER SUB ASSY GP C-00005376 35L9V0LS009 back cover 1
7 I/O COVER L9V(EBL9V003,REV3A) M-CV-0830-2593 EBL9V003011 I/O cover 1
8 L9VDQ-4 LCD BEZEL ASSY GP C-00005432 34L9V0LB018 front bezel 1
9 CABLE MB-VGA (15/15P,1.8M)L7VD GP CB-00002602 DDL7VDPC005 VGA cable 1

Cables:

10 CABLE ASSY L0T MB-DVI(24P,REV2A) GP CB-00003440 DD0L0TTH108 DVI cable 1
11 CABLE LVDS(30P,140MM,LINKTEC,AU)L9VA GP CB-00004152 DD0L9VLC023 MB-LCD cabel 1
12 CABLE AUDIO(ST,1.8M)BLACK W9ZA GP CB-00005211 DDW9ZAPA009 Audio cable 1
13 CABLE MB-BUTTON(10P/8P,240MM)W0E GP CB-00005371 DD0W0ETH002 cable for Button-MB 1
14

Documentation:

15 SPEAKER ASSY L9VDQ FG-TE230 GP E-00005213 DN0TE230F06 Speaker ASSY 1

Electronic

16 LCD(TFT) 19" QD19EL01 REV:01" GP E-00006038 AA19EL01001 LCD panel 1

Components:

17

Miscellaneous:

18 RUBBER PLUG VESA L9V(GAL9V002,REV3A)GP M-MS-0808-9815 GAL9V002014 RUBBER PLUG VESA 1
19 SCREW M4.0*8-B(NI,NYLOK)GP M-SCW-0824-0795 MM40080BCI5 screw 4

Hardware:

20 SCREW F3.0*6-B(NI)GP M-SCW-0824-0813 MF30060BBJ6 screw 7
21 SCREW M3.0*4.0-I(NI) GP M-SCW-0824-6802 MM30040IBJ9 screw 8
22 CARTON VX912 L9VD(HFL9V005,REV3A)GP P-00001432 HFL9V005018 carton 1

Packing Material:

23 EPE BAG L9VD(HAL9V002,REV3A) M-MS-0808-9817 HAL9V002014 EPE bag 1
24 END CAP-L L9V(HBL9V001,REV3A)GP P-FM-0602-0896 HBL9V001019 cushion 1
25 END CAP-R L9V(HBL9V002,REV3A)GP P-FM-0602-0897 HBL9V002015 cushion 1

POWER CORD SP-023+IS-14 1.8M(B)EU GP A-PC-0106-0227 DM333181801 power cord 1

CD+QSG VX912 L9VDQ-1A(HGL9VD01,REV3A) GP DC-00006036 HGL9VD01011 user guide 1

LCD FILM L9V(JXL9V001,REV3A) GP M-MS-0808-9682 JXL9V001010 LCD film 1

Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary items.
Remark 2:

All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic
Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.

RECOMMENDED SPARE PARTS LIST (VX912-3)

Description

ViewSonic Corporation Confidential - Do Not Copy VX912-3

44

BOM LIST (VX912-3)

ViewSonic Model Number: VS10162
Rev: 1a

Serial No. Prefix: PZ8

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

1 N/A 1L9VZZXVS71 L9V LCD MONITOR(L9VDQ-1A)EU GP
2 B-00004169 21L9TAMB090 L9TA M/B ASSY(RTD2523-LF) GP 1
3 N/A 31L9TASS079 L9TA M/B S/S ASSY(RTD2523-LF) GP 1

4 N/A CC62204MD23 CAP EC 22U 25V(+-20%,105C,5*11,2KHR)GP
5 N/A CC71004MD68 CAP EC 100U 25V(+-20%,105C,6*11,2K) GP C70 1
6 N/A CC73303MD51 CAP EC 330U 16V(+-20%,105C,8*11,LESR)GP C6,C91,C93,C97,C99,EC1 6
7 N/A BG611059327 XTAL DIP 11.0592MHZ(+-30PPM,49/S) GP Y2 1

8 N/A BG624576104 XTAL DIP 24.576MHZ(+-30PPM,49/S) GP Y1 1

9 N/A AL007496D02 IC(20P) TDA7496L(DIP) GP U9 1
10 N/A AL007496D29 IC(20P) UTC TDA7496LK(DIP) GP U9 1
11 N/A DFTJ05FR037 CONN DIP PHONE JACK 5P FR(J303-1-A-G+)GP J3 1
12 N/A DFHD04MR132 CONN DIP HEADER 4P 1R MR(P2.0,H4.1) GP JP2 1
13 N/A DFHD10MR324 CONN DIP HEADER 10P 1R MR(P2.0,H4.1) GP CN6 1
14 N/A DFHD30MR267 CONN DIP HEADER 30P 2R MR(P2.0,H4.0) GP CN5 1
15 N/A DFHD08FR102 CONN DIP HEADER 8P 2R FR(P2.54,H5.0) GP CN1 1
16 N/A DFDS15FR041 CONN D-SUB 15P 3R FR(P1.15,H12.55) GP CN2 1
17 N/A DFDI30FR022 CONN DVI-I DIP30P 3R FR(P1.905 H10.04)GP CN4 1
18 N/A DFDI30FR103 CONN DVI-I DIP30P 3R FR(P1.905,H10.04)GP CN4 1
19 N/A 23L7VDBB001 L7VD BUTTON/B ASSY GP 1
20 N/A DFHD08MR319 CONN DIP HEADER 8P 1R MR(P2.0,H4.1) GP CN1 1
21 N/A BEYG0014DA0 LED(DIP) YELLOW/GREEN(L-3WYGW-F01) GP LED1 1
22 N/A DAL7VDTB113 PCB(BUTTON) L7VD TL(1L,180*15,REVA) GP 1

23 N/A DHP0002B205 SWITCH PUCH BUTTON(PT-002-B2,50MA,12V)GP SW1,SW2,SW3,SW4,SW5 5
24 B-00003993 AS05B312D00 ADP/INV,FSP043-2PI01 90~264V GP 1

25 N/A 24L9V0LB034 L9VDQ-1A LCD BEZEL ASSY GP 1
26 N/A 36L9V0PS006 L9VDQ-1A PCB SHIELDING ASSY SPK GP 1
27 C-00005432 34L9V0LB018 L9VDQ-1A LCD BEZEL SUB ASSY GP 1
28 N/A FBL9V011014 LCD PANEL LOCK METAL L9VDQ(R3A)GP 2
29 N/A FCL9V002016 POWER MYLAR L9VDQ-4(FCL9V002,REV3A) GP 1
30 M-MS-0808-8984 FCL70004010 LCD MYLAR L70L-E(FCL70004,REV3A)GP 1
31 M-SCW-0824-6802 MM30040IBJ9 SCREW M3.0*4.0-I(NI) GP 8
32 M-SCW-0824-0813 MF30060BBJ6 SCREW F3.0*6-B(NI)GP 5
33 M-SCW-0824-0726 MF30080BBJ5 SCREW F3.0*8L,B,NI GP 4
34 M-SCW-0824-6799 MM35080BBW2 SCREW M3.5*8-B (NI,WASHER)GP 1
35 M-MS-0808-8986 MBLI1004018 IO NUT LI1(MBLI1004,REV3A)GP 4
36 N/A GAL5T002012 RUBBER-HOLDER L5TL-N(GAL5T002,REV3B)GP 4
37 PL-00001806 GAL5T001016 RUBBER-HOLDER L5TL-E(GAL5T001,REV3B)GP 4
38 CB-00004152 DD0L9VLC023 CABLE LVDS(30P,140MM,LINKTEC,AU)L9VA GP 1
39 CB-00005371 DD0W0ETH002 CABLE MB-BUTTON(10P/8P,240MM)W0E GP 1
40 E-00005213 DN0TE230F06 SPEAKER ASSY L9VDQ FG-TE230 GP 1
41 N/A FCL9V005015 AL FOIL L9VDQ-4(FCL9V005,R3A)100*80 GP 1
42 N/A FCM7T004014 AL FOIL M7T(FCM7T004,REV3A) GP 3
43 N/A FCL7G001016 AL FOIL L7G(FCL7G001,REV3A)HAN GP 1
44 M-MS-0808-9248 FCL7A001014 AL FOIL L7A(FCL7A001,REV3A) GP 1
45 N/A 25L9V0LC007 L9VDQ-4 LCD COVER ASSY GP 1
46 C-00005376 35L9V0LS009 L9VDQ-4 LCD COVER SUB ASSY GP 1
47 N/A 26L9V0SA008 L9VDQ-4 STAND ASSY GP 1
48 C-00005372 37L9V0SU002 L9VDQ-4 STAND SUB ASSY GP 1
49 N/A 2AL9V0PTQ28 L9VDQ-1A PANEL KIT ASSY(QDI) GP 1
50 E-00006038 AA19EL01001 LCD(TFT) 19" QD19EL01 REV:01" GP 1
51 N/A AZL9V0BQ006 L9VDQ-1A SW BIOS IMAGE RTD2523(QDI) 1
52 HW-00001807 FBL9V009010 LCD BKT L-R L9VD-1(FBL9V009,REV3B)GP 2
53 M-SCW-0824-0728 MM30050IBJ3 SCREW M3.0*5.0-I(NI) GP 4
54 N/A 27L9V0CS014 L9VDQ-1A CHASSIS ASSY GP 1
55 HW-00005216 3FL9V0HS002 L9VDQ-4 HINGE COVER SUB ASSY GP 1
56 C-00001778 EBL9V002015 STAND COVER R L9V(EBL9V002,REV3A)GP 1
57 M-CV-0830-2593 EBL9V003011 I/O COVER L9V(EBL9V003,REV3B)GP 1
58 M-MS-0808-9815 GAL9V002014 RUBBER PLUG VESA L9V(GAL9V002,REV3A)GP 4
59 M-SCW-0824-6859 MM40060IL69 SCREW M4*6-I (BNI)(NYLOK))GP 4
60 M-SCW-0824-0795 MM40080BCI5 SCREW M4.0*8-B(NI,NYLOK)GP 4
61 M-SCW-0824-6894 MF30060BJ28 SCREW F3.0*6-B(BNI)GP 2
62 N/A 28L9V0PK054 L9VDQ-1A PACKING ASSY GP 1
63 CB-00002602 DDL7VDPC005 CABLE MB-VGA (15/15P,1.8M)L7VD GP 1
64 CB-00003440 DD0L0TTH108 CABLE DVI L0T BLACK 1800(24P) GP 1
65 CB-00005211 DDW9ZAPA009 CABLE AUDIO(ST,1.8M)BLACK W9ZA GP 1
66 PL-00005198 JXLM5003011 HANDLE LM5S(JXLM5003,REV 3B) GP 1
67 P-FM-0602-0897 HBL9V002015 END CAP-R L9V(HBL9V002,REV3A)GP 1
68 M-MS-0808-9817 HAL9V002014 EPE BAG L9VD(HAL9V002,REV3A)GP 1
69 M-LB-0813-0747 HCL7V004013 CORE LABEL(HCL7V004,REV3A)GP 1
70 P-FM-0602-0896 HBL9V001019 END CAP-L L9V(HBL9V001,REV3A)GP 1
71 N/A HCL9V014014 ID LABEL VX912 L9VDQ-1A(HCL9V014,R3A)GP 1
72 M-LB-0813-0745 HCL7V002011 SERIAL LEBAL L7V(HCL7V002,REV3A) GP 1
73 P-00001432 HFL9V005018 CARTON VX912 L9VD(HFL9V005,REV3A)GP 1
74 DC-00006036 HGL9VD01011 CD+QSG VX912 L9VDQ-1A(HGL9VD01,REV3A) GP 1
75 M-MS-0808-9682 JXL9V001010 LCD FILM L9V(JXL9V001,REV3A) GP 1
76 M-LB-0813-1043 HCL70021011 HI-POT LABEL L70L(HCL70021,REV3A)GP 1
77 N/A HFL9V002019 SPACE PLATE L9V(HFL9V002,REV3A)GP 0.05
78 N/A HCL9V015011 8MS VX912-3 L9VDQ-1A(HCL9V015,REV3A) GP 1
79 N/A HCL5VC02019 ROHS LABEL(W) 27*27 L5VC(HCL5VC02,R3A)GP 1
80 N/A HCL9V008014 CARTON LABEL(3) L9VD(HCL9V008,REV3A)GP 1
81 N/A HCL7VC05013 ADDRESS LABEL L7VC (HCL7VC05,REV3A)GP 1
82 A-PC-0106-0227 DM333181801 POWER CORD SP-023+IS-14 1.8M(B)EU GP 1

C34,C46,C50,C53,C59,C8
4,EC2,EC3,EC5,EC6

10

ViewSonic Corporation Confidential - Do Not Copy VX912-3

45

8. Exploded Diagram and Exploded Parts List

ViewSonic Corporation Confidential - Do Not Copy VX912-3

46

EXPLODED PARTS LIST (VX912-3)

ViewSonic Model Number: VS10162
Rev: 1a

Serial No. Prefix: PZ8

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

1 N/A EAL9V009019 BEZEL L9V 1
2 N/A EAL9V006010 MIDDLE BEZEL L9V 1
3 N/A EBL9V004018 CONTROL BUTTON 1
4 M-MS-0808-9243 FEL7V003019 LOGO FRONT-VSC-38CM L7VC(FEL7V003,REV3A) 1
5 M-MS-0808-9401 EBL7V028019 LENS L7VD(EBL7V028,REV3A) 1
6 M-MS-0808-9402 FEL7V007014 BIRD LOGO L7VD(FEL7V007,REV3A) 1
7 N/A 23L7VDBB006 BUTTON/B ASSY 1
8 N/A FBL9V011014 LCD PANEL LOCK METAL L9V 2

9 M-SCW-0824-0726 MF30080BBJ5 SCREW F3.0*8L,B,NI 2
10 E-00006038 AA19EL01001 LCD(TFT) QDI QD19EL01 GP 1
11 HW-00001807 FBL9V009010 LCD BKT L9V(FBL9V004,REV3A) 2
12 M-SCW-0824-6802 MM30040IBJ9 SCREW M3.0*4.0-I(NI) GP 4
13 M-BK-0805-0079 FAL7V014017 PCB BKT L7VD(FAL7V014,REV3A) 1
14 CB-00002525 DD0L9VLC015 CABLE MB-LCDL9V-5 GP 1
15 B-00003993 AS05B312D00 ADP/INV,FSP043-2PI01 90~264V GP 1
16 B-00004169 21L9TAMB090 L9TA M/B ASSY(RTD2523-LF) N/A 1
17 CB-00005371 DD0W0ETH002 CABLE ASSY L7VD BUTTON-MB (8P-10P) 1
18 M-SCW-0824-6799 MM35080BBW2 SCREW M3.5*8-B (NI,WASHER) 1
19 M-SCW-0824-6800 MM30060IBJ8 SCREW M3.0*6.0-I(NI) 7

20 M-MS-0808-9405 FAL7V015013 PCB SHIELDING L7VD(FAL7V015,REV3A) 1
21 HW-00000989 MM30040IBJ8 SCREW M3.0*4.0-I(NI) 10
22 M-MS-0808-9811 GAL5M002011 RUBBER FOOT L5M(GAL5M002,REV3B) 4
23 M-SCW-0824-0813 MF30060BBJ6 SCREW F3.0*6-B(NI) 1
24 M-CV-0830-2589 EAL9V005013 STAND BKT COVER L9V(EAL9V005,REV3A) 1
25 M-MS-0808-9812 EBL9V001019 STAND COVER F L9V(EBL9V001,REV3A) 1
26 M-BK-0805-0110 FBL9V005014 STAND BKT L9V(FBL9V005,REV3A) 4
27 C-BS-0303-0553 EAL9V004017 STAND BASE L9V(EAL9V004,REV3A) 1
28 M-MS-0808-9813 FBL9V006011 STAND PLATE L9V(FBL9V006,REV3A) 1
29 M-SCW-0824-6859 MM40060IL69 SCREW M4*6-I (BNI)(NYLOK)) 4
30 M-SCW-0824-6894 MF30060BJ28 SCREW F3.0*6-B(BNI) 4
31 M-MS-0808-9404 EBL7V029015 WIRE CLAMP L7VD(EBL7V029,REV3A) 2
32 C-00001778 EBL9V002015 STAND COVER R L9V(EBL9V002,REV3A) 1
33 M-SCW-0824-6895 MF40080IBJ1 SCREW F4.0*8-I(NI) 8
34 M-BK-0805-0111 FBL9V002015 HNGE-BKT L9V(FBL9V002,REV3A) 1
35 M-CV-0830-2590 FBL9V001019 HINGE-L L9V(FBL9V001,REV3A) 1
36 M-CV-0830-2591 FBL9V003011 HINGE-R L9V(FBL9V003,REV3A) 1
37 M-MS-0808-9411 FBL70008014 LOCK METAL L70B(FBL70008,REV3A) 1
38 N/A EAL9V008012 LCD COVER L9V(EAL9V008,REV3A) 1
39 M-SCW-0824-6859 MM40060IL69 SCREW M4.0x6 (BNI)NYLOCK 6
40 M-CV-0830-2593 EBL9V003011 I/O COVER L9V(EBL9V003,REV3A) 1
41 M-MS-0808-9253 FEL7V005011 LOGO PLATE 1
42 M-SCW-0824-0870 MS40070B808 SCREW M4.0x7 (BMC)NYLOCK 4
43 M-MS-0808-9815 GAL9V002014 RUBBER PLUG VESA L9V 4
44 PL-00001804 GAL70002015 RUBBER HOLDER 2
45 PL-00001805 GAL70005014 RUBBER BKT 2
46 PL-00001806 GAL5T001016 RUBBER HOLDER 4

ViewSonic Corporation Confidential - Do Not Copy VX912-3

47

PACKING PART LIST ( VX912-3 )

ViewSonic Model Number: VS10162
Rev: 1a

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

1 N/A 1L9VZZXVS71 VX912-3 unit N/A
2 P-FM-0602-0896 HBL9V001019 END CAP(L) 1
3 P-FM-0602-0897 HBL9V002015 END CAP(R) 1
4 DC-00006036 HGL9VD01011 User manual & CD 1
5 A-PC-0106-0227 DM333181801 Power cord 3P 1.8M 1
6 P-00001432 HFL9V005018 Carton 1
7 M-LB-0813-1042 HCL7V019011 Carton label 1
8 M-MS-0808-9817 HAL9V002014 EPE bag 1

ViewSonic Corporation Confidential - Do Not Copy VX912-3

48

9. Block Diagram

11.059MHz

Keypad

Crystal

ISP

MTV312V64

CPU

CSZ

IRQ

Interface

RST

Host

EEPROM

24C16

SDA

SDA

SCL

SCL

24.576MHz

Crystal

Clock

GEN.

RTD2523

24C02

DDC

DVI

ANALOG

RGB

AR AG AB

Interface

Triple

ADC

DDC-SCL;DDC-SDA

HSYNC ,VSYNC

ON/OFF

BRIGHTNESS

Inverter

Control

12V

ADAPTOR

Backight

Inverter

control

Panel

5V

Si2301DS

Switch

CLK+

CLK-

Interface

LVDS+

LVDS-

19” Panel

Panel

AIC1117ADJ

AIC117ADJ

12V

AIC1563

POWER

Backlight

3.3V

2.5V

5V

12V

49

ViewSonic Corporation Confidential - Do Not Copy VX912-3

10. Schematic Diagrams

DVI

PC
VGA

ANALOG RGB

+3.3V

EEPROM
24LC16

DDC

+3.3V

+2.5V

RSDS AND LVDS

SCALAR RTD2523 LCD

+3.3V

+3.3V

MICRO-CONTROLLER
MTV312

+3.3V

+12V

POWER

LCDPWR_ON3.3V

LCDPWR_ON12V

LCDVCC

PANEL(17
19 RSDS
AND
LVDS)

BRIGHTNESS

INVCTRL

AUDIO_VOLUME

AC 90-264V

50

ViewSonic Corporation Confidential - Do Not Copy VX912-3

POWER INVERTER
AND AUDIO BOARD

AUDIO_MUTE

+12V

AIC
1563

+5.0V

AIC1739

AIC1739

+2.5V

+3.3V

ViewSonic Corporation

Model

Title

Date Rev:

BLOCK DIAGRAM

DDC_SDA

IN-H

IN-V

DDC_SCL

VGA/NC

CN2

PAGE1 VGA
INPUT

DDC_SDA

1617

11

12

13

14

15

1
6
2
7
3
8
4
9
5
10

RED+IN
RED-IN
GREEN+IN
GREEN-IN
BLUE+IN
BLUE-IN

DSUB_5V

PIN 10 VGA_CON

DSUB_5V

DDC_SCL

RED+IN

RED-IN

GREEN+IN

GREEN-IN

L8 0/6

L9 0/6

R24

75/6/F

R27

75/6/F

C17

NC

C20

NC

R23 100/6

R25 100/6

R26 100/6

R28 100/6

R29 100/6

C16 0.047u/6

C18 0.047u/6

C19 0.047u/6

C21 0.047u/6

C22 0.047u/6

R30
1M/6

RED+

RED-

GREEN+

GREEN-

SOGIN

DEL L11,C32,U6,R51,R52 2004/6/17

DAN217K/NC

RED+IN

IN-H

D7

3

GND

IN-H

DDC_SCL

ADC_VCC

21

D10

1 3

Z5.6/NC

25

RED-IN
GREEN-IN
BLUE-IN

DAN217K/NC

GREEN+IN

IN-V

CN4

RX2-

RX2+

GND
RX4-

RX4+

SCL
SDA

VS

RX1-

RX1+

GND
RX3-

RX3+

5V

GND

HP

RX0-

RX0+

GND
RX5-

RX5+

GND

RXC+

RXC-

1
3
5
7

9
11
13

D8

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

CN3

+

+

+

+

+

+

+

+

+

+

+

+

+

+

VGA INPUT

21

D11

Z5.6/NC

1 3

2
4
6
8
10
12
14

BLUE+IN

DDC_SDA

RED+IN
GREEN+IN
BLUE+IN
GND
IN-V
DDC_SDA
DSUB_5V

DAN217K/NC

21

D9

3

DDC_SCL

D12

Z5.6/NC

1 3

DDC2_SCL
DDC2_SDA

R48 10K/6NC
R49 100/6NC

DEL D29 2004/6/17

D13

Z5.6/NC

1 3

D18

Z5.6/NC

1 3

Bus_Power

Hot_plug

D20

Z5.6/NC

1 3

1 3

1 3

D19

Z5.6/NC

D21

Z5.6/NC

BLUE+IN

BLUE-IN

L10 0/6

R32

75/6/F

IN-H

C24

NC

L31 0/6

R34 100/6

R35

2K/6

IN-V

R37

2K/6

Add R156~R162 damping RES 2004/4/16

R155 0
R156

R157 0
R158 0

R159 0
R160 0

R161 0
R162 0

0

R31 100/6

R33 100/6

R36 100/6

TX2­TX2+

TX1­TX1+

TX0­TX0+

TXC+
TXC-

C26

22P/6

VGAVS

C28

22P/6

C23 0.047u/6

C25 0.047u/6

VGAHS

BLUE+

BLUE-

AHS

D34

Z3.3V

1 3

D35

Z3.3V

1 3

Add D34,D35,L31
2004/6/17

AVS

Bus_Power

C29 0.1U/6/NC

U5

1

NC

2

NC

3

NC

4 5

VSS SDA

M24C02/NC

VCC

VCLK

SCK

8
7
6

3DVCC

R44
2K/6/NC

Z5.6/NC

1 3

D22

D17

BAT54C-GS08/NC

R45
2K/6/NC

R46 100/6/NC

R47 100/6/NC

D23

Z5.6/NC

1 3

DDC2_SCL
DDC2_SDA

C31

26

1U/6NC

D24

Z5.6/NC

1 3

C30

0.1U/6/NC
D25

Z5.6/NC

1 3

D26

Z5.6/NC

1 3

D27

Z5.6/NC

1 3

D28

Z5.6/NC

1 3

DVI-D/NC

51

ViewSonic Corporation Confidential - Do Not Copy VX912-3

R50

10K/6NC

ViewSonic Corporation

Model

Title

Date Rev:

VGA AND DVI INPUT

3DVCC

L12

FEB_0805

C34

10uF/16V

C35

0.1u/6
C36

0.1u/6
C37

0.1u/6
C38

0.1u/6
C39

0.1u/6
C40

0.1u/6
C41

0.1u/6
C42

0.1u/6
C43

0.1u/6
C44

0.1u/6
C45

R2.5DVCCR3DVCC

0.1u/6
C46

10uF/16V

L13 FEB_0805

2.5DVCC

2.5DVCC

C47

0.1u/6

TMDS_AVCC

R57

NC

R58

4.7K/6

3AVCC1

3PVCC

3AVCC2

3PVCC

R54

4.7K/6

R55

4.7K/6/NC

3AVCC2 TMDS_AVCC

L15 FEB_0805

C54

22uF/16V

C60

0.1u/6

0.1u/6

L19 FEB_0805

C33 22pF/6

R53
NC

C48 22pF/6

L14 FEB_0805

0.1u/6

C49

PLL_GND

C53

+

ADC_VCC3AVCC1

+

C59

C61

22uF/16V

ADC_GND

C43.C44.C45 IC

10uF/16V

C50

C51

R56 1K/6

TX2+
TX2­TX1+
TX1­TX0+
TX0­TXC+
TXC-

Near to Chip

0.1u/6
C56

C55

BLUE+
BLUE-

SOGIN
GREEN+
GREEN-

RED+

RED-

0.1u/6

0.1u/6

C62

盡量靠近

XO

Y1

24.576MHz

XI

0.1u/6

C52

0.1u/6
C57

0.1u/6

C63

AHS
AVS

0.1u/6

RX2P
RX2N
RX1P
RX1N
RX0P
RX0N
RXCP
RXCN

0.1u/6

0.1u/6

C58

C64 0.1u/6

B+
B­SOG
G+
G­R+
R-

AHS
AVS

XO
XI

U7

1

XO

2

XI

4

DPLL_VDD

5

APLL_VDD

3

DPLL_GND

8

APLL_GND

6

PLL_TEST1

7

PLL_TEST2

9

TMDS_TST/PWM1

12

EXT_RES

14

RX2P

15

RX2N

17

RX1P

18

RX1N

20

RX0P

21

RX0N

23

RXCP

24

RXCN

11

TMDS_VDD

13

TMDS_VDD

19

TMDS_VDD

26

TMDS_VDD

10

TMDS_GND

16

TMDS_GND

22

TMDS_GND

25

TMDS_GND

30

B+

31

B-

33

SOG/ADC_TEST

34

G+

35

G-

37

R+

38

R-

29

ADC_VDD

36

ADC_VDD

41

ADC_VDD

28

ADC_REFIO

27

ADC_GND

32

ADC_GND

39

ADC_GND

40

ADC_GND

42

AHS

43

AVS

120

109

3.3V Ground

50

96

3.3V Ground

SCLK

54

84

3.3V Ground

SDIO[0]

53

72

3.3V Ground

TCON[4]/SDIO[1]

52

57

3.3V Ground

3.3V Ground

TCON[2]/SDIO[3]/PWM2

TCON[3]/SDIO2]

51

48

111

3.3V Ground

SCSB

56

121

110

3.3V Power

3.3V Power

RESET#

95

3.3V Power

71

49

58

83

3.3V Power

3.3V Power

3.3V Power

3.3V Power

127

2.5V Power

RTD2523

DDCSDA

DDCSCL2

DDCSDA2

DDCSCL

47

126

125

46

69

98

2.5V Power

2.5V Power

2.5V Power

TCON[11]/V[0]

TCON[10]/V[1]

TCON[9]/V[2]

114

115

116

117

128

97

2.5V Ground

TCON[7]/V[4]

TCON[8]/V[3]

118

119

444570

TCON[12]/COUT/PWM2

TCON[13]/COUT/PWM2

2.5V Ground

2.5V Ground

2.5V Ground

TCON[0]/VCLK

TCON[1]/V[7]

TCON[6]/V[5]

TCON[5]/V[6]

124

123

122

PWM0/REFCLK

AR1N
AR1P/TCON[0]
AR2N/TCON[1]
AR2P/TCON[5]
AR3N/TCON[6]
AR3P/TCON[7]

AG1N/TCON[8]

AG1P/TCON[9]
AG2N/TCON[10]
AG2P/TCON[11]

BG3N

BG3P
BCLKN
BCLKP

BB1N
BB1P
BB2N
BB2P
BB3N
BB3P

AG3N/TEAN
AG3P/TEAP

ACLKN/TEBN

ACLKP/TEBP

AB1N/TECN

AB1P/TECP

AB2N/TECLKN

AB2P/TECLKP

AB3N/TEDN

AB3P/TEDP

BR1N/TOAN

BR1P/TOAP

BR2N/TOBN

BR2P/TOBP

BR3N/TOCN

BR3P/TOCP

BG1N/TOCLKN

BG1P/TOCLKP

BG2N/TODN
BG2P/TODP

113
112
55

108
107
106
105
104
103
102
101
100
99

68
67
66
65
64
63
62
61
60
59

94
93
92
91
90
89
88
87
86
85

82
81
80
79
78
77
76
75
74
73

AR1N
AR1P
AR2N
AR2P
AR3N
AR3P
AG1N
AG1P
AG2N
AG2P

BG3N
BG3P
BCLKN
BCLKP
BB1N
BB1P
BB2N
BB2P
BB3N
BB3P

RXEIN0­RXEIN0+
RXEIN1­RXEIN1+
RXEIN2-

RXEIN2+
RXECKIN­RXECKIN+

RXEIN3-

RXEIN3+

RXOIN0-

RXOIN0+

RXOIN1-

RXOIN1+

RXOIN2-

RXOIN2+
RXOCKIN­RXOCKIN+

RXOIN3-

RXOIN3+

VBRI
VOLUME

RTD_SCLK

RTD_SDO/SDI

SDIO1
SDIO2
SDIO3

RTD_SCSB

RESET

DDC_SDA

DDC_SCL

R66 100/6

53

ViewSonic Corporation Confidential - Do Not Copy VX912-3

TP2

TCON5

TCON8

TCON7

TCON9

TCON11

TCON6

TCON10

1

TEST POINT

TCON5
TCON6 XSTB
TCON7 POL
TCON8 BXDIO

TCON9
TCON10 YDIO
TCON11 YOE

22/6R59
22/6R60
22/6R61
22/6R62

22/6R63
22/6R64
22/6R65

FXDIO

YCLK

ViewSonic Corporation

NCR71

NCR72

Model

Title

RTD_2523

Date Rev:

VCPU

Reset circuit

3DVCC

C

3AVCC1

RESET

VCPU

12

3AVCC1

C75

0.1U/6

1
2
3
4 5

D32

NC/ 1N4148

R147

4.7K/6

U8

A0

VCC
A1
A2
VSS SI

24LC16

PARAMETER

WP

SCK

EEPROM

R165

NC/100K/6

C103

NC/1U/16V

8
7
6

R78

10K/6

13

Q20

2

R166
0/6

NC/2N3906

2

3

1

D33

NC/DAN202U

VCPU

C86

NC/1U/16V

R106
NC/82K/6

LED_G

LED_R

+

C84

22uF/16V

Add Q20,R165,R166,C103,D32,D33
2004/6/16

R80

2K/6

R81

2K/6

R83 100/6
R92 100/6

PANEL_PW12

MUTE

Hot_Plug

STBY

C87 10pF/6

C88 10pF/6

VCPU

R142 NC

IICSCL

IICSDA

LED_R

LED_G

Y2

11.0592MHz

PWR_SEL

R41

6.8K/6

VCC12

I1

12

X1

11

X2

7

RESET

19

INT0/P3.2

14

ISCL/P3.5/T1

13

ISDA/P3.4/T0

27

P6.0/AD0

26

P6.1/AD1

16

P6.2

9

P6.3

30

P6.4

31

P6.5

32

P6.6

33

P6.7

MTV312M64

C85

0.1u/6

5

6

NC

R79

10K/6

R82 4.7K/6

R93 4.7K/6

VCPU

810

4

43

NC

VCCVSS

VDD3

DA8/HLFHO

DA9/HALFV

44

P5.0
P5.1
P5.2

VSYNC

HSYNC

P5.3
P5.4
P5.5
P5.6

P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7

DA7
P4.0
P4.1
P4.2

P3.1/TXD

P3.0/RXD

Q13

2

2N3906

3
2
1
42
41
40
34
39
38
17
18
20
21
22
23
24
25
35
36
37
15

28
29

2

13

R164 22

Q12

13

2N3906

B

3DVCC

MENU
SEL
PWR
DOWN
UP
RIGHT
LEFT

Junction from
A change to B

VCPU

R163

4.7K/6

R39 4.7K/6
R40 4.7K/6

E

33K/6

R87

0.1U/6

C76

MENU
SEL
PWR
UP
DOWN
RIGHT
LEFT

R124 100/6
R125 100/6

R88

C77

33K/6

0.1U/6

VCPU

R89

C78

33K/6

0.1U/6

33K/6

33K/6

R90

R91

0.1U/6

0.1U/6

C79

C80

AVS

VRMT

R109 4.7K/6

R108 4.7K/6

R84

C81

33K/6

R85

0.1U/6
C82

R110

4.7K/6

VCPU

33K/6

R95 1K/6
R96 1K/6
R97 1K/6
R98 1K/6
R99 1K/6
R100 1K/6
R101 1K/6
R102 220/6
R103 220/6

0.1U/6

4.7K/6

less R94 to CN6 pin 11

R101,R103 net swap

CN6

10
9
8
7
6
5
4
3
2
1

4501-10-10P-R

TO BUTTON BOARD

VCPU

R111

TxD
RxD

R112

NC

R113

NC

R114

4.7K/6

DDC_SDA
DDC_SCL

R115

4.7K/6

4.7K/6

5DVCC

2.0mm pitch
90° E&T
4607-11Pin

R116

R120 NC

PANEL_PW3
SDIO1
SDIO2
SDIO3
RTD_SDO/SDI
RTD_SCLK
RTD_SCSB

JP1

1
2
3
4

HEADER 4

R38

2K/6

53

ViewSonic Corporation Confidential - Do Not Copy VX912-3

ViewSonic Corporation

Model

Title

Date Rev:

MCU & BUTTON

5DVCC

5DVCC

VCC12

L22

FEB_1206

GND

L21

NC

R67

82K/6

R70

82K/6

Q9

31

PANEL_5_12VCC

2

C67

2200P/6

DTC144EUA

2

PANEL_3VCC

Q8 SI2301DS

1

PANEL_PW12

L16
FEB_0805/NV

L20

3

C68

BB3P
BB3N

BB2P
BB2N

BB1P
BB1N

BCLKP
BCLKN

BG3P
BG3N

RXOIN0­RXOIN0+

RXOCKIN­RXOCKIN+

RXOIN1­RXOIN1+

RXOIN2­RXOIN2+

RXOIN3­RXOIN3+

FEB_0805/NC

2200P/6

R68

10K/6

DG3

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

RSDS_CON30

L17

L18

FEB_0805/NC

PANEL_5_12VCC

1S2

J1

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

FEB_0805/NC

C65

C69

0.1U/6

0.1U/6/NC

C66

PANEL_5_12VCC

C70

100U/16V

RXEIN0­RXEIN0+

RXECKIN­RXECKIN+

RXEIN1­RXEIN1+

RXEIN2­RXEIN2+

RXEIN3­RXEIN3+

AG2P
AG2N

AG1P
AG1N

AR3P
AR3N

AR2P
AR2N

AR1P
AR1N

FXDIO
XSTB
POL
BXDIO

YCLK
YDIO
YOE

0.1U/6/NC

J2

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

20

20

21

21

22

22

23

23

24

24

25

25

26

26

27

27

28

28

29

29

30

30

31

31

32

32

33

33

34

34

35

35

36

36

37

37

38

38

39

39

40

40

41

41

42

42

43

43

44

44

45

45

46

46

47

47

48

48

49

49

50

50

RSDS_CON50/NC

3DVCC

R75

NC/82K/6

R77

NC/10K/6

31

NC/2200P/6

Q11 NC/DTC144EUA

2

C

B

2

C71

3

1E2

Q10 NC/SI2301DS

3

1

PANEL_PW3

If panel is 3.3V LVDS IF, L30 must add the part 2004/4/14

C72

NC/2200P/6

R76

NC/10K/6

C73

NC/0.1U/6

PANEL_3VCC

PANEL_3VCC

C74

NC/100U/16V

RXOIN0­RXOCKIN­RXOIN1­DGND
RXOIN2­RXOIN3­RXEIN0­DGND
RXECKIN­RXEIN1­RXEIN2­RXEIN3-

DGND

PANEL_5_12VCC

L30
NC/FEB_1206

PANEL_3VCC

1
3
5
7

9
11
13
15
17
19
21
23
25
27
29

PANEL_5_12VCC

CN5

1
3
5
7
9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

1841 30P

RXOIN0+

2

2

RXOCKIN+

4

4

RXOIN1+

6

6

DGND

8

8

RXOIN2+

10

RXOIN3+

12

RXEIN0+

14

DGND

16

RXECKIN+

18

RXEIN1+

20

RXEIN2+

22

RXEIN3+

24

DGND

26

PANEL_5_12VCC

28

PANEL_5_12VCC

30

ViewSonic Corporation

Model

Title

PANEL INTERFACE

ViewSonic Corporation Confidential - Do Not Copy VX912-3

54

Date Rev:

VCC12

R128
1K/6/NC

PC AUDIO-IN

J3

ZD005D100/NC

1
5
4
3
2

Z0412

AGND

L_LINE

R_LINE

VOLUME

L25 600/CX601T02001/NC

1 2

1 2

L26 600/CX601T02001/NC

220P/6/NC

C95

C96

220P/6/NC

3BC

R132 100/6/NC

Z0416

R133 100/6/NC

12

MUTE

3

2

1

R129 10K/6/NC

Q15

SN7002E/NC

E

LIN_PCZ0415

RIN_PC

VCC12

R135

MUTE

AGND

20K/6/NC

2

R136

20K/6/NC

R138
10K/6/NC

R139 10K/6/NC

31

Q16

DTC144EUA/NC

R130 10K/6/NC

C89

1U/8/NC

AGND

C92 0.47U/8/NC

C94 0.47U/8/NC

C98

0.1U/8/NC

C99

330U/16V

VCC12

VOL

R1313.9K/6/NC

L24

4

9 5

11

10

TDA7496L/NC

U9

INL

INR

STBY

SVR

BEAD/1206/NC

15

VS

GND

GND

GND

13

123

16

VS

OUTL

VAROUT_L

VOLUME

VAROUR_R

OUTRMUTE

GND

GND

GND

GND

192018

C90

0.1U/6/NC

AGND

17

6

7

1412

L23 BEAD/1206/NC

C93

VOL

C97

C91

330U/16V

330U/16V/NC

330U/16V/NC

SPKOUTL

SPKOUTR

R134 CX201209805/8/NC

R137 CX201209805/8/NC

SPEAKER OUT

AGND

JP2

1
2
3
4

4606-04-04P-R/NC

VCC12

AGND AGND

STBY

STBY

R140 10K/6/NC

2

R141 10K/6/NC

31

Q17

DTC143EUA/NC

AGND

55

ViewSonic Corporation Confidential - Do Not Copy VX912-3

AGND

ViewSonic Corporation

Model

Title

Date Rev:

AUDIO

GND

C2
1u/6

VCC12

GND

GND

R2

0/1206

C8

0.1u/6

GND

U2

R12

8

7

6

1K/6 1%

BOOST

IS

VCC

AIC1563

R11 3K/6 1%

C10 2200p/6

DC

DE

CF

GNDFB

R11:3K 1% ohm, R12:1K 1%
ohm -->output:5V;
R11:3.6K 1% ohm, R12:2.2K
1% ohm-->output 3.3V

5DVCC

3EC

12

RTD 3DVCC

ADC_ 3AVCC

RTD 3PVCC

LVDS_3AVCC

C12

0.1u/6

5DVCC

3AVCC1

3AVCC2

2.5DVCC

RTD 2.5DVCC

U10 U3 layout

與共

2004/4/16

3DVCC

3PVCC

2

C1

0.1u/6

2

+

EC1

200/6 1%

R3

R6

330/6 1%

R15

R17

10uF/16V

+

10uF/16V

EC3

+

200/6 1%

200/6 1%

3DVCC

0.1u/6

C3

2.5DVCC

10uF/16V

EC6

D1

1SS355

U1 AIC1117CY

3

VIN

10uF/16V

U3 AIC1117CY

3

+

10uF/16V

EC5

VIN

VOUT

GND

1

VOUT

GND

1

7681

1

GND

R4 47/6

R5 330K/6

120p/6

C9

GND

R7

240K/6 1%

1

R9
1K/6

D2

3 2

1SS355

Q2

MMST3906

Q1

NDS9410A/SO

GND

C7

1 3

0.1u/6

L2

47UH

D3

RB081L-20

12

EC4

330u/16V

234 5

+

EC2

2

3

45

CN1 CONN 4x2-R

1 2
3
5 6

4

8

C102

12V

L3

1U/6

FUSE1
0

1 2

12

10K/6

C4

0.1u/6

3DVCC

0/6

MMST3906

C11

C13

1U/8

3DVCC

R8

R10

10K/6

Q3

R14

0.1U/6

10K/6/NC

R18 4.7K/6

R1,L1

C5

0.1u/6

R13 1K/6

3DVCC

R16
1K/6

3

SN7002E

2

1

VCC12

C6

330u/16V

VRMT

RTD 3DVCC

ADC_ 3AVCC

RTD 3PVCC

LVDS_3AVCC

3DVCC

3AVCC1

3PVCC

3AVCC2

L29

FEB/1206/NC

U10

3 1

VIN VOUT

2

GND

AIC1739/NC

3.3V-->2.5V regulator for 3.3V system power, no 5V 2004/4/14

2.5DVCC

2.5DVCC

RTD 2.5DVCC

Modify

3DVCC

NC/CX201209805/8
L27

Q18

4.7K/6

R143

MMBT3906

MMBT3906

R144

4.7K/6

DSUB_5V

Q4

VBRI

D30

1N4148

3DVCC

D31

1N4148

Q19

CX201209805/8

L28

C100

0.1u/6

VCPU

C101
NC/6

ViewSonic Corporation

Model

GND

DGND

56

ViewSonic Corporation Confidential - Do Not Copy VX912-3

Title

POWER

Date Rev:

11. PCB Layout Diagrams

ViewSonic Corporation Confidential - Do Not Copy VX912-3

57

ViewSonic Corporation

Model

Title

Date Rev:

ViewSonic Corporation

Model

Title

Date Rev:

ViewSonic Corporation Confidential - Do Not Copy VX912-3

58

ViewSonic Corporation

Model

Title

Date Rev:

ViewSonic Corporation Confidential - Do Not Copy VX912-3

59

ViewSonic Corporation

Model

Title

Date Rev:

ViewSonic Corporation Confidential - Do Not Copy VX912-3

60

ViewSonic Corporation

Model

Title

Date Rev:

ViewSonic Corporation Confidential - Do Not Copy VX912-3

61

* Reader’s Response*

Dear Readers:

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

Assessment

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

Unit Excellent

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram and Exploded Parts List

9. Block Diagrams

10. Schematic Diagrams

11.PCB Layout Diagrams

B. Are you satisfied with this Service Manual?

Good Fair Bad

Item Excellent Good Fair Bad

1. Service Manual Content

2. Service Manual Layout

3. The form and listing

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

Reader’s basic dada:

Name:

Title:
Company:
Add:
Tel:

Fax:

E-mail:

After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile
1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes
([e-mail])

ViewSonic Corporation Confidential - Do Not Copy VX912-3

62