ViewSonic VS10931 Service Manual

Service Manual

ViewSonic VE920m-1

VE920mb-1

Model No. VS10931

19” Color TFT LCD Display

(VE920m-1_VE920mb-1_SM Rev. 1b Aug. 2006)

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

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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

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

Revision History

Revision SM Editing Date ECR Number Description of Changes Editor

1a 05/26/2006 Initial release J. Chang

1b Add RSPL BOM EPL for VE920mb-1 J. Chang

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8/28/2006

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TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 4

3. Front Panel Function Control Description 8

4. Circuit Description 13

5. Adjustment Procedure 14

6. Troubleshooting Flow Chart 49

7. Recommended Spare Parts List 57

8. Exploded Diagram and Exploded Parts List 61

9. Block Diagram 64

10. Schematic Diagrams 65

11. PCB Layout Diagrams 75

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1. Precautions and Safety Notices

1. Precautions and Safety Notices

1. Appropriate Operation

(1) Turn off the product before cleaning.

(2) Use only a dry soft cloth when cleaning the LCD panel surface.

(3) Use a soft cloth soaked with mild detergent to clean the display housing.

(4) Use only a high quality, safety approved AC/DC power cord.

(5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time.

(6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off.

(7) Do not touch the LCD panel surface with sharp or hard objects.

(8) Do not place heavy objects on the LCD display, video cable, or power cord.

(9) Do not use abrasive cleaners, waxes or solvents for your cleaning.

(10) Do not operate the product under the following conditions:

- Extremely hot, cold or humid environment.

- Areas containing excessive dust and dirt.

- Near any appliance generating a strong magnetic field.

- In direct sunlight.

2. 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 guidelines.

3. Safety Check

Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit, the voltage is

exposed in such areas as the associated transformer circuits.

4. LCD Module Handling Precautions

4.1 Handling Precautions

(1) Since front polarizer is easily damaged, pay attention not to scratch it.

(2) Be sure to turn off power supply when connecting or disconnecting input connector.

(3) Wipe off water drops immediately. Long contact with water may cause discoloration or spots.

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(4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.

(5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.

(6) Since CMOS LSI is used in this module, take care of static electricity and ensure human earth when handling.

(7) Do not open or modify the Module Assembly.

(8) Do not press the reflector sheet at the back of the module in any direction.

(9) In the event that a Module must be put back into the packing container slot after it was taken out of the

container, do not press the center of the CCFL Reflector edge. Instead, press at the far ends of the

CFL Reflector edge softly. Otherwise the TFT Module may be damaged.

(10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate or tilt the Interface

Connector of the TFT Module.

(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or

bend the TFT Module even momentarily. When designing the enclosure, it should be taken into consideration

that no bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module

may be damaged.

(12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local

ordinances or regulations for disposal.

(13) The LCD module contains a small amount of materials having no flammability grade. The LCD module

should be supplied with power that complies with the requirements of Limited Power Source

(IEC60950 or UL1950), or an exemption should be applied for.

(14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950

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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

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2. Specification

Introduction

FEATURES

Size 19”
Luminance (Typ, cd/㎡) 280 cd/㎡
Contrast Ratio (Typ) 450:1
Colors ( 6 bit + 2 bit FRC) 16.2 M colors
Response Time (Typ) 8 ms
Viewing Angle (H/V) 150 ° / 130 °

TFTLCD PANEL

Recommend resolution 1280x1024@60Hz
Analog (75ohms, 0.7/1.0 Vp-p) Yes

Input Signal

Digital Yes
Separate Sync Yes
Composite Sync No

Sync Compatibility

Sync on Green No
PC Yes
Power Mac Yes

Compatibility

TV Box (NextVision 6) Yes

Power Voltage AC 100-240V, 50/60Hz Yes

On Mode(Max / Typ) 58W

Power Consumption

Active Off Mode (Max) 2W

Audio 1.2 W (audio), 2W*2 (speaker) Yes

Tilt (20 ° to -5 °) Yes
Swivel No
Pivot No

Ergonomics

Height Adjust No

OSD Control

[X X] [ 1 ] [▼] [▲] [ 2 ] [ ]

Yes

Physical (W x H x D mm) 423 x 434 x 221 (mm)

16.7 x 17.1 x 8.7 (in)

Dimension

Package (W x H x D mm) 474 x 475 x 184 (mm)

17.6 x 18.7 x 7.2 (in)

Physical (Net kg/lb) 5.2 kg / 11.5 lb

Weight

Package (Gross Kg/lb) 6.8 kg / 15.0 lb
Temperature (℉/℃) 41℉-95℉/+5℃-+35℃

Operating Condition

Humidity (%) 20 % - 80 %
Temperature (℉/℃) -4℉-131℉/-20℃-55℃

Storage Condition

Humidity (%) 20 % - 85 %

Regulation

UL, cUL, FCC-B, CB, CE, NOM, TUV/GS, TUV ERGO (covers ISO13406-2 & MPRII),

TCO03, GOST-R + 20 ORIGINAL COPIES HYGIENIC, SASO, PCBC, VCCI, BSMI, CCC,

(PSB), (C-TICK), TUV - S, Green Mark, energy star
HYGIENIC, SASO, PCBC, VCCI, BSMI, CCC, (PSB), (C-TICK), TUV-S, Green Mark,

energy star

GENERAL specification

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

Contrast and Brightness Controls

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

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VIDEO INTERFACE

Analog Input Connector DB-15 (Analog), refer the appendix A
Digital Input Connector N/A
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 2B

Video Signals

1. Video RGB (Analog)

2. DVI (Digital)

Separate
Video Impedance 75 Ohms (Analog)
Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor
Sync Signals TTL
DDC 2B Compliant with Revision 1.3
Sync Compatibility Separate Sync

Video Compatibility

Shall be compatible with all PC type computers, Macintosh computers,

and after market video cards

Resolution Compatibility

640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x 624,

1024 x 768, 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.
Exclusions Not compatible with interlaced video

POWER SUPPLY

Power Supply (Adapter) Part Number: 27-D003115
Input Voltage Range

100 to 240 VAC

Input Frequency Range

50 to 60 Hertz

Short Circuit Protection

OUTPUT CAN BE SHORTED WITHOUT DAMAGE

Over Current Protection 3.3~4.5 A typical at 5 VDC
Leakage Current

3.5 MA (MAX) AT 254VAC / 60HZ

Efficiency 80 % TYPICAL AT 115 VAC FULL LOAD
Fuse

INTERNAL AND NOT USER REPLACEABLE

Power Dissipation

58 (Max) Watt

Max Input AC Current

1.8 A RMS @ 100 VAC,

Inrush Current (Cold Start) 120A(MAX) @ 240VAC , 50HZ

Power Supply Cold Start

SHALL START AND FUNCTION PROPERLY WHEN UNDER FULL LOAD,
WITH ALL COMBINATIONS OF INPUT VOLTAGE, INPUT FREQUENCY,
AND OPERATING TEMPERATURE

Power Supply Transient Immunity

SHALL BE ABLE TO WITHSTAND AN EN61000-4-4 ±2KV TRANSIENT

TEST WITH NO DAMAGE

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Power Supply Line Surge Immunity Shall be able to withstand ±2KV (L-L) and ±2.3KV (L-PE) with no damage

Power Supply Missing Cycle Immunity

Shall be able to function properly, without reset or visible screen artifacts, when
½ cycle of AC power is randomly missing at nominal input

Power Supply Acoustics

The power supply shall not produce audible noise that would be detectable by the
user. Audible shall defined to be in compliance with ISO 7779 (DIN
EN27779:1991) Noise measurements of machines acoustics. Power Switch noise
shall not be considered

US Type Power Cable

Separate 3-prong NEMA 5-15P type plug. Length = 1.8m. Connects to display.
Color = Black

European Type Power Cable

Schuko CEE7-7 type plug.
Length = 1.8m, Connects to display.
Color = Black

CCC Type Power Cable

Separate 3-prong type plug.
Length = 1.8m. Connects to display.
Color = Black

Power Saving Operation(Method) VESA DPMS Signaling

Power Consumption

ON Mode < 58 W (max)
ACTIVE OFF < 2 W

Recovery Time

ON Mode = N/A, ACTIVE OFF < 3 sec

2.5 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency

30 – 82 kHz

Vertical Refresh Rate

50 – 85* Hz.

Maximum Pixel Clock 135 MHz (EDID file is 140MHz)
Sync Polarity Independent of sync polarity.

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Timing Table

Item Timing Analog Digital

1 640 x 350 @ 70Hz, 31.5kHz Yes No
2 640 x 400 @ 60Hz, 31.5kHz Yes* No
3 640 x 400 @ 70Hz, 31.5kHz Yes No
4 640 x 480 @ 60Hz, 31.5kHz Yes No
5 640 x 480 @ 67Hz, 35.0kHz Yes No
6 640 x 480 @ 72Hz, 37.9kHz Yes No
7 640 x 480 @ 75Hz, 37.5kHz Yes No
8 640 x 480 @ 85Hz, 43.27kHz Yes No

9 720 x 400 @ 70Hz, 31.5kHz Yes No
10 800 x 600 @ 56Hz, 35.1kHz Yes No
11 800 x 600 @ 60Hz, 37.9kHz Yes No
12 800 x 600 @ 75Hz, 46.9kHz Yes No
13 800 x 600 @ 72Hz, 48.1kHz Yes No
14 800 x 600 @ 85Hz, 53.7kHz Yes No
15 832 x 624 @ 75Hz, 49.7kHz Yes No
16 1024 x 768 @ 60Hz, 48.4kHz Yes No
17 1024 x 768 @ 70Hz, 56.5kHz Yes No
18 1024 x 768 @ 72Hz, 58.1kHz Yes No
19 1024 x 768 @ 75Hz, 60.0kHz Yes No
20 1024 x 768 @ 85Hz, 68.67kHz Yes No
21 1152 x 870 @ 75Hz, 68.7kHz Yes No
22 1280 x 1024 @ 60Hz, 63.4kHz Yes No
23 1280 x 1024 @ 75Hz, 79.97kHz Yes No
24 1280x 720 @ 60Hz, 45kHz (HDTV) Yes No

Note 1:When Vertical frequency at 85Hz or resolution, the vertical image size might not be full screen. But the
vertical image position should be at the center.
Note2: *: The vertical image size might not be full screen.

Primary Presets

1280x1024 @ 60Hz

User Presets
Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration

Changing Modes

● Maximum Mode Change Blank Time for image stability : 3 seconds (Max), excluding “Auto Adjust” time

● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), there is no “Auto Adjust” feature.

● The monitor needs to do “Auto Adjust” the first time a new mode is detected but except the DOS mode 640 x 350, 720 x

400 & 640 x 400.(see section “0-Touch™ Function Actions”)

● While running Change Mode, Auto Adjust or Memory Recall, the image shall blank

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3. Front Panel Function Control Description

Front Panel Hardware Controls

Power Switch (Front Head) Power Control, soft Power Switch.
Power LED (Front Head) Green – ON

Orange – Active Off
Dark = Soft Power Switch OFF

Front Panel Controls (Head)

[XX] [ 1 ] [▲] [▼] [ 2 ] [ ]

[ ] Power
[ 1 ] BUTTON 1
[ 2 ] Button 2
[ ] UP ARROW BUTTON
[ ] DOWN ARROW BUTTON
[XX] Audio Mute on/off

Note: Power Button, Button 1 and Button 2 and Mute
Button must be one-shot logic operation. (i.e. there should
be no cycling)

Reaction Time OSD must fully appear within 0.5s after pushing Button 1

Short Cuts Function from the button(s)

[1]

Main Menu

[2]

Auto image adjust

[▼] or [▲]

To immediately activate Contrast menu. It should be change to Brightness
OSD by push button [2]

[▼] + [▲]

Recall both of Contrast and Brightness to default

[1] + [2]

Toggle 720x400 and 640x400 mode when input 720x400 or 640x400
mode

[1] + [▼] + [▲]

White Balance. (Not shown on user’s guide)

[1] + [▼]

Power Lock

[1] + [▲]

OSD Lock

[XX]

Audio Mute on /off

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

▲
▼

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Main Menu Controls

Auto Image Adjust*1
Contrast/Brightness*2*4
Audio Adjust

Volume*4, Mute*4

Color Adjust

sRGB, 9300K, 6500K(default), 5400, 5000, User Color [R, G, B]

Information
H Frequency, V Frequency, Resolution, Pixel Clock, Serial Number,

Model Number, “www.ViewSonic.com”

Manual Image Adjust
H. Size*1, H./V. Position*1, Fine Tune*1, Sharpness*3

Setup Menu

Language [English, French, German, Spanish, Italian, Finnish, Japanese, Traditional Chinese, Simplified

Chinese], Resolution Notice, OSD Position, OSD Timeout, OSD Background

Memory Recall

*1 These functions are not available in Digital Mode
*2 These functions are not available under sRGB Mode
*3 These functions are not available under Native Resolution Mode
*4 These functions setting can be recalled to default by [▼]+[▲]

[Remark] Please refer to the detail in the Appendix C

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Function descriptions
OSD Lock short cuts function for the buttons

The OSD lock will be activated by pressing the front panel control buttons "(1), & (▲)" for 10 seconds. If the user
then tries to access the OSD by pressing any of the buttons "1", "▼", "▲", "2" a message will appear on the screen
for 3 seconds showing "OSD Locked". The OSD lock will be deactivated by pressing the front panel control
buttons "(1), & (▲)" again for 10 seconds.
Note1: When the OSD is locked will lock all functions, including “Volume” and “Mute”
Note 2: Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD
Locked”
Note 3: OSD Lock should not lock Power Button and Power Lock function
Power Lock short cuts function for the buttons
The power button lock will be activated by pressing the front panel control buttons "(1), & (▼)" for 10 seconds.
Locking the power button means that the user won't be able to turn off the LCD while the power button is locked.
If the user presses the power button while it is locked, a message will appear on the screen for 3 seconds showing
"Power Button Locked". It also means that with the power button locked, the LCD would automatically turn back
"On" when power is restored after a power failure. If the power button is not in the locked mode, then power
should return to it's previous state when power is restored after a power failure. The power button lock will be
deactivated by pressing the front panel control buttons "(1), & (▼)" again for 10 seconds.

Note 1: Status bar indicating Power Button lock or unlock is in progress and when complete it will indicate
“Power Button Locked”
Note 2: Power should only be lockable in the “On State”

Memory Recall Actions

Memory Recall action on the analog and digital mode as below

1. Set the factory defaults as shown in Section 4-8

2. Clean all the mode setting buffer

3. Execute Auto Image Adjust

Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or Input Priority

Resolution Notice Actions

1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec

2. The OSD should disappear after 10 sec or by pushing button [1] or [2]
Resolution Notice function should be disabled when push button [2] under Resolution Notice OSD

0-Touch™ Function Actions

1. Execute Auto Image Adjust when new mode detected, and save the settings to buffer for further use

2. It should be reset by Memory Recall function
(Should not reset by power off, power unplug and others)
OSD Auto Save
The OSD shall save new settings when it is turned off by the user or when it times out. There shall not be a
separate save

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AUDIO INTERFACE (SPEAKER SPECIFICATION)

Line input connection

3.5 mm stereo jack

Line input signal 1.0Vrms@1kHz
Line input impedance 10k ohm
Maximum power output (Electric)

2W

Signal to Noise Ratio 72db
Frequency response F0 -20kHz (F0: Lowest resonant freq.)
Distortion <8% THD @1kHz

Vibration

There should be no audible vibration with volume at
100%. (Input signal within 1 Vrms)

Screen image

There should be no affect on the screen image stability
under any conditions

Connector PC99 requirement Audio in

Lime Green pantone # 577C

Cable type / length 3.5mm stereo cable / 1.8m length

Audio DPMS

NOTE: THERE IS NO GUARANTEE <1 W POWER
CONSUMPTION IN ACTIVE OFF MODE, WHEN THE
AUDIO CABLE IS CONNECTED

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3. OSD Table

Layer 1 Layer 2 Layer 3

Auto Image Adjust

Contrast (+ / -)

Contrast/Brightness

Brightness (+ / -)
Volume (+ / -)

Audio Adjust

Mute On/Off
sRGB
9300K
6500K
5400K
5000K

Red (+ / -)
Green (+ / -)

Color Adjust

User Color

Blue (+ / -)

Information

Horizontal Size + / -

H Position (+ / -)

H/V Position

V Position (+ / -)

Fine Tune + / -

Manual Image Adjust

Sharpness + / -

English
French
German
Spanish
Italian
Finnish
Japanese
Simplified Chinese

Language Select

Traditional Chinese
Resolution Notice On/Off
Input Priority On/Off

H Position (+ / -)
OSD Position

V Position (+ / -)
OSD Time Out 5/15/30/60

Setup Menu

OSD Background On/Off

Memory Recall

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4. Circuit Description

The TSUM57AK is total solution graphics processing IC for LCD monitors with panel resolutions up to SXGA. It is
configured with a high-speed integrated triple-ADC/PLL, a high quality display processing engine, and an integrated output
display interface that can support RSDS panel interface format. To further reduce system costs, the TSUM57AK also
integrates intelligent power management control capability for green-mode requirements and spread- spectrum support for
EMI management.

The TSUM57AK incorporates the world’s first coherent oversampled RGB graphics ADC in a monitor controller system. The
oversampling ADC samples the input RGB signals at a frequency that is much higher than the signal source pixel rate. This
can preserve details in the video signal that ordinarily would be lost due to input signal jitter or bandwidth limitations in
non-oversampled systems. The TSUM57AK also incorporates a new Dynamic Frame Rate (DFR) generator for the digital
output video to the display panel that preserves the advantages of a fixed output clock rate, while eliminating the output end of
frame short-line.

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5. Adjustment Procedure

A. Function Test and Alignment Procedure

1. All Modes Reset
You should do “All Model Reset” (Refer to Chap 3. Hot Keys for Function Controls) first. This action will allow
you to erase all end-user’s settings and restore the factory defaults.

2. Auto Image Adjust
The Auto Adjust is aimed to offer a best screen quality by built-in ASIC. For optimum screen quality, the user
has to adjust each function manually.

A.Turn the computer and LCD monitor on.
B. Press the ‘Auto’ button on monitor keypad to Auto Adjust.
C. The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive seconds, during

which time you will notice the image change.

3. Firmware
Test Patten: Burn in Model (Refer to Chap3. Hot Keys for Function Control)

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

4. DCC
Test Patten: EDID program

-Make sure it can pass test program.

5. Window Shut Down
Test Signal: 1280*1024@60Hz
Test Pattern:

Checkered Pattern Every One Pixel (50%Green & 50%Blue)
Inspection Item: Flicker, Mura

6. Window BG
Test Signal: 1280*1024@60Hz
Test Pattern:

Window standard pattern
Inspection Item: Line Defect, Function Defect & Mura

7. 25 Gray
Test Signal: 1280*1024@60Hz
Test Pattern:

Full Screen 25% White (Gray)
Inspection Item: Particle, Line Defect & Mura

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8. 50 Gray
Test Signal: 1280*1024@60Hz
Test Pattern:

Full Screen 50% White (Gray)
Inspection Item: Bright Dot, Particle, Line Defect & Mura

9. White Box
Test Signal: 1280*1024@60Hz
Test Pattern:

Window standard pattern
Inspection Item: Particle, Line Defect, Power, Image Remain & Mura

10. Black Box
Test Signal: 1280*1024@60Hz
Test Pattern:

Window standard pattern
Inspection Item: Bright Dot, Line Defect & Power

11. RED
Test Signal: 1280*1024@60Hz

Test Pattern:

Full Screen Red
Inspection Item: Bright Dot, Partial & Line Defect

12. Green
Test Signal: 1280*1024@60Hz

Test Pattern:

Full Screen Green
Inspection Item: Bright Dot, Partial & Line Defect

13. Blue
Test Signal: 1280*1024@60Hz

Test Pattern:

Full Screen Green
Inspection Item: Bright Dot, Partial & Line Defect

14. Gray_Scale_0-100_V64
Test Signal: 1280*1024@60Hz

Test Pattern:

Vertical 64 (256) Gray Scale (Right → Left，From 0 to 100% White)
Inspection Item: Line Defect & Function Defect

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15. Function Test Display pattern

Item

Pattern Description Remark

1

Gray_Scale_0-100_V

Vertical 64 (256) Gray Scale (右→左，From 0 to 100% White)

Figure 1

2

Gray_Scale_0-100_H

Horizontal 64 (256) Gray Scale (上→下，From 0 to 100% White)

Figure 2

3

Black Full Screen Black Figure 3

4

Red Full Screen 50% Red Figure 4

5

Green Full Screen 50% Green Figure 5

6

Blue Full Screen 50% Blue Figure6

7

White Full Screen White Figure7

8

Black_Tile Black Tile Under White Background Figure 8

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Figure 1 Figure 2

Figure 3 Figure 4

Figure 5 Figure 6

Figure 7 Figure 8

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BIOS update procedure

1. To setup ISP environment

Hardware:
PC or Notebook , Parallel(Printer) cable , ISP tool( Fig 1)

Software:
ISP driver .
If the O.S. was Win2000 or Win XP please have to install

PORT95NT.exe

Fig1

In order to ensure can execute ISP program, please set BIOS in PC or Notebook as Fig 2

Fig 2

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2. Install ISP

2.1 User could download ISP driver and PORT95NT install file from Myson Century
website( //www.myson.com.tw )

2.2 After extracting the zip file, the total files list as Fig 2.2, and double click the file of setup.exe

to install.

Fig 2.2

2.3 Press “Next” button to continue., see Fig 2.3

Fig 2.3

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2.4 Keep default setting or press “Change” button for selecting the path that you want , and then press“Next”button to

continue, see Fig 2.4.

2.5 Press “Install” button to continue, see Fig 2.5

Fig 2.5

Fig 2.4

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2.6 The Installer Information shows package warning, press “Ignore” button to continue, see Fig 2.6.

Fig 2.6

2.7 Installation has finished, press “Finish” button, see Fig 2.7.

Fig 2.7

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3. ISP security code

3.1 After installation, we could find the shortcut in the setting path or the program bar (default setting), see Fig 3.1.

Fig 3.1

2.2 Security file is a key to use ISP function, press “確定” button, see Fig 3.2.

Fig 3.2

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3.3 The warning is used to remind user of that different CPU rate may cause ISP function fail(it is limited by IIC protocol),

press “確定” button, see Fig 3.3.

Fig 3.3

2.4 Press“Create Security File” button to key in security code. Adjusting bar to decrease speed of IIC bus, see Fig 3.4.

Fig 3.4

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3.5 At least 2 Command No of security code, see Fig 3.5, and different security code between hardware ISP and software ISP.

The security code of software ISP is set by user while coding, but the security code of hardware ISP is set by Myson Century.

Fig 3.5

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3.6 Fig 3.6 shows the setting for security code of hardware ISP, it needs 4 Command No, and key in command sequentially

for 94, 94, AC, CA, 53.

Fig 3.6

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26

3.7 Fig 3.7 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 detail of setting, please
refer to Section 6 Boot code of ISP.

Fig 3.7

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27

4. Use ISP to program MCU

4.1 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 Fig 4.1.

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

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

message of Check MCU CRC OK means that the Host verify ok for the progress of program.

Fig 4.1

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28

5 Use ISP to read MCU content

5.1 Only software ISP could read the MCU content, it is according to program the boot code while coding. The limitation is
used for the security of customer’s code. Select “Read Target” item, and press“RUN” button, the MCU content
will show as Fig 5.1.

Fig 5.1

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29

5.2 If user uses hardware ISP to read MCU content, it shows as Fig 5.2.

Fig 5.2

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30

6 Re-entry the ISP Mode

When you could not select or click ‘Reset MCU’ button and enter ISP mode again, you refer the message as below:

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31

Note:
(1)Disable the ‘Enter ISP Mode’ option to avoid the error message display.

(2)If you using the MTV312M64 or before MCU serials, the MCU will always in ‘ISP Mode’even programming fail or

erase MCU that instead of select or press ‘Reset MCU’.

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32

7. Boot code of ISP

7.1 Hardware ISP
(1) Without boot code
(2) Fixed security code: 94, 94, AC, CA, 53
(3) Attention to the pin of HSCL (1) and HSDA (1) should keep in enable
(4) MTV412M, MTV512M, CS8954 support hardware ISP

7.2 Software ISP
(1) With boot code
(2) User define the security code
(3) Attention to the pin of HSCL (1) and HSDA (1) should keep in enable
(4) Only software ISP could read the MCU content

(5) MTV212M, MTV312M, MTV230M, MTV412M, MTV512M, CS8954 support software ISP

7.3 Boot code of software ISP
(1) Initialize MCU

(a) Define the I/O pin to HSCL (1) and HSDA (1)
(b) Define the slave B address
(c) Enable 8051 INT1 (ISR 2)

(2) Coding for INT1 while get into ISP mode

(a) Clear watchdog to prevent reset during ISP period
(b) Disable all interrupt to prevent CPU wake-up
(c) Write ISP slave address
(d) Write 93h to ISP enable address to enable ISP

(e) Enter 8051 idle mode

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33

7.4 The followings show the relationship between the code and the security code.

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34

8. ISP Adaptor Schematic

9. Adatptor Linking

The Monitor Set

Connect with
Printer Cable
25Pins to 25Pins

PC/HOST

Connect with
VGA Cable
15Pins to 15Pins

ISP Adaptor

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35

Packing Procedure

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

1.2 Put the monitor in the PE bag and seal the bag with tape. (Figure 2)

Figure 1 Figure 2

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

1.4 Place the monitor into the carton and then put all the accessories into the carton. As

last, close the carton and seal it with tape. (Figure 4)

Figure 3 Figure 4

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Monitor Assembly and Disassembly

5.1 Separate Stand Assy

5.1.1 Remove Seat Assy

5.1.2 Separate Stand Assy

Step 1 :

Press Stand Assy’s bottom part in
Seat Hinge

Step 2:

Remove Seat Assy

Step 1 :

Loose and Remove 2 screws

Step 2 :

Remove Stand Assy

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36

5.2 Separate Rear Cover (Rear Case Assy)

Separate Bezel hooks to take Bezel and Rear Cover apart.

Step 2 :

Loose and Remove 2 screws

Step 5 :

Completed

Step 1 :

Remove Cover Hinge

Step 3 :

Separate Bezel hooks to take
Bezel and Rear Cover apart.

Step 4 :

Remove Rear Cover

37

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5.3 Remove Power Board

5.3.1 Remove FFC

5.3.3 Remove Metal Cover

5.3.2 Lift up LCD module and

remove Bezel

Step 1 :

Loose and remove 4 screws

38

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Step 5 :

Remove 2 pieces of Backlight wires.

Step 2 :

Loose and remove 2 screws

Step 3 :

Loose and remove 2 screws

Step 4 :

Remove the tape

39

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Step 6 :

Remove the PCBA Cover

5.3.4 Remove Power PCBA

Step 1 :

Remove 2 pieces of Backlight wires.

Step 2 :

Loose and remove 4 screws

Step 3 :
Remove Power PCBA

40

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5.4 Change New Power Board

5.5 Remove AD PCBA

5.5.1 Remove FFC

Step 1 :

Remove 2 FFCs

Step 1 :

Insert New Power PCBA

Step 2 :

Fasten 2 fixed screws of Power PCBA

Step 3 :

Insert 2 pieces of Backlight wires.

41

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Step 5 :

Completed

Step 3 :

Loose and remove 4 screws

Step 4 :

Remove AD PCBA

42

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

5.6 Change New AD PCBA

Step 1 :

Insert New AD PCBA

Step 4 :

Insert 2 FFC
Completed

Step 2 :

Fasten 4 screws

Step 3 :

Insert FFC

43

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

5.7 Metal Cover Assembly

Step 1 :

Place the PCBA Cover

Step 2 :

Insert 2 pieces of Backlight wires.

Step 3 :

Join the tape

Step 4 :

Fasten 2 screws

44

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Step 7 :

Place LCD module to LCD Bezel.

Step 5 :

Fasten 2 screws

Step 6 :

Fasten 2 screws

Step 8 :

Insert FFC

45

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

5.8 Remove OSD PCBA

Step 3:

Completed

Step 1:
Separate both Audio
Cable

Step 2 :

Take OSD PCBA apart

46

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

5.9 Change New OSD PCBA

5.10 Rear Cover Assy Assembly

Step 1 :

Place Rear Cover

Step 1 :

Place New OSD PCBA

Step 2 :

Insert Audio Cable to connectors
of OSD PCBA

Step 3:
Completed

47

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

5.11 Stand Assy Assembly

Step 2 :

Fasten 2 screws

Step 3 :

Remove Cover Hinge

Step 1:

Place Seat Assy

Step 2 :

Fasten 4 screws

Step 3:

Join Seat Assy

48

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49

6. Troubleshooting Flow Chart

Defect Mode Failure Analysis Repair Testing

Flash Dots

Bright Dot

Dark Dot

Backlight

Light Leakage

Mura

Image Sticking

Brightness spot

Particle

Dot Defect

Check Panel

Light On Test

Next Step

※ “ Panel Change” Should be Performed to Level 3 Repair

stage

Abnormal

Display

TEST

NG

A

Completed

Image Remain

Group Bright
Dots

Others Cosmetics
Defect

Panel Change

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Defect Mode Failure Analysis Repair Testing

Check PCBA

Power on
Display
Abnormal

Flicker

Next Step

TEST

NG

A

Completed

AD/B Change

CNT/B Change

Inverter/B Change

Power/B Change

Check Panel

Display Noise

Beat Display
Shut Down
Abnormal

Beat Display
Flicker

No Backlight

Display Wave

B

Panel Change

Adapter Change

Check Adapter

※ “ Panel Change” Should be Performed to Level 3 Repair

stage

Check PCBA

AD/B Change

Power/B Change

CNT/B Change

Check Panel

Panel Change

50

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Failure Analysis Repair Testing

Gray Scale
Display

A

bnormal

R.G.B
Display
Abnormal

No signal

Display White

Out

Brightness
Even
Abnormal

Next Step

TEST

NG

Completed

B

Booting Delay

C

Beat Display
No Backlight

Check PCBA

AD/B Change

Inverter/B Change

Power/B Change

Check P

anel

Check P

CBA

Panel Change

Power/B Change

Inverter/B Change

CNT/B Change

AD/B Change

Check PCBA

VGA cable

DVI cable

Check Wire

Check P

anel

Panel Change

OSD/B Change

Check PCBA

Adapter Change

Check Adapter

※ “ Panel Change” Should be Performed to Level 3 Repair

51

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Defect Mode Failure Analysis Repair Testing

Horizontal
Line Defect

Vertical
Weak Line

Peculiar Smell

Check PCB

Check PCBA

Check Panel

Horizontal
Weak Line

Next Step

TEST

NG

AD/B Change

Panel Change

Horizontal
Band Defect

C

Vertical
Band Defect

Power Saving
Display
Abnormal

Check PCB

Check PCBA

AD/B Change

Inverter/B Change

Power/B Change

Check PCB

Check PCBA

AD/B Change

※ “ Panel Change” Should be Performed to Level 3 Repair

stage

Complete

52

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Defect Mode Failure Analysis Repair Testing

LED Off

No Power

LED Dark

LED Abnormal

LED Flicker

Power ON/OFF

Abnormal

LED Display

Abnormal

Check PCBA

Check Wire

AD/B Change

CNT/B Change

OSD Cable

Inverter/B

Power/B Change

OSD/B Change

AC Power Change

DC Power CNT

Cable Change

Adapter Change

Check Adapter

Check PCBA

Check Wire

OSD Cable

Inverter/B

Power/B Change

OSD/B Change

DC Power CNT

Cable

Change

Adapter Change

AD/B Change

LED Loss

Turn Off
Abnormal

Check PCBA

Check Wire

Next Step

TEST

NG

Completed

※ “ Panel Change” Should be Performed to Level 3 Repair

53

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Defect Mode Failure Analysis Repair Testing

Abnormal BIOS

&OSD

Check PCB

Check Wire

AD/B Change

CNT/B Change

OSD cable

OSD No
Display

OSD Key
Unavailable

OSD Can’t
Input

OSD Can’t
Read

OSD Jiggle

OSD Display
Abnormal

Check BIOS

Inverter/B

Power/B Change

OSD/B Change

D-sub cable

VGA cable
DVI cable

BIOS Update

Abnormal

Loudspeaker

Check PCBA

Check Wire

AD/B Change
CNT/B Change

No Voice

Voice Loss

Abnormal
Loud

L/R
Abnormal

L/R Same
Volume

Check Loudspeaker

Inverter/B Change

Power/B Change

OSD/B Change

OSD Cable Change

Loudspeaker
Change

Loudspeaker
Noise

※ “ Panel Change” Should be Performed to Level 3 Repair

stage

Completed

Next Step

TEST

NG

54

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Defect Mode Failure Analysis Repair Testing

Display Shut
Down

Check PCBA

Check Panel

Display Flicker
((tapping )

Check PCBA

Check Panel

AD/B Change

AD/B Change

Power/B Change

Panel Change

CNT/B Change

CNT/B Change

Other Abnormal

Display

Next

Step

TEST

NG

Complete

TV Function
Display
Abnormal

※ “ Panel Change” Should be Performed to Level 3 Repair

Panel Change

Check PCBA

Check Wire

TV /B Change

AV Cable Change

Remote controller
Change

Check Controller

DVI Signal
Display
Abnormal

Check PCB

AD/B Change

EDID Update

55

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Trouble Shooting Analysis

Check the information in this section to see if the problems can be solved before requesting repair.

Note：The consumers are only allowed to solve the problems described as below. Any unauthorized
product modification, or failure to follow instructions supplied with the product will end the

warranty immediately.

l No image

u Make sure power button is ON.
u Check whether the LCD monitor and computer power cords are plugged and whether there is a

supply of power.

l No Signal Input

u Check the signal connection between the computer and LCD monitor.

l “Out of Range”

u Check the computer image output resolution and frequency and compare the value with the preset

values (Please refer to [Appendix-Display Mode]).

l Fuzzy Image

u Adjust Phase.

l Image too bright

u Adjust brightness and contrast by OSD.

l Image too dark

u Adjust brightness and contrast by OSD.

l Irregular image

u Check the signal connection between the computer and LCD monitor.
u Perform Auto Adjust.

l Distorted image

u Reset the LCD monitor
u Take off extra accessories (such as signal extension cord).

l Image is not centered

u Use OSD Image Menu to adjust H_Position and V_Position.
u Check image size setting.
u Perform Auto Adjust.

l Size is not appropriate

u Use OSD Image Menu to adjust H_Position and V_Position.
u Check image size setting.
u Perform Auto Adjust.

l Uneven color

u Use OSD Color Menu to adjust color setting.

l Color too dark

u Use OSD Color Menu to adjust color setting.

l Dark area distorted

u Use OSD Color Menu to adjust color setting.

l White color is not white

u Use OSD Color Menu to adjust color setting.

56

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57

7. Recommended Spare Parts List

Rev: 1a

Serial No. Prefix: Q7T

Item ECR/ECN

ViewSonic P/N Ref. P/N

Location Universal number# Q'ty

1 Lips Without Audio, DAC-19M001 BF, Ver:00 A, 19 V/2.5

A, 5 V/3 A, 4L, 4.9 mA, 2380

V

A-00004021 27-D003115 1

2 Power Cord, UL, SVT#18/3C, 75℃, LP-30B+LS-13,

L=1830+/-50mm, Black, Linetek, 18AWG, No Ba

g

A-00005946

32E1818015

(

AJ0E3T5A2M

)

1

3 Power Cord, CCC, 300/500V, 0.75mm2, 3C, PC-323+COC-

01, L=1830+/-50mm, Black, Linetek, 18AWG, No Bag

A-00005947

32E1818013

(AJ0E3T5C2M)

1

4 Power Cord, CEE, SP-023+IS-14, H05VV-F, 3G, 0.75mm2,

CT-12, L=1800+/-50mm, I-SHENG, 18AWG, Black, No
Ba

g

A-00005948

32E1818018

(AJ0E3T5E2M/K2M)

1

5 Power Cord, BSI, H05VV-F, 0.75mm2, 3C, LP-60L+LS-60,

L=1830+/-50mm, Black, 18AWG, PSB Mark, Linetek, No
Ba

g

A-00005949

32E1818060

(AJ0E3T5K2M)

1

6 Power Cord, VCTF 3G 0.75mm^2 CNS CT-08, Black,

BSMI, 1800 mm, I Shen

g

A-00005950

32-D001922

(

AJ0E3T5W2M

)

1

7 PCBA for , A190E3, A190E3-T-K, 303-02, Rev.31

B-00004023 35-D002998 1

8 Main Board , A190E3, A190E3-T-S1, 303-11, Rev.0

7

B-00005942 35-D003765 1

9 Cover Hinge, A190E3-H0F, ABS PA-757N, BLACK

C J91A11B5, In

j

ex

C-00004026 40-D003812 1

10 Seat Ass

y

, A170E1-H0P, ASSY, Black, Cherng Jyie

h

C-00005847 40-D008680 1

11 Front Panel, A190E3-H0M, ASSY, Silver, Injex_Plastic,

Analo

g

C-00005943 40-D008790 1

12 Back Cover, A190E3-H0M, ASSY, Black, In

jex_

Plasti

c

C-00005944 40-D008678 1

13 Cover A190E3-H0M, ASSY, Blac

k

C-00005945 40-D008677 1

14 Audio Cable, A150X2, 18AWG, 180cm, Black, JCE

CB-00000544 32F2818004 1

15 FFC_X, 0.50x45x62xCx(5/5)x(0.175x0.3), 45 Pins, no AL

foi

l

CB-00004034 32-D000557 2

16 FFC-OSD, 22 Pins, TennRic

h

CB-00004035 32-D003899 1

17 Monitor Cable, A150X2, 30AWG, 180cm, Black, JCE

CB-00004287 32F3018003 1

18 Safety Label for , A190E3-H0M, 120 mmx50 mm, Chang

Huan

g

, VSC VE920m-1, Green I

I

DC-00005951 77-D009065 1

19 User Guide for A190E3-H0M, Complex, 1C, Yi Ching,

VSC VE920m-1+Caution Card, Green I

I

DC-00005953 76-D009060 1

20 CD-ROM for A190E3-H0M, Complex, 1C, Yi Ching,

VSC VE920m-1Green I

I

DC-00005954 76-D009062 1

21 Carton Label for , A190E3-H0M, 76.2 mmx76.2 mm, Chang

Huan

g

, VSC VE920m-1, Green I

I

DC-00005957 77-D009064 1

22 Screw, M3*P0.5*4,

φ

5.5*

2

HW-00000553 42A9930008 2000

23 Screw, M3*P1.27*12,

φ

5.5*

2

HW-00000556 42A9990005 2000

24 SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips

Cross Recess, plate Ni, Screw_with_Washer, SHYE CHING
SCREW

,

head D8

HW-00004042 42-D000649 2000

25 SCREW, M4, P=0.7 mm, L=15 mm, Round Head, Phillips

Cross Recess, Zn(Black), Screw_with_Washer, Hama Naka
Moto

g

awa/Shye Chin

g

HW-00005884 42-D001756 2000

26 Stand-Off 4 #-40*11.8

M-00000559 42A9940007 2000

27 Ta

p

e, Security Tape, OPP, L900xW50x0.045mm, VS

C

M-00000560 7345511002 1

28 PE Foam Bag, Protector, 570*600*0.13, A190E1-H01, white

P-00000595 7841919921 1

29 Generic Foam Se

t

P-00001347 30833

30 Generic Box

P-00002515 20653

31 Craft Box , A190E3-H0M, paper, printing, 474 mmx184

mmx475 mm, Chen Ti Pa

p

er, VSC VE920m-1, Green I

I

P-00005952 78-D009063 1

32 Craft Foam, A190E3-H0M, EPS, White, 460 mmx175

mmx210 mm, Telun

g

, PS Foam(Left), Green I

I

P-00005955 78-D008901 1

33 Craft Foam, A190E3-H0M, EPS, White, 460 mmx175

mmx210 mm, Telun

g

, PS Foam(Right), Green I

I

P-00005956 78-D008902 1

34

Plastics:

Panel Protector Film, A190E2-H06, mylar, 400X325X0.1
MM

PL-00005958 73-D001222 1

Remark 1:

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

Remark 2:

RECOMMENDED SPARE PARTS LIST (VE920m-1)

Description

ViewSonic Model Number:VS10931

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.

Packing Material:

Miscellaneous:

Hardware:

Accessories:

Documentation

Cables:

Cabinets:

PC Board Assembly:

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Rev:1a
Serial No. Prefix: QEJ

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

1 Accessories:

Power Cord

A-00002058

32E1818013 1

2

Control Board ,Rev.31 B-00004023 35-D002998 1

3

Power Supply Board Ver:00

B-00005940

27-D003115 1

4

Main Board,Rev.07 B-00005942 35-D003765 1

5

Cover Hinge C-00004026 40-D003812 1

6

Seat Assy C-00005847 40-D008680 1

7

Back Cover C-00005944 40-D008678 1

8

Cover-Stand Assy C-00005945 40-D008677 1

9

Front Panel (Bezel) C-00008027 40-D012371 1

10

Audio Cable,180cm

CB-00000544

32F2818004 1

11

Flat Cable (FFC_X, 0.50x45x62xCx(5/5)x(0.175x0.3) CB-00004034 32-D000557 2

12

Flat Cable (FFC-OSD,22) CB-00004035 32-D003899 1

13

Monitor Cable,180cm

CB-00004287

32F3018003 1

14

Safety Label DC-00008031 77-D012469 1

15

Carton Label DC-00008032 77-D012470 1

16

User's Guide DC-00008033 76-D009873 1

17

Screw,M3*P0.5*4,φ5.5*2

HW-00000553

42A9930008 2000

18

Screw,M3*P1.27*12,φ5.5*2 HW-00000556 42A9990005 2000

19

SCREW,M4,P=0.7 mm,L=8 mm HW-00004042 42-D000649 2000

20

SCREW,M4,P=0.7 mm,L=15 mm HW-00005884 42-D001756 2000

21

SCREW,4,P=0 mm,L=11.8 mm

HW-00006041

42A9940007 2000

22 Miscellaneous:

Tape,Security Tape,OPP,L900xW50x0.045mm M-00000560 7345511002 1

23

PE Foam Bag P-00000595 7841919921 1
24 Generic Foam Set P-00001347 30833
25 GenericCarton P-00002515 20653
26

Craft Foam(Left) P-00005955 78-D008901 1
27

Craft Foam(Right) P-00005956 78-D008902 1
28

Craft Box P-00008021 78-D012473 1
29 Plastics:

Panel Protector Film

PL-00005958

73-D001222 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.

Cables:

Documentation:

Hardware:

Packing Material:

RECOMMENDED SPARE PARTS LIST (VE920mb-1

)

Description

PC Board Assembly:

Cabinets:

ViewSonic Model Number: VS10931

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

58

Rev: 1a

Serial No. Prefix: Q7T

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

1 N/A MJ0E501K01 19" Semi Product,19E5-L01,Default 1
2 N/A L3J005XXXX 19" Cr TN (Panel Base) Common L4J005XXXX 1
3 N/A 73-C000047 ACF,COG,AC-8405Z-23 1.5mmX100M,100000 mmx1.5 mm,COG-ACF,Green I Common 7344191016 0.00318

4

N/A 36-D001339 Driver IC,Scan,A170E1,HX8633CPD400,256Channel,Green I Common

36X8633401, 36­D001185

4

5 N/A 7344191017 ACF,AC-4251FY-16,100M/RL,Green I Common 0.00398
6 N/A 36X8002971 Driver IC,COF,Data,HX8002CB97,COF,M190E5-L01,384Channel,Green I Common 10
7 N/A 35-D002646 PCBA for ,A190E3-H,A190E3-H-X,301-03,Rev.03,ODM,Green II Common 35-D000669 1

8

N/A 73-D002676 ACF,PCB,AC-9825R-35,100000 mmx1.5 mm,PCB-ACF,Green I Common 7344191004 7344100000 0.00398

9 N/A 7349951002 Silicone,TORAY/-9187L,330g Common 0.4
10 N/A PJ0EFT0Q06 Olympic,19"W,Function BOM,D-sub+Audio,TSU17AK+8002F 1
11 HW-00005679 42A9930008 SCREW,3,P=0.5 mm,L=4 mm,Pan Head,Green I Common 15
12 M-00000559 42A9940007 SCREW,4,P=0 mm,L=11.8 mm,Hexagon Stand Off,Socket,Green I Common 2

13

HW-00004042 42-D000649

SCREW,M4,P=0.7 mm,L=8 mm,Round Head,Phillips Cross Recess,plate color
Zn,Screw_with_Washer,Shye Ching/Hama Naka Motogawa,head D8,Green I

Common 2

14

N/A 27-D003115

Lips Without Audio,DAC-19M001 BF,Ver:01 A,19 V/2.5 A,5 V/3 A,4L,4.9 mA,2380
V,RoHS

Common 1

15 B-00005942 35-D003765 PCBA for ,A190E3,A190E3-T-S1,303-11,Rev.07,ODM,Green I Common 1
16 N/A 41-D004053 Metal Frame Front Assy,A190E3,ASSY,SECC t0.6+mylar,Green I Common 1
17 CB-00004034 32-D000557 FFC,0.50x45x62xCx(5/5)x(0.175x0.3),45 Pins,no AL foil,Green I Common 2
18 N/A 41-D002610 Cover AD Assy,A190E3,secc,cover_ad+mylar,D_SUB/AUDIO,Green I Common 1
19 N/A 44-D003904 Backlight Unit,A190E3,CLT BL,HAT,Green I Common 1
20 N/A 73-D004702 Isolated Tape,PET,147 mmx137 mmx0.1 mm,Green I Common 1

21

N/A

PJ0EAAS000(A2M)
PJ0EACS000(C2M)
PJ0EAET000(E2M)
PJ0EAKU000(K2M)
PJ0EAW5000(W2M)

Olympic,19",Accessory BOM,D-sub+Audio,USA 3 pin,Black,Power built-in;RoHS
Olympic,19",Accessory BOM,D-sub+Audio,China 3 pin,Black,Power built-in;RoHS
Olympic,19",Accessory BOM,D-sub+Audio,European / Korea 2 pin,Black,Power built­in;RoHS
Olympic,19",Accessory BOM,D-sub+Audio,None,Black,Two power cords of UK & EU
for VSC,Power built-in;RoHS
Olympic,19",Accessory BOM,D-sub+Audio,Taiwan 3 pin,Black,Power built-in;RoHS

1

22 N/A 32F2818004 Audio Cable,A150X2,18AWG,180cm,Black,JCE,Green I Common 32F2818011 1
23 CB-00004287 32F3018003 Accessory Cable,D-Sub,BLACK,A150X2,Green I Common 32-D002132 1

24

A-00000458 32E1818015

Power Code,UL,SVT#18/3C,LP-30B+LS-13,L=1830+/-50mm,Black,Linetek,18AWG,No
Bag,Green I

A2M 32E1818019 1

25

A-00002058 32E1818013

Power Cord,CCC,300/500V,0.75mm2,3C,PC-323+COC-01,L=1830+/­50mm,Black,Linetek,18AWG,No Bag,Green I

C2M 32E1818021

26 A-00002059 32E1818018 Power Cord,SP-023+IS-14,Black,CEE,1800 mm,Green I E2M,K2M 32E1818016 1

27

A-00002057 32E1818060

Power Cord,BSI,H05VV-F,0.75mm2,3C,LP-60L+LS-60,L=1830+/­50mm,Black,18AWG,PSB Mark,Linetek,No Bag,Green I

K2M 32E1818020 1

28 A-00004047 32-D001922 Power Cord,VCTF 3G 0.75mm^2 CNS CT-08,Black,BSMI,1800 mm,GreenII W2M 32-D002330 1

29

N/A

PJ0EI2M000(A2M)
PJ0EI2M002(C2M)
PJ0EI2M001(E2M)
PJ0EI2M003(K2M)
PJ0EI2M004(W2M)

Olympic,19",ID BOM,D-sub+Audio,USA,Silver Black,VSC,
Olympic,19",ID BOM,D-sub+Audio,China,Silver Black,VSC,
Olympic,19",ID BOM,D-sub+Audio,European,Silver Black,VSC,
Olympic,19",ID BOM,D-sub+Audio,UK,Silver Black,VSC,
Olympic,19",ID BOM,D-sub+Audio,TWN,Silver Black,VSC,

1

30 HW-00000556 42A9990005 Screw,M3*P1.27*12,φ5.5*2,Steel,Green I Common 2

31

HW-00005884 42-D001756

SCREW,M4,P=0.7 mm,L=15 mm,Round Head,Phillips Cross
Recess,Zn(Black),Screw_with_Washer,Green I

Common 4

32 B-00004023 35-D002998 PCBA for ,A190E3,A190E3-T-K,303-02,Rev.31,ODM,Green II Common 1
33 C-00004026 40-D003812 Cover Hinge,A190E3-H0F,ABS PA-757N,BLACK C_J91A11B5,Green II Common 1
34 CB-00004035 32-D003899 FFC,22 Pins Common 1
35 N/A 73-D004605 Isolated Tape,PET,384 mmx48 mmx0.05 mm,Green I Common 1
36 C-00005944 40-D008678 Rear Assy,A190E3-H0M,ASSY,Black,Green II Common 1
37 C-00005943 40-D008790 Bezel Assy,A190E3-H0M,ASSY,Silver,Analog,Green II Common 1
38 C-00005945 40-D008677 Stand Assy,A190E3-H0M,ASSY,Black,Green II Common 1
39 MULTIPLE MATCH 73-D001222 Panel Protector Film,A190E2-H06,mylar,400X325X0.1 MM,Green I Common 1
40 DC-00005951 77-D009065 Safety Label for ,A190E3-H0M,120 mmx50 mm,VSC_VE920m-1,Green II Common 1
41 N/A 77-D009061 SN Label for ,A190E3-H0M,VSC_VE920m-1,Green II A2M,E2M,K2M,W2M 1
42 N/A 77-D009059 SN Label for ,A190E3-H0M,50 mmx25 mm,VSC_VE920m-1 for China,Green II C2M 1
43 HW-00002076 7841595111 Corner Protector,paper,50 mmx50 mmx1850 mm,Green I Common 0.0083
44 M-00000592 7841995111 Separator, A190E1-H01,1130 mmx955 mmx11 mm,Default,Non Green Common 0.021
45 P-00000595 7841919921 Bag,570 mmx600 mmx0.13 mm,White,Non Green Common 1
46 DC-00000586 7741999141 Label,Pallet Barcode Label,75x40,A190E2-H03,VSC,Non Green Common 0.021
47 N/A 7345511002 Tape,Security Tape,OPP,L900xW50x0.045mm,VSC,Non Green Common 0.085
48 N/A 77-D000114 Customer Label,A170E1-H0G,180 mm,100 mm,Green I C2M 1
49 N/A 77-D000118 Customer Label,A170E1-H0G,130 mm,80 mm,Green I C2M 1
50 N/A 78-D000275 Warranty Card,A170E1-H0G,143 mmx210 mm,VSC_VA712,Green I C2M 1

51

N/A 77-D001323 Customer Label for ,A170E1-H0G,15 mmx15 mm,QC Pass Label_VSC_for China,Green I C2M 1

52 N/A 78-D001494 Pallet,A190E1-H01,Wooden,150 mmx970 mmx135 mm,Green I Common 0.021
53 N/A 73-D005094 Tape,20 mmx20 mmx0.1 mm,PET,Green I Common 1
54 C-00005847 40-D008680 Seat Assy,A170E1-H0P,ASSY,Black,Green II Common 1

55

P-00005955 78-D008901 Cushion,A190E3-H0M,EPS,White,460 mmx175 mmx210 mm,PS_Foam(Left),Green II Common 1

56

P-00005956 78-D008902 Cushion,A190E3-H0M,EPS,White,460 mmx175 mmx210 mm,PS_Foam(Right),Green II Common 1

57 N/A 79-D009027 Shipping Package Information for ,A190E3-H0M,Viewsonic Common 1
58 DC-00005953 76-D009060 MENU for A190E3-H0M,Complex,1C,VSC_VE920m-1+Caution Card,Green II A2M 1
59 N/A 76-D009062 MENU for A190E3-H0M,Complex,1C,VSC_VE920m-1 include CD-ROM,Green II C2M,E2M,K2M,W2M 1
60 DC-00005957 77-D009064 Carton Label for ,A190E3-H0M,76.2 mmx76.2 mm,VSC_VE920m-1,Green II Common 1
61

P-00005952 78-D009063 Carton,A190E3-H0M,474 mmx184 mmx475 mm,VSC_VE920m-1,Green II Common 1

ViewSonic Model Number: VS10931

BOM LIST (VE920m-1)

59

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

ViewSonic Model Number : VS10931
Rev.:1a
Serial No. Prefix: QEJ

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

1 N/A

MJ0E501K01

19" Semi Product,19E5-L01,Default 1

2 N/A

7349951002

Silicone 0.4

3 N/A

7344191017

ACF,AC-4251FY-16,100M/RL,Green I 0.004

4 N/A

36X8002971

Driver IC,COF,Data,COF,M190E5-L01,Green I 10

5 N/A

L3J005XXXX

19" Cr TN 8ms (Panel Base) 1

6 N/A

36-D001339

Driver IC,Scan,A170E1,Green II 4

7 N/A

73-C000047

ACF,COG,AC-8405Z-23 1.5mmX100M,100000 mmx1.5 mm,COG-ACF,Green I 0.003

8 N/A

35-D002646

PCBA for ,A190E3-H,A190E3-H-X,301-03,Rev.03,ODM,Green II 1

9 N/A

73-D002676

ACF,PCB,AC-9825R-35,100000 mmx1.5 mm,PCB-ACF,Green I 0.004

10 N/A

PJ0EACS000

Olympic,19”,Accessory BOM,D-sub+Audio, 3 pin,Black,Power built-in;RoHS 1

11 A-00002058

32E1818013

Power Cord,PC-323+COC-01,Black,CCC,1830 mm,Green I 1

12 CB-00000544

32F2818004

Accessory Cable,Audio,NONE,Black,Pins-Pins,Green I 1

13 CB-00004287

32F3018003

Accessory Cable,D-Sub,BLACK,A150X2,Green I 1

14 N/A

PJ0EFT0Q06

Olympic,19"W,Function BOM,D-sub+Audio 1

15 HW-00000553

42A9930008

SCREW,3,P=0.5 mm,L=4 mm,Pan Head,Green I 15

16 HW-00006041

42A9940007

SCREW,4,P=0 mm,L=11.8 mm,Hexagon Stand Off,Socket,Green I 2

17 CB-00004034

32-D000557

FFC,0.50x45x62xCx(5/5)x(0.175x0.3),45 Pins,Green I 2

18 HW-00004042

42-D000649

SCREW,M4,P=0.7 mm,L=8 mm,Round Head,Green I 1

19 N/A

41-D002610

Cover AD Assy,A190E3,cover_ad+mylar,D_SUB/AUDIO,Green I 1

20 B-00005940

27-D003115

Lips Without Audio,DAC-19M001 BF,Ver:01 A,19 V/2.5 A,5 V/3 A,4L,4.9 mA,2380 V,RoHS 1

21 B-00005942

35-D003765

PCBA for ,A190E3,A190E3-T-S1,303-11,Rev.07,ODM,Green II 1

22 N/A

44-D003904

Backlight Unit,A190E3,Green I 1

23 N/A

41-D004053

Metal Frame Front Assy,A190E3,ASSY,SECC t0.6+mylar,Green I 1

24 N/A

10-D009090

Software (EDID_D-SUB),A190E3,Checksum(83),19 Analog Port,Green II 1

25 N/A

10-D010801

Software (BIOS),A190E3,19E3TSA004,Checksum(0x7BC5),MTV312 Analog+Audio,Green II 1

26 N/A

PJ0EI1M300

Olympic,19",ID BOM,D-sub+Audio,Black,Height adjustable model 1

27 P-00000595

7841919921

Bag,570 mmx600 mmx0.13 mm,Green I 1

28 M-00000560

7345511002

Tape,A170E1-H0P,900 mmx50 mmx0 mm 0.058

29 PL-00005958

73-D001222

Panel Protector Film,A190E2-H06,mylar,400X325X0.1 MM,Green I 1

30 HW-00005884

42-D001756

SCREW,M4,P=0.7 mm,L=15 mm,Round Head,Green I 4

31 N/A

78-D002030

Corner Protector,5mm,A170E1-H0M,50 mmx50 mmx1850 mm,Green I 0.083

32 N/A

77-D002070

SN Label for ,A170E1-H0M,75 mmx40 mm,Pallet Bar Code Label, A170E1-H0M,Green I 0.021

33 N/A

42-D002091

SCREW,M3,P=1.27 mm,L=12 mm,Pan Head,Green I 2

34 B-00004023

35-D002998

PCBA for ,A190E3,A190E3-T-K,303-02,Rev.31,Green II 1

35 C-00004026

40-D003812

Cover Hinge,A190E3-H0F,ABS PA-757N,BLACK C_J91A11B5,Green II 1

36 CB-00004035

32-D003899

FFC,22 Pins,Green I 1

37 N/A

73-D004605

Isolated Tape,PET,384 mmx48 mmx0.05 mm,Green I 1

38 N/A

73-D005094

Tape,20 mmx20 mmx0.1 mm,Green I 1

39 N/A

77-D005180

Customer Label for ,A170E1-H0G,180 mmx100 mm,Green II 1

40 N/A

77-D005193

Customer Label for ,A170E1-H0G,15 mmx15 mm,Green II 1

41 N/A

77-D005191

Customer Label for ,A170E1-H0G,130 mmx80 mm,Green II 1

42 N/A

78-D005895

SeparatorA170E1-H0G,1130 mmx955 mmx11 mm,Green II 0.021

43 N/A

78-D005934

Pallet,A170E1-H0G,Wooden,N/A,1150 mmx970 mmx135 mm,Green II 0.021

44 C-00005847

40-D008680

Seat Assy,A170E1-H0P,ASSY,Black,Green II 1

45 C-00005944

40-D008678

Rear Assy,A190E3-H0M,ASSY,Black,Green II 1

46 C-00005945

40-D008677

Stand Assy,A190E3-H0M,ASSY,Black,Green II 1

47 P-00005955

78-D008901

Cushion,A190E3-H0M,EPS,White,460 mmx175 mmx210 mm,PS_Foam(Left),Green II 1

48 P-00005956

78-D008902

Cushion,A190E3-H0M,EPS,White,460 mmx175 mmx210 mm,PS_Foam(Right),Green II 1

49 N/A

79-D009027

Shipping Package Information for ,A190E3-H0M 1

50 DC-00008033

76-D009873

MENU for A190E3-H0M,Green II 1

51 N/A

78-D010933

Warranty Card,A170E1-H0G,Green II 1

52 C-00008027

40-D012371

Bezel Assy,A190E3-H0M,ASSY,Black,Green II 1

53 N/A

77-D012475

SN Label for ,A190E3-H0M,50 mmx25 mm,VE920mb,Green II 1

54 P-00008021

78-D012473

Carton,A190E3-H0M,474 mmx184 mmx477 mm,VE920mb,Green II 1

55 DC-00008032

77-D012470

Carton Label for ,A190E3-H0M,76.2 mmx76.2 mm,VE920mb,Green II 1

56 DC-00008031

77-D012469

Safety Label for ,A190E3-H0M,120 mmx50 mm,VE920mb,Green II 1

BOM LIST (VE920mb-1)

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

60

Model

Title

Date Rev:

ViewSonic Corporation

8. Exploded Diagram and Exploded Parts List

61

ViewSonic Corporation Confi dential - Do Not Copy VE920m-1_VE920mb-1

ViewSonic Model Number: VS10931
Rev: 1a

Serial No. Prefix: Q7T

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

1 N/A

MJ0E501K01

ISM_A190E3_HAT 1

2 C-00005943 40-D008790 BEZEL ASSY 1
2-1 N/A 40-D003809 BEZEL 1
2-2 N/A 40-D003811 LENS 1
2-3 N/A 40-D003805 KEYPAD 1
2-4 N/A 33-D000377 SPEAKER 4ohm 2w 2
2-5 N/A 42-D001524 SCREW T2.5*10L 4
2-6 N/A 77-D000226 VSC BIRDLOGO 1
2-7 N/A 77-D000224 VSC NAME PLATE 1

3 N/A 73-D004605 MYLAR PCBX 1

4 N/A 73-D005094 MYLAR LIGHT LEAKAGE 1

5 C-00005944 40-D008678 REAR ASSY 1
5-1 N/A 40-D003813 REAR 1
5-2 N/A 41-D003804 SUPPORT PLATE 1
5-3 HW-00000557 42A9930017 SCREW T3*8L 1

6 HW-00000556 42A9990005 SCREW T3*12L 2

7 C-00005945 40-D008677 STAND ASSY 1

8 N/A

42-D000314

42A9930013

SCREW M4*15L 4

9 C-00004026 40-D003812 COVER HINGE 1

10 C-00005847

40-D008680

SEAT ASSY 1

EXPLODED PARTS LIST (VE920m-1)

62

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

ViewSonic Model Number: VS10931
Rev: 1a

Serial No. Prefix: QEJ

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

1 N/A

MJ0E501K01

ISM_A190E3_HAT 1

2 C-00008027

40-D012371

BEZEL ASSY 1
2-1 N/A 40-D003809 BEZEL 1
2-2 N/A 40-D003811 LENS 1
2-3 N/A 40-D003805 KEYPAD 1
2-4 N/A 33-D000377 SPEAKER 4ohm 2w 2
2-5 N/A 42-D001524 SCREW T2.5*10L 4
2-6 N/A 77-D000226 VSC BIRDLOGO 1
2-7 N/A 77-D000224 VSC NAME PLATE 1

3 N/A 73-D004605 MYLAR PCBX 1
4 N/A 73-D005094 MYLAR LIGHT LEAKAGE 1

5 C-00005944 40-D008678 REAR ASSY 1
5-1 N/A 40-D003813 REAR 1
5-2 N/A 41-D003804 SUPPORT PLATE 1
5-3 HW-00000557 42A9930017 SCREW T3*8L 1

6 HW-00000556 42A9990005 SCREW T3*12L 2

7 C-00005945 40-D008677 STAND ASSY 1

8 N/A

42-D000314
42A9930013

SCREW M4*15L 4

9 C-00004026 40-D003812 COVER HINGE 1

10 C-00005847

40-D008680

SEAT ASSY 1

EXPLODED PARTS LIST (VE920mb-1)

Model

Title

Date Rev:

ViewSonic Corporation

63

Rev: 1a

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

1 N/A VE920m

LCD Monitor 1

2 P-00000595

7841919921 PE Foam Bag 1

3 P-00005956

78-D008902 PS Foam (Right) 1

4 P-00005955

78-D008901 PS Foam (Left) 1
5 N/A Different region (refer to BOM) Carton 1
6 N/A Different region (refer to BOM)

Power Cord 1

7 CB-00004287

32F3018003 Monitor Cable 1
8 CB-00000544

32F2818004 Audio Cable 1
9 N/A

N/A DVI Cable 1

10 N/A

Different region (refer to BOM) Menu (Quick Setup) 1

11 N/A

Different region (refer to BOM) Menu (CD-ROM) 1

12

N/A

Different region (refer to BOM) Warranty Registration Card 1

PACKING PART LIST (VE920m/mb-1 )

ViewSonic Model Number: VS10931

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

Packing diagram

64

9. Block Diagram

OSD Key Pad / Audio Out

D-sub

Analog Video

Speaker

AC Power

LDO

Main Board

LIPS

Backlight

LCD Module

DC-5V

5V

Signal

Audio In

DC-12V

12V

3.3V

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

10. Schematic Diagrams

Model

Title

Date Rev:

ViewSonic Corporation

65

GIN

STV

OR0N

GVOFF

SDA

OR2N

OCLKP

VSYNC

V18C

RIN

OB0N

KEY_UP

OG1N

VCM

VOL1

HSYNC

EG2P

ER0P

CLK+

AD3

AUTO_ADJ

GNDB

DCDC_ON/OFF EB0N

EB2N

R-

HWRESET

CKV

OR0P

OSTH

GNDR

OR2P

EG1P

DDC_DAT

OG1P

ER2N

PWR_SW

G+

VGH

CLK-

G-

R+

SCL EG0P

EB0P

AUDIO_ON

V5A

OE

B-

AD1

OG2P

OR1N

ECLKN

INV_ADJ

ER1N

OG0N

KEY_DOWN

EB1P

ER0N

OB2P

ECLKP

PANEL_ON/OFF

OB1N

EG0N

VGL

ER1P

OB2N

GMA[1..14]

V5A

EG2N

OG2N

STB

LED_OR

V33P

XAO

EB2P

B+

BIN

AD2

SOG

LED_GR

GNDG

VAA

OB1P

OB0P

POL

GVON

OR1P

CSZ

AD0

DDC_CLK

OG0P

ESTH

VCM_PWM

V5A_ESD

SOURCE_SELECT

EB1N

EG1N

OCLKN

V33C

INT

INV_ON/OFF

ER2P

MENU

OPTION1

OPTION2

B1

SCALER

POL

R-

SCL

CSZ

STB

STV
CKV

OE

GVON

GVOFF

ESTH

OSTH

ECLKN

ECLKP

OCLKP
OCLKN

RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC

G+

R+

G­B+
B­CLK+
CLK-

SDA
HWRESET
INT
AD0
AD3
AD1
AD2

INV_ADJ
VOL1

V18C
V33C

OR0N
OR0P

OG2N

OR1P

OR1N

OR2P

OR2N

OG0P

OG0N

OG1P

OG1N

OG2P

OB0N
OB0P
OB1N
OB1P
OB2N
OB2P

ER0N
ER0P
ER1N
ER1P
ER2N
ER2P

EG0N
EG0P
EG1N
EG1P
EG2N
EG2P

EB0N
EB0P
EB1N
EB1P
EB2N
EB2P

V5A

B4

MCU

CSZ
SCL
SDA

OPTION2

OPTION1

DDC_CLK
DDC_DAT

INT

INV_ON/OFF

HWRESET

VCM_PWM

DCDC_ON/OFF
PANEL_ON/OFF

XAO

AD0

AD1
AD2

AD3AUDIO_ON

SOURCE_SELECT
MENU
KEY_DOWN
KEY_UP
AUTO_ADJ

LED_OR
LED_GR

PWR_SW
V5A

VGA_5V

B5

DC/DC

DCDC_ON/OFF

VGH

VGL

VAA

V5A

V5

INVERTER I/F

B9

INV_ADJ

INV_ON/OFF

V33C

V5

B6

POWER

VAA

VCM_PWM

VCM

GMA[1..14]

V33PV5A

PANEL_ON/OFF

V18C

V33C

B10

PANEL_INTERFACE

ESTH
OSTH

STB
POL

GVON
GVOFF

STV

OE

CKV

GMA[1..14]

VCM

V33P

VGH

VAA

VGL

OCLKN

OCLKP

ECLKN

ECLKP

XAO

OG0P

OG0N

OR1N
OR1P
OR2N

OR0N

OR2P

OR0P

OG1N
OG1P
OG2N
OG2P

OB0N
OB0P
OB1N
OB1P
OB2N
OB2P

ER0N
ER0P
ER1N
ER1P
ER2N
ER2P

EG0N
EG0P
EG1N

EG2N

EG1P

EG2P

EB0N
EB0P
EB1N
EB1P
EB2N
EB2P

OSD

B7

LED_GR

PWR_SW

AUTO_ADJ

KEY_DOWN

KEY_UP

MENU

SOURCE_SELECT

LED_OR

V5A

AUDIO_ON

VOL1

OPTION1

OPTION2

B2

VGA

RIN

GIN

BIN

VSYNC

GNDR

GNDG

GNDBDDC_DAT

DDC_CLK

SOG

HSYNC

V5A

VGA_5V

V5A_ESD

B3

DVI

G+

R+

B-

R-

B+

G-

CLK+
CLK-

V5A

V5A_ESD

TOP

ViewSonic Corporation Confi dential - Do Not Copy VE920m-1_VE920mb-1

66

Model

Title

Date Rev:

ViewSonic Corporation

DC

V5A

VGL

VGH

VAA

DCDC_ON/OFF

V5A

VGH

DCDC_ON/OFF

VAA

VGL

V5

GND_POWER

VGLVGH

V5A

GND_POWER GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

VAA

VAA

GND_POWER

GND_POWER

GND_POWER

GND_POWER

V5A

GND_POWER

GND_POWER

GND_POWER

V5A

V5

[INV_GND]

(High --> Enable)

CP16CP16

12

ZDP6ZDP6

RP15RP15

TP

1

VGH1VGH1

1

3

2

D34D34

CP1CP1

CP9CP9

CP20CP20

3 2

1

QP18QP18

1 2

DP1DP1

TP

1

VGL1VGL1

CP15CP15

CP4CP4

RP16RP16

RR1RR1

CP38CP38

RP11RP11

+

CP17+CP17

RP6RP6

RP3RP3

1

3

2

D3D3

RP53RP53

CP28CP28

RP8RP8

CP37CP37

RP37RP37

RP49RP49

CP22CP22

1

32

QP4QP4

1

32

QP2QP2

CP39CP39

CP19CP19

1

32

QP17QP17

CP6CP6

LP5LP5

RP14RP14

LP4LP4

CP18CP18

RP20RP20

CP2CP2

OSC7FB8GND

6

BR/CTL

4

IN-

1

VCC

3

OUT

5

SCP

2

UP1UP1

RP51RP51 CP40CP40

RP48RP48

TP

1

V5A1V5A1

RP52RP52

CP10CP10

1

3

2

D2D2

CP36CP36

RP12RP12

RP1RP1

1 2

FP1FP1

CP25CP25

FB7IN-8OSC

6

OUT

4CE1

VCC

3

GND

5

SCP

2

UP2UP2

RP19RP19

RP50RP50

RP31RP31

CP11CP11

RP54RP54

TP

1

VAA1VAA1

CP21CP21

RP7RP7

LP6LP6

12

RP32RP32

CP14CP14

CP3CP3

LP3LP3

CP13CP13

1

32

QP13QP13

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Model

Title

Date Rev:

ViewSonic Corporation

DVI INTERFACE

V5A_ESD

G+

B+

R-

B-

R+

G-

CLK+

V5A

V5A_ESD

CLK-

V5A

V5A V5A_ESD

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

R7R7

C35C35

R20R20

C163C163

1

32

D14D14

DAT2-

1

DAT2+

2

2/4shield

3

DAT4-

4

DAT4+

5

DDC SCL

6

DDC SDA

7

VSYNC

8

R

25

HSYNC

28

DAT1-

9

DAT1+

10

1/3shield

11

DAT3-

12

DAT3+

13

+5V

14

SYNC GND

15

HPD

16

G

26

RGB GND

29

DAT0-

17

DAT0+

18

0/5shield

19

DAT5-

20

DAT5+

21

clk shield

22

clk+

23

clk-

24

B

27

CON1CON1

1 2

D5D5

1

32

D11D11

C36C36

R16R16

C31C31 C32C32

R213R213

D17D17

R17R17

1

2

3

D7D7

R13R13

C37C37

R18R18

C33C33

1

32

D15D15

1 2

D8D8

1

32

D12D12

R11R11

R19R19

R14R14

NC

1

NC

2

NC

3

GND4SDA

5

SCL

6

VCLK

7

VCC

8

U2U2

C39C39

C38C38

R12R12

C34C34

R9R9

1 2

D4D4

R6R6

R10R10

1

32

D16D16

R5R5

1

32

D9D9

R15R15

1

32

D13D13

1

32

D10D10

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68

Model

Title

Date Rev:

ViewSonic Corporation

INVERTER I/F

INV_ADJ

INV_ON/OFF

V33C

V5

GND_INV

GND_POWER

GND_POWER

V33C

V33C

1

2 3

Q19Q19

R198R198

R196R196

C30C30

8

7

6

5

4

3

2

1

CN2CN2

R195R195

R199R199

C162C162 R200R200

1

2 3

Q18Q18

R197R197

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Model

Title

Date Rev:

ViewSonic Corporation

MCU

SDA1
SCL1

LED

5V_ON/OFF

LED

5V_ON/OFF

DDC_CLK

DDC_DAT

SDA1

SCL1

CSZ

SCL

SDA

DDC_CLK
DDC_DAT

INT

HWRESET

AUDIO_ON

PANEL_ON/OFF

OPTION2

OPTION1

DCDC_ON/OFF

AD1
AD2

AD0

AD3

MENU
KEY_DOWN
KEY_UP
SOURCE_SELECT
AUTO_ADJ
PWR_SW
LED_GR
LED_OR

VCM_PWM

V5A

V5A

VGA_5V

INV_ON/OFF

XAO

VCPU

V5A

V5A

V5A

V5A

V5A

V5A

VCPU

V5A

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

VCPU

GND_POWER

GND_POWER

Avoid entering the
self-test mode of the
MCU.

MTV312M

03/08/04

10/20

(PANEL POWER CONTROL)

L8L8

DA2/P5.2

1

DA1/P5.1

2

DA0/P5.0

3

VDD3

4

NC

5

NC

6

RST

7

VDD

8

AD3/P6.3

9

VSS

10

X2

11

X1

12

ISDA/P3.4/T0

13

ISCL/P3.5/T1

14

STOUT/P4.2

15

AD2/P6.2/HLFHI

16

P1.0

17

P1.1

18

P3.2/INT0

19

P1.2

20

P1.3

21

P1.4

22

P1.5

23

P1.6

24

P1.7

25

AD1/P6.1

26

AD0/P6.0

27

HSDA/P3.1/TX

28

HSCL/P3.0/RX

29

DA10/P6.4

30

DA11/P6.5

31

DA13/P6.7

33

DA6/P5.6

34

DA7/HCLAMP

35

VBLANK/P4.0

36

HBLANK/P4.1

37

HALFV/DA9

38

HLFHO/DA8

39

DA5/P5.5

40

DA4/P5.4

41

DA3/P5.3

42

HSYNC

43

VSYNC

44

DA12/P6.6

32

U3U3

R47R47

1 2

ZDP7ZDP7

C49C49

C48C48

C171C171

R43R43

R35R35

3 2

1

Q3Q3

R218R218

R49R49

C43C43

R48R48

C40C40

1

2 3

Q6Q6

1 2

D18D18

VCC

8

A12WP

7

SCL

6

SDA5GND

4

A2

3

A0

1

U4U4

C50C50

R25R25

R50R50

Y2Y2

1
2
3
4

CN8CN8

C44C44

1

2 3

Q7Q7

C42C42

32

1

Q1Q1

R219R219

R52R52

C45C45

R23R23

R51R51

R30R30

C46C46

R26R26

R24R24

C47C47

R27R27

R45R45

R42R42

R32R32

R29R29

R22R22

R28R28

1

2 3

Q2Q2

R46R46

R44R44

12

D19D19

R31R31

R37R37

R36R36

C172C172

R33R33 R34R34

R140R140

C41C41

R193R193

R139R139

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70

Model

Title

Date Rev:

ViewSonic Corporation

OSD INTERFACE

AUD_R

AUD_L

AUD_R

AUD_L

LED_O

LED_G

LED_O

LED_G

V5A

LED_OR

MENU

AUTO_ADJ

PWR_SW
AUDIO_ON

VOL1
OPTION1
OPTION2

SOURCE_SELECT

KEY_DOWN

KEY_UP

LED_GR

GND_POWER

V5A

V5A

GND_AUD GND_AUD

GND_AUD

V5A

1

32

Q14Q14

453627

18

CP34CP34

R215R215

R216R216

L24L24

1

AUD_R1AUD_R1

1

32

Q16Q16

R179R179

J1J1

45
36
27
18

LP9LP9

L21L21

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

CN3CN3

R182R182

1

3 2

Q17Q17

R214R214

R53R53

L20L20

R217R217

C167C167

L22L22

45
36
27
18

LP10LP10

L23L23

R181R181

C170C170

45
36
27
18

LP11LP11

C168C168

C169C169

R54R54

4 5

3 6

2 7

1 8

RP47RP47

1

AUD_G1AUD_G1

1

3 2

Q15Q15

453627

18

CP33CP33

R184R184

4 5

3 6

2 7

1 8

RP46RP46

1

AUD_L1AUD_L1

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Model

Title

Date Rev:

ViewSonic Corporation

PANEL I/F

VCOM

VCOM

VSA

PANEL_VGL

CKV

VGL

VCM

ESTH

OE

POL

VSD

PANEL_VGL

VGD

VAA

STB

VSD

STV

VGD

VGD

VGH_PVGH

GVOFF

XAO

PANEL_VGH

GVON

OSTH

VSA

PANEL_VGH

GVOFF

GVON

VGH_P

OB0P

ESTH

GMA8

OR0N

OR1N

OG1P

GMA1

OR1P

GMA2

OB2P

OB0N

STB

OG2N

OB1P

GMA3

OG2P

GMA6

GMA5

OG1N

XAO
OE

OCLKN

GMA4

OR2P

CKV

GMA9

ECLKN

OSTH

OCLKP

OG0N

STV
VGD

PANEL_VGL

PANEL_VGH

VCOM

POL

OB1N

OB2N

VSD

VSA

ECLKP

GMA7

GMA14

GMA13

GMA12

GMA11

GMA10

VCOM

OR0P

OR2N

OG0P

ER0N

ER0P

ER1N

ER1P

ER2N

ER2P

EG0N

EG0P

EG1N

EG1P

EG2N

EG2P

EB0N

EB0P

EB1N

EB1P

EB2N

EB2P

XAO

VGL

VCM

VGH

GVON

GVOFF

V33P

VAA

ECLKN

OG2P

ER0N

OG0N

OR2P

OR0N

EG2P

ER1P

OE

EB2P

GMA2

OG1P

GMA9

POL

EG1P

OR2N

OCLKP

OB0N

ER0P

XAO

GMA3

STB

OB1N

EB1P

GMA10

GMA8

GMA1

EB0P

ECLKP

ESTH

GMA7

OG2N

GMA5

OG0P

OSTH

GMA6

OB0P

GMA4

EG1N

ER2N

OCLKN

OR1P

EB0N

EG0P

EB2N

EG2N

OR1N

EG0N

ER1N

CKV

OR0P

EB1N

OG1N

ER2P

OB2P

STV

OB2N
OB1P

GMA14

GMA13

GMA12

GMA11

V33B

V33B

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

(3-STEP)

C53C53

1

OE1OE1

1

GVON1GVON1

R58R58

1

STV1STV1

1

POL1POL1

C59C59

1

P_VGH1P_VGH1

1

ESTH1ESTH1

L11L11

C58C58

A_G

2

A_D

6

B_G

5

B_S

4

A_S1B_D

3

Q9Q9

C52C52

1

VSD1VSD1

R59R59

C56C56

R57R57

1 2

R60R60

OUT

1

VDD

2

VSS3NC

4

CD

5

U5U5

L9L9

1

VSA1VSA1

1

STB1STB1

R55R55

L13L13

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

CN4CN4

C64C64

1

OSTH1OSTH1

R56R56

L12L12

C55C55

1 2

ZD1ZD1

C63C63

L10L10

1

GVOFF1GVOFF1

1

CKV1CKV1

C51C51

C57C57

1

32

Q8Q8

1

P_VGL1P_VGL1

1

VGD1VGD1

C54C54

C61C61

1

VCOM1VCOM1

C62C62

C60C60

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

CN5CN5

L14L14

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Model

Title

Date Rev:

ViewSonic Corporation

POWER

VSCM

VOPVPREF

VOPVAA

VSCN_OUT

VOP

VSCN

V33C

VPREF

V18C

VSCM_ADJ

VCM

VCN

V33A

VCM_PWM

GMA7

GMA5

VS6

VS14

VS9

GMA12

VS7

GMA9

GMA4

VS8

GMA2VS2

GMA13

GMA11

VS10

VS5

GMA10

VS11

VS12

GMA14

GMA8

GMA6

VPREF

VS3

GMA1VS1

GMA3

VS4

VPREF

VCN

VS13

V18C

PANEL_ON/OFF

VAA

V33C

V5A

VCM_PWM

V33P

VCM

GMA10

GMA5

GMA9

GMA6

GMA12

GMA8

GMA7

GMA4

GMA3

GMA11

GMA14

GMA13

GMA1

GMA2

V5A

GND_POWER

V5A

V33A

V33A

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

(SCALER VCC)

9.99V

(Panel VCC)

(SCALER Core VCC)

(PANEL VCC)

R98R98

1

VCN1VCN1

1

GMA2GMA2

1

GMA6GMA6

R104R104

R82R82

R100R100

R81R81

1

VOP1VOP1

1 2

D21D21

R107R107

C105C105

R93R93

C108C108

1

GMA7GMA7

1

GMA3GMA3

R204R204

TP

1

V33C1V33C1

C71C71

1

32

Q11Q11

R201R201

C78C78

R70R70

GND

1

VOUT2VIN

3

VOUT

4

U10U10

1

32

QP19QP19

R205R205

R105R105

R66R66

GND

1

VOUT2VIN

3

VOUT

4

U8U8

R92R92

R86R86

R96R96

L15L15

1

GMA8GMA8

C93C93

C115C115

1

GMA11GMA11

C91C91

C111C111

R102R102

1

GMA1GMA1

1 2

D20D20

1

32 Q10Q10

R64R64

R106R106

C92C92

L17L17

1

GMA9GMA9

R74R74

R76R76

1

VPREF1VPREF1

1

VCM1VCM1

1

GMA5GMA5

R83R83

GND

1

VOUT2VIN

3

VOUT

4

U12U12

C113C113

PP12PP12

Vout

1

GND

2

Vin

3

U6U6

C79C79

1

GMA14GMA14

R89R89

R75R75

R90R90

C104C104

C72C72

1

GMA12GMA12

R99R99

R79R79

R206R206

C112C112

R101R101

R87R87

TP

1

V33A1V33A1

R71R71

C106C106

L18L18

R80R80

R207R207

C94C94

R65R65

R202R202

C103C103

R97R97

R208R208

C109C109

C107C107

1

GMA10GMA10

GND

1

VOUT2VIN

3

VOUT

4

U13U13

C81C81

R203R203

3

2

1

84

+

-

U14A

+

-

U14A

R103R103

C100C100

5

6

7

84

+

-

U14B

+

-

U14B

C70C70

R67R67

C73C73

C110C110

R72R72

PP11PP11

1

GMA13GMA13

R91R91

TP

1

V18V1V18V1

L16L16

C80C80

C114C114

R73R73

1

GMA4GMA4

R61R61

R108R108

R88R88

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73

Model

Title

Date Rev:

ViewSonic Corporation

SCALER

ER0N

OR1N

OB2N

GVOFF

STB

EB1P

EB2P

EG0P

OG1N

EG2P

OSTH

OR0P

CKV
OE

ER1N

OG0P

EG1P

OR0N

ER2P

OB2P

OG0N

EB1N

OR2P

OB1N

EB0P

STV

OR1P

ECLKN

OR2N

OB0P

ESTH

EB0N

OB0N

OG1P

ER2N

OG2N

OCLKN

ER0P

OCLKP

OG2P

ECLKP

EG1N

EB2N

ER1P

OB1P

EG2N

GNDR

G+

R-

B-

HSYNC

CLK-

G-

CLK+

SOG

B+

BIN

VSYNC

GIN
GNDG

R+

GNDB

RIN

INT
AD0

CSZ

AD3

HWRESET

AD1

SCL
SDA

AD2

EG0N

POL1

GVON1

OCLKP
OCLKN

ECLKP
ECLKN

ESTH
OSTH

STB
STV
CKV
OE

HWRESET
INT
AD0
AD3
AD1
AD2

V18C

V33C

RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC

R+
R­G+
G­B+
B­CLK+
CLK-

CSZ
SCL
SDA

OR2P
OR2N
OR1P
OR1N
OR0P
OR0N

OG2P
OG2N
OG1P
OG1N
OG0P
OG0N

OB2P
OB2N
OB1P
OB1N
OB0P
OB0N

ER2P
ER2N
ER1P
ER1N
ER0P
ER0N

EG2P
EG2N
EG1P
EG1N
EG0P

EB2P
EB2N
EB1P
EB1N
EB0P
EB0N

EG0N

GVON

POL

POL

GVON

GVOFF

INV_ADJ

VOL1

V5A

VDPLLVPLLVAD VPO VDDVDVI

VDPLL

VPLLV33C

V33C VAD

VPO

V33C

V33C VDVI

VDDV18C

V33C

VDVI

V33C

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

峙

V5A

C26C26

R1R1

C164C164

C11C11

+

C165+C165

Y1Y1

1

VOL_ADJ1VOL_ADJ1

C9C9C22C22

R212R212

R210R210

C19C19

C25C25

R187R187

C16C16

C12C12

R211R211

C5C5

R209R209

R3R3

C27C27

R186R186

C24C24

1

32

Q20Q20

C2C2

R138R138

C13C13

C20C20

C8C8

C15C15

L3L3

L4L4

R188R188

C28C28

C1C1

C6C6

RIN0

63

GIN0

60

SOGIN0

61

BIN0

58

RIN0M

62

GIN0M

59

BIN0M

57

HSYNC0

37

VSYNC0

38

R+

40

R-

41

G+

43

G-

44

B+

46

B-

47

CK+

49

CK-

50

REXT

52

REFP

66

REFM

67

ALE/CSZ

69

WRZ/SDA

70

RDZ/SCL

71

HWRESETZ

32

INT

72

PWM0

73

PWM1

74

NC

106

NC

107

AVDD

55

AVDD_MPLL

35

AVDD_DVI

45

BYPASS

3

AVDD_DVI

51

VDDP11VDDP21VDDP84VDDP94VDDP

104

VDDP

114

VDDP

126

VDDC18VDDC87VDDC97VDDC

117

AVSS_DVI

39

AVSS56AVSS_MPLL

36

AVSS_LPLL

2

AVSS_PLL54AVSS_DVI42GNDP10GNDP20GNDP85GNDP95GNDP

115

GNDP

127

GNDC19GNDC86GNDC

96

GNDP

105

GNDC

116

XIN

33

XOUT

34

RA1P

108

RA1N

109

RA2P

110

RA2N

111

RA3P

112

RA3N

113

GA1P

98

GA1N

99

GA2P

100

GA2N

101

GA3P

102

GA3N

103

BA1P

88

BA1N

89

BA2P

90

BA2N

91

BA3P

92

BA3N

93

RB1P

16

RB1N

17

RB2P

22

RB2N

23

RB3P

24

RB3N

25

BUSTYPE

6

NC

7

GB1P

8

GB1N

9

GB2P

12

GB2N

13

GB3P

14

GB3N

15

NC

122

NC

123

BB1P

124

BB1N

125

BB2P

128

BB2N

1

BB3P

4

BB3N

5

CLKAP

118

CLKAN

119

CLKBP

120

CLKBN

121

ESP

75

OSP

76

AD1/EINV

77

AD2/OINV

78

GPO0

83

GPO1

82

GPO2

81

GPO3

80

GPO4

79

DDC1_CLK/GPO8

29

DDC1_DAT/GPO7

28

AD0/GPO6

30

AD3/GPO5

31

AVDD_PLL

53

AVDD

65

AVSS64AVSS_DVI

48

AVSS

68

U1U1

L6L6

C3C3

C7C7

C21C21

R2R2

C17C17

C23C23

C4C4

C29C29

1

VOL1VOL1

R185R185

C10C10

D1D1

C18C18

L1L1

C14C14

C166C166

L5L5

L2L2

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

74

Model

Title

Date Rev:

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VGA

VSI

DAT_DDC

CLK_DDC

HSYNC

VSYNC

VGA_5V

VGA_5V

VGA_5V

RIN

GIN

BIN

VSYNC

GNDR

GNDG

GNDB

DDC_DAT

DDC_CLK

SOG

HSYNC

DDC_CLK

DDC_DAT

V5A

VGA_5V

V5A_ESD

V5A

V5A_ESD GND_POWER

GND_POWERGND_POWER

GND_POWER GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

GND_POWER

Most of Customers Recommended.

(0603/100)

03/08/04

03/08/04

12/15/2003

12/15/2003

1
6
2
7
3
8
4
9
5

11

12

13

14

15

10

CN7CN7

R129R129

R114R114

1 2

D33D33

1

32

D24D24

1

32

D25D25

C159C159

R136R136

R137R137

R119R119

R121R121

C118C118

1 2

D28D28

C125C125

R131R131

1

2

3

D31D31

R135R135

R125R125

C122C122

R111R111

R112R112

R134R134

R123R123

C158C158

C129C129

R130R130

D22D22

R109R109

1 2

D29D29

1 2

D30D30

R128R128

C126C126

C121C121

R113R113

TP

1

VSYNC1VSYNC1

C117C117

C116C116

1

32

D26D26

R124R124

C123C123

R122R122

R110R110

R127R127

R116R116

R117R117

TP

1

HSYNC1HSYNC1

C119C119

NC

1

NC

2

NC

3

GND4SDA

5

SCL

6

VCLK

7

VCC

8

U15U15

C127C127

C120C120

R115R115

1 2

D32D32

R126R126

1 2

D27D27

D23D23

R133R133

C124C124

C128C128

L19L19

R118R118

R120R120

C157C157

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

11. PCB Layout Diagrams

75

Model

Title

Date Rev:

ViewSonic Corporation

ViewSonic Corporation Confi dential - Do Not Copy VE920m-1_VE920mb-1

TOP

76

Model

Title

Date Rev:

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ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

BOT

77

Model

Title

Date Rev:

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ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

TMSK

78

Model

Title

Date Rev:

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ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

BMSK

79

Model

Title

Date Rev:

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ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

TPATE

80

Model

Title

Date Rev:

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ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

TSLK

81

Model

Title

Date Rev:

ViewSonic Corporation

ViewSonic Corporation Confidential - Do Not Copy VE920m-1_VE920mb-1

DRL

82

* Reader’s Response*

Dear Readers:

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

Assessment

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

Unit Excellent Good Fair Bad

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram and Exploded Parts List

9. Block Diagrams

10. Schematic Diagrams

11.PCB Layout Diagrams

B. Are you satisfied with this Service Manual?

Item Excellent Good Fair Bad

1. Service Manual Content

2. Service Manual Layout

3. The form and listing

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

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 VE920m-1_VE920mb-1