ViewSonic VE920m-1, VE920mb-1, 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]

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

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

TFTLCD PANEL

Input Signal

Sync Compatibility

Compatibility

Power Voltage AC 100-240V, 50/60Hz Yes
Power Consumption
Audio 1.2 W (audio), 2W*2 (speaker) Yes

Ergonomics

Colors ( 6 bit + 2 bit FRC) 16.2 M colors
Response Time (Typ) 8 ms
Viewing Angle (H/V) 150 ° / 130 °
Recommend resolution 1280x1024@60Hz
Analog (75ohms, 0.7/1.0 Vp-p) Yes
Digital Yes
Separate Sync Yes
Composite Sync No
Sync on Green No
PC Yes
Power Mac Yes
TV Box (NextVision 6) Yes

On Mode(Max / Typ) 58W
Active Off Mode (Max) 2W

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

OSD Control

Dimension

Weight

Operating Condition

Storage Condition

Regulation

GENERAL specification

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

Contrast and Brightness Controls

[X X] [ 1 ] [▼] [▲] [ 2 ] [ ]

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

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

Physical (Net kg/lb) 5.2 kg / 11.5 lb
Package (Gross Kg/lb) 6.8 kg / 15.0 lb
Temperature (℉/℃) 41℉-95℉/+5℃-+35℃

Humidity (%) 20 % - 80 %
Temperature (℉/℃) -4℉-131℉/-20℃-55℃
Humidity (%) 20 % - 85 %
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

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

Yes

16.7 x 17.1 x 8.7 (in)

17.6 x 18.7 x 7.2 (in)

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VIDEO INTERFACE

TEST WITH NO DAMAGE

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

1. Video RGB (Analog)

Video Signals

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

Resolution Compatibility

Exclusions Not compatible with interlaced video

2. DVI (Digital)
Separate

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 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.

POWER SUPPLY

Power Supply (Adapter) Part Number: 27-D003115
Input Voltage Range
Input Frequency Range
Short Circuit Protection
Over Current Protection 3.3~4.5 A typical at 5 VDC
Leakage Current

Efficiency 80 % TYPICAL AT 115 VAC FULL LOAD
Fuse

Power Dissipation

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

Power Supply Cold Start

Power Supply Transient Immunity

100 to 240 VAC
50 to 60 Hertz
OUTPUT CAN BE SHORTED WITHOUT DAMAGE

3.5 MA (MAX) AT 254VAC / 60HZ

INTERNAL AND NOT USER REPLACEABLE

58 (Max) Watt

1.8 A RMS @ 100 VAC,

SHALL START AND FUNCTION PROPERLY WHEN UNDER FULL LOAD,
WITH ALL COMBINATIONS OF INPUT VOLTAGE, INPUT FREQUENCY,
AND OPERATING TEMPERATURE
SHALL BE ABLE TO WITHSTAND AN EN61000-4-4 ±2KV TRANSIENT

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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

Power Supply Acoustics

US Type Power Cable

European Type Power Cable

CCC Type Power Cable

Power Saving Operation(Method) VESA DPMS Signaling

Shall be able to function properly, without reset or visible screen artifacts, when
½ cycle of AC power is randomly missing at nominal input
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
Separate 3-prong NEMA 5-15P type plug. Length = 1.8m. Connects to display.
Color = Black
Schuko CEE7-7 type plug.
Length = 1.8m, Connects to display.
Color = Black
Separate 3-prong type plug.
Length = 1.8m. Connects to display.
Color = Black

Power Consumption

Recovery Time

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

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

2.5 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency
Vertical Refresh Rate
Maximum Pixel Clock 135 MHz (EDID file is 140MHz)
Sync Polarity Independent of sync polarity.

30 – 82 kHz
50 – 85* Hz.

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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 ] [ ]

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

[ ] 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)

Short Cuts Function from the button(s)

[1]
[2]

[▼] or [▲]

Main Menu
Auto image adjust
To immediately activate Contrast menu. It should be change to Brightness
OSD by push button [2]

[▼] + [▲]

[1] + [2]

[1] + [▼] + [▲]

[1] + [▼]
[1] + [▲]

[XX]

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

Recall both of Contrast and Brightness to default
Toggle 720x400 and 640x400 mode when input 720x400 or 640x400
mode
White Balance. (Not shown on user’s guide)
Power Lock
OSD Lock
Audio Mute on /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
Line input signal 1.0Vrms@1kHz
Line input impedance 10k ohm
Maximum power output (Electric)
Signal to Noise Ratio 72db
Frequency response F0 -20kHz (F0: Lowest resonant freq.)
Distortion <8% THD @1kHz

Vibration

3.5 mm stereo jack

2W

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

Screen image

Connector PC99 requirement Audio in
Cable type / length 3.5mm stereo cable / 1.8m length

Audio DPMS

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

Lime Green pantone # 577C

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/Brightness

Audio Adjust

Color Adjust

Information

Manual Image Adjust

Contrast (+ / -)
Brightness (+ / -)
Volume (+ / -)
Mute On/Off
sRGB
9300K
6500K
5400K
5000K

User Color

Horizontal Size + / -

H/V Position

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

H Position (+ / -)
V Position (+ / -)

Setup Menu

Fine Tune + / ­Sharpness + / -

English
French
German
Spanish

Language Select

Resolution Notice On/Off
Input Priority On/Off

OSD Position

OSD Time Out 5/15/30/60

Italian
Finnish
Japanese
Simplified Chinese
Traditional Chinese

H Position (+ / -)
V Position (+ / -)

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

1
2
3
4
5
6
7
8

Pattern Description Remark

Gray_Scale_0-100_V
Gray_Scale_0-100_H

Black Full Screen Black Figure 3

Red Full Screen 50% Red Figure 4

Green Full Screen 50% Green Figure 5

Blue Full Screen 50% Blue Figure6

White Full Screen White Figure7

Black_Tile Black Tile Under White Background Figure 8

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

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

Figure 1
Figure 2

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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

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

Fig1

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.

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

Fig 2.2

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 2.4

Fig 2.5

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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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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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26

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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27

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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28

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

Fig 5.2

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29

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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30

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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31

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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32

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

33

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8. ISP Adaptor Schematic

9. Adatptor Linking

The Monitor Set

Connect with
VGA Cable
15Pins to 15Pins

ISP Adaptor

Connect with
Printer Cable
25Pins to 25Pins

PC/HOST

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34

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

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35

Monitor Assembly and Disassembly

5.1 Separate Stand Assy

5.1.1 Remove Seat Assy

Step 1 :

Press Stand Assy’s bottom part in
Seat Hinge

Step 2:

Remove Seat Assy

5.1.2 Separate Stand Assy

Step 1 :

Loose and Remove 2 screws

Step 2 :

Remove Stand Assy

36

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5.2 Separate Rear Cover (Rear Case Assy)

Separate Bezel hooks to take Bezel and Rear Cover apart.

Step 1 :

Remove Cover Hinge

Step 2 :

Loose and Remove 2 screws

Step 3 :

Separate Bezel hooks to take
Bezel and Rear Cover apart.

Step 4 :

Remove Rear Cover

Step 5 :

Completed

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37

5.3 Remove Power Board

5.3.1 Remove FFC

5.3.2 Lift up LCD module and

remove Bezel

5.3.3 Remove Metal Cover

Step 1 :

Loose and remove 4 screws

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38

Step 2 :

Loose and remove 2 screws

Step 3 :

Loose and remove 2 screws

Step 4 :

Remove the tape

Step 5 :

Remove 2 pieces of Backlight wires.

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39

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

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40

5.4 Change New Power Board

Step 1 :

Insert New Power PCBA

Step 2 :

Fasten 2 fixed screws of Power PCBA

Step 3 :

Insert 2 pieces of Backlight wires.

5.5 Remove AD PCBA

5.5.1 Remove FFC

Step 1 :

Remove 2 FFCs

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41

Step 3 :

Loose and remove 4 screws

Step 4 :

Remove AD PCBA

Step 5 :

Completed

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42

5.6 Change New AD PCBA

Step 1 :

Insert New AD PCBA

Step 2 :

Fasten 4 screws

Step 3 :

Insert FFC

Step 4 :

Insert 2 FFC
Completed

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43

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

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44

Step 5 :

Fasten 2 screws

Step 6 :

Fasten 2 screws

Step 7 :

Place LCD module to LCD Bezel.

Step 8 :

Insert FFC

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45

5.8 Remove OSD PCBA

Step 1:

Separate both Audio
Cable

Step 2 :

Take OSD PCBA apart

Step 3:
Completed

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46

5.9 Change New OSD PCBA

Step 1 :

Place New OSD PCBA

Step 2 :

Insert Audio Cable to connectors
of OSD PCBA

Step 3:
Completed

5.10 Rear Cover Assy Assembly

Step 1 :

Place Rear Cover

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47

Step 2 :

Fasten 2 screws

Step 3 :

Remove Cover Hinge

5.11 Stand Assy Assembly

Step 1:

Place Seat Assy

Step 2 :

Fasten 4 screws

Step 3:

Join Seat Assy

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48

6. Troubleshooting Flow Chart

Defect Mode Failure Analysis Repair Testing

Light On Test

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

stage

Flash Dots

Abnormal

Display

Bright Dot

Dark Dot

Backlight

Light Leakage

Mura

Image Sticking

Brightness spot

Particle

Dot Defect

Image Remain

Group Bright
Dots

Others Cosmetics

Check Panel

Panel Change

Defect

NG

Next Step

A

49

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TEST

Completed

Defect Mode Failure Analysis Repair Testing

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

stage

A

Display Noise

Power on

Check PCBA

AD/B Change

Display
Abnormal

Power/B Change

Inverter/B Change

Flicker

CNT/B Change

Beat Display
Flicker

Beat Display
Shut Down
Abnormal

Display Wave

Check Panel

Check PCBA

Panel Change

AD/B Change

Power/B Change

CNT/B Change

Check Panel

Panel Change

No Backlight

Check Adapter

Adapter Change

Next Step

NG

TEST

B

Completed

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50

A

bnormal

Out

Next Step

Check PCBA

Check P

anel

Check P

CBA

Check PCBA

Check P

anel

Check PCBA

Failure Analysis Repair Testing

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

B

Display White

AD/B Change

Power/B Change

Booting Delay

Brightness
Even
Abnormal

Inverter/B Change

OSD/B Change
Power/B Change

Beat Display
No Backlight

Inverter/B Change

Panel Change

Check Adapter

Adapter Change

No signal

AD/B Change

R.G.B
Display
Abnormal

CNT/B Change

Gray Scale
Display

Check Wire

VGA cable

DVI cable

Panel Change

NG

TEST

C

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51

Completed

Defect Mode Failure Analysis Repair Testing

C

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

stage

Horizontal
Line Defect

Vertical
Weak Line

Horizontal
Weak Line

Check PCBA

Check PCB

AD/B Change

Vertical
Band Defect

Check Panel

Panel Change

Horizontal
Band Defect

Power Saving
Display
Abnormal

Check PCBA

Check PCB

AD/B Change

AD/B Change

Peculiar Smell

Check PCBA

Check PCB

Power/B Change

Inverter/B Change

Next Step

NG

TEST

Complete

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52

LED Off

No Power

LED Dark

LED Abnormal

LED Flicker

Cable Change

Cable

Change

LED Loss

Next Step

Defect Mode Failure Analysis Repair Testing

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

AD/B Change

Power/B Change

Power ON/OFF

Abnormal

Turn Off

Check PCBA

Check PCBA

Abnormal

CNT/B Change
Inverter/B

OSD/B Change

Check Wire

Check Wire

OSD Cable

AC Power Change

DC Power CNT

Check Adapter

Adapter Change

LED Display

Abnormal

Check PCBA

AD/B Change

Power/B Change
Inverter/B

OSD/B Change

Check Wire

OSD Cable

DC Power CNT

Adapter Change

NG

53

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TEST

Completed

Defect Mode Failure Analysis Repair Testing

Abnormal BIOS

&OSD

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

stage

OSD Key
Unavailable

OSD Can’t
Input

OSD Can’t

Check PCB

AD/B Change

CNT/B Change

Power/B Change
Inverter/B

Abnormal

Loudspeaker

Read
OSD No

Display

OSD Jiggle

OSD Display
Abnormal

Voice Loss

Check Wire

Check BIOS

Abnormal
Loud

L/R
Abnormal

Check PCBA

Check Wire

OSD/B Change

D-sub cable
OSD cable

VGA cable
DVI cable

BIOS Update

AD/B Change
CNT/B Change

Power/B Change
Inverter/B Change

OSD/B Change

No Voice

L/R Same
Volume

Check Loudspeaker

OSD Cable Change

Loudspeaker
Change

Loudspeaker
Noise

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Next Step

54

NG

TEST

Completed

Check PCBA

Check Panel

Next

Step

Check PCB

Defect Mode Failure Analysis Repair Testing

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

Other Abnormal

Display

Display Shut
Down

AD/B Change

Power/B Change

CNT/B Change

Panel Change

Display Flicker
((tapping )

Check PCBA

AD/B Change

CNT/B Change

Check Panel

Panel Change

DVI Signal
Display

AD/B Change

Abnormal

EDID Update

TV Function
Display
Abnormal

Check PCBA

Check Wire

Check Controller

TV /B Change

AV Cable Change

Remote controller
Change

NG

TEST

Complete

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55

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.

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56

7. Recommended Spare Parts List

V

g

(

)

g

g

g

(

)

7

j

y

h

g

jex_

c

k

l

h

g

I

I

I

g

I

φ

2

φ

2

,

g

g

p

C

t

p

I

g

I

g

I

ViewSonic Model Number:VS10931

RECOMMENDED SPARE PARTS LIST (VE920m-1)

Rev: 1a

Serial No. Prefix: Q7T

Item ECR/ECN

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

Accessories:

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

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

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

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

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

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

PC Board Assembly:

8 Main Board , A190E3, A190E3-T-S1, 303-11, Rev.0
9 Cover Hinge, A190E3-H0F, ABS PA-757N, BLACK

Cabinets:

10 Seat Ass
11 Front Panel, A190E3-H0M, ASSY, Silver, Injex_Plastic,

12 Back Cover, A190E3-H0M, ASSY, Black, In
13 Cover A190E3-H0M, ASSY, Blac
14 Audio Cable, A150X2, 18AWG, 180cm, Black, JCE

Cables:

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

16 FFC-OSD, 22 Pins, TennRic
17 Monitor Cable, A150X2, 30AWG, 180cm, Black, JCE
18 Safety Label for , A190E3-H0M, 120 mmx50 mm, Chang

Documentation

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

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

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

22 Screw, M3*P0.5*4,

Hardware:

23 Screw, M3*P1.27*12,
24 SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips

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

26 Stand-Off 4 #-40*11.8

Miscellaneous:

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

Packing Material:

29 Generic Foam Se
30 Generic Box
31 Craft Box , A190E3-H0M, paper, printing, 474 mmx184

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

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

34

Plastics:

Description

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

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

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

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

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

BSMI, 1800 mm, I Shen

C J91A11B5, In

Analo

foi

Huan

VSC VE920m-1+Caution Card, Green I

VSC VE920m-1Green I

Huan

Cross Recess, plate Ni, Screw_with_Washer, SHYE CHING
SCREW

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

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

mmx475 mm, Chen Ti Pa

mmx210 mm, Telun

mmx210 mm, Telun
Panel Protector Film, A190E2-H06, mylar, 400X325X0.1
MM

ex

, A170E1-H0P, ASSY, Black, Cherng Jyie

, VSC VE920m-1, Green I

, VSC VE920m-1, Green I

head D8

awa/Shye Chin

5.5*

5.5*

er, VSC VE920m-1, Green I

, PS Foam(Left), Green I

, PS Foam(Right), Green I

Plasti

ViewSonic P/N Ref. P/N

A-00004021 27-D003115 1

A-00005946

A-00005947

A-00005948

A-00005949

A-00005950

B-00004023 35-D002998 1
B-00005942 35-D003765 1

C-00004026 40-D003812 1

C-00005847 40-D008680 1

C-00005943 40-D008790 1

C-00005944 40-D008678 1
C-00005945 40-D008677 1

CB-00000544 32F2818004 1

CB-00004034 32-D000557 2

CB-00004035 32-D003899 1
CB-00004287 32F3018003 1

DC-00005951 77-D009065 1

DC-00005953 76-D009060 1

DC-00005954 76-D009062 1

DC-00005957 77-D009064 1

HW-00000553 42A9930008 2000
HW-00000556 42A9990005 2000

HW-00004042 42-D000649 2000

HW-00005884 42-D001756 2000

M-00000559 42A9940007 2000
M-00000560 7345511002 1

P-00000595 7841919921 1

P-00001347 30833
P-00002515 20653

P-00005952 78-D009063 1

P-00005955 78-D008901 1

P-00005956 78-D008902 1

PL-00005958 73-D001222 1

32E1818015

AJ0E3T5A2M

32E1818013

(AJ0E3T5C2M)

32E1818018

(AJ0E3T5E2M/K2M)

32E1818060

(AJ0E3T5K2M)

32-D001922

AJ0E3T5W2M

Location Universal number# Q'ty

1

1

1

1

1

Remark 1:

Remark 2:

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

57

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

)

ViewSonic Model Number: VS10931

RECOMMENDED SPARE PARTS LIST (VE920mb-1

Rev:1a
Serial No. Prefix: QEJ

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

1 Accessories:
2

PC Board Assembly:

3
4
5

Cabinets:

6
7
8
9

10

Cables:

11
12
13
14

Documentation:

15
16
17

Hardware:

18
19
20
21
22 Miscellaneous:
23

Packing Material:

24 Generic Foam Set P-00001347 30833
25 GenericCarton P-00002515 20653
26
27
28
29 Plastics:

Power Cord
Control Board ,Rev.31 B-00004023 35-D002998 1
Power Supply Board Ver:00
Main Board,Rev.07 B-00005942 35-D003765 1
Cover Hinge C-00004026 40-D003812 1
Seat Assy C-00005847 40-D008680 1
Back Cover C-00005944 40-D008678 1
Cover-Stand Assy C-00005945 40-D008677 1
Front Panel (Bezel) C-00008027 40-D012371 1
Audio Cable,180cm
Flat Cable (FFC_X, 0.50x45x62xCx(5/5)x(0.175x0.3) CB-00004034 32-D000557 2
Flat Cable (FFC-OSD,22) CB-00004035 32-D003899 1
Monitor Cable,180cm
Safety Label DC-00008031 77-D012469 1
Carton Label DC-00008032 77-D012470 1
User's Guide DC-00008033 76-D009873 1
Screw,M3*P0.5*4,φ5.5*2
Screw,M3*P1.27*12,φ5.5*2 HW-00000556 42A9990005 2000
SCREW,M4,P=0.7 mm,L=8 mm HW-00004042 42-D000649 2000
SCREW,M4,P=0.7 mm,L=15 mm HW-00005884 42-D001756 2000
SCREW,4,P=0 mm,L=11.8 mm
Tape,Security Tape,OPP,L900xW50x0.045mm M-00000560 7345511002 1
PE Foam Bag P-00000595 7841919921 1

Craft Foam(Left) P-00005955 78-D008901 1
Craft Foam(Right) P-00005956 78-D008902 1
Craft Box P-00008021 78-D012473 1
Panel Protector Film

Description

A-00002058

B-00005940

CB-00000544

CB-00004287

HW-00000553

HW-00006041

PL-00005958

32E1818013 1

27-D003115 1

32F2818004 1

32F3018003 1

42A9930008 2000

42A9940007 2000

73-D001222 1

Remark 1:
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

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

Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.

58

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

ViewSonic Model Number: VS10931

BOM LIST (VE920m-1)

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
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

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

14
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
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

25
26 A-00002059 32E1818018 Power Cord,SP-023+IS-14,Black,CEE,1800 mm,Green I E2M,K2M 32E1818016 1

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

31
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
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

56
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

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

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

HW-00004042 42-D000649

N/A 27-D003115

PJ0EAAS000(A2M)
PJ0EACS000(C2M)

N/A

A-00000458 32E1818015

A-00002058 32E1818013

A-00002057 32E1818060

N/A

HW-00005884 42-D001756

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

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

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

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

PJ0EAET000(E2M)
PJ0EAKU000(K2M)
PJ0EAW5000(W2M)

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

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
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

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

Power Code,UL,SVT#18/3C,LP-30B+LS-13,L=1830+/-50mm,Black,Linetek,18AWG,No
Bag,Green I
Power Cord,CCC,300/500V,0.75mm2,3C,PC-323+COC-01,L=1830+/­50mm,Black,Linetek,18AWG,No Bag,Green I

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

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,

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

Common 2

Common 1

A2M 32E1818019 1

C2M 32E1818021

K2M 32E1818020 1

Common 4

36X8633401, 36­D001185

4

1

1

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

59

BOM LIST (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
2 N/A
3 N/A
4 N/A
5 N/A
6 N/A
7 N/A
8 N/A

9 N/A
10 N/A
11 A-00002058
12 CB-00000544
13 CB-00004287
14 N/A
15 HW-00000553
16 HW-00006041
17 CB-00004034
18 HW-00004042
19 N/A
20 B-00005940
21 B-00005942
22 N/A
23 N/A
24 N/A
25 N/A
26 N/A
27 P-00000595
28 M-00000560
29 PL-00005958
30 HW-00005884
31 N/A
32 N/A
33 N/A
34 B-00004023
35 C-00004026
36 CB-00004035
37 N/A
38 N/A
39 N/A
40 N/A
41 N/A
42 N/A
43 N/A
44 C-00005847
45 C-00005944
46 C-00005945
47 P-00005955
48 P-00005956
49 N/A
50 DC-00008033
51 N/A
52 C-00008027
53 N/A
54 P-00008021
55 DC-00008032
56 DC-00008031

MJ0E501K01

7349951002
7344191017

36X8002971

L3J005XXXX

36-D001339
73-C000047
35-D002646
73-D002676

PJ0EACS000

32E1818013
32F2818004
32F3018003

PJ0EFT0Q06

42A9930008
42A9940007
32-D000557
42-D000649
41-D002610
27-D003115
35-D003765
44-D003904
41-D004053
10-D009090
10-D010801

PJ0EI1M300

7841919921
7345511002
73-D001222
42-D001756
78-D002030
77-D002070
42-D002091
35-D002998
40-D003812
32-D003899
73-D004605
73-D005094
77-D005180
77-D005193
77-D005191
78-D005895
78-D005934
40-D008680
40-D008678
40-D008677
78-D008901
78-D008902
79-D009027
76-D009873
78-D010933
40-D012371
77-D012475
78-D012473
77-D012470
77-D012469

19" Semi Product,19E5-L01,Default 1
Silicone 0.4
ACF,AC-4251FY-16,100M/RL,Green I 0.004
Driver IC,COF,Data,COF,M190E5-L01,Green I 10
19" Cr TN 8ms (Panel Base) 1
Driver IC,Scan,A170E1,Green II 4
ACF,COG,AC-8405Z-23 1.5mmX100M,100000 mmx1.5 mm,COG-ACF,Green I 0.003
PCBA for ,A190E3-H,A190E3-H-X,301-03,Rev.03,ODM,Green II 1
ACF,PCB,AC-9825R-35,100000 mmx1.5 mm,PCB-ACF,Green I 0.004
Olympic,19”,Accessory BOM,D-sub+Audio, 3 pin,Black,Power built-in;RoHS 1
Power Cord,PC-323+COC-01,Black,CCC,1830 mm,Green I 1
Accessory Cable,Audio,NONE,Black,Pins-Pins,Green I 1
Accessory Cable,D-Sub,BLACK,A150X2,Green I 1
Olympic,19"W,Function BOM,D-sub+Audio 1
SCREW,3,P=0.5 mm,L=4 mm,Pan Head,Green I 15
SCREW,4,P=0 mm,L=11.8 mm,Hexagon Stand Off,Socket,Green I 2
FFC,0.50x45x62xCx(5/5)x(0.175x0.3),45 Pins,Green I 2
SCREW,M4,P=0.7 mm,L=8 mm,Round Head,Green I 1
Cover AD Assy,A190E3,cover_ad+mylar,D_SUB/AUDIO,Green I 1
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
PCBA for ,A190E3,A190E3-T-S1,303-11,Rev.07,ODM,Green II 1
Backlight Unit,A190E3,Green I 1
Metal Frame Front Assy,A190E3,ASSY,SECC t0.6+mylar,Green I 1
Software (EDID_D-SUB),A190E3,Checksum(83),19 Analog Port,Green II 1
Software (BIOS),A190E3,19E3TSA004,Checksum(0x7BC5),MTV312 Analog+Audio,Green II 1
Olympic,19",ID BOM,D-sub+Audio,Black,Height adjustable model 1
Bag,570 mmx600 mmx0.13 mm,Green I 1
Tape,A170E1-H0P,900 mmx50 mmx0 mm 0.058
Panel Protector Film,A190E2-H06,mylar,400X325X0.1 MM,Green I 1
SCREW,M4,P=0.7 mm,L=15 mm,Round Head,Green I 4
Corner Protector,5mm,A170E1-H0M,50 mmx50 mmx1850 mm,Green I 0.083
SN Label for ,A170E1-H0M,75 mmx40 mm,Pallet Bar Code Label, A170E1-H0M,Green I 0.021
SCREW,M3,P=1.27 mm,L=12 mm,Pan Head,Green I 2
PCBA for ,A190E3,A190E3-T-K,303-02,Rev.31,Green II 1
Cover Hinge,A190E3-H0F,ABS PA-757N,BLACK C_J91A11B5,Green II 1
FFC,22 Pins,Green I 1
Isolated Tape,PET,384 mmx48 mmx0.05 mm,Green I 1
Tape,20 mmx20 mmx0.1 mm,Green I 1
Customer Label for ,A170E1-H0G,180 mmx100 mm,Green II 1
Customer Label for ,A170E1-H0G,15 mmx15 mm,Green II 1
Customer Label for ,A170E1-H0G,130 mmx80 mm,Green II 1
SeparatorA170E1-H0G,1130 mmx955 mmx11 mm,Green II 0.021
Pallet,A170E1-H0G,Wooden,N/A,1150 mmx970 mmx135 mm,Green II 0.021
Seat Assy,A170E1-H0P,ASSY,Black,Green II 1
Rear Assy,A190E3-H0M,ASSY,Black,Green II 1
Stand Assy,A190E3-H0M,ASSY,Black,Green II 1
Cushion,A190E3-H0M,EPS,White,460 mmx175 mmx210 mm,PS_Foam(Left),Green II 1
Cushion,A190E3-H0M,EPS,White,460 mmx175 mmx210 mm,PS_Foam(Right),Green II 1
Shipping Package Information for ,A190E3-H0M 1
MENU for A190E3-H0M,Green II 1
Warranty Card,A170E1-H0G,Green II 1
Bezel Assy,A190E3-H0M,ASSY,Black,Green II 1
SN Label for ,A190E3-H0M,50 mmx25 mm,VE920mb,Green II 1
Carton,A190E3-H0M,474 mmx184 mmx477 mm,VE920mb,Green II 1
Carton Label for ,A190E3-H0M,76.2 mmx76.2 mm,VE920mb,Green II 1
Safety Label for ,A190E3-H0M,120 mmx50 mm,VE920mb,Green II 1

60

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

8. Exploded Diagram and Exploded Parts List

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

61

ViewSonic Corporation

Model

Title

Date Rev:

EXPLODED PARTS LIST (VE920m-1)

ViewSonic Model Number: VS10931
Rev: 1a

Serial No. Prefix: Q7T

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

1 N/A

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

9 C-00004026 40-D003812 COVER HINGE 1

10 C-00005847

MJ0E501K01

42-D000314

42A9930013

40-D008680

ISM_A190E3_HAT 1

SCREW M4*15L 4

SEAT ASSY 1

EXPLODED PARTS LIST (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

2 C-00008027
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

9 C-00004026 40-D003812 COVER HINGE 1

10 C-00005847

MJ0E501K01

40-D012371

42-D000314

42A9930013

40-D008680

ISM_A190E3_HAT 1

BEZEL ASSY 1

SCREW M4*15L 4

SEAT ASSY 1

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

62

PACKING PART LIST (VE920m/mb-1 )

ViewSonic Model Number: VS10931
Rev: 1a

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

1 N/A VE920m
2 P-00000595
3 P-00005956
4 P-00005955
5 N/A Different region (refer to BOM) Carton 1
6 N/A Different region (refer to BOM)
7 CB-00004287
8 CB-00000544

9 N/A
10 N/A
11 N/A
12

N/A

Different region (refer to BOM) Menu (Quick Setup) 1
Different region (refer to BOM) Menu (CD-ROM) 1
Different region (refer to BOM) Warranty Registration Card 1

7841919921 PE Foam Bag 1
78-D008902 PS Foam (Right) 1
78-D008901 PS Foam (Left) 1

32F3018003 Monitor Cable 1
32F2818004 Audio Cable 1

N/A DVI Cable 1

LCD Monitor 1

Power Cord 1

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

63

ViewSonic Corporation

Model

Title

Date Rev:

Packing diagram

9. Block Diagram

D-sub

Analog Video

OSD Key Pad / Audio Out

Main Board

LDO

DC-5V

DC-12V

Speaker

3.3V

5V

LCD Module

12V

Signal

AC Power

Audio In

LIPS

Backlight

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

64

10. Schematic Diagrams

B7

SOURCE_SELECT

B9

INVERTER I/F

OSD

LED_OR
LED_GR

KEY_DOWN

KEY_UP

AUTO_ADJ

PWR_SW

AUDIO_ON

OPTION1

OPTION2

V33C

INV_ON/OFF

INV_ADJ

V5A

MENU

VOL1

V5

LED_OR
LED_GR
SOURCE_SELECT
MENU
KEY_DOWN
KEY_UP
AUTO_ADJ
PWR_SW

AUDIO_ON

OPTION1

OPTION2

VOL1

INV_ADJ

B1

OR0N
OR0P
OR1N
OR1P
OR2N
OR2P

OG0N
OG0P
OG1N
OG1P
OG2N
OG2P

OB0N
OB0P
OB1N
OB1P
OB2N
OB2P

OCLKP
OCLKN

ER0N
ER0P
ER1N
ER1P
ER2N
ER2P

EG0N
EG0P
EG1N
EG1P
EG2N
EG2P

EB0N
EB0P
EB1N
EB1P
EB2N
EB2P

ECLKP
ECLKN

ESTH

OSTH

STB
POL
STV
CKV

OE

GVON

GVOFF

DDC_CLK
DDC_DAT

V5A_ESD

B2

V5A

VGA_5V

DDC_CLK

V5A_ESD

B3

V5A_ESD

V5A

VGA

DVI

RIN

GNDR

GIN

GNDG

SOG

BIN

GNDBDDC_DAT
HSYNC
VSYNC

R+

G+

B+

CLK+

CLK-

R-

G-

B-

RIN
GNDR

GIN

GNDG
SOG
BIN
GNDB
HSYNC
VSYNC

R+
R­G+
G­B+
B­CLK+
CLK-

RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC

R+
R­G+
G­B+
B­CLK+
CLK-

V5A

B4

DDC_CLK
DDC_DAT
OPTION1
OPTION2
LED_OR
LED_GR
SOURCE_SELECT
MENU
KEY_DOWN
KEY_UP
AUTO_ADJ

V5A

INV_ON/OFF
DCDC_ON/OFF EB0N
PANEL_ON/OFF
VCM_PWM
XAO

PWR_SW
V5A

INV_ON/OFF
DCDC_ON/OFF
PANEL_ON/OFF
VCM_PWM
XAO

B5

VGA_5V

MCU

CSZ
SCL
SDA

HWRESET

INT
AD0
AD3AUDIO_ON
AD1
AD2

CSZ
SCL EG0P
SDA

HWRESET

INT
AD0
AD3
AD1
AD2

CSZ
SCL
SDA
HWRESET
INT
AD0
AD3
AD1
AD2

INV_ADJ
VOL1

SCALER

DCDC_ON/OFF

VGH

VGL

VAA

V5A

VGH

VGL

VAA
V5
V5A

PANEL_ON/OFF

VCM_PWM

VAA

POWER

DC/DC

GMA[1..14]

V33C

V18C

V33PV5A

VCM

V18C
V33C

B6

GMA[1..14]

VCM

V33P

V18C
V33C

OR0N
OR0P
OR1N
OR1P
OR2N
OR2P

OG0N
OG0P
OG1N
OG1P
OG2N
OG2P

OB0N
OB0P
OB1N
OB1P
OB2N
OB2P

OCLKP
OCLKN

ER0N
ER0P
ER1N
ER1P
ER2N
ER2P

EG0N

EG1N
EG1P
EG2N
EG2P

EB0P
EB1N
EB1P
EB2N
EB2P

ECLKP
ECLKN

ESTH
OSTH

STB
POL
STV
CKV
OE
GVON
GVOFF

B10

PANEL_INTERFACE

OR0N
OR0P
OR1N
OR1P
OR2N
OR2P

OG0N
OG0P
OG1N
OG1P
OG2N
OG2P

OB0N
OB0P
OB1N
OB1P
OB2N
OB2P

OCLKP
OCLKN

ER0N
ER0P
ER1N
ER1P
ER2N
ER2P

EG0N
EG0P
EG1N
EG1P
EG2N
EG2P

EB0N
EB0P
EB1N
EB1P
EB2N
EB2P

ECLKP
ECLKN

ESTH
OSTH

STB
POL
STV
CKV
OE
GVON
GVOFF

GMA[1..14]

XAO

VGH

VGL

VAA

VCM

V33P

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

65

ViewSonic Corporation

Model

Title

Date Rev:

TOP

D34D34

2

3

1

CP36CP36

V5A

VAA

VGH

VGL

CP22CP22

GND_POWER

CP25CP25

QP18QP18

3 2

1

32

RP19RP19

RP15RP15

QP17QP17

1

CP1CP1

GND_POWER

CP28CP28

RP31RP31

RP12RP12

RP20RP20

VAA

RP16RP16

GND_POWER

D3D3

2

CP4CP4

CP2CP2

V5

V5

FP1FP1

1 2

V5A

GND_POWER

3

1

CP17+CP17

+

CP3CP3

LP3LP3

32

RP7RP7

QP2QP2

1

CP15CP15

DP1DP1

1 2

1

3

2

GND_POWER

D2D2

CP16CP16

CP13CP13

CP11CP11

RP14RP14

GND_POWER

QP13QP13

1

12

ZDP6ZDP6

32

RP8RP8

CP6CP6

RP48RP48

VGLVGH

CP9CP9

VAA

RP49RP49

CP14CP14

GND_POWER

V5A

V5A1V5A1

1

TP

VAA1VAA1

1

TP

VGH1VGH1

1

TP

VGL1VGL1

1

TP

V5A

VAA

VGH

VGL

DCDC_ON/OFF

DCDC_ON/OFF

GND_POWER

32

1

(High --> Enable)

GND_POWER

V5A

CP10CP10

GND_POWER

12

4

BR/CTL

OUT

5

CP18CP18

GND_POWER

1

3

2

UP1UP1

IN-

SCP

VCC

OSC7FB

GND

8

6

RP32RP32

QP4QP4

RP11RP11

RP3RP3

RP1RP1

GND_POWER

LP4LP4

[INV_GND]

LP5LP5

LP6LP6

GND_POWER

RP51RP51 CP40CP40

GND_POWER

4

3

2

OUT

VCC

OSC

GND

6

5

CP39CP39

RP52RP52

66

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

CP37CP37

1

SCP

FB7IN-

8

RP6RP6

RP37RP37

CP21CP21

GND_POWER GND_POWER

UP2UP2

CE

CP38CP38

RR1RR1

RP50RP50

RP53RP53

CP19CP19

CP20CP20

GND_POWER

ViewSonic Corporation

RP54RP54

Model

GND_POWER

Title

Date Rev:

DC

CON1CON1

RGB GND

HSYNC
VSYNC

SYNC GND

DDC SCL

DDC SDA

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

clk shield

+5V

HPD

R
G

V5A_ESD

V5A_ESD

25
26
27

B

29
28
8

R5R5

15
6

R6R6

7
14
16

11
3

R7R7

1

V5A

2

V5A

D7D7

19
22

DAT0+

DAT0-

DAT1+

DAT1-

DAT2+

DAT2-

DAT3+

DAT3-

DAT4+

DAT4-

DAT5+

DAT5-

clk+

clk-

V5A V5A_ESD

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

GND_POWER

R213R213

D4D4

1 2

D9D9

32

1

C31C31 C32C32

D5D5

1 2

R13R13

D10D10

32

1

D8D8

VCC

VCLK

SCL

SDA

D13D13

32

3

8
7
6
5

R16R16

C35C35

R11R11

R12R12

R17R17

R18R18

D14D14

32

1

C36C36

1

D15D15

32

U2U2

1 2

R14R14

D11D11

32

1

C33C33

1

NC

2

NC

3

NC

4

GND

GND_POWER

R15R15

32

C34C34

D12D12

1

C163C163

GND_POWER

R19R19

D16D16

32

1

C37C37

R9R9

R20R20

C38C38

R10R10

R+
R­G+
G­B+
B­CLK+
CLK-

1

D17D17

C39C39

GND_POWER

GND_POWER

67

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

ViewSonic Corporation

Model

Title

Date Rev:

DVI INTERFACE

CN2CN2

1
2
3
4
5
6
7
8

V5

GND_INV

R198R198

C162C162 R200R200

Q19Q19

1

2 3

V33C

R199R199

INV_ON/OFF

R195R195

C30C30

GND_POWER

R196R196

Q18Q18

1

2 3

GND_POWER

R197R197

V33C

V33C

INV_ADJ

ViewSonic Corporation

Model

Title

Date Rev:

INVERTER I/F

68

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

1 2

GND_POWER

D18D18

R25R25

DDC_CLK
DDC_DAT

INT

VCM_PWM

C43C43

ZDP7ZDP7

SDA1
SCL1

C41C41

1 2

GND_POWER

R26R26
R27R27

V5A

Avoid entering the
self-test mode of the
MCU.

C45C45

R35R35

C42C42

C46C46

Y2Y2

C47C47

GND_POWER

R24R24

LED

V5A

U3U3

11

X2

12

X1

7

RST

29

HSCL/P3.0/RX

28

HSDA/P3.1/TX

19

P3.2/INT0

13

ISDA/P3.4/T0

14

ISCL/P3.5/T1

36

VBLANK/P4.0

37

HBLANK/P4.1

15

STOUT/P4.2

43

HSYNC

44

VSYNC

35

DA7/HCLAMP

39

HLFHO/DA8

38

HALFV/DA9

5

NC

6

NC

MTV312M

AUDIO_ON

R193R193

R43R43

R45R45

R49R49

VCPU

V5A

1

4

8

VDD

AD2/P6.2/HLFHI

VSS

10

GND_POWER

OPTION1
OPTION2

INV_ON/OFF

XAO

Q6Q6

2 3

GND_POWER

VDD3

DA0/P5.0
DA1/P5.1
DA2/P5.2
DA3/P5.3
DA4/P5.4
DA5/P5.5
DA6/P5.6

AD0/P6.0
AD1/P6.1

AD3/P6.3
DA10/P6.4
DA11/P6.5
DA12/P6.6
DA13/P6.7

R22R22

17

P1.0

18

P1.1

20

P1.2

21

P1.3

22

P1.4

23

P1.5

24

P1.6

25

P1.7

3
2
1
42
41
40
34

27
26
16
9
30
31
32
33

DCDC_ON/OFF

C49C49

03/08/04

5V_ON/OFF

C40C40

GND_POWER

V5A

R51R51

R50R50

R52R52

GND_POWER

C171C171

R218R218

R139R139

AD0
AD1
AD2
AD3

V5A

R33R33 R34R34

R37R37

GND_POWER

Q7Q7

1

2 3

GND_POWER

R140R140

R29R29

R28R28

GND_POWER

PANEL_ON/OFF

(PANEL POWER CONTROL)

C50C50

R219R219

LED

C44C44

GND_POWER

DDC_DAT
DDC_CLK

GND_POWER

VCPU

R23R23

V5A

R32R32

R36R36

GND_POWER

MENU
KEY_DOWN
KEY_UP
SOURCE_SELECT
AUTO_ADJ
PWR_SW
LED_GR
LED_OR

CN8CN8

1
2
3
4

V5A

SCL1

SDA1

R44R44

R46R46

R47R47

R48R48

C172C172

VCPU

SDA

SCL

CSZ
HWRESET

D19D19

12

GND_POWER

Q3Q3

3 2

U4U4

8

VCC

7

WP

6

SCL

SDA5GND

ViewSonic Corporation

Model

32

Q1Q1

1

R31R31

Q2Q2

1

2 3

1

R42R42

GND_POWER

A0

A1

A2

VGA_5V

R30R30

5V_ON/OFF

V5A

L8L8

10/20

V5A

1

C48C48

2

3

4

GND_POWER

69

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

Title

MCU

Date Rev:

LED_OR

Q14Q14

V5A

V5A

R53R53

RP46RP46

RP47RP47

4 5

3 6

2 7

4 5

3 6

2 7

1 8

1 8

R54R54

CN3CN3

22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

V5A

R179R179

MENU
KEY_DOWN
KEY_UP
SOURCE_SELECT
AUTO_ADJ

PWR_SW
AUDIO_ON
VOL1

OPTION1
OPTION2

Q15Q15

1

LED_G
LED_O

LP11LP11

LP9LP9

LP10LP10

45
36
27
18
45
36
27
18
45
36
27
18

CP33CP33

453627

18

453627

CP34CP34

18

AUD_R

AUD_L

32

1

3 2

R181R181

LED_O

LED_GR

Q16Q16

GND_POWER

V5A

R182R182

Q17Q17

1

32

1

3 2

R184R184

LED_G

J1J1

L20L20

L23L23

AUD_G1AUD_G1

1

L22L22

C167C167

L21L21

L24L24

C168C168

C169C169

R214R214

C170C170

R215R215

R216R216

R217R217

AUD_L

AUD_R1AUD_R1

1

1

AUD_L1AUD_L1

AUD_R

ViewSonic Corporation

GND_AUD

GND_AUD GND_AUD

Model

Title

OSD INTERFACE

Date Rev:

70

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

V33P

VGH

VGL

VCM

VAA

VAA

VGL

VCM

V33B

L9L9

L10L10

L11L11

C53C53

GND_POWER

L12L12

C55C55

GND_POWER

L13L13

C57C57

L14L14

C62C62

U5U5

4

NC

5

CD

VSS

VDD

OUT

3

2

1 2

1

V33B

R60R60

GND_POWER

XAO

XAO

C51C51

GND_POWER

C52C52

GND_POWER

C54C54

PANEL_VGL

C56C56

C58C58

C63C63

VSD

VGD

VGH_PVGH

C59C59

C64C64

GND_POWER

VSA

GVOFF

C60C60

GVON

VGH_P

VGD

GVON

GVOFF

VCOM

C61C61

GND_POWER

(3-STEP)

R55R55

R57R57

GND_POWER

R59R59

GND_POWER

R58R58

6

5

A_D

B_G

A_G

A_S1B_D

2

4

B_S

3

1

GND_POWER

Q9Q9

XAO
OE

Q8Q8

32

R56R56

ZD1ZD1

PANEL_VGH

1 2

CKV

STV

OSTH

OB2P
OB2N
OB1P
OB1N
OB0P
OB0N

OCLKN
OCLKP

OG2P
OG2N
OG1P
OG1N
OG0P
OG0N

OR1P
OR1N

OR0P
OR0N

ESTH
EB2P
EB2N
EB1P
EB1N
EB0P
EB0N

ECLKN

ECLKP

GMA1
GMA2
GMA3
GMA4
GMA5
GMA6
GMA7

GMA8

GMA9
GMA10
GMA11
GMA12
GMA13
GMA14

EG2P
EG2N
EG1P
EG1N
EG0P
EG0N

ER2P
ER2N
ER1P
ER1N
ER0P
ER0N

POL
STB

OR2P
OR2N

XAO
OE
CKV

STV
VGD

PANEL_VGL

PANEL_VGH

VCOM

OSTH

OB2P
OB2N
OB1P
OB1N
OB0P
OB0N

POL
STB

OCLKN
OCLKP

OG2P
OG2N
OG1P
OG1N
OG0P
OG0N

OR2P
OR2N
OR1P
OR1N
OR0P
OR0N

GND_POWER

VSD

VCOM
ESTH
EB2P
EB2N
EB1P
EB1N
EB0P
EB0N

ECLKN
ECLKP

GMA1
GMA2
GMA3
GMA4
GMA5
GMA6
GMA7

VSA

GMA8
GMA9
GMA10
GMA11
GMA12
GMA13
GMA14

EG2P
EG2N
EG1P
EG1N
EG0P
EG0N

ER2P
ER2N
ER1P
ER1N
ER0P
ER0N

GND_POWER

CN4CN4

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

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

ViewSonic Corporation

VSD

VSA

VCOM

VGD

PANEL_VGH

PANEL_VGL

STB

POL

ESTH

OSTH

STV

CKV

OE

GVON

GVOFF

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

VSD1VSD1

VSA1VSA1

VCOM1VCOM1

VGD1VGD1

P_VGH1P_VGH1

P_VGL1P_VGL1

STB1STB1

POL1POL1

ESTH1ESTH1

OSTH1OSTH1

STV1STV1

CKV1CKV1

OE1OE1

GVON1GVON1

GVOFF1GVOFF1

Model

Title

PANEL I/F

71

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

Date Rev:

R75R75

R80R80

GND_POWER

VPREF

VPREF1VPREF1

VPREF

1

R61R61

R64R64

R65R65

R66R66

R67R67

R70R70

VS3

R71R71

R72R72

VS4

R73R73

R74R74

VS5

R201R201

R202R202

VS6

R203R203

R204R204

VS7

R76R76

R79R79

R81R81

R82R82

VS8

R83R83

R86R86

VS9

R87R87

R88R88

VS10

R89R89

R90R90

VS11

R91R91

R92R92

VS12

R93R93

R205R205

VS13

R206R206

R207R207

VS14

R208R208

GND_POWER

GMA1VS1

GMA1

1

GMA1GMA1

GMA2VS2

GMA2

1

GMA2GMA2

GMA3

GMA3

1

GMA3GMA3

GMA4

GMA4

1

GMA4GMA4

GMA5

GMA5

1

GMA5GMA5

GMA6

GMA6

1

GMA6GMA6

GMA7

GMA7

1

GMA7GMA7

VCN

1

VCN1VCN1

GMA8

GMA8

1

GMA8GMA8

GMA9

GMA9

1

GMA9GMA9

GMA10

GMA10

1

GMA10GMA10

GMA11

GMA11

1

GMA11GMA11

GMA12

GMA12

1

GMA12GMA12

GMA13

GMA13

1

GMA13GMA13

GMA14

GMA14

1

GMA14GMA14

V5A

PANEL_ON/OFF

V5A

L15L15

C70C70

L16L16

C78C78

PP11PP11

L17L17

D20D20

1 2

V33A

R97R97

R98R98

C106C106

PP12PP12

D21D21

1 2

32

1

U6U6

Vin

GND_POWER

U8U8

3

C91C91

Vout

GND

2

VOUT2VIN
VOUT

GND

1

GND_POWER

C100C100

1

4

3

C92C92

C105C105

GND_POWER

3

C71C71

C79C79

R96R96

QP19QP19

C72C72

C80C80

U10U10

VOUT2VIN
VOUT

GND

1

GND_POWER

1

32 Q10Q10

V33A1V33A1

TP

1

V33C1V33C1

1

4

V33A

(PANEL VCC)

V33A

C73C73

TP

V33C

C81C81

C93C93

C103C103

V33C

(SCALER VCC)

V18V1V18V1

TP

1

V18C

(SCALER Core VCC)

C94C94

(Panel VCC)

C104C104

V18C

V33P

VOP1VOP1

VAA

L18L18

1

VOPVAA

C110C110

GND_POWER

U13U13

3

VOUT2VIN

4

VOUT

GND

1

C111C111

9.99V

VPREF

R104R104

C112C112

R108R108

VCM_PWM

VCM_PWM

V5A

32

1

GND_POWER

R99R99

R106R106

Q11Q11

GND_POWER

VOP

VSCM

C115C115

72

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

84

3

+

+

2

-

-

GND_POWER

VCM1VCM1

U12U12

3

VOUT2VIN

4

VOUT

U14A

U14A

GND

1

1

VSCM_ADJ

1

R101R101

C108C108

GND_POWER

R102R102

C109C109

VCM

R103R103

VCM

R100R100

VSCN

R107R107

GND_POWER

5

6

VOPVPREF

U14B

U14B

84

+

+

-

-

GND_POWER

C107C107

7

VSCN_OUT

GND_POWER

R105R105

GND_POWER GND_POWER

VCN

C113C113

C114C114

ViewSonic Corporation

Model

Title

Date Rev:

POWER

INV_ADJ

RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC

R+
R­G+
G­B+
B­CLK+
CLK-

CSZ
SCL

SDA
HWRESET
INT
AD0
AD3
AD1
AD2

R1R1

VDVI

GND_POWER

GND_POWER

VDPLLVPLLVAD VPO VDDVDVI

55

35

45

51

65

U1U1

AVDD

RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC

R+
R­G+
G­B+
B­CLK+

CLK-

C6C6

C11C11

CSZ
SCL
SDA

HWRESET

INT
AD0
AD3
AD1
AD2

Y1Y1

C23C23

C24C24

R2R2

R3R3

V33C

63
62
60
59
61
58
57
37
38

40
41
43
44
46
47
49
50
52

66

67

69
71
70
32
72
30
31
77
78

73
74

33

34

3
2

6

AVDD

RIN0
RIN0M
GIN0
GIN0M
SOGIN0
BIN0
BIN0M
HSYNC0
VSYNC0

R+
R­G+
G­B+
B­CK+
CK­REXT

REFP

REFM

ALE/CSZ
RDZ/SCL
WRZ/SDA
HWRESETZ
INT
AD0/GPO6
AD3/GPO5
AD1/EINV
AD2/OINV

PWM0
PWM1

XIN

XOUT

BYPASS
AVSS_LPLL

BUSTYPE

AVSS56AVSS_MPLL

64

AVSS

53

AVDD_DVI

AVDD_DVI

AVDD_PLL

AVDD_MPLL

AVSS_DVI

AVSS_PLL54AVSS_DVI42GNDP10GNDP20GNDP85GNDP95GNDP

AVSS

39

36

68

104

VDDP11VDDP21VDDP84VDDP94VDDP

AVSS_DVI

48

114

126

VDDP

VDDP

VDDC18VDDC87VDDC97VDDC

DDC1_DAT/GPO7

DDC1_CLK/GPO8

GNDP

GNDP

115

127

105

117

NC

NC
RA1P
RA1N
RA2P
RA2N
RA3P
RA3N

GA1P
GA1N
GA2P
GA2N
GA3P
GA3N

BA1P
BA1N
BA2P
BA2N
BA3P
BA3N

CLKAP
CLKAN

RB1P
RB1N
RB2P
RB2N
RB3P
RB3N

NC
GB1P
GB1N
GB2P
GB2N
GB3P
GB3N

NC

NC
BB1P
BB1N
BB2P
BB2N
BB3P
BB3N

CLKBP
CLKBN

ESP

OSP

GPO0
GPO1
GPO2
GPO3
GPO4

GNDC19GNDC86GNDC

GNDC

96

116

106
107
108
109
110
111
112
113

98
99
100
101
102
103

88
89
90
91
92
93
118
119

16
17
22
23
24
25

7
8
9
12
13
14
15
122
123
124
125
128
1
4
5
120
121

75
76

83
82
81
80
79
28
29

OR2P
OR2N
OR1P
OR1N
OR0P
OR0N

OG2P
OG2N
OG1P
OG1N
OG0P
OG0N

OB2P
OB2N
OB1P
OB1N
OB0P
OB0N
OCLKP
OCLKN

ER2P
ER2N
ER1P
ER1N
ER0P
ER0N

EG2P
EG2N
EG1P
EG1N
EG0P
EG0N

EB2P
EB2N
EB1P
EB1N
EB0P
EB0N
ECLKP
ECLKN

ESTH
OSTH

GVON1
STB
STV
CKV
OE
POL1
GVOFF

OR2P
OR2N
OR1P
OR1N
OR0P
OR0N

OG2P
OG2N
OG1P
OG1N
OG0P
OG0N

OB2P
OB2N
OB1P
OB1N
OB0P
OB0N
OCLKP
OCLKN

ER2P
ER2N
ER1P
ER1N
ER0P
ER0N

EG2P
EG2N
EG1P
EG1N
EG0P
EG0N

EB2P
EB2N
EB1P
EB1N
EB0P
EB0N
ECLKP
ECLKN

ESTH
OSTH

STB
STV
CKV
OE

GVOFF

R185R185

R186R186

R187R187

R188R188

POL

GVON

GVON

POL

V33C VAD

L1L1

L2L2

V33C VDVI

L3L3

V33C

L4L4

C1C1

VPLLV33C

D1D1

GND_POWER

VDPLL

C12C12

C2C2

GND_POWER

C4C4

C3C3

C5C5

GND_POWER

C7C7

C13C13

C8C8

C9C9C22C22

C10C10

GND_POWER

V33C

VDDV18C

L6L6

VOL_ADJ1VOL_ADJ1

1

峙

R209R209

32

Q20Q20

1

GND_POWER

R212R212

R210R210

R211R211

1

GND_POWER

V5A

VOL1VOL1

C165+C165

+

V5A

C164C164

VOL1

C166C166

R138R138

V18C

73

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

C25C25

V33C

GND_POWER

L5L5

VPO

C16C16

C14C14

C15C15

C17C17

GND_POWER

C19C19

C20C20

C18C18

C21C21

ViewSonic Corporation

C26C26

C27C27

GND_POWER

C28C28

C29C29

Model

Title

SCALER

Date Rev:

DDC_DAT

R109R109

11

12

13

14

15

CN7CN7

1
6
2
7
3
8
4
9
5
10

R117R117

R118R118

C120C120

C121C121

R119R119

C122C122

R111R111

R113R113

R115R115

R116R116

R110R110

R112R112

R114R114

C119C119

C116C116

C117C117

C118C118

RIN

GIN

BIN

SOG

D22D22

GND_POWER

D23D23

CLK_DDC

DAT_DDC

GND_POWER

VSI

R122R122

DDC_CLK

1

D32D32

1 2

GND_POWER

D33D33

1 2

GND_POWER

R130R130

R131R131

R120R120

R121R121

32

D24D24

C157C157

1

GND_POWER

R124R124

32

D25D25

R127R127

1

C158C158

R126R126

R129R129

GND_POWER GND_POWER

32

D26D26

V5A_ESD GND_POWER

V5A_ESD

C159C159

Most of Customers Recommended.

R125R125

C126C126

GND_POWERGND_POWER

R128R128

C127C127

HSYNC

VSYNC

DDC_CLK

DDC_DAT

R123R123

12/15/2003

C123C123

C124C124

C125C125

HSYNC1HSYNC1

VSYNC1VSYNC1

TP

TP

VGA_5V

GNDR

GNDG

GNDB

HSYNC

1

VSYNC

1

VGA_5V

V5A

1

3

VGA_5V

D28D28

D29D29

12/15/2003

1 2

1 2

GND_POWER

D27D27

1 2

L19L19

03/08/04

C129C129

D30D30

1 2

U15U15

1

NC

2

NC

3

NC
GND4SDA

GND_POWER

R133R133

03/08/04

VGA_5V

VCC

VCLK

SCL

8
7
6
5

74

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

2

R136R136

D31D31

(0603/100)

V5A

R137R137

R134R134

R135R135

GND_POWER

C128C128

GND_POWER

ViewSonic Corporation

Model

Title

Date Rev:

VGA

11. PCB Layout Diagrams

ViewSonic Corporation

Model

Title

Date Rev:

75

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

TOP

ViewSonic Corporation

Model

76

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

Title

Date Rev:

BOT

ViewSonic Corporation

Model

77

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

Title

Date Rev:

TMSK

ViewSonic Corporation

Model

78

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

Title

Date Rev:

BMSK

ViewSonic Corporation

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79

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

Title

Date Rev:

TPATE

ViewSonic Corporation

Model

80

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

Title

Date Rev:

TSLK

ViewSonic Corporation

Model

81

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

Title

Date Rev:

DRL

* 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])

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82