ViewSonic VE1920wmb-2, VS10866 Service manual

Service Manual

ViewSonic VE1920wmb-2

Model No. VS10866

19” Color TFT LCD Display

(VA1920wmb-2_SM Rev. 1a 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 8/23/2006 Initial Release Jamie Chang

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TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 3

3. Front Panel Function Control Description 7

4. Circuit Description 11

5. Adjustment Procedure 12

6. Troubleshooting Flow Chart 32

7. Recommended Spare Parts List 40

8. Exploded Diagram and Exploded Parts List 42

9. Block Diagram 44

10. Schematic Diagrams 45

11. PCB Layout Diagrams 53

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1. Precautions and Safety Notices

1.1. Appropriate Operation

(1) Turn off t he pr od uct bef ore cl eani n g.
(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 connectin g or disconnecting input connector.
(3) Wipe off water drops immediately. Long contact with water may cause discoloration or spots.
(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 consideratio n 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 or UL1950).

Do not connect the CCFL to a Hazardous Voltage Circuit

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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 .

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

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

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

That may cause “ MURA“.

That could scratch the surface of panel

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2. Specification

Introduction

FEATURES VE1920wm/wmb
Size 19” wide
Luminance (Typ, cd/㎡) 300 cd/㎡

Contrast Ratio (Typ) 500:1

TFTLCD PANEL

Input Signal

Sync Compatibility

Compatibility

Power Voltage AC 100-240V, 50/60Hz Yes
Power Consumption
Audio Amplifier / Speaker 1.5 W / 2.5W x 2

Ergonomics

OSD Control [; X] [ 1 ] [▼] [▲] [ 2 ] [ ] Yes

Dimension

Weight

Operating Condition

Storage Condition

Regulation

Colors ( 6 bit + 2 bit FRC) 16.2 M colors
Response Time (Typ) 8 ms
Viewing Angle (H/V) 150 ° / 130 °
Recommend resolution 1440 x 900@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) 36W(max) / 32W(typ)
Active Off Mode (Max) 1W

Tilt ( 20 ° to -5 °) Yes
Swivel No
Pivot No
Height Adjust 0-100mm

Physical (W x H x D mm)

Package (W x H x D mm)

451 x 426 x 221 (mm)

17.8 x 16.8 x 8.7 (in)
492 x478 x186 (mm)

19.3 x 18.8 x 7.3 (in))

Physical (Net kg/lb) 5.1 kg ( 11.2 lb)
Package (Gross Kg/lb) 6.6 kg ( 14.5 lb)
Temperature ( / )℉℃ 41℉-95 /℉ +5℃-+35℃
Humidity (%) 20 % - 80 %
Temperature ( / )℉℃ -4℉-131 /℉ -20℃-55℃
Humidity (%) 20 % - 85 %

CB / TCO03 / UL/cUL / FCC-B / ICES 003 / Argentina-TUV/S / NOM / EPA
Energy Star / TUV/Ergo / ISO13406-2 / TUV/GS / CE / GOST-R / SASO / BSMI
/ PSB / C-Tick / Korea (MIC) / CCC

GENERAL specification

Test Resolution & Frequency 1440 x 900 @ 60Hz
Test Image Size Full Size

Contrast and Brightness Controls

3

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

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*) , 80 0 x 60 0, 832 x 624,
1024 x 768, 1152 x 864, 1280 x 768, 1280 x 96 0, 1280 x 1024, 1440 x
900

* 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-D003247
Input Voltage Range 90 to 264 VAC
Input Frequency Range 47 to 63 Hertz
Short Circuit Protection OUTPUT CAN BE SHORTED WITHOUT DAMAGE
Over Current Protection FUSE 3.15A TYPICAL AT 250 VAC
Leakage Current 75 MA (MAX) AT 240VAC / 50HZ
Efficiency 80 % TYPICAL AT 100VAC @60HZ
Fuse INTERNAL AND NOT USER REPLACEABLE
Power Dissipation 32W(typ)
Max Input AC C ur rent 1.6 ARM S @ nominal RANGE
Inrush Current (Cold St art ) 80 A @ 240VAC , 50HZ

SHALL START AND FUNCTION PROPERLY WHEN UNDER

Power Supply Cold Start

Power Supply Transient Immunity

Power Supply Line Surge Immunity

Power Supply Missing Cycle Immunity

Power Supply Acoustics The power supply shall not produce audible noise that would be

FULL LOAD, WITH ALL COMBINATIONS OF INPUT VOLTAGE,
INPUT FREQUENCY, AND OPERATING TEMPERATURE
SHALL BE ABLE TO WITHSTAND AN EN61000-4-4 ±2KV
TRANSIENT TEST WITH NO DAMAGE
Shall be able to withstand ±2KV (L-L) and ±2.3KV (L-PE) with no
damage
Shall be able to function properly, without reset or visible screen
artifacts, when ½ cycle of AC power is randomly missing at nominal
input

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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

US Type Power Cable

European Type Power Cable

CCC Type Power Cable

PSE Type Power Cable

Power Saving Operation (Method) VESA DPMS Signaling
Power Consumption
Recovery Time ON Mode = N/A, ACTIVE OFF < 5 sec

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
Separate 2-prong NEMA 1-15P type plug. Length = 1.8m. Connects
to display.
Color = Black

ON Mode < 36 W (max) / 32 W (typ)
ACTIVE OFF < 1 W

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.

Timing Table

Item Timing Analog Digital

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

30 – 82 kHz
50 – 85* Hz.

9 720 x 400 @ 70Hz, 31.5kHz Yes Yes
10 800 x 600 @ 56Hz, 35.1kHz Yes Yes
11 800 x 600 @ 60Hz, 37.9kHz Yes Yes
12 800 x 600 @ 75Hz, 46.9kHz Yes Yes
13 800 x 600 @ 72Hz, 48.1kHz Yes Yes
14 800 x 600 @ 85Hz, 53.7kHz Yes Yes
15 832 x 624 @ 75Hz, 49.7kHz Yes Yes
16 1024 x 768 @ 60Hz, 48.4kHz Yes Yes
17 1024 x 768 @ 70Hz, 56.5kHz Yes Yes
18 1024 x 768 @ 72Hz, 58.1kHz Yes Yes

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19 1024 x 768 @ 75Hz, 60.0kHz Yes Yes
20 1024 x 768 @ 85Hz, 68.67kHz Yes Yes
21 1152 x 864@ 75Hz, 67.5kHz Yes Yes
22 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes
23 1280 x 1024 @ 75Hz, 79.97kHz Yes No
24 1280x 768 @ 60Hz, 47.78kHz Yes Yes
25 1280 x 960 @60Hz, 60kHz Yes Yes
26 1440 x 900 @ 60Hz, 55.96kHz Yes Yes

*The image vertical size might not be full screen.

Primary Presets
1440 x 900 @ 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 – Act ive Off

Dark = Soft Power Switch OFF
Front Panel Controls (Head)
[;X] [ 1 ] [▼] [▲] [ 2 ] [

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

Short Cuts Function from the button(s)

[1] Main Menu
[2] Input toggle (Analog or Digital)

[▼] or [▲]

[▼] + [▲] Recall both of Contrast and Brightness to default

[1] + [2] Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode

]

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

[

] Power
[ 1 ] BUTTON 1
[ 2 ] Button 2
[▲] UP ARROW BUTTON

[▼] DOWN ARROW BUTTON
[; X] Audio Mute on/off

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

[1] + [▼] + [▲] White Balance. (Not shown on user ’s guide)

[1] + [▼] Power Lock
[1] + [▲] OSD Lock

[;X] 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*
Contrast/Brightness*

1

2*4

Input Select

Analog, Digital

Audio Adjust

Vol ume*

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

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 b a ck "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

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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 Setting s or Input Priority

Resolution Notice Ac tions

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 di sabl ed 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

AUDIO INTERFACE (SPEAKER SPECIFICATION)

Line input connection
Line input signal 1 Vrms
Line input impedance 20k ohms
Maximum power output (Elec t ri c)
Signal to Noise Ratio 72 dB
Frequency response 300 TO 20KHZ
Distortion 8%@1kHz

3.5 mm stereo jack

1.5W / CH

There should be no audible vibration with volume at 100%. (Input

Vibration

Screen image

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

Audio DPMS

signal within 1 Vrms)

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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OSD Table

Layer 1 Layer 2 Layer 3

Auto Image Adjust

Contrast/Brightness

Input Select

Audio adjust

Color Adjust

Information

Contrast (+ / -)
Brightness (+ / -)
Analog
Digital
Volume (+, -)
Mute
sRGB
9300K
6500K
5400K
5000K

User Color

Horizontal Size + / -

On/Off

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

Manual Image Adjust

Setup Menu

H/V Position

Fine Tune + / ­Sharpness + / -

Language Select

Resolution Notice On/Off
Input Priority On/Off

OSD Position

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

English
French
German
Spanish
Italian
Finnish
Japanese
Simplified Chinese
Traditional Chinese

H Position (+ / -)

V Position (+ / -)
OSD Time Out 5/15/3 0/60
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, an integrated DVI receiver, 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 spread­spectrum 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
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.

for the digital

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5. Adjustment Procedure

A. Function Test and Alignment Procedu re

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
2
3
4
5
6
7
8

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

Mstar ISP Tool User Manual

Setp1:

Take the cable of Print Port to connect Print Port of PC and Print Port of fixture(and EDID burn in the same fixture) to connect
VGA Cable between D-sub of fixture and D-sub of AD Board of monitor，the monitor must be turned on the power。

Step 2 :

Open ISP Tool

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Step 3 :

Press ”connect” into ISP mode，display the model of Flash，The dialog of figure is displayed “Device Type is Pm25LV512”
then press ”確定”。

Step 4:

Press ”Read” then enter as below figure，then press

If down load BIOS that is successful as below figure then press”確定”。

to down load the program of BIOS (*.bin)。

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Step 5 :

Press ”Auto” into below figure that display the value of BIOS Checksum below figure is displayed “0x1626” then press ”Run”
to execute the BIOS procedure。

The BIOS procedure is displayed the message ”Verify OK” that the BIOS procedure is successful。

Step 6 :

Press ”Dis Con” then leave the mode of ISP。

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Step 7：

When select ”ReConnect” and press “Run” then repeat to connect the mode of ISP into next the action of BIOS procedure

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Monitor Assembly and Disassembly
1 Separate Stand Assy

1.1 Remove Seat Assy

Step 1 :

Press Stand Assy’s bottom part in
Seat Hinge

Step 2:

Remove Seat Assy

1.2 Separate Stand Assy

Step 1 :

Loose and Remove 2 screws

Step 2 :

Remove Stand Assy

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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 :

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Completed

3 Remove Power Board and AD Board

3.1 Remove Metal Cover

Step 1 :

Remove FFC from OSD Board.

Step 2 :

Loose and remove 4 screws.

Step 3 :

Lift up LCD module and remove bezel.

Step 4 :

Remove 2 pieces of Backlight wires.

Step 5 :

Remove 2 pieces of Backlight wires.

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Step 6 :

Loose and remove 4 screws.

Step 7 :

Loose and remove 2 screws.

Step 8 :

Loose and remove 4 screws.

Step 9 :

Remove the PCBA Cover

3.2 Remove Power Board and AD Board

Step 1 :

Loose and remove 4 screws.

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Step 2 :

Remove Lips Board

Step 3 :

Remove 2 pieces of FFCs.

Step 4 :

Remove the FFC.

Step 5 :

Loose and remove 4 screws.

Step 6 :

Remove AD PCBA.

Step7 :

Completed.

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4 Change New AD Board and Power Board

Step 1 :

Place new AD Board.
And fasten 4 fixed screws.

Step 2 :

Fasten 4 fixed screws.

Step 3 :

Insert FFC.

Step 4 :

Insert 2 pieces of FFCs .

Step 5 :

Insert new Lips Board.

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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

5 Remove OSD Board

Step 6 :

Fasten 4 fixed screws.

Step 7 :Completed.

Step 1 :

Separate both Audio Cable.

Step 2 :

Take OSD Board apart.

Step 3:

Completed.

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6 Change New OSD Board

Step 1 :

Place New OSD Board.

Step 2 :

Insert Audio cable to connectors of
New OSD Board.

Step 3:

Completed.

7 Add Cover to AD PCB Heatsink

Step 1 :

Join the PCB Cover.

Step 2 :

Fasten 4 fixed screws.

Step 3 :

Fasten 2 fixed screws

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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

Step 4 :

Fasten 4 fixed screws.

Step 5 :

Insert 2 pieces of Backlight wires.

Step 6 :

Insert 2 pieces of Backlight. wires.

Step 7 :

Join LCD module and remove bezel.

Step 8 :

Fasten 4 fixed screws.

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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

Step 9 :

Insert FFC.

Step 10 :

Completed.

8 Rear Cover Assy Assembly

Step 1 :

Place Rear Cover

Step 2 :

Fasten 2 screws

Step 3 :

Remove Cover Hinge

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9 Stand Assy Assembly

Step 1:

Place Seat Assy

Step 2 :

Fasten 4 screws

Step 3:

Join Seat Assy

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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

Packing For Shipping And Disassembly Procedure

Packing For Shipping

1. 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)

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 1

Figure 2

Figure 3

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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

Figure 4

6. Troubleshooting Flow Chart

Defect Mode Failure Analysis Repair Testing

Light On Test

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

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

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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

TEST

Completed

Defect Mode Failure Analysis Repair Testing

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

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

Check Panel

Panel Change

Display Wave

Check PCBA

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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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

A

p

A

A

A

A

Failure Analysis Repair Testing

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

B

Display White

Out

Check PCB

AD/B Change

Power/B Change

Booting Delay

Brightness

Even

Abnormal

Check PCB

Check PCB

Inverter/B Change

OSD/B Change

Power/B Change

Beat Display

No Backlight

Check Panel

Inverter/B Change

Panel Change

Check Adapter

Adapter Change

No signal

AD/B Change

R.G.B

Display

Abnormal

Check PCB

CNT/B Change

Gray Scale

Display

bnormal

Check Wire

Check Panel

VGA cable

DVI cable

Panel Change

Next Ste

NG

TEST

C

34

Completed

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

Defect Mode Failure Analysis Repair Testing

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

C

Horizontal

Line Defect

Vertical

Weak Line

Horizontal

Weak Line

Check PCBA

AD/B Change

Vertical

Band Defect

Check Panel

Panel Change

Horizontal

Band Defect

Power Saving

Display

Abnormal

Check PCBA

AD/B Change

AD/B Change

Peculiar Smell

Check PCBA

Power/B Change

Inverter/B Change

Next Step

NG

TEST

Complete

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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

r

g

g

p

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

No Power

Turn Off

Check PCBA

Check PCBA

Abnormal

CNT/B Change

Inverter/B

OSD/B Change

Check Wire

Check Wire

Check Adapter

OSD Cable

AC Power Change

DC Power CNT

Cable Chan

Adapter Change

e

LED Display

Abnormal

LED Off

LED Dark

Check PCBA

AD/B Change

Power/B Change

Inverter/B

OSD/B Change

LED Abnormal

LED Loss

LED Flicke

Check Wire

OSD Cable

DC Power CNT

Cable Chan

Adapter Change

e

NG

Next Ste

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TEST

Completed

Defect Mode Failure Analysis Repair Testing

Abnormal BIOS

&OSD

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

OSD Key

Unavailable

OSD Can’t

Input

OSD Can’t

Check PCB

AD/B Change

CNT/B Change

Power/B Change

Inverter/B

Abnormal

Louds

peaker

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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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

Next Step

NG

TEST

Completed

A

p

Defect Mode Failure Analysis Repair Testing

Other Abnormal

Display

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

Display Shut

Down

Check PCB

AD/B Change

Power/B Change

CNT/B Change

Check Panel

Panel Change

Display Flicker

((tapping )

Check PCBA

AD/B Change

CNT/B Change

Check Panel

Panel Change

DVI Signal

Display

Check PCB

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

Next Ste

NG

TEST

Complete

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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.

z No image

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

supply of power.

z No Signal Input

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

z “Out of Range”

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

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

z Fuzzy Image

 Adjust Phase.

z Image too bright

 Adjust brightness and contrast by OSD.

z Image too dark

 Adjust brightness and contrast by OSD.

z Irregular image

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

z Distorted image

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

z Image is not centered

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

z Size is not appropriate

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

z Uneven color

 Use OSD Color Menu to adjust color setting.

z Color too dark

 Use OSD Color Menu to adjust color setting.

z Dark area distorted

 Use OSD Color Menu to adjust color setting.

z White color is not white

 Use OSD Color Menu to adjust color setting.

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7. Recommended Spare Parts List

ViewSonic Model Number: VS10866

RECOMMENDED SPARE PARTS LIST (VE1920wmb-2)

Serial No. Prefix: QCB Rev: 1a

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

1

Accessories:

2 Audio Board (Rev.02) B-00005600 35-D005166 1

PC Board Assembly:

3 Audio Control Board (Rev.04) B-00005705 35-D005062 1
4 Power Supply Board (Ver:0F)Lips with Audio B-00008008 27-D007836 1
5

Cabinets:

6 Seat Assy Black C-00005847 40-D008680 1
7 Front Panel (Bazel) C-00006042 40-D010962 1
8 Back Cover C-00006043 40-D008950 1
9 Base Assembly C-00006044 40-D008951 1

10

Cables:

11 DVI Cable, S/L, 1.8M, W/2F CB-00002083 32F0000004 1
12 Accessory Cable, D-Sub CB-00004287 32F3018003 1
13 Flat Cable (FFC L=108.5) CB-00004288 32-D004533 1
14 Flat Cable (FFCX816,36) CB-00005742 32-D005773 2
15

Documentation:

16 Carton Label 76.2 mmx76.2 mm DC-00008035 77-D011986 1
17 CD-ROM (Menu) DC-00008036 76-D011994 1
18

Hardware:

19 SCREW,3,P=0.5 mm,L=4 mm HW-00000553 42A9930008 4
20 SCREW,M3,P=1.27 mm,L=12 mm HW-00000556 42A9990005 2
21 SCREW,M4,P=0.7 mm,L=8 mm HW-00004042 42-D000649 1
22 SCREW,M4,P=0.7 mm,L=15 mm HW-00005884 42-D001756 4
23 SCREW,4,P=0 mm,L=11.8 mm HW-00006041 42A9940007 4
24

Miscellaneous:
Packing Material:

25
26 Foam(Right) P-00006049 78-D009100 1
27 Foam(Left) P-00006050 78-D009098 1
28 Generic Foam Set P-00001347 30833
29 Generic Box P-00002515 20653
30 Craft Box P-00008028 78-D011984 1
31

Plastics:

Description

Power Cord A-00002058 32E1818013 1

Cover Hinge C-00004284 40-D004250 1

Audio Cable, A150X2,18AWG, 180cm CB-00000544 32F2818004 1

Safety Label, 120 mmx50 mm DC-00006045 77-D010603 1

SCREW,3,P=0.5 mm,L=4 mm HW-00000553 42A9930008 16

Tape, 900 mmx50 mmx0 mm M-00000560 7345511002 0.058
PE Bag

Panel Cover (Panel Protector Film) PL-00006048 73-D005900 1

P-00000595

7841919921 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.

40

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

ViewSonic Model Number: VS10866

y

I

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I

y

I

y

I

I

p

I

g

I

gg

(

I

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)

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BOM LIST (VE1920wmb-2)

Rev: 1a

Serial No. Prefix: QCB

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

1 HW-00000553

2 HW-00006041

3 N/A

4 HW-00004042
5 B-00005705 35-D005062
6 CB-00005742 32-D005773

7 N/A

8 N/A

9 B-00008008

10 N/A 36X8636401

11 N/A
12 N/A L3J009XXX8
13 N/A L3J009X4BI

14 N/A

15 N/A

16 N/A
17 N/A 73-D008216
18 N/A 73-D002676

19 N/A
20 N/A 7349951002

21 HW-00000553
22 HW-00000556 42A9990005
23 CB-00004288 32-D004533
24 B-00005600 35-D005166
25 C-00006043 40-D008950
26 C-00006042 40-D010962

27 HW-00005884
28 C-00004284 40-D004250
29 C-00006044 40-D008951

30 N/A
31 PL-00006048 73-D005900
32 DC-00006045 77-D010603
33 HW-00002076 7841595111

34 N/A

35 P-00000595
36 DC-00000586 7741999141
37 M-00000560 7345511002
38 N/A 77-D000114
39 N/A 77-D000118

40 N/A
41 C-00005847 40-D008680

42 P-00006049
43 N/A 79-D009099

44 P-00006050

45 N/A

46 N/A

47 DC-00008035

48 P-00008028

49 DC-00008036

50 N/A

51 N/A

52 N/A
53 CB-00000544 32F2818004
54 CB-00002083 32F0000004

55 A-00002058
56 CB-00004287 32F3018003

42A9930008

42A9940007

41-D000643

42-D000649

41-D007621

44-D007620

27-D007836

73-C000047

74-D000461

74-D000462

36-D007589

35-D007815

42A9930008

42-D001756

77-D001323

7841996911

7841919921

78-D000801

78-D009100

78-D009098

78-D010933

77-D011988

77-D011986

78-D011984

76-D011994

10-D011883

10-D012406

10-D012434

32E1818013

SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka Motogawa/Shin
Yee/Hama Naka Shoukin/Shiho/Sh
SCREW, 4, P=0 mm, L=11.8 mm, Hexagon Stand Off, Socket, Hama Naka Motogawa/Shiho/Shin
Yee/Sh

e Ching, Green
Metal Frame Front, M190A1-L01/A190A2/M190A1-L03, SECC 0.6t, Kunshan Jincheng_Base
Ass

/Wai Gin/Jiin Ming, 19"wide, Green
SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips Cross Recess, plate color Zn,
Screw with Washer, Sh
PCBA for , A190A2-A02-H, A190A2-A02-H-S1, 1206-03, Rev.04, USI/ITC, ODM, Green I
FFC, FFCX816, 36 Pins, Tennsure,
Cover AD Assy, A190A2, SECC, Jiin Ming/Kunshan Jincheng_Base Assy, Left_Side 4 connector,
Green II
Backlight Unit, a190a2, CLT_BL/Kenmos/Forhouse,
Hi

n&Low Voltage into the same connector, Green I
Lips With Audio, DAC-19M008 AF, 0F, 5 V/3 A, 13.8 V0.7 A, I TYPE, 7 mA, 1710 V, Delta
Don

uan LIPS, Green II
Driver IC, COG, Scan, HX8636APD400
ACF, COG, AC-8405Z-23 1.5mmX100M, 100000 mmx1.5 mm, Hitachi Chemical, COG-ACF,
Green I
19" wide PS TN Asahi 0.7mm
19" wide PS TN Asahi 0.7mm
Polarizer, CF, Degree 135, 415.84 mmx262.15 mmx0.215 mm, LPT-HL56T-12AGA1SU, M190A1,
O

timax, Green
Polarizer, TFT, Degree 135, 414 mmx259.7 mmx0.215 mm, LPT-HL56T-12SU, M190A1, Optimax,
Green I
Driver IC, COF, Data, A190A2-A02-H, HX8018-A060CBAK, 6 bit, 432Channel, Himax, Green II

ACF, COF, AC-4255U-16, 200000 mmx1.2 mm, Hitachi Chemical, Green I
ACF, PCB, AC-9825R-35, 100000 mmx1.5 mm, Hitachi Chemical, PCB-ACF, Green
PCBA for , A190A2-A02-H, A190A2-A02-H-X, 1206-05, Rev.02, ITC/USI/WUS_PCBA, ODM,
Green II
Silicone, TORAY/-9187L, 330
SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka Motogawa/Shin
Yee/Hama Naka Shoukin/Shiho/Sh
SCREW, M3, P=1.27 mm, L=12 mm, Pan Head, Philli
FFC, A190A2-H05, 15 Pins, Tennsure/Youn
PCBA for , A190A2-H, A190A2-H-K3, 106-02, Rev.02, USI/ITC, ODM, Green I
Rear Ass

, A190A2-H0C, ASSY, Black, Fuking, Green I

Bezel Ass

, A190A2-H0C, ABS PA-757-J01, BLACK, Fuking, Dual, VSC, 1st, Green I
SCREW, M4, P=0.7 mm, L=15 mm, Round Head, Phillips Cross Recess, Zn(Black),
Screw with Washer, Hama Naka Moto

e, A190A2-H05, ABS PA757N, Black(J91A11B5), Fuking, Green

Cover Hin
Stand Ass

, A190A2-H0C, ASSY, Black, Cherng Jyieh, Green I
Customer Label for , A170E1-H0G, 15 mmx15 mm, Chang Huang, QC Pass Label_VSC_for China,
Green I
Panel Protector Film, A190A2-H05, XG-536 T=0.1, With
Safet

Label for , A190A2-H0C, 120 mmx50 mm, Chang Huang, VSC_VE1920wmb, Green I
Corner Protector,
Separator, (AA), A190E2-H04, 1200 mmx1050 mmx11 mm, Shanghai Zhung Hao/Hua Sun Paper,
ACER, Non Green
Bag, 570 mmx600 mmx0.13 mm, Huang Jyii/Taiwan Hon Chuan/Suzhuo Hon Chuan, Default,
Green I
Module Label, A190E2-H03, 75 mm, 40 mm, Non Gree
Ta

e, A170E1-H0P, 900 mmx50 mmx0 mm, Symbio, OP
Customer Label for , A170E1-H0G, 180 mmx100 mm, Chan
Customer Label, A170E1-H0G, 130 mm, 80 mm, Green
Pallet, N150X6, Wooden, KD-HT, 1200 mmx1000 mmx135 mm, Shanghai Hang Wei/Ming Li/Hua
Sun Pa

er, Green I
Seat Ass
Cushion, A190A2-H0C, EPS, White, 464 mmx180 mmx220 mm, Telung, PS_Foam(Right), Green II

Shi

Package Information for , A190A2-H0C, Viewsoni

Cushion, A190A2-H0C, EPS, White, 464 mmx180 mmx220 mm, Telung, PS_Foam(Left), Green II

Warranty Card, A170E1-H0G, 143 mmx210 mm, Yi Ching/Car Tong Kunshan, VSC_VA712 Ver.2,
Green II
SN Label for , A190A2-H0C, 50 mmx25 mm, Chang Huang/Kunshan Hwakuan,
VSC VE1920wmb-2 for China, Green I
Carton Label for , A190A2-H0C, 76.2 mmx76.2 mm, Chang Huang/Kunshan Hwakuan,
VSC VA1920wmb-2, Green I
Carton, A190A2-H0C, 492 mmx186 mmx478 mm, Chen Yi Paper, VSC_VE1920wmb-2 5ms,
Green II
MENU for A190A2-H0C, Complex, 1C, Yi Ching/Car Tong Kunshan, VSC_VE1920wmb-2 CD­ROM, Green II
Software (BIOS), A190A2, 19A2LS1000, VSC, Checksum(0x8A47), VSC 19W TSUM,
DUAL+AUDIO/Analo
Software (EDID_D-SUB), A190A2, VSC501EAb0, VSC, Checksum(XX), VSC 19W Analog Port,
Green II
Software (EDID_DVI), A190A2, VSC501EDb0, VSC, Checksum(XX), VSC 19W Digital Port,
Green II
Accessor
Accessor
Power Cord, CCC, 300/500V, 0.75mm2, 3C, PC-323+COC-01, L=1830+/-50mm, Black, Linetek,
18AWG, No Ba
Accessor

er, 50 mmx50 mmx1850 mm, Green I

, A170E1-H0P, ASSY, Black, Cherng Jyieh, Green I

+Audio for 5ms Panel, Green I

Cable, Audio, NONE, Black, Pins-Pins, Green
Cable, DVI, Black, Jceprocable, DVI-D(M) TO DVI-D(M), S/L, W/2F, Green

, Green I

Cable, D-Sub, BLACK, Jceprocable, A150X2, Green

e Ching, Green

e Ching/Hama Naka Motogawa, head D8, Green

ackage AL_Foil, Green

TSMC), 300Channel, Himax, Green

lass Resin BM (Panel Base
lass Resin BM+5ms LC (Sheet Base

e Ching, Green

awa/Shye Ching, Green

s Cross Recess, Green

Shin, L=108.5, Green

Print, Just Enter, Green I

Huang, VSC_on Carton, Green

16

4

1

1
1

2
1

1

1
3

0.00168
1

0.08333
1

1

10

0.0022

0.0044
1

0.4
4
2

1
1
1
1

4
1

1
1
1

1

0.083

0.021

1

0.021

0.058
1
1

0.021
1
1
1
1

1

1

1

1

1

1

1

1
1

1
1
1

41

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

8. Exploded Diagram and Exploded Parts List

EXPLODED PARTS LIST (VE1920wmb-2)

ViewSonic Model Number: VS10866
Rev: 1a

Item ViewSonic P/N Reference P/N Description Q'ty

1 N/A
2 E-00005747
3 N/A 41-D004053 BACKLIGHT FRONT COVER 1
4 HW-00000553 42A9930008 SCREW M3*4L 2
5 B-00006039 27-D003247 POWER PCB ASSY 1
6
7 HW-00000553 42A9930008 SCREW M3*4L 7
8 N/A 41-D002610 AD COVER 1

9 C-00006042 40-D010962 BEZEL ASSY 1
10 C-00006043 40-D008950 REAR ASSY 1
11 HW-00004042 42-D000649 SCREW D3*8L 4
12 C-00006044 40-D008951 STAND ASSY 1
13 C-00004284 40-D004250 COVER HINGE 1
14 C-00005847 40-D008680 SEAT ASSY 1

B-00005705

44-D003904

MJ0A10AK01

35-D005062 AD PCB ASSY 1

BACKLIGHT ASSY 1

PANEL ASSY 1

ViewSonic Corporation

Model

Title

Date Rev:

Exploded chart

42

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

PACKING PART LIST ( VE1920wmb-2 )

ViewSonic Model Number: VS10866
Rev: 1a

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

1 N/A VE1920wmb
2 P-00000595
3 P-00006049
4 P-00006050
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)
Different region (refer to BOM) Menu (CD-ROM)
Different region (refer to BOM) Warranty Registration Card

7841919921 PE Foam Bag
78-D009100 PS Foam (Right)
78-D009098 PS Foam (Left)

32F3018003 Monitor Cable
32F2818004 Audio Cable

N/A DVI Cable

LCD Monitor

Power Cord

1
1
1
1

1
1
1
1
1
1
1

43

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

ViewSonic Corporation

Model

Title

Date Rev:

Packing Exploded chart

9. Block Diagram

DVI-D

Digital Video

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

44

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

10. Schematic Diagrams

B1

OSD

B2

INVERTER I/F

LED_OR

LED_GL

TURBO

MENU

LEFT

RIGHT

AUTO

POWER

V33C

AUDIOR-

AUDIOR+

AUDIOL-

AUDIOL+

AUDIOL+

AUDIOL-

AUDIOR+

AUDIOR-

AUD_DET

VOL_ADJ

AUDIO_ON

LED_GL

AUDIOR-

AUDIOR+

AUDIOL-

AUDIOL+

AUD_DET

VOL_ADJ

LED_OR
LED_GL

TURBO

MENU
LEFT
RIGHT
AUTO
POWER

V5A_ESD

VGA_5V

DVI_5V

V5A

B3

V5A

VGA_5V

V5A_ESD

B4

V5A_ESD

V5A

DVI_5V

B5

V5A

DVI_5V

VGA_5V

POWER

VGA

DVI

V33C

V33C

DSUB_DET

DDCA_DAT
DDCA_CLK

GNDR

GNDG

GNDB
HSYNC
VSYNC

DDCD_CLK
DDCD_DAT

CLK+

CLK-

VCTRL

Vref

V18C

V33P

B6

DSUB_DET

SOG

RIN

GIN

BIN

R+

R-

G+

G-

B+

B-

Vref

V33P V33P

V18C

SOG
DDCA_DAT
DDCA_CLK

RIN
GNDR

GIN
GNDG

BIN
GNDB
HSYNC
VSYNC

DDCD_CLK
DDCD_DAT

R+
R­G+
G­B+
B­CLK+
CLK-

AUDIO_ON

INV_ON/OFF

DCDC_ON/OFF

PANEL_ON/OFF

VCM_PWM

VOL_ADJ
INV_ADJ
AUD_DET

V12A

DSUB_DET
SOG
DDCA_DAT
DDCA_CLK
RIN
GNDR
GIN
GNDG
BIN
GNDB
HSYNC
VSYNC

DDCD_CLK
DDCD_DAT
R+
R­G+
G­B+
B­CLK+
CLK-

LED_OR
LED_GL
TURBO
MENU
LEFT
RIGHT
AUTO
POWER

AUDIO_ON
INV_ON/OFF
DCDC_ON/OFF
PANEL_ON/OFF
VCM_PWM
VOL_ADJ
INV_ADJ
AUD_DET

DVI_5V

VCTRL

V12A
V18C
V33C
Vref
V5A

SCALER

BR2N
BR2P
BR1N
BR1P
BR0N
BR0P

BG2N
BG2P
BG1N
BG1P
BG0N
BG0P

BB2N
BB2P
BB1N
BB1P
BB0N
BB0P

FR2N
FR2P
FR1N
FR1P
FR0N
FR0P

FG2N
FG2P
FG1N
FG1P
FG0N
FG0P

FB2N
FB2P
FB1N
FB1P
FB0N
FB0P

FCKN
FCKP
FSTH

BCKN
BCKP
BSTH

STB
POL

CPV
STV

GVOFF

OE

BR2N
BR2P
BR1N
BR1P
BR0N
BR0P

BG2N
BG2P
BG1N
BG1P
BG0N
BG0P

BB2N
BB2P
BB1N
BB1P
BB0N
BB0P

FR2N
FR2P
FR1N
FR1P
FR0N
FR0P

FG2N
FG2P
FG1N
FG1P
FG0N
FG0P

FB2N
FB2P
FB1N
FB1P
FB0N
FB0P

FCKN
FCKP
FSTH

BCKN
BCKP
BSTH

STB
POL

CPV
STV
OE

GVOFF

VCM_PWM
PANEL_ON/OFF

DCDC_ON/OFF

V12A

V5A

B8

PANEL_INTERFACE

BR2N
BR2P
BR1N
BR1P
BR0N
BR0P

BG2N
BG2P
BG1N
BG1P
BG0N
BG0P

BB2N
BB2P
BB1N
BB1P
BB0N
BB0P

FR2N
FR2P
FR1N
FR1P
FR0N
FR0P

FG2N
FG2P
FG1N
FG1P
FG0N
FG0P

FB2N
FB2P
FB1N
FB1P
FB0N
FB0P

FCKN
FCKP
FSTH

BCKN
BCKP
BSTH

STB
POL

CPV
STV
OE

GVOFF

VCM_PWM
PANEL_ON/OFF

DCDC_ON/OFF

V12A

V33P

V5A

V5A

V33C

V12A

INV_ON/OFF

INV_ADJ

V12A

INV_ON/OFF

INV_ADJ

45

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

ViewSonic Corporation

Model

Title

Date Rev:

SYSTEM DIAGRAM

DDCA_DAT
DDCA_CLK

DDCD_DAT
DDCD_CLK

C80

C80

1206/10u/16V/X/PbF

1206/10u/16V/X/PbF

V5A

0603/100n/25V/7

0603/100n/25V/7

R116

R116

0603/10K/5%

0603/10K/5%

GND

RIN

GNDR

GIN

GNDG

SOG

BIN

GNDB
HSYNC
VSYNC

R+
R­G+
G­B+
B-

CLK+

CLK-

R124 0603/390R/1%R124 0603/390R/1%

AVDD

0603/100n/25V/7

0603/100n/25V/7

U2

U2

8

SDO

VDD

WP

7

CE#

HOLD#

WP

3

WP#

SCK

VSS4SDI

Pm25LV512

Pm25LV512

C94 0603/22p/50V/NC94 0603/22p/50V/N

C93 0603/22p/50V/NC93 0603/22p/50V/N

GND

VCC33

R118 R0603/OPENR118 R0603/OPEN
R119 R0603/OPENR119 R0603/OPEN

need to modify, the SAR is
6 bits and the max voltage
is 1.8V

C90

C90

VCC33

GND

RIN

GNDR

GIN

GNDG

SOG

BIN
GNDB
HSYNC
VSYNC

DDCA_DAT
DDCA_CLK

R+

R-

G+

G-

B+

B-

CLK+

CLK-

DDCD_DAT
DDCD_CLK

C91

C91

2
1
6
5

Y1

Y1

14.31818MHz

14.31818MHz

R114

R114

R115

R115

0603/10K/5%

0603/10K/5%

GND

U1

U1

59

RIN0P

58

RIN0N

56

GIN0P

55

GIN0N

57

SOGIN0

54

BIN0P

53

BIN0N

63

HSYNC0

64

VSYNC0

65

DDCA_SDA/RS232_Tx

66

DDCA_SCL/RS232_Rx

39

RX2P

40

RX2N

42

RX1P

43

RX1N

45

RX0P

46

RX0N

48

RXCKP

49

RXCKN

36

DDCD_SDA

37

DDCD_SCL

51

REXT

62

REFP

61

REFM

70

SDO

71

SCZ

72

SCK

73

SDI

19

RST

32

XIN

33

XOUT

102

MODE[0]

104

MODE[1]

0603/10K/5%

0603/10K/5%

C68

C68

0603/100n/25V/7

0603/100n/25V/7

44

50

34

4

GND

AVDD_DVI

AVDD_DVI

AVDD_MPLL

52

60

AVDD_PLL

AVDD_ADC

AVDD_MPLL

TSUM57AK

TSUM57AK

GND41GND

GND38GND96GND

GND

47

13

GND

67

14

103

115

VDDP

VDDP

VDDP95VDDP

VDDP

CLKBP/LVBCKP/LCK_ODD

116

VDDCVDPPAVDDVPLLVDVI VMPLL

C92

C92
0603/100n/25V/7

68

117

GND

VCTRL

VDDC

NC/LVACKP/NC
NC/LVACKM/NC

VDD_OTP

RA1P/LVA2P/RA2

RA1N/LVA2M/RA3

RA2P/LVA1P/RA4

RA2N/LVA1M/RA5

RA3P/LVA0P/RA6

RA3N/LVA0M/RA7

GA1P/NC/GA2
GA1N/NC/GA3

GA2P/NC/GA4

GA2N/NC/GA5
GA3P/LVA3P/GA6
GA3N/LVA3M/GA7

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

RB1P/NC/RB2

RB1N/NC/RB3

RB2P/NC/RB4

RB2N/NC/RB5

RB3P/NC/RB6

RB3N/NC/RB7

GB1P/NC/GB2

GB1N/NC/GB3

GB2P/NC/GB4

GB2N/NC/GB5

GB3P/NC/GB6

GB3N/NC/GB7

NC/LVB2P/NC
NC/LVB2M/NC

BB1P/LVB1P/BB2

BB1N/LVB1M/BB3

BB2P/LVB0P/BB4

BB2N/LVB0M/BB5

BB3P/NC/BB6
BB3N/NC/BB7

GPIO_P22
GPIO_P23
GPIO_P03

GPIO_P16/PWM2
GPIO_P15/PWM0
PWM2/GPIO_P24
GPIO_P27/PWM1

GPIO_P12

PWM1/GPIO_P25

GPIO_P00/SAR1
GPIO_P01/SAR2
GPIO_P02/SAR3

GPIO_P06
GPIO_P07

PWM0/GPIO_P26

GPIO_P13
GPIO_P14

DDCROM_SCL
DDCROM_SDA

0603/100n/25V/7

GPO0
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6

RSTN

12

97

VDDC

VDDC

CLKAP/LVB3P/LHSYNC
CLKAN/LVB3M/LVSYNC

CLKBN/LVBCKM/LDE

ESP
OSP

11
107

108

FB0N

109

FB0P

110

FB1N

111

FB1P

112

FB2N

113

FB2P

114

FG0N

98

FG0P

99

FG1N

100

FG1P

101

FG2N

105

FG2P

106

FR0N

89

FR0P

90

FR1N

91

FR1P

92

FR2N

93

FR2P

94

BB0N

9

BB0P

10

BB1N

15

BB1P

16

BB2N

17

BB2P

18

BG0N

2

BG0P

3

BG1N

5

BG1P

6

BG2N

7

BG2P

8

FCKP

118

FCKN

119

BCKP

120

BCKN

121
122
123

BR0N

124

BR0P

125

BR1N

126

BR1P

127

BR2N

128

BR2P

1

BSTH

80

FSTH

81

GVOFF

88

STB

87

STV

86

CPV

85

OE

84
83

POL

82
75

74
26

R103 0603/100R/5%R103 0603/100R/5%

35

R104 0603/100R/5%R104 0603/100R/5%

69
78
79

20
21

22

SAR1

23

SAR2

24
25

27
28
29

R105 0603/100R/5%R105 0603/100R/5%

30
31

77
76

GPO51 GPO51

1

TP

AUDIO_ON

VCM_PWM
PANEL_ON/OFF

INV_ON/OFF
INV_ADJ

R110 0603/100R/5%R110 0603/100R/5%
R117 0603/100R/5%R117 0603/100R/5%
R121 0603/100R/5%R121 0603/100R/5%

LED_GL

LED_OR

VCC33

R107

R107

R106

R106

0603/10K/5%

0603/10K/5%

VCTRL

FB0N
FB0P
FB1N
FB1P
FB2N
FB2P

FG0N
FG0P
FG1N
FG1P
FG2N
FG2P

FR0N
FR0P
FR1N
FR1P
FR2N
FR2P

BB0N
BB0P
BB1N
BB1P
BB2N
BB2P

BG0N
BG0P
BG1N
BG1P
BG2N
BG2P

FCKP
FCKN
BCKP
BCKN

BR0N
BR0P
BR1N
BR1P
BR2N
BR2P

BSTH

VCC33

FSTH
GVOFF
STB
STV
CPV
OE

R111

R111

POL

0603/10K/5%

0603/10K/5%

R79

R79

DVI

0603/20K/1%/OPEN

0603/20K/1%/OPEN

GND

LED_GL
LED_OR
VOL_ADJ

0603/10K/5%

0603/10K/5%

R1000603/100R/5%R1000603/100R/5%

R101 0603/100R/5%R101 0603/100R/5%

VCC33

R122

R122

0603/10K/5%/open

0603/10K/5%/open

AUD_DET

DSUB

MENU
LEFT
RIGHT

AT24C16AN-10SU-2.7/RoHS

AT24C16AN-10SU-2.7/RoHS

VCC33

R113

R113

0603/10K/5%

0603/10K/5%

R209OPEN/R0603 R209OPEN/R0603

AUTO
POWER

GND

TURBO

C81

C81
0603/100n/25V/7

0603/100n/25V/7

V33C

8

VCC

7

WP

6

SCL
SDA5GND

V12A

V5A

R210

R210

0603/30K/5%

0603/30K/5%

U7

U7

A0
A1
A2

VCC33

L10L10

1 2

1206/10u/16V/X/PbF

1206/10u/16V/X/PbF

L11L11

1 2

1206/10u/16V/X/PbF

1206/10u/16V/X/PbF

L12 HCB2012KF-420T40L12 HCB2012KF-420T40

1 2

1206/10u/16V/X/PbF

1206/10u/16V/X/PbF

L13L13

1 2

1206/10u/16V/X/PbF

1206/10u/16V/X/PbF

L14L14

1 2

C78

C78

1206/10u/16V/X/PbF

1206/10u/16V/X/PbF

V5A

R112

R112

0603/10K/5%/OPEN

0603/10K/5%/OPEN

R120 0603/10K/5%R120 0603/10K/5%

C88 0603/100n/25V/7C88 0603/100n/25V/7

GND

1
2
3
4

C55

C55

GND

C65

C65

GND

C74

C74

GND

VPLL

C76

C76

Close to respective power Pins

GND

AVDD

GND

Close to respective power Pins

R108

R108

0603/10K/5%

0603/10K/5%

R102

R102
0603/4.7K/0.1%/RoHS

0603/4.7K/0.1%/RoHS

C56

C56
0603/100n/25V/7

0603/100n/25V/7

Close to respective power Pins

VDVI

C66

C66
0603/100n/25V/7

0603/100n/25V/7

C67

C67
0603/100n/25V/7

0603/100n/25V/7

Close to respective power Pins

VMPLL

C75

C75
0603/100n/25V/7

0603/100n/25V/7

1

VMPLL1 VMPLL1

TP

Close to respective power Pins

VPLL1 VPLL1

1

TP

C77

C77
0603/100n/25V/7

0603/100n/25V/7

AVDD1 AVDD1

1

TP

C79

C79
0603/100n/25V/7

0603/100n/25V/7

DVI

DSUB

VCC33

R109

R109

0603/10K/5%

0603/10K/5%

DCDC_ON/OFF

Q7

Q7

1

MMBT3904-F

MMBT3904-F

2 3

GND

C57

C57
0603/100n/25V/7

0603/100n/25V/7

VDVI1TPVDVI1

1

TP

TP

V18C

0603/0R/5%/open

0603/0R/5%/open

R214

R214

0603/0R/5%/open

0603/0R/5%/open

R213

R213

DCDC_ON/OFF

C89

C89
0603/100n/25V/7

0603/100n/25V/7

VCC18

C58

C58
0603/100n/25V/7

0603/100n/25V/7

L17L17

1 2

DVI_5V

DSUB_DET

C59

C59
0603/100n/25V/7

0603/100n/25V/7

C84

C84
1206/4.7u/16V/Y

1206/4.7u/16V/Y

Close to respective power Pins

GND

VDPP

C60

C60
0603/100n/25V/7

0603/100n/25V/7

C85

C85
0603/100n/25V/7

0603/100n/25V/7

VDPP1 VDPP1

1

TP

C86

C86
0603/100n/25V/7

0603/100n/25V/7

VDDC

C87

C87
0603/100n/25V/7

0603/100n/25V/7

1

VDDC1 VDDC1

TP

RIGHT

POWER

AUTO

LEFT

MENU

TURBO

RIGHT
+LEFT
+POWER

VOLTAGEPIN

1.77V

1.24V

0.47V

1.77V

1.24V

0.47V

SR1(1.77) SR2(0.93)

C152

C152

0805/10u/6.3V/5/open

0805/10u/6.3V/5/open

GND

SAR1

1

SAR11 SAR11

TP

R200

R200

0603/10M/5%/RoHS/OPEN

0603/10M/5%/RoHS/OPEN

GND

VCC33

R127

R127
0603/20K/1%/OPEN

0603/20K/1%/OPEN

R128

R128

0603/23.2K/1%/OPEN

0603/23.2K/1%/OPEN

R67

R67

0603/12.1K/1%/OPEN

0603/12.1K/1%/OPEN

R134

R134

0603/3.3K/1%/OPEN

0603/3.3K/1%/OPEN

LEFT

MENU

TURBO

0805/10u/6.3V/5/open

0805/10u/6.3V/5/open

SAR21 SAR21

0603/10M/5%/RoHS/OPEN

0603/10M/5%/RoHS/OPEN

VCC33

C150

C150

GND

SAR2SAR2

1

TP

R201

R201

GND

46

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

R137

R137
0603/20K/1%/OPEN

0603/20K/1%/OPEN

R138

R138

0603/23.2K/1%/OPEN

0603/23.2K/1%/OPEN

R139

R139

0603/12.1K/1%/OPEN

0603/12.1K/1%/OPEN

R140

R140

0603/3.3K/1%/OPEN

0603/3.3K/1%/OPEN

RIGHT

POWER

AUTO

GND

C70

0603/10n/25V/7/RoHS

0603/10n/25V/7/RoHS

C70

GND

U5

U5

4

NC

5

CD

RN5VD40AA/RoHS

RN5VD40AA/RoHS

VSS
VDD
OUT

3

GND

2
1

WP

VCC33

Vref

R212

R212
0603/1K/5%

0603/1K/5%

ViewSonic Corporation

Model

Title

Date Rev:

SCALER

16
15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

CN4

CN4

Header2X8FR2.54

Header2X8FR2.54

GND_INV

AUD_DET

C7

C7

0603/1u/10V/Y/open

0603/1u/10V/Y/open

UWT1E101MCL1GS/RoHS

UWT1E101MCL1GS/RoHS

AUD_DET

Q1

Q1

2N7002/RoHS

2N7002/RoHS

+

+

CP1

CP1

1206/10u/16V/5/RoHS

1206/10u/16V/5/RoHS

AUD_Shutdown

0603/1K/5%/RoHS

0603/1K/5%/RoHS

R12

R12

32

1

0603/4.7K/5%/RoHS

0603/4.7K/5%/RoHS

GND

CP2

CP2

1210/4.7u/25V/5/RoHS

1210/4.7u/25V/5/RoHS

VOL

V33C

R14

R14

FBMJ2125HS420/PbF

FBMJ2125HS420/PbF
CP3

CP3

GNDGNDGND

AUDIOR­AUDIOR+
AUDIOL­AUDIOL+

R13

R13

0603/4.7K/5%/RoHS

0603/4.7K/5%/RoHS

INV_ADJ

V5A

LP1

LP1

VIN_12V

MUTE

R182

R182

R22

R22

MUTE

0603/0R/5%/RoHS/OPEN

0603/0R/5%/RoHS/OPEN

V33C

V5A

FP1

FP1

3216FF/1206/3A/RoHS

3216FF/1206/3A/RoHS

GND

0603/10K/5%/RoHS

0603/10K/5%/RoHS

0603/0.1u/25V/open

0603/0.1u/25V/open

LP5

LP5
FBMJ2125HS420/PbF

FBMJ2125HS420/PbF

1 2

LV470M025E055R

LV470M025E055R

C8

C8

GND

12

CP4

CP4

1210/4.7u/25V/5/RoHS

1210/4.7u/25V/5/RoHS

R9 0603/10K/5%/RoHSR9 0603/10K/5%/RoHS

Q2

Q2

32

2N7002/RoHS

2N7002/RoHS

GND

R10

R10

1

R11

R11
0603/10K/5%/OPEN

0603/10K/5%/OPEN

CP5

CP5

0603/4.7K/5%/RoHS

0603/4.7K/5%/RoHS

V12A

CP6

CP6
1210/4.7u/25V/5/RoHS

1210/4.7u/25V/5/RoHS

V33C

V12A

INV_ON/OFF

TP0610K/PbF

TP0610K/PbF

Q16

Q16

AUD_Shutdown

V5A

1

3 2

R183

R183
0603/1K/5%/RoHS

0603/1K/5%/RoHS

V5A

VIN_12V

INV_ON/OFF

INV_ADJ

V5A1 V5A1

1

TP

VIN_12V1

VIN_12V1

1

TP

INV_ON/OFF1

INV_ON/OFF1

1

TP

INV_ADJ1

INV_ADJ1

1

TP

R181

0603/10K/5%/RoHS

0603/10K/5%/RoHS

R181

Q18

Q18

2N7002/RoHS

2N7002/RoHS

[GND_INV]

32

1

LP2 FBMJ2125HS420/PbFLP2 FBMJ2125HS420/PbF

LP3 FBMJ2125HS420/PbFLP3 FBMJ2125HS420/PbF

LP4 FBMJ2125HS420/PbFLP4 FBMJ2125HS420/PbF

GND

LED_GL

C161

C161

0603/100n/25V/Y/RoHS

0603/100n/25V/Y/RoHS

GNDGND

VOL_ADJ

VOL_ADJ1VOL_ADJ1

1

1

2N7002/RoHS

2N7002/RoHS

0603/0R/5%/RoHS/OPEN

0603/0R/5%/RoHS/OPEN

V5A

R19

R19
0603/1K/5%/RoHS

0603/1K/5%/RoHS

32

Q5

Q5

GND

R20

R20

0603/10K/5%/RoHS

0603/10K/5%/RoHS

R18

R18

R17

R17

OPEN/0603

OPEN/0603

VOL1VOL1

1

C6

1206/10u/16V/5/RoHS

1206/10u/16V/5/RoHS

C6

GND

V5A

C4

C4

OPEN/0603

OPEN/0603

C5

C5
0603/100n/25V/7/RoHS

0603/100n/25V/7/RoHS

VOL

TP0610K/PbF

TP0610K/PbF

47

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

Q3

Q3

MUTE

V5A

1

3 2

R16

R16
0603/1K/5%/RoHS

0603/1K/5%/RoHS

R15

0603/10K/5%/RoHS

0603/10K/5%/RoHS

R15

Q4

Q4

2N7002/RoHS

2N7002/RoHS

32

Low: MUTE OFF

1

C3

C3

0603/100n/25V/Y/RoHS

0603/100n/25V/Y/RoHS

GND

GND

AUDIO_ON

ViewSonic Corporation

Model

Title

Date Rev:

INVERTER INTERFACE

L18

FBMJ2125HS420/PbF

FBMJ2125HS420/PbF

D9

D9

1 2

B240A-F

B240A-F

VGA_5V

R1

R1

R5

R5

0603/0R/5%/open

0603/0R/5%/open

1

2

3

Vref

DVI_5V

0603/0R/5%/open

0603/0R/5%/open

D7

D7
BAV70W/open

BAV70W/open

C42

C42

1206/22u/16V/Y/RoHS

1206/22u/16V/Y/RoHS

C43

0603/100n/25V/7/RoHS

0603/100n/25V/7/RoHS

C43

VCTRL

R202

R202
0603/51R/1%

0603/51R/1%

V18C

Q8

Q8

1

B

3

V33C1 V33C1

TP

U4

U4

LM1117MPX-3.3/RoHS

LM1117MPX-3.3/RoHSL18

3

VIN

1

GND

2

VOUT

4

VOUT

GND

C44

C44

1206/22u/16V/Y/RoHS

1206/22u/16V/Y/RoHS

1

V33C

C45

0603/100n/25V/7/RoHS

0603/100n/25V/7/RoHS

C45

V33CV5A

(SCALER VCC)

D35

D35
1N4148WS-F

1N4148WS-F

1 2

R204

R204

0603/100R/1%

0603/100R/1%

E

H2907AS

H2907AS

GND

C

4

2

Heat-Sink

GND

C160

C160
0805/4.7u/16V/Y

0805/4.7u/16V/Y

R203

R203
0603/2K/1%

0603/2K/1%

1

V18V1 V18V1

TP

V18C

U6

L9 FBMJ2125HS420/PbFL9 FBMJ2125HS420/PbF

C50

C50

1206/22u/16V/Y/RoHS

1206/22u/16V/Y/RoHS

C51

0603/100n/25V/7/RoHS

0603/100n/25V/7/RoHS

C51

U6

LM1117MPX-3.3/RoHS

LM1117MPX-3.3/RoHS

3

VIN

1

GND

2

VOUT

4

VOUT

GND

1206/22u/16V/Y/RoHS

1206/22u/16V/Y/RoHS

C52

C52

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V33P1 V33P1

TP

1

C53

0603/100n/25V/7/RoHS

0603/100n/25V/7/RoHS

C53

V33P

(POWER FOR SCALER)

V33PV5A

(Panel VCC)

ViewSonic Corporation

Model

POWER

Title

Date Rev:

DDCA_DAT

D1

D1

0603/10p/varistor/OPEN

0603/10p/varistor/OPEN

0603/10p/varistor/OPEN

0603/10p/varistor/OPEN

GND

D2

D2

R35

R35

0603/0R/5%/OPEN

0603/0R/5%/OPEN

11

12

13

14

15

CN7

CN7
89263-6762

89263-6762

1
6
2
7
3
8
4
9
5
10

GND

DDCA_CLK

R144

R144
0603/0R/5%/OPEN

0603/0R/5%/OPEN

1

32

D24

D24
BAV99W/RoHS

BAV99W/RoHS

C157

C157

0603/100n/25V/X/RoHS

0603/100n/25V/X/RoHS

32

1

D25

D25
BAV99W/RoHS

BAV99W/RoHS

C158

C158

0603/100n/25V/X/RoHS

0603/100n/25V/X/RoHS

32

1

0603/100n/25V/X/RoHS

0603/100n/25V/X/RoHS

D5

D5
BAV99W/RoHS

BAV99W/RoHS

V5A_ESD

C159

C159

R78

R78

0603/75R/1%

0603/75R/1%

R30

R30

0603/75R/1%

0603/75R/1%

GND

V5A_ESD

R29

R29

0603/75R/1%

0603/75R/1%

R21 0603/56R/1%R21 0603/56R/1%

R34 0603/56R/1%R34 0603/56R/1%

R23 0603/56R/1%R23 0603/56R/1%

R24 0603/470R/1%R24 0603/470R/1%

R25 0603/100R/1%R25 0603/100R/1%

R26 0603/100R/1%R26 0603/100R/1%

R27 0603/100R/1%R27 0603/100R/1%

C9 0603/47n/16V/7/RoHSC9 0603/47n/16V/7/RoHS

C10 0603/47n/16V/7/RoHSC10 0603/47n/16V/7/RoHS

C11 0603/47n/16V/7/RoHSC11 0603/47n/16V/7/RoHS

C15 0603/1n/16V/7C15 0603/1n/16V/7

C123 0603/47n/16V/7/RoHSC123 0603/47n/16V/7/RoHS

C124 0603/47n/16V/7/RoHSC124 0603/47n/16V/7/RoHS

C125 0603/47n/16V/7/RoHSC125 0603/47n/16V/7/RoHS

RIN

GIN

BIN

SOG

GNDR

GNDG

GNDB

D10

D10

0603220KV05T/RoHS

0603220KV05T/RoHS

D29

D29
0603220KV05T/RoHS

0603220KV05T/RoHS

GND

HSI

VSI

D6

D6

0603220KV05T/RoHS

0603220KV05T/RoHS

R64 0603/100R/5%/RoHSR64 0603/100R/5%/RoHS

R131 0603/100R/5%/RoHSR131 0603/100R/5%/RoHS

L8

L8

BK1608LL121/PbF

BK1608LL121/PbF

C129

C129

0603/100n/25V/X/RoHS

0603/100n/25V/X/RoHS

D32

D32
UDZSF-5.6B/PbF

UDZSF-5.6B/PbF

1 2

GND

D33

D33
UDZSF-5.6B/PbF

UDZSF-5.6B/PbF

1 2

GND

R133

R133

0603/10R/5%/RoHS

0603/10R/5%/RoHS

1 2

1
2
3

GND

GND

L20 0603/0R/5%/RoHSL20 0603/0R/5%/RoHS

R66 0603/0R/5%/RoHSR66 0603/0R/5%/RoHS

VGA_5V

VGA_5V

2

D30

D30
BZT52-C5V6S/RoHS

BZT52-C5V6S/RoHS

U15

U15

NC
NC
NC
GND4SDA

AT24C02-10TU-1.8/RoHS

AT24C02-10TU-1.8/RoHS

VCC

VCLK

SCL

8
7
6
5

R55

R55

0603/2.2K/5%/RoHS

0603/2.2K/5%/RoHS

GND GND

R129

R129

0603/2.2K/5%/RoHS

0603/2.2K/5%/RoHS

V5A

1

3

R136 0603/3.9K/5%/RoHSR136 0603/3.9K/5%/RoHS

VGA_5V

V5A

D31

D31
BAV70W/RoHS

BAV70W/RoHS

R60

R60
0603/47K/5%/RoHS

0603/47K/5%/RoHS

R57 0603/1K/1%/RoHSR57 0603/1K/1%/RoHS

C128

C128
0603/33p/50V/N/RoHS

0603/33p/50V/N/RoHS

GND

R54 0603/1K/1%/RoHSR54 0603/1K/1%/RoHS

C100

C100

0603/220p/50V/N

0603/220p/50V/N

GND

R68 0603/10K/5%/RoHSR68 0603/10K/5%/RoHS

R135 0603/10K/5%/RoHSR135 0603/10K/5%/RoHS

GND

C126

C126
0603/33p/50V/N/RoHS/open

0603/33p/50V/N/RoHS/open

C127

C127
0603/33p/50V/N/RoHS/open

0603/33p/50V/N/RoHS/open

GNDGND

HSYNC

VSYNC

DDCA_CLK

DSUB_DET

DDCA_DAT

C23

C23
0603/100n/25V/7/RoHS

0603/100n/25V/7/RoHS

GND

HSYNC1

HSYNC1

VSYNC1

VSYNC1

HSYNC

1

TP

TP

VSYNC

1

ViewSonic Corporation

49

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Model

Title

VGA

Date Rev:

CON1

CON1

RGB GND

HSYNC
VSYNC

SYNC GND

DDC SCL

DDC SDA

+5V

HPD

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

clk shield

DAT0+

DAT0-

DAT1+

DAT1-

DAT2+

DAT2-

DAT3+

DAT3-

DAT4+

DAT4-

DAT5+

DAT5-

clk+

clk-

2DS-0342-001

2DS-0342-001

V5A_ESD

DDCD_CLK

25

R

26

G

27

B

29
28
8
15
6

DDCD_CLK

DDCD_DAT

R37 0603/0R/5%/RoHSR37 0603/0R/5%/RoHS

R38 0603/0R/5%/RoHSR38 0603/0R/5%/RoHS

DDCD_DAT

V5A_ESD

DDCD_CLK

DDCD_DAT

7
14
16

R39

R39

1 2

BK1608LL121/RoHS

BK1608LL121/RoHS

L6

L6

DVI_5V

DVI_5V

11
3
19
22

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

GND

0603/10K/5%/RoHS

0603/10K/5%/RoHS

C162

C162

D13

D13

0603/100p/50V/N

0603/100p/50V/N

1 2

UDZSF-5.6B/PbF

UDZSF-5.6B/PbF

32

BAV99W/RoHS

BAV99W/RoHS

UDZSF-5.6B/PbF

UDZSF-5.6B/PbF

0603/100p/50V/N

0603/100p/50V/N

1 2

R40

R40

D18

D18

32

1

D14

D14

C163

C163

0603/100n/25V/Y/RoHS

0603/100n/25V/Y/RoHS

D15

D15

UDZSF-5.6B/PbF

UDZSF-5.6B/PbF

1 2

0603/10R/5%/RoHS

0603/10R/5%/RoHS

R41 0603/10R/5%/RoHSR41 0603/10R/5%/RoHS

R42 0603/10R/5%/RoHSR42 0603/10R/5%/RoHS

D20

D19

D19

BAV99W/RoHS

BAV99W/RoHS

1

32

D20

BAV99W/RoHS

BAV99W/RoHS

1

C26

C26

GND

32

U10

U10

1

NC

2

NC

3

NC

4

GND

R43 0603/10R/5%/RoHSR43 0603/10R/5%/RoHS

D21

D21

BAV99W/RoHS

BAV99W/RoHS

1

V5A

V5A

1

2

D16

D16

BAV70W

BAV70W

3

VCC

VCLK

SCL

SDA

8
7
6
5

AT24C02-10TU-1.8/RoHS

AT24C02-10TU-1.8/RoHS

R44 0603/10R/5%/RoHSR44 0603/10R/5%/RoHS

32

0603/3.9K/5%/RoHS

0603/3.9K/5%/RoHS

R48

R48

D22

D22

32

BAV99W/RoHS

BAV99W/RoHS

1

C25

C25

0603/100n/25V/Y/RoHS

0603/100n/25V/Y/RoHS

R49 0603/47K/5%/RoHSR49 0603/47K/5%/RoHS

GND

R45 0603/10R/5%/RoHSR45 0603/10R/5%/RoHS

R46 0603/10R/5%/RoHSR46 0603/10R/5%/RoHS

R47 0603/10R/5%/RoHSR47 0603/10R/5%/RoHS

D3

D23

D23

32

BAV99W/RoHS

BAV99W/RoHS

1

D3

32

BAV99W/RoHS

BAV99W/RoHS

1

R51

R50

R50

0603/10K/5%/RoHS

0603/10K/5%/RoHS

D4

D4

R51

0603/10K/5%/RoHS

0603/10K/5%/RoHS

BAV99W/RoHS

BAV99W/RoHS

1

B+
B­G+
G­R+
R­CLK+
CLK-

L5

L5

V5A V5A_ESD

0603/0R/5%

0603/0R/5%

C27

C27

1206/10u/16V/5/RoHS

1206/10u/16V/5/RoHS

50

1 2

GND

0603/100n/25V/7

0603/100n/25V/7

D17

D17
UDZSF-5.6B/RoHS/OPEN

UDZSF-5.6B/RoHS/OPEN

C28

C28

C29

C29

0603/100n/25V/7

0603/100n/25V/7

GND

0603/100n/25V/7

0603/100n/25V/7

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

C30

C30

C31

C31

0603/100n/25V/7

0603/100n/25V/7

C32

C32

0603/100n/25V/7

0603/100n/25V/7

C33

C33

0603/100n/25V/7

0603/100n/25V/7

C34

C34

0603/100n/25V/7

0603/100n/25V/7

C35

C35

0603/100n/25V/7

0603/100n/25V/7

ViewSonic Corporation

Model

Title

Date Rev:

DVI

TP0610K/PbF

TP0610K/PbF

Q12

Q12

V33C

1

3 2

R3

R3
0603/249R/1%/RoHS

0603/249R/1%/RoHS

MENU
LEFT
RIGHT
TURBO
AUTO

POWER

0603*4/10K/5%/RoHS

0603*4/10K/5%/RoHS

R62

0603/10K/5%/RoHS

0603/10K/5%/RoHS

2N7002/RoHS/OPEN

2N7002/RoHS/OPEN

R62

Q13

Q13

785

LED_O

4

6

312

LED_G

V33C

RP46

RP46

R7

R7

32

0603/0R/5%/RoHS

0603/0R/5%/RoHS

1

GND GND

V33C

785

6

RP47

RP47
0603*4/10K/5%/RoHS

0603*4/10K/5%/RoHS

312

4

V33C

R36

R36

0603/1K/5%/RoHS/OPEN

0603/1K/5%/RoHS/OPEN

LED_OR

C2

C2

0603/100n/25V/Y/RoHS/OPEN

0603/100n/25V/Y/RoHS/OPEN

Bead Array LP8,LP9,LP11=>modified RoHs

LP6 BK32164M121LP6 BK32164M121

1
2
3
4

LP7 BK32164M121LP7 BK32164M121

1
2
3
4

8
7
6
5
8
7
6
5

CP7

CP7
0603*4/100n/25V/RoHS

0603*4/100n/25V/RoHS

453627

453627

18

CP8

CP8

0603*4/100n/25V/RoHS

0603*4/100n/25V/RoHS

GND

CN3

CN3

15
14
13
12
11
10
9

L1

L1

AUDIOR-

18

AUDIOR+

AUDIOL-

AUDIOL+

1 2

MPZ1608S221/RoHS

MPZ1608S221/RoHS

L2

L2

1 2

MPZ1608S221/RoHS

MPZ1608S221/RoHS

L3

L3

1 2

MPZ1608S221/RoHS

MPZ1608S221/RoHS

1 2

MPZ1608S221/RoHS

MPZ1608S221/RoHS

GND

L4

L4

8
7
6
5
4
3
2
1

HEADER 10_2/RoHS

HEADER 10_2/RoHS

LED_O

V33C V33C

R2

R2
0603/1K/5%/RoHS/OPEN

0603/1K/5%/RoHS/OPEN

LED_GL

C1

C1

0603/100n/25V/Y/RoHS/OPEN

0603/100n/25V/Y/RoHS/OPEN

GND

TP0610K/PbF

TP0610K/PbF

0603/249R/1%/RoHS

0603/249R/1%/RoHS

Q14

Q14

R4

R4

LED_G

R63

0603/10K/5%/RoHS

0603/10K/5%/RoHS

1

2N7002/RoHS/OPEN

3 2

2N7002/RoHS/OPEN

R63

Q15

Q15

GND

32

0603/0R/5%/RoHS

0603/0R/5%/RoHS

1

R8

R8

51

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ViewSonic Corporation

Model

Title

Date Rev:

OSD

VCC

STV

CPV

OE

STB

POL

PANEL_ON/OFF

DCDC_ON/OFF

VCM_PWM

V33P

V33P

GND

VCC

FSTH
FB2P
FB2N
FB1P
FB1N
FB0P
FB0N

FG2P
FG2N
FG1P
FG1N
FG0P
FG0N

FCKP
FCKN

STB
POL

FR2P
FR2N
FR1P
FR1N
FR0P
FR0N

OE

CPV

STV

FSTH

OE
CPV
STV

STB
POL

V5A

V5A

GND

BB2P
BB2N
BB1P
BB1N
BB0P
BB0N

BG2P
BG2N
BG1P
BG1N
BG0P
BG0N

BCKP
BCKN

BR2P
BR2N
BR1P
BR1N
BR0P
BR0N

BSTH

GVOFF

VCM_PWM

DCDC_ON/OFF

PANEL_ON/OFF

BSTH

GVOFF

VCM_PWM
DCDC_ON/OFF
PANEL_ON/OFF

GVOFF

FSTH

BSTH

GND

S Board X Board

RA N/P --> BA P/N

GA N/P --> GA P/N

BA N/P --> RA P/N

52

ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2

V12A

V12A

GND

GND

ViewSonic Corporation

Model

Title

Date Rev:

PANEL INTERFACE

11. PCB Layout Diagrams

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57

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* 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?

Name:

Reader’s basic dada:

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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ViewSonic Corporation Confidential - Do Not Copy VE1920wmb-2