ViewSonic VX2235wm-1 Service manual

Service Manual

ViewSonic VX2235wm-1

Model No. VS11349

22” Color TFT LCD Display

(VX2235wm-1_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 8/14/2006 Initial Release J. Chang

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TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 3

3. Front Panel Function Control Description 13

4. Circuit Description 19

5. Adjustment Procedure 20

6. Troubleshooting Flow Chart 54

7. Recommended Spare Parts List 62

8. Exploded Diagram and Exploded Parts List 64

9. Block Diagram 67

10. Schematic Diagrams 68

11. PCB Layout Diagrams 74

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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.
(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 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 .

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

2.1 INSTRUCTION

FEATURES VX2235wm

Size

TFTLCD PANEL

st

1

CMO

A220Z1

Input Signal

Sync Compatibility

Compatibility

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

Luminance (Typ)

Contrast Ratio (Typ) 700:1

Colors 16.2 M (6 bits + 2 bits FRC)

Response Time 5 ms(on/off)

Viewing Angle (H/V) 170 ° / 160 °

Recommend resolution 1680x1050@60Hz

Analog Yes (75ohms, 0.7/1.0 Vp-p)

Digital Yes

Separate Sync Yes

Composite Sync Yes

Sync on Green Yes

PC Yes

Power Mac Yes

TV Box (NextVision 6) Yes

22 " wide

280 cd/㎡

Power Consumption

Audio 3W / THD 10% (Max) Yes

Ergonomics

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

Dimension

Weight

Operating Condition

Storage Condition

On Mode(Typ) < 48 W

Off Mode (Max)

Tilt ( 20 ° - -5 °)

Swivel No

Pivot No

Height Adjust No

Physical (W x H x D) 524 x 482 x 244 mm

Package (W x H x D) 575 x 522 x 150 mm

Physical (Net Weight) 6 Kg / 13.2 lbs

Package (Gross Weight) 7.5 Kg / 16.5 lbs

Temperature (℉/℃) 41℉-95℉/+5℃-+35℃

Humidity (%) 20 % - 80 %

Temperature (℉/℃) -4℉-131℉/-20℃-55℃

Humidity (%) 20 % - 85 %

≦1 W

Ye s

Global: CB, MPR II,WEEE,ROHS

VSA:UL, cUL, FCC-B, TUV-S, NOM, Energy Star

Regulation

VSE:TUV/ERGO(covers ISO13406-2&MPR II),CE, GOST-R+Hygienic ,SASO , ENERGY

VSI: BSMI, CCC, PSB, C-TICK, MIC, Green Mark

VSCN:CCC

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2.2 GENERAL SPECTION

Test Resolution & Frequency 1680x1050 @ 60Hz

Test Image Size Full Size

Contrast and Brightness Controls

2.3 VIDEO INTERF ACE

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 1/2B

Video Signals

Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)

Maximum PC Video Signal 950 mV with no damage to monitor

Maximum Mac Video Signal 1250 mV with no damage to monitor

Factory Default:

Contrast = 70%, Brightness = 100%

1. Video RGB (Analog)

Separate, Composite, and Sync on Green

2. TMDS (Digital)

Sync Signals TTL

DDC 1/2B Compliant with Revision 1.3

Sync Compatibility Separate Sync, Composite Sync, SOG

Video Compatibility

Resolution Compatibility

Exclusions Not compatible with interlaced video

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

and after market video cards

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

1024 x 768, 1152 x 864, 1152 x 870, 1280 x 720, 1280 x 960, 1280 x

1024 , 1400 x 1050 , 1440 x 900 , 1600 x 1200, 1680 x 1050

* The image vertical size might not be full screen.

But the image vertical position should be at the center.

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2.4 POWER SUPPLY

Internal Power Supply Part Number: 27-D009542

Input Voltage Range AC100~240 (Worldwide)
Input Frequency Range 50 to 60 Hertz
Short Circuit Protection OUTPUT CAN BE SHORTED WITHOUT DAMAGE
Over Current Protection 3.3~4.5A typical at 5 VDC ( PROTECT WHEN SHORT CIRCUIT )
Leakage Current 3.5MA (MAX) AT 264VAC / 50HZ
Efficiency 80 % TYPICAL AT 115VAC FULL LOAD
Fuse INTERNAL AND NOT USER REPLACEABLE
Power Dissipation < 48 WATTS (TYP)
Max Input AC Current 1.6A (max)
Inrush Current (Cold Start)

80 A Max./ 240V

/ 50Hz (Cold Start at 25℃,Full Load)

AC

SHALL START AND FUNCTION PROPERLY WHEN UNDER

Power Supply Cold Start

FULL LOAD, WITH ALL COMBINATIONS OF INPUT VOLTAGE,
INPUT FREQUENCY, AND OPERATING TEMPERATURE
SHALL BE ABLE TO WITHSTAND AN ANSI/IEEE C62.41-1980

Power Supply Transient Immunity

6000V 200 AMPERE RING WAVE TRANSIENT TEST WITH NO
DAMAGE

Power Supply Line Surge Immunity

Shall be able to withstand 1.5 times nominal line voltage for one cycle
with no damage
Shall be able to function properly, without reset or visible screen

Power Supply Missing Cycle Immunity

artifacts, when ½ cycle of AC power is randomly missing at nominal
input
The power supply shall not produce audible noise that would be

Power Supply Acoustics

detectable by the user. Audible shall define 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

to display.
Color = Black
Schuko CEE7-7 type plug.

European Type Power Cable

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

CCC Type Power Cable

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

PSE Type Power Cable

to display.
Color = Black

Power Saving Operation(Method) VESA DPMS Signaling

On Mode < 48 W (Typ) / 50 W (Max)

Power Consumption

Saving Mode < 2 W@230VAC 50HZ
Off Mode < 1 W @230VAC 50Hz
(DC Power Off; Meet to Energy Star Ver4.0 Tier2)

Recovery Time On Mode = N/A, Active Off < 3 sec

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2.5 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency

Vertical Refresh Rate

Maximum Pixel Clock 150 MHz

Sync Polarity Independent of sync polarity.

24 – 82 kHz

50 – 85* Hz

Timing Table

Analog

Composite

Item

Timing

1 640 x 350 @ 70 Hz, 31.5 KHz 　 　 　 　

2 640 x 350 @ 85 Hz, 37.9 KHz 　 　 　 　

3 640 x 400 @ 60 Hz, 31.5 KHz 　 　 　 　

Separated

SOG

Digital - TMDS

Remark

For Analog sync, the image vertical size image
will be not full screen (Still at the center), And the
OSD will be 640x350/640x400/720x400
(primary= 720x400).
For Analog sync, the image vertical size image
will be not full screen (Still at the center), And the
OSD will be 640x350/640x400/720x400
(primary= 720x400).
For Analog sync, switch 640x400@60Hz and
640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)
For Analog sync, the image vertical size image

4 640 x 400 @ 70 Hz, 31.5 KHz 　 　 　 　

5 640 x 400 @ 85 Hz, 37.9 KHz 　 　 　 　

6 640 x 480 @ 50 Hz, 24.7 KHz 　 　 　

7 640 x 480 @ 60 Hz, 31.5 KHz 　 　 　 　

8 640 x 480 @ 67 Hz, 35 KHz 　 　 　 　
9 640 x 480 @ 72 Hz, 37.9 KHz

will be not full screen (Still at the center), And the
OSD will be 640x350/640x400/720x400
(primary= 720x400).
For Analog sync, the image vertical size image
will be not full screen (Still at the center), And the
OSD will be 640x350/640x400/720x400
(primary= 720x400).

For Analog sync, switch 640x400@60Hz and
640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)

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10 640 x 480 @ 75 Hz, 37.5 KHz 　 　 　 　
11 640 x 480 @ 85 Hz, 43.3 KHz

For Analog sync, the image vertical size image

12 720 x 400 @ 70 Hz, 31.5 KHz 　 　 　 　

13 720 x 400 @ 85 Hz, 37.9 KHz 　 　 　 　

14 720 x 480 @ 60 Hz, 31.5 KHz 　 　 　 　

15 720 x 576 @ 50 Hz, 31.3 KHz 　 　 　 　

16 800 x 600 @ 56 Hz, 35.1 KHz 　 　 　 　
17 800 x 600 @ 60 Hz, 37.9 KHz 　 　 　 　
18 800 x 600 @ 72 Hz, 48.1 KHz

will be not full screen (Still at the center), And the
OSD will be 640x350/640x400/720x400
(primary= 720x400).
For Analog sync, the image vertical size image
will be not full screen (Still at the center), And the
OSD will be 640x350/640x400/720x400 (primary
= 720x400).
For Analog sync, the image vertical size image
will be not full screen (Still at the cente r),and the
information OSD shows 640x480
For Analog sync, the image vertical size image
will be not full screen (Still at the cente r),and the
information OSD shows 800x600

19 800 x 600 @ 75 Hz, 46.9 KHz 　 　 　 　
20 800 x 600 @ 85 Hz, 53.7 KHz 　 　 　 　
21 832 x 624 @ 75 Hz, 49.7 KHz

For Analog sync, Switch 1024x768@50Hz and

22 1024 x 768 @ 50 Hz, 39.6 KHz 　 　 　 　

23 1024 x 768 @ 60 Hz, 48.4 KHz 　 　 　 　
24 1024 x 768 @ 70 Hz, 56.5 KHz 　 　 　 　
25 1024 x 768 @ 75 Hz, 60 KHz 　 　 　 　
26 1024 x 768 @ 75 Hz, 60.2 KHz 　 　 　 　
27 1024 x 768 @ 85 Hz, 68.7 KHz 　 　 　 　
28 1152 x 864 @ 75 Hz, 67.5 KHz 　 　 　 　
29 1152 x 870 @ 75 Hz, 68.7 KHz

30 1280 x 768 @ 50 Hz, 39.6 KHz 　 　 　 　

1280x768@50Hz by [1]+[2] short cut key
(primary = 1024x768@50Hz)

For Analog sync, Switch 1024x768@50Hz and
1280x768@50Hz by [1]+[2] short cut key

(primary = 1024x768@50Hz)
31 1280 x 768 @ 60 Hz, 47.4 KHz 　 　 　 　
32 1280 x 768 @ 60 Hz, 47.8 KHz

For Analog sync, Switch 1024x768@75Hz and
33 1280 x 768 @ 75 Hz, 60.3 KHz

34 1280 x 768 @ 85 Hz, 68.6 KHz 　 　 　 　 For Analog sync, Switch 1024x768@85Hz and

1280x768@75Hz by [1]+[2] short cut key

(primary = 1024x768@75Hz)

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1280x768@85Hz by [1]+[2] short cut key

(primary = 1024x768@85Hz)
35 1280 x 960 @ 50 Hz, 49.4 KHz 　 　 　 　
36 1280 x 960 @ 60 Hz, 59.7 KHz 　 　 　 　
37 1280 x 960 @ 75 Hz, 75.2 KHz 　 　 　 　
38 1280 x 1024 @ 50 Hz, 52.7 KHz 　 　 　 　
39 1280 x 1024 @ 60 Hz, 64 KHz 　 　 　 　
40 1280 x 1024 @ 70 Hz, 74.6 KHz 　 　 　 　
41 1280 x 1024 @ 72 Hz, 76.8 KHz 　
42 1280 x 1024 @ 75 Hz, 80 KHz 　 　 　 　
43 1360 x 768 @ 60 Hz, 47.7 KHz 　 　 　 　
44 1400 x 1050 @ 50 Hz, 54.1 KHz 　 　 　 　
45 1400 x 1050 @ 60 Hz, 64.7 KHz

For analog sync,, Switch 1400x1050@60Hz and
46 1400 x 1050 @ 60 Hz, 65.3 KHz

47 1400 x 1050 @ 75 Hz, 82.3 KHz 　 　 　 　
48 1440 x 900 @ 60 Hz, 55.5 KHz 　 　 　 　
49 1440 x 900 @ 60 Hz, 59.9 KHz 　 　 　 　
50 1440 x 900 @ 75 Hz, 75 KHz 　 　 　 　
51 1600 x 1200 @ 60 Hz, 75 KHz

52 1680 x 1050 @ 60 Hz, 65.3 KHz 　 　 　 　

*1. Tolerance ≧ ±2KHz. (if the range dose not cover other timing mode)

*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message with blanking.

*3. The image quality of 85Hz mode might be worse than 75Hz.

1680x1050@60Hz by [1]+[2] short cut key

(primary = 1680x1050@60Hz)

For analog sync,, Switch 1400x1050@60Hz and

1680x1050@60Hz by [1]+[2] short cut key

(primary = 1680x1050@60Hz)

Primary Presets

1680x1050 @ 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 Image Adjust” time

● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting when execute “Auto Image

Adjust”

● The monitor needs to do “Auto Adjust” the first time when a new mode is detected

(See section “0-Touch™ Function Actions”)

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2.6 FRONT PANEL C ONTROLS AND INDICATORS

Front Panel Hardware Controls

Power Switch (Front Head) Power Control, soft Power Switch.

Power LED (Front Head) Blue – ON

Orange – Active Off

Dark = Soft Power Switch OFF

Front Panel Controls (Head)

[ 1 ] [ 2 ] [

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

] [▼] [▲]

[ 1 ] BUTTON 1

[ 2 ] Button 2

[

] Power

[▼] DOWN ARROW BUTTON

[▲] UP ARROW BUTTON

Note: Power Button, Button 1 and Button 2 must be one-shot logic

operation. (i.e. there should be no cycling)

Short Cuts Function from the button(s)

[1] Main Menu

[2] Input toggle (Analog or Digital)

[▼] To immediately activate Brightness/Contrast menu.

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

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

[1] + [▼] + [▲]

(Keep pushing 3 sec)

[1] + [▼] Power Lock

[1] + [▲] OSD Lock

[▲] Essential mode switch

[2] + [▲] Skin tone switch

[▼] +[▲] + [ ] Factory Mode

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

Standard ->Text -> Cinema -> Game -> Portrait -> Scenery -> Vivid

Nature -> Reddish -> yellowish

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

Volume*

4

, Mute*4

Color Adjust

SRGB, 9300K,7500K, 6500K(default), 5400,User Color [R, G, B]

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

[“www.ViewSonic.com

” ]

Manual Image Adjust

Horizontal Size*

Scenery, Vivid ]

1

, H/V. Position*1, Fine Tune*1, Sharpness*

,

Opticolor Skin Tone[Nature, reddish ,yellowish]

3 ,

Opticolor [Standard, Text , Cinema, Game, Portrait,

Setup Menu

Language [English, French, German, Italian, Spanish, Finnish, Japanese, Simplified Chinese, Traditional 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, Opticolor On, and Opticolor Skin Tone On

3

*

These functions are not available under Native Resolution Mode

4

*

These functions setting can be recalled to default value by pressing [▼]+[▲]

[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 back "On" when power is restored after a power

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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 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 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

Input Priority

This function is defined the auto detect priority when the display has several inputs. Please refer to the detail flow chart as the

appendix D

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2.7 AUDIO INTERFACE (SPEAKER SPECIFICATION)

Line input signal 1.0 Vrms @1kHz

Line input impedance 10 kOhm

Maximum Amp power output (Watt)

Amp -THD < 10 % THD @1kHz

Speaker Power rating(Ω/Watt)

Signal to Noise Ratio 72 dB

Frequency response Fo – 20kHz

SPL. 85 ± 3 dB (at 0.5m)

FO 300 Hz

2 W (RL=4Ω)

4Ω/2.5 W (TYP.) ; 4Ω/ 3 W (MAX)

Line input connection

Vibration

Screen image

Connector PC99 requirement Audio in

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

Audio DPMS

3.5 mm stereo jacks

There should be no audible vibration resonance at volume=100% &

treble / bass in def. Value

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

conditions

Lime Green pantone # 577C

SPEAKERS STAY ON WHEN THE REST OF THE MONITOR IS IN
POWER SAVING
NOTE: THERE IS NO GUARANTEE <1 W AT POWER
CONSUMPTION IN ACTIVE OFF MODE, WHEN THE AUDIO
CABLE IS CONNECTED

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3. Front Panel Function Control Description

Adjusting the Screen Image

Use the buttons on the front control panel to display and adjust the OSD controls which display
on the screen. The OSD controls are explained at the top of the next page and are defined in
“Main Menu Controls” on page 10.

Main Menu

with OSD controls

Front Control Panel

shown below in detail

Displays the control screen for

the highlighted control.

Also toggles between two

controls on some screens.

Also a shortcut to Auto Image

Adjust.

Displays the Main

Menu or exits the

control screen and

saves adjustments.

Standby Power On/Off
Power light
Blue = ON
Orange = Power Saving

Scrolls through menu
options and adjusts the
displayed control.

Also a shortcut to display
the Contrast adjustment
control screen (T) /
OptiColor (S)

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Do the following to adjust the display setting:

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

NOTE: All OSD menus and adjustment screens disappear automatically after about 15

seconds. This is adjustable through the OSD timeout setting in the setup menu.

2. To select a control to adjust, pressSorTto scroll up or down in the Main Menu.

3. After the desired control is selected, press button [2]. A control screen like the one shown

below appears.

The command line at the bottom of the
control screen tells what to do next from
this screen. You can toggle between control
screens, adjust the selected option, or exit
the screen.

4. To adjust the setting, press the up S or down T buttons.

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

The following tips may help you optimize your display:

• Adjust the computer's graphics card so that it outputs a 1680 x 1050 @ 60Hz video signal to
the LCD display. (Look for instructions on “changing the refresh rate” in the graphics card's
user guide.)

• If necessary, make small adjustments using H. POSITION and V. POSITION until the
screen image is completely visible

. (The black border around the edge of the screen should

barely touch the illuminated “active area” of the LCD display.)

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Main Menu Controls

Adjust the menu items shown below by using the up S and down T buttons.

Control Explanation

Auto Image Adjust sizes and centers the screen image automatically.

Contrast adjusts the difference between the image background (black level)

and the foreground (white level).

Brightness adjusts background black level of the screen image.

Input Select toggles between inputs if you have more than one computer

connected to the VX2235wm.

Audio Adjust
Vol ume increases the volume, decreases the volume, and mutes the audio.
Mute temporarily silences audio output.

Color Adjust provides several color adjustment modes, including preset color

temperatures and a User Color mode which allows independent adjustment of
red (R), green (G), and blue (B). The factory setting for this product is 6500K
(6500 Kelvin).

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

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Control Explanation

9300K-Adds blue to the screen image for cooler white (used in most office

settings with fluorescent lighting).

7500K - Adds blue to the screen image for cooler white (used in most office

settings with fluorescent lighting).

6500K-Adds red to the screen image for warmer white and richer red.

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

User Color Individual adjustments for red (R), green (G), and blue (B).

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

2. To adjust selected color, pressSandT.

Important: If you select RECALL from the Main Menu when the product is

set to a Preset Timing Mode, colors return to the 6500K factory preset.

Information displays the timing mode (video signal input) coming from the
graphics card in the computer, the LCD model number, the serial number, and
the ViewSonic® website URL. See your graphics card’s user guide for
instructions on changing the resolution and refresh rate (vertical frequency).
NOTE: VESA 1680 x 1050 @ 60Hz (recommended) means that the resolution
is 1680 x 1050 and the refresh rate is 60 Hertz.

Manual Image Adjust

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Control Explanation

Horizontal Size adjusts the width of the screen image.

H./V. Position (Horizontal/Vertical Position) moves the screen image left or

right and up or down.

Fine Tune sharpens the focus by aligning text and/or graphics with pixel
boundaries.

NOTE: Try Auto Image Adjust first.

Sharpness adjusts the clarity and focus of the screen image.

OptiColor Mode provides an optimum display environment depending on the

contents displayed. It contains 7 user-selectable presets. These 7 presets are
easily accessible from the short cut keys.

Standard is for general windows environment and monitor default setting.

Tex t optimized for text editing and viewing in a word processing environment.

Cinema optimized for movie and video environment.

Game optimized for PC/TV game environment.

Portrait optimized for displaying indoor portraits and enhancing pictures.

Scenery optimized for displaying outdoor scenery images.

Vivid optimized for color luster and sharpness.

These 7 presets are carefully chosen by Viewsonic, but may not suit all users'
tastes. In that case, the user can either return to the Standard setting and
manually adjust the brightness and contrast as desired.

OptiColor Skin Tone includes 3 presets (Natural / Red Tone / Yellow Tone)
which user can select according to user's preference.

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Control Explanation

Setup Menu displays the menu shown below:

Language Select allows the user to choose the language used in the menus and

control screens.

Resolution Notice allows the user to enable or disable this notice.

If you enable the Resolution Notice shown above and your computer is set at a
resolution other than 1680 x 1050, the following screen appears.

OSD Position allows the user to move the OSD menus and control screens.

OSD Timeout sets the length of time the OSD screen is displayed. For example,

with a “30 second” setting, if a control is not pushed within 30 seconds, the
display screen disappears.

OSD Background allows the user to turn the OSD background On or Off.

Memory Recall returns the adjustments back to factory settings if the display is

operating in a factory Preset Timing Mode listed in the Specifications of this
manual.

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4. Circuit Description

1.RTD 2553V

Realtek RTD2553V series products are all-in-one LCD monitor controllers supporting UXGA / WSXGA+ / WXGA+ / SXGA

(optional), and integrate Realtek high performance ADC, TMDS Rx(optional),scaling engine, OSD engine, LVDS Tx, RSDS

Tx and so on. Moreover, all products are pin compatible in QFP128-pin package to save cost and make the design easier.

2. RTD2120

This chip is the micro-processor of LCD monitor. It uses the design ware DW8051 of Synopsys as the 8051 core of this chip

and is compatible with other industry 8051 series. Also, 96Kbyte FLASH with 8 bit bus is embedded in this chip which is

licensed from TSMC 0.18um e-FLASH process. Here we use the package of PLCC44/LQFP48 if we would like to have a

discrete MCU controller or we make a multi-chip package with our LCD monitor controller to form one chip package to save

the cost of package and PCB material.

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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

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

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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

15. Function Test Display pattern

Item Pattern Description Remark

1
2

3
4
5

6

Gray_Scale_0-100_V
Gray_Scale_0-100_H

Vertical 64 (256) Gray Scale (right→left，From 0 to 100% White)

Horizontal 64 (256) Gray Scale (up→down，From 0 to 100% White)

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

Figure 1

Figure 2

7
8

White Full Screen White Figure7

Black_Tile Black Tile Under White Background Figure 8

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Figure 1 Figure 2

Figure 3 Figure 4

Figure 5 Figure 6

Figure 7 Figure 8

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B BIOS update procedure

1. To setup ISP environment

Hardware:

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

Software:

ISP driver .

If the O.S. was Win2000 or Win XP please have to install

PORT95NT.exe

Fig1

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

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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 2.5

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

Fig 5.2

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

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8. ISP Adaptor Schematic

9. Adaptor Linking

Connect with

ISP Adaptor

Connect with

PC/HOST

Printer Cable

VGA Cable

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C. 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)

Figure 1 Figure 2

1.3 Put the cushion into the carton then place the monitor on the cushion. (Figure 3)

1.4 Put the cushion then place the seat assy and 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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Monitor Assembly and Disassembly
1 Separate Stand Assy

1.1 Remove Stand Cover

Step 1 :

Remove the Seat Assy

Step 2 :

Remove the Stand Cover.

Step 3 :

Loose and remove 4 screws

Step4 :

Remove the Stand Assy

Step 5 :

Completed.

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2 Separate Rear Cover (Rear Case Assy)
Separate Bezel hooks to take Bezel and Rear Cover apart.

Step 1 :

Loose and remove 2 screws.

Step 2 :

Separate Bezel hooks to take

Bezel and Rear Cover apart.

Step 3 :

Remove Rear Cover.

Step 4 :

Completed.

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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 2 screws.

Step 7 :
Loose and remove 2 screws.

Step 8 :
Loose and remove 4 screws.

Step 9 :
Remove the PCBA Cover

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3.2 Remove Power Board and AD Board

Step 1 :
Loose and remove 4 screws.

Step 2 :
Remove Lips Board

Step 3 :
Remove 2 pieces of FFCs.

Step 4 :
Remove the FFC.

Step 5 :
Loose and remove 4 screws.

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Step 6 :
Remove AD PCBA.

Step7 :

Completed.

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 .

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Step 5 :
Insert new Lips Board.

Step 6 :

Fasten 4 fixed screws.

Step 7 :Completed.

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5. Remove OSD Board

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.

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Step 3 :

Fasten 2 fixed screws

Step 4 :

Fasten 2 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.

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Step 8 :

Fasten 4 fixed screws.

Step 9 :

Insert FFC.

Step 10 :

Completed.

8. Rear Assy & Stand Assembly

Step 1 :

Place Rear Cover.

Step 2 :

Fasten 2 fixed screws.

Step 3 :

Place the Stand Assy.

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Step 4 :

Fasten 4 fixed screws.

Step 5 :

Join the Stand Cover.

Step 6 :

Join the Seat Assy

Step 7 :

Completed.

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6. Troubleshooting Flow Chart

p

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 Ste

A

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TEST

Completed

Defect Mode Failure Analysis Repair Testing

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

A

Display Noise

Power on
Display
Abnormal

Flicker

Beat Display
Flicker

Beat Display
Shut Down

Display Wave

Check PCBA

Check Panel

Check PCBA

AD/B Change

Power/B Change

Inverter/B Change

CNT/B Change

Panel Change

AD/B Change

Power/B Change

CNT/B Change

No Backlight

B

Check Panel

Check Adapter

Next Step

Panel Change

Adapter Change

NG

TEST

Completed

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p

A

A

A

A

Failure Analysis Repair Testing

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

B

Display White
Out

Booting Delay

Brightness
Even
Abnormal

Beat Display
No Backlight

No signal

R.G.B

Check PCB

Check PCB

Check PCB

Check Panel

Check Adapter

Check PCB

AD/B Change

Power/B Change

Inverter/B Change

OSD/B Change
Power/B Change

Inverter/B Change

Panel Change

Adapter Change

AD/B Change

CNT/B Change

C

Display
Abnormal

Gray Scale
Display
Abnormal

Check Wire

Check Panel

Next Ste

VGA cable

DVI cable

Panel Change

NG

TEST

Completed

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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

Vertical
Band Defect

Horizontal
Band Defect

Power Saving
Display
Abnormal

Peculiar Smell

Check PCBA

Check Panel

Check PCBA

Check PCBA

AD/B Change

Panel Change

AD/B Change

AD/B Change

Power/B Change

Inverter/B Change

NG

Next Step

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TEST

Complete

Defect Mode Failure Analysis Repair Testing

r

g

g

p

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

AD/B Change

Power/B Change

Power ON/OFF

Abnormal

LED Display

Abnormal

No Power

Turn Off
Abnormal

LED Off

LED Dark

Check PCBA

Check PCBA

Check Wire

Check Wire

Check Adapter

Check PCBA

CNT/B Change
Inverter/B

OSD/B Change

OSD Cable

AC Power Change

DC Power CNT

Cable Chan

Adapter Change

AD/B Change

Power/B Change
Inverter/B

OSD/B Change

e

LED Abnormal

OSD Cable

LED Loss

LED Flicke

Check Wire

DC Power CNT

Cable Chan

Adapter Change

e

NG

Next Ste

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TEST

Completed

Defect Mode Failure Analysis Repair Testing

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

Abnormal BIOS

&OSD

OSD Key
Unavailable

OSD Can’t
Input

OSD Can’t
Read

OSD No
Display

OSD Jiggle

OSD Display
Abnormal

Check PCB

Check Wire

Check BIOS

AD/B Change

CNT/B Change

Power/B Change
Inverter/B

OSD/B Change

D-sub cable

OSD cable

VGA cable
DVI cable

BIOS Update

Abnormal

Loudspeaker

Voice Loss

Abnormal
Loud

L/R
Abnormal

No Voice

L/R Same
Volume

Loudspeaker
Noise

Check PCBA

Check Wire

Check Loudspeaker

Next Step

AD/B Change
CNT/B Change

Power/B Change
Inverter/B Change

OSD/B Change

OSD Cable Change

Loudspeaker
Change

NG

TEST

Completed

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Defect Mode Failure Analysis Repair Testing

A

p

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

Other Abnormal

Display

Display Shut
Down

Display Flicker
((tapping )

DVI Signal
Display
Abnormal

Check PCB

Check Panel

Check PCBA

Check Panel

Check PCB

AD/B Change

Power/B Change

CNT/B Change

Panel Change

AD/B Change

CNT/B Change

Panel Change

AD/B Change

EDID Update

TV Function
Display
Abnormal

Check PCBA

Check Wire

Check Controller

Next Ste

TV /B Change

AV Cable Change

Remote controller
Change

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

)

)

)

)

r

)

)

G

)

)

m

m

)

m

m

l

m

m

m

m

m

m

)

)

x

)

ViewSonic Model Number: VS11349

Serial No. Prefix: QA5 Rev: 1a

Item Description 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
11

Cables:

12
13
14
15
16

Documentation:

17
18
19

Hardware:

20
21
22
23
24
25
26

Miscellaneous:

27

Packing Material:

28
29
30
31

Plastics:

Remark 1:
Remark 2:

RECOMMENDED SPARE PARTS LIST (VX2235wm-1)

Power Cord
Power Supply Board (Lips With Audio, V0.7
Main Board Rev.04
PCBA Rev.02,ODM
Cover Hinge (Right
Cover Hinge (Left
Front Panel (Bezel
Back Cove
Base Assembly (Stand Assy
Cover (Seat Assy)
DVI Cable, S/L, 1.8M, W/2F
Audio Cable (Accessory Black, 28AWG
Accessory Cable,D-Sub, 30AW
Flat Cable (FFC 36 Pins
Flat Cable (FFC 15 Pins
Safety Label 149 mmx29 m
Carton Label 76.2 mmx76.2 m
CD-Rom (Menu
SCREW,3,P=0.5 mm,L=4 m
SCREW,3,P=0.5 mm,L=4 m
Screw,M3*P0.5*6,Stee
Screw, M4, P=0.7 mm, L=8 m
SCREW,4,P=0 mm,L=11.8 m
SCREW M3,P=0.5 mm,L=2.5 m
SCREW M3,P=1.27 mm,L=10 m
Tape,A170E1-H0P,900 mmx50 mmx0 m
PE Bag,600 mmx650 mmx0.13 m
Craft Foam (Top
Craft Foam (Bottom
Carft Bo
Panel Cover (Panel Protector Film

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.

A-00005071 32-D002330 1
B-00008026 27-D009542 1
B-00008027 35-D010627 1
B-00008028 35-D010238 1
C-00008039
C-00008040
C-00008041
C-00008042
C-00008043

C-00008044
CB-00002083 32F0000004 1
CB-00005678 32F2818011 1
CB-00005851 32-D002132 1
CB-00008014 32-D008479 2
CB-00008015 32-D011077 1
DC-00008038 77-D010937 1
DC-00008039 77-D010936 1
DC-00008040 76-D011105 1

HW-00000553 42A9930008 13
HW-00000553 42A9930008 2
HW-00000555 42A9930014 6
HW-00004042 42-D000649 1
HW-00006041 42A9940007 4
HW-00008002 42-D009237 3
HW-00008003 42A9930015 1

M-00000560 7345511002 0.05

P-00008033 78-D009624 1

P-00008034 78-D011076 1

P-00008035 78-D011075 1

P-00008036 78-D011103 1
PL-00008008 73-D009538 1

40-D010946
40-D010960
40-D010959
40-D010948
40-D010942
40-D010947

1
1
1
1
1
1

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

62

BOM LIST (VX2235wm-1)

ViewSonic Model Number: VS11349
Rev: 1a

Serial No. Prefix: QA5

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

1 N/A

2 N/A
3 N/A L4M003XXXX 22"wide_TN, Photo Spacer , Corning 0.7mm Glass , Resin/BM(Panel Base) 1
4 N/A L4M003XXBI 22"wide_TN, Photo Spacer , Corning 0.7mm Glass , Resin/BM(Sheet Base) 0.0833

5 N/A

6 N/A

7 N/A
8 N/A 73-D008216 ACF, COF, AC-4255U-16, 200000 mmx1.2 mm, Hitachi Chemical, Green II 0.0025

9 N/A 73-D002676 ACF, PCB, AC-9825R-35, 100000 mmx1.5 mm, Hitachi Chemical, PCB-ACF, Green I 0.005
10 N/A 35-D010045 PCBA for , A220Z1-Z01-H, A220Z1-Z01-H-X, 1101-03, Rev.04, USI/ITC, ODM, Green II 1
11 N/A 7349951002 Silicone, TORAY/-9187L, 330g 0.5
12 HW-00008003 42A9930015 SCREW, M3, P=1.27 mm, L=10 mm, Pan Head, Phillips Cross Recess, Green I 1
13 B-00008028 35-D010238 PCBA for , A220Z1-Z01-H, A220Z1-Z01-H-K2, 1101-02, Rev.02, USI/ITC, ODM, Green II 1
14 C-00008039 40-D010946 Cover Hinge, A220Z1-H05, ABS PA-757N, ORIGINAL, Fuking, RIGHT, Green II 1
15 C-00008040 40-D010960 Cover Hinge, A220Z1-H05, ABS PA-757N, ORIGINAL, Fuking, LEFT, Green II 1
16 C-00008041 40-D010959 Bezel Assy, A220Z1-H05, Black(J01-J91A11B5), Fuking, SPK, Green II 1
17 C-00008042 40-D010948 Rear Assy, A220Z1-H05, Silver(TY4818A)/Black(M1077), Fuking, audio_in+DVI-D, Green II 1
18 CB-00008015 32-D011077 FFC, FFC1DDX-A186S1A, 15 Pins, Tennsure_FFC, A220Z1-H05, Green II 1

19 HW-00000553

20 HW-00000555
21 C-00008043 40-D010942 Stand Assy, A220Z1-H05, Silver(TY4818A), Hontech, Green II 1
22 PL-00008008 73-D009538 Panel Protector Film, A220Z1-H03, XG-536 T=0.1mm, Just Enter, BLANK 1

23 N/A
24 DC-00008038 77-D010937 Safety Label for , A220Z1-H05, 149 mmx29 mm, Chang Huang, VSC_VX2235wm, Green II 1
25 HW-00002076 7841595111 Corner Protector, paper, 50 mmx50 mmx1850 mm, Green II 0.083

26 N/A
27 DC-00000586 7741999141 Module Label, A190E2-H03, 75 mm, 40 mm, Non Green 0.042
28 M-00000560 7345511002 Tape, A170E1-H0P, 900 mmx50 mmx0 mm, Symbio, OPP 0.005
29 N/A 73-D001327 Tape, 82296 mmx48 mmx0.045 mm, cmo, OPP, Green I 0.014

30 N/A
31 P-00008033 78-D009624 Bag, 600 mmx650 mmx0.13 mm, PE Foam, 650, Huang Jyii, Green II 1

32 DC-00008039
33 C-00008044 40-D010947 Seat Assy, A220Z1-H05, Black(ABS-757-J01)/Siliver(TY4818A), Hontech, Green II 1
34 N/A 79-D011065 Shipping Package Information for , A220Z1-H05, VSC 1

35 P-00008034

36 P-00008035
37 P-00008036 78-D011103 Carton, A220Z1-H05, 522 mmx154 mmx575 mm, Chen Yi Paper, VSC_VX2235wm, Green II 1

38 DC-00008040

39 HW-00000553

40 HW-00006041

41 HW-00004042
42 N/A 41-D007402 Metal Frame Front, M220Z1-L01, SECC 0.6t, Fomgder/CLT_Metal, Green II 1
43 N/A 44-D008027 Backlight Unit, A220Z1, Forhouse/ROE, Green II 1
44 N/A 41-D008024 Cover AD Assy, A190A2, SECC, Jiin Ming, Left_Side 4 connector_VESA100*100, Green II 1
45 CB-00008014 32-D008479 FFC, CFC2128/862P060068D, 36 Pins, Tennsure/Hung Fu, AL foil, Green I 2
46 HW-00008002 42-D009237 SCREW, M3, P=0.5 mm, L=2.5 mm, Pan Head, Phillips Cross Recess, Shye Ching, Green II 3

47 B-00008026

48 B-00008027

49 N/A

50 N/A

51 N/A
52 CB-00002083 32F0000004 Accessory Cable, DVI, Black, Jceprocable, DVI-D(M) TO DVI-D(M), S/L, W/2F, Green I 1
53 CB-00005678 32F2818011 Accessory Cable, Audio, Black, Jhen Vei, A170E1-H01, 28AWG, Green I 1

54 CB-00005851

55 A-00005071

73-C000047

36-D006411

74-D007599

74-D007598

36-D007038

42A9930008

42A9930014

77-D010938

7841996911

78-D003113

77-D010936

78-D011076

78-D011075

76-D011105

42A9930008

42A9940007

42-D000649

27-D009542

35-D010627

10-D011770

10-D011769

10-D012223

32-D002132

32-D002330

ACF, COG, AC-8405Z-23 1.5mmX100M, 100000 mmx1.5 mm, Hitachi Chemical, COG-ACF, Green
I
Driver IC, COG, Scan, M170E5-L09, HX8653-A000PD400, 240/263/256Channel, Himax, (HX8633
shrank version), Green II

Polarizer, TFT, Degree 135, 478.16 mmx300.2 mmx0.215 mm, XT300CMM220Z1H0B, M220Z1,
LG Chem, LG HCR EWV
Polarizer, CF, Degree 135, 480.76 mmx303.1 mmx0.215 mm, XT320CMM220Z1H0T, M220Z1, LG
Chem, LG HCR EWV
Driver IC, COF, Data, M220Z1-L01, HX8019-A07BCBC5, COF, 6 bit, 642Channel, Himax, Green II

SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka Motogawa/Shin
Yee/Hama Naka Shoukin/Shiho/Shye Ching, Green I
SCREW, 3, P=0.5 mm, L=6 mm, Pan Head, Phillips Cross Recess, Hama Naka Shoukin/Shye
Ching/Hama Naka Motogawa/Shin Yee, NA, Green I

SN Label for , A220Z1-H05, 50 mmx25 mm, Chang Huang/Kunshan Hwakuan, VSC_VX2235wm,
Green II

Separator, (AA), A190E2-H04, 1200 mmx1050 mmx11 mm, Shanghai Zhung Hao/Hua Sun Paper,
ACER, Non Green

Pallet, A190E3-H02_acer, Wooden, (KD-HT), 1209 mmx1066 mmx135 mm, Hua Sun
Paper/Shanghai Hang Wei/Ming Li, Green I

Carton Label for , A220Z1-H05, 76.2 mmx76.2 mm, Chang Huang/Kunshan Hwakuan,
VSC_VX2235wm, Green II

Cushion, A220Z1-H05, EPS, White, 565 mmx520 mmx75 mm, Li Ta, EPS-FORM(Top), Green II

Cushion, A220Z1-H05, EPS, White, 565 mmx520 mmx65 mm, Li Ta, EPS-FORM(Bottom), Green II

MENU for A220Z1-H05, Complex, 4C, Yi Ching/Car Tong Kunshan, VSC_VX2235wm CD-ROM,
Green II
SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka Motogawa/Shin
Yee/Hama Naka Shoukin/Shiho/Shye Ching, Green I
SCREW, 4, P=0 mm, L=11.8 mm, Hexagon Stand Off, Socket, Hama Naka Motogawa/Shiho/Shin
Yee/Shye Ching, Green I
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 With Audio, DAC-19M009 AF, 00 A, 5 V/3 A, 13.8 V0.7 A, I TYPE, 7 mA, 1710 V, Delta
Dongguan_LIPS, Green II
PCBA for , A220Z1-Z01-H, A170E2-E03-H-S6, 1101-02, Rev.04, ITC/USI, ODM, RTD2120S-LF,
Green II
Software (EDID_DVI), A220Z1, VSC591ED01, ViewSonic, Checksum(6A), VX2235wm, Digital
Port, Green II
Software (EDID_D-SUB), A220Z1, VSC591EA01, ViewSonic, Checksum(15), VX2235wm, Analog
Port, Green II
Software (BIOS), A220Z1, 22Z1LR3002, ViewSonic, Checksum(Bank1:0xEC, Bank2:0xD5),
RSDS, RTD2120, Dual+Audio/Analog+Audio, Green II

Accessory Cable, D-Sub, JV-4777, Black, Pins-Pins, Jhen Vei, 30AWG, Reduce Shield Rate, Green I

Power Cord, LP-53 & VCTF 0.75mm^2 3C 6 BLACK & LS-13J, BLACK, BSMI, 1800 mm, Linetek,
Green I

0.0028

4

1

1

8

2

6

1

0.021

0.021

1

1

1

1

13

4

1

1

1

1

1

1

1

1

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

63

8. Exploded Diagram and Exploded Parts List

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

64

EXPLODED PARTS LIST (VX2235wm-1)

ViewSViewSonic Model Number: VS11349
Rev: Rev: 1a

SerialSerial No. Prefix: QA5

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

1 C-00008040 40-D010960
2 C-00008039 40-D010946
3 N/A
4 N/A PM0ZFH0R00
5 N/A
6 N/A
7 CB-00008015
8 C-00008043

9 C-00008044
10 N/A 44-D009236
11 N/A N/A
12 N/A 27-D008552
13 N/A 35-D009418
14 N/A
15 N/A
16 HW-00008002 42-D009237
17 HW-00000553 42A9930008
18 HW-00004042 42-D000649
19 HW-00000553 42A9930008
20 N/A
21 HW-00000555 42A9930014
22 HW-00008003

40-D010955 REAR_ASSY_22W15 1

40-D010955 BEZEL_ASSY_22W15 1

35-D0110238 PCBA_A220Z1-Z01-H-K2 1

32-D011077 FFC_15pin 1
40-D010942 STAND_ASSY_22W15 1
40-D010947 SEAT_ASSY_22W15 1

41-D008024 Cover AD Assy 1
32-D009479 FFC,36pin 2

42A993008 SCREW,M3,P=0.5mm,L=5mm,Pan Head 2

42A9930015 SCREW,M3,P=1.27mm,L=10mm,Pan Head 1

COVER_HINGE_LEFT_22W15 1
COVER_HINGE_RIGHT_22W15 1

22" Wide,Monitor,D-Sub+DVI+Audio 1

Backlight Unit,A220Z for MFM 1
Maylar 1
Lips Without Audio,DAC-19M009 BF 1
PCBA for A220Z1-Z01-P 1

SCREW,M3,P=0.5mm,L=2.5mm,Pan Head 3
SCREW,M3,P=0.5mm,L=4mm,Pan Head 7
SCREW,M4,P=0.7mm,L=8mm,Round Head 1
SCREW,M3,P=0.5mm,L=4mm,Pan Head 4

SCREW,M3,P=0.5mm,L=8mm,Pan Head 6

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

65

PACKING PART LIST ( VX2235wm-1 )

ViewSonic Model Number: VS11349
Rev: 1a

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

1 N/A VX2235wm LCD Monitior 1
2 P-00008033 78-D009624 PE Foam Bag 1
3 P-00008036 78-D011103 Carton 1
4 P-00008035 78-D011075 EPS Foam (Bottom) 1
5 P-00008034 78-D011076 EPS Foam(Top) 1
6 C-00008044 40-D010947 Seat Assy 1
7 A-00005071 32-D002330 Power Cord 1
8 CB-00005851 32-D002132 Monitor Cable 1

9 CB-00005678 32F2818011 Audio Cable 1
10 CB-00002083 32F0000004 DVI Cable 1
11 DC-00008040 76-D011105 Menu (Quick Setup) 1
12 N/A Different region (refer to BOM) Customer Label 1
13 N/A Different region (refer to BOM) Warranty Registration card 1

ViewSonic Corporation

66

Confidential - Do Not Copy VX2235wm-1

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

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

67

10. Schematic Diagrams

B5

V5A

V33S

05_INTERFACE

MCU1

MUTE

DCDC_ON/OFF

AUDIO_FUNCTION

03_MCU

V5A

MUTE
DCDC_ON/OFF

AUDIO_FUNCTION
INV_ON/OFF

PWR_SW

LED_GRN

LED_ORG

INV_ON/OFF

CONNECT

VGA_5V

LED_ORG
LED_GRN

KEY_UP

AUTO_ADJ

KEY_DOWN

PANEL_ON/OFF

SOURCE_SELECT

DDC2_SCL

DDC2_SDA

BUS_POWER

RESET_RTD

MENU

RTD_SDIO0
RTD_SDIO1
RTD_SDIO2
RTD_SDIO3

RTD_SCSB

RTD_SCLK

RESET_MCU

DDC_DAT
DDC_CLK

PWR_SW
PANEL_ON/OFF
AUTO_ADJ
SOURCE_SELECT
KEY_UP
KEY_DOWN
MENU

YOUT

MUTE

DCDC_ON/OFF

AUDIO_FUNCTION

RESET_RTD

BUS_POEWR

DDC2_SCL
DDC2_SDA

CONNECT
VGA_5V

V5A

INV_ON/OFF

LED_ORG

LED_GRN

RTD_SDIO0
RTD_SDIO1
RTD_SDIO2
RTD_SDIO3

RTD_SCSB
RTD_SCLK

YOUT
RESET_MCU

DDC_DAT
DDC_CLK

SOURCE_SELECT

PWR_SW

AUTO_ADJ

PANEL_ON/OFF

MENU

KEY_DOWN

KEY_UP

B4

RESET_RTD

RTD_SDIO0
RTD_SDIO1
RTD_SDIO2
RTD_SDIO3

RTD_SCSB
RTD_SCLK

YOUT
RESET_MCU

DDC_DAT
DDC_CLK

BCKP

BCKN

BCKN

FCKP

BCKP

BCKN

BCKP

B3

BUS_POEWR

DDC2_SCL
DDC2_SDA

FCKP

FCKN

FCKP

FCKN

FCKN

BB2P

BB2P

BB2N

BB2P

BB2N

BB1P

BB2N

BB1P

BB1N

BB1P

BB1N

BB0P

BB1N

BB0P

BB0N

BB0P

BB0N

BB0N

02_DVI

BG2P

BG2P

BG2N

BG2P

BG2N

BG1P

BG2N

BG1P

BG1N

BG1P

BG1N

BG0P

BG1N

BG0P

BG0N

BG0P

RX2P

BG0N

BG0N

RX2P

RX2N

RX2P

BR2P

RX2N

RX1P

RX2N

V33S

BR2P

BR2N

BR2P

RX1P

RX1N

RX1P

BR2N

BR1P

BR2N

RX1N

RX0P

RX1N

BR1P

BR1N

BR1P

RX0P

RX0N

RX0P

BR1N

BR0P

BR1N

RX0N

RXCP

RX0N

BR0P

BR0N

BR0P

RXCP

RXCN

RXCP

BR0N

BR0N

RXCN

RXCN

FB1P

FB2N

FB2P

FB2N

FB1N

FB2P

FB1P

FB1P

FB2N

FB2P

04_SCALER

FB1N

FB0P

FB1N

FB0P

FB0N

FB0P

FB0N

FB0N

FG2P

FG2P

FG2N

FG2P

FG2N

FG1P

FG2N

FG1P

FG1N

FG1P

FG1N

FG0P

FG1N

B2

FG0P

FG0N

FG0P

FG0N

FG0N

FR2P

FR2N

FR2P

FR2N

FR2N

FR2P

DDC_CLK

FR1P

FR1P

FR1N

FR1P

DDC_DAT

FR0N

FR0P

FR1N

FR0N

FR0P

FR1N

FR0N

FR0P

CONNECT

VGA_5V

STB

POL

STB

STB

01_VGA

INV_ADJ

VOL_ADJ

BSTHI

FSTHI

GVON

GVOFF

VCM_PWM

OE

CKV

STV

POL

GVOFF

INV_ADJ

FSTHI

OE

STV

CKV

VOL_ADJ

GVON

VCM_PWM

BSTHI

OE

STV

POL

CKV

GVON

FSTHI

BSTHI

GVOFF

INV_ADJ

VOL_ADJ

VCM_PWM

V18_ESD

V33S

RIN

GIN

BIN

SOG

GNDR

GNDG

GNDB

HSYNC

VSYNC

GNDB

GIN

BIN

SOG

HSYNC

VSYNC

VSYNC

HSYNC

GNDG

GNDB

GNDR

GNDG

SOG

GNDR

V18_ESD

RIN

BIN

GIN

V18_ESD

RIN

V33S

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

68

ViewSonic Corporation

Model

Title

DIAGRAM

Date Rev:

DDC_DAT

DDC_CLK

VGA_5V4

RAI+

11

6
2

12

HSI

VSI

CONNECT4

7
3

13

8
4

14

9
5

15

10

CON1CON1

GND_POWER

V1V1

GAI+
BAI+

R4R4

GND_POWER

1 2

RAI­GAI­BAI-

Z1Z1

GND_POWER

GND_POWER

GND_POWER

GAI+

GND_POWER

RAI+

1

32

1

32

1

32

1

FB1FB1

1 2

FB2FB2

1 2

FB3FB3

1 2

R2R2

R8R8

R11R11

D1D1

RAI-

C4C4

D2D2

GAI- GNDG

C8C8

D3D3

C12C12

C2C2

C6C6

C10C10

R1R1

R3R3

R5R5

R6R6

R9R9

R10R10

R12R12

C1C1

C3C3

C5C5

C7C7

C9C9

C11C11

GNDR

GIN

GNDBBAI-

RIN

RIN 5

GNDR 5

CA1CA1

GIN 5

GNDG 5

BINBAI+

BIN 5

GNDB 5

SOG

R7R7

GND_POWER

SOG 5

RIN

1

TP

TP1TP1

GNDR

1

TP

TP2TP2

SOG

1

TP

TP3TP3

GIN

1

TP

TP4TP4

GNDG

1

TP

TP5TP5

BIN

1

TP

TP6TP6

GNDB

1

TP

TP7TP7

GND_POWER

Z2Z2

1 2

GND_POWER GND_POWER

VSI

Z3Z3

1 2

GND_POWER

DDC_CLK DDC_DAT

V2V2

GND_POWER GND_POWER

R15R15

GND_POWER GND_POWER

R14R14

C14C14

R13R13

C13C13

VSYNC 5 HSYNC 5

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

69

HSI

V18_ESD 5

Z4Z4

1 2

GND_POWER

HSYNC

1

TP

TP8TP8

L1L1

V3V3

R16R16

R17R17

DDC_DAT 4,5DDC_CLK 4,5

C15C15

GND_POWERGND_POWER

TP9TP9

TP10TP10

TP11TP11

VSYNC

1

TP

DDC_CLK

1

TP

DDC_DAT

1

TP

ViewSonic Corporation

Model

Title

VGA

Date Rev:

RX0PDATA0+

D4D4

32

1

RX0P 5

D5D5

32

1

RX0NDATA0-

RX0N 5

C16C16

CON2CON2

25

R

26

G

27

B

29

RGB GND

28

HSYNC

8

VSYNC

DDC SCL
DDC SDA

HPD

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

DAT0+

DAT0-

DAT1+

DAT1-

DAT2+

DAT2-

DAT3+

DAT3-

DAT4+

DAT4-

DAT5+

DAT5-

+5V

clk+

clk-

15
6
7
14
16

11
3
19
22

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

GND_POWER

DDC2_SCL
DDC2_SDA

DATA0+
DATA0­DATA1+
DATA1­DATA2+
DATA2-

CLK+
CLK-

Z5Z5

1 2

DDC2_SCL 4
DDC2_SDA 4

R18R18

CLK+ RXCNCLK-RXCP

SYNC GND

BUS_POEWR4

D6D6

32

1

C18C18

D8D8

32

1

C20C20

D10D10

32

1

C22C22

GND_POWER

RX1PDATA1+ DATA1- RX1N

RX2P

RX1P 5 RX1N 5

RX2P 5 RX2N 5

C17C17

D7D7

32

1

C19C19

RX2NDATA2-DATA2+

D9D9

32

1

C21C21

D11D11

32

1

C23C23

RXCN 5RXCP 5

GND_POWER

V33S5,6

C24C24

Z6Z6

GND_POWER

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70

ViewSonic Corporation

Model

Title

DVI

Date Rev:

DDC_CI_5V

D12D12

BUS_POWER

V5A

D13D13

1 2

1 2

R21R21

GND_POWER

785

6

RP1RP1

312

4

U1U1

3

DDC2_SDA3
DDC2_SCL3

DDC_CLK2,5
DDC_DAT2,5

DDC_CI_5V

11

14

C25C25

GND_POWER

2

1B

1A

6

5

2B

2A

8

9

3B

3A

12

4B

4A

1

1OE

4

2OE

10

VCC

3OE

7

13

GND

4OE

DDC_CLK_OUT
DDC_DAT_OUT

R19R19

DDC_CI_5V

R20R20

32

Q2Q2

1

VGA_5V2

BUS_POWER3

V5A6

DDC_CI_SEL

Q1Q1

1

MCU_VCC

32

D14D14

1 2

DDC_CI_5V

D15D15

1 2

12

D16D16

GND_POWER

785

C26+C26

312

4

6

GND_POWER

BUS_POWER

R36R36

R41R41

GND_POWER

PANEL_ON/OFF6

DCDC_ON/OFF6

MCU_VCC

R30R30

R33R33

GND_POWER

GND_POWER

R23R23

GND_POWER

GND_POWER

32

Q4Q4

1

INV_ON/OFF6

AUDIO_FUNCTION6

U3

1

A0

2

A1

3

A2
GND4SDA

R22R22

32

Q3Q3

CONNECT2

MUTE6

DDC2_SCL3
DDC2_SDA3

RESET_RTD5

LED_GRN6
LED_ORG6

DDC_DAT2,5
DDC_CLK2,5

TEST

SEEPROMU3SEEPROM

RP3RP3

312

1

RP5RP5

5

4
3

6
7

2

8

1

R27R27
R31R31

R35R35
R34R34

MCU_VCC

8

VCC

7
6

SCL

5

C27C27

IICSCL
IICSDA

4

RP4RP4

785

6

R29R29

R39R39

R38R38

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

71

3.1~3.6V

+

R24R24

D18D18

1 2

12

D17D17

P50

2

DA0/P5.0

P51

3

DA1/P5.1

P52

4

DA2/P5.2

P53

5

DA3/P5.3

P54

6

DA4/P5.4

P55

7

DA5/P5.5

P56

8

P5.6/HSCL2

P57

9

P5.7/HSDA2

P32DDC_CI_SEL

14

P3.2/INT0

P33

15

P3.3/INT1

P34

16

P3.4/T0

P35

17

P3.5/T1

P76

18

P7.6/CLKO2

P77

19

P7.7

P31DDC_DAT_OUT

13

HSDA1/P3.1/TXD

P30DDC_CLK_OUT

HSCL1/P3.0/RxD11XTAL220XTAL121VSS

U2U2

2

C28C28

RESET_MCU 5

RST

10

Y1Y1

R40R40

C29C29

GND_POWER

312

4

RP2RP2

785

6

IICSCL
IICSDA

RTD_SCSB

R25R25

P13

VCC

44

RST

VCC

P11

P12

P14

P10

43

P1.142P1.241P1.340P1.439P1.538P1.637P1.7

P1.0/ET2

P6.6/CLOK1

P6.3/AD3
P6.2/AD2
P6.1/AD1
P6.0/AD0

P15

VSYNC

P17

P16

36

1

NC

33

NC

34

NC

35

NC

12

NC

23

NC

32

MENU_ISPP67

31

P6.7

P66

30

P65

29

P6.5

P64

28

P6.4

P63

27

P62

26

P61

25

P60

24

R26R26

MENU 6
YOUT 5
KEY_DOWN 6
KEY_UP 6
SOURCE_SELECT 6
AUTO_ADJ 6
PWR_SW 6

22

X2

X1

VSS

VCCVSS

RST

4

DA0/P5.0
DA1/P5.1
DA2/P5.2
DA3/P5.3
DA4/P5.4
DA5/P5.5
P5.6/HSCL2
P5.7/HSDA2

HSCL1/RXD/P3.0
HSDA1/TXD/P3.1

P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P7.6/CLKO2
P7.7

U4

U4

15

NC/MTV512/RoHS

NC/MTV512/RoHS

X2

41

RST

VCC

VSS17X2

X1

16

X1

P50

44

P51

45

P52

46

P53

47

P54

48

P55

1

P56

2

P57

3

P30

5

P31

8

P32

9

P33

10

P34

11

P35

12

P76

13

P77

14

RTD_SCLK

P10

40

NC6NC

7

P11

P12

P13

P14

P15

P1.139P1.238P1.337P1.436P1.535P1.634P1.7

P1.0/ET2

P6.6/CLKO1

NC

NC

19

18

42

RTD_SCSB 5
RTD_SCLK 5

GND_POWER

P16

P17

33

NC
NC
NC
NC

VSYNC

P6.7
P6.5

P6.4
P6.3/AD3
P6.2/AD2
P6.1/AD1
P6.0/AD0
NC43NC

V5A

12

D19D19

R32R32

R37R37

32
31
30
29

28

P67

27

P66

26

P65

25

P64

24

P63

23

P62

22

P61

21

P60

20

ViewSonic Corporation

RTD_SDIO0 5

RTD_SDIO1 5

RTD_SDIO2 5

RTD_SDIO3 5

Model

Title

MCU

Date Rev:

V33S

1

Q5Q5

YOUT4

3 2

XI

V18C

V33S

1 2

FB5FB5

GND_POWER

VOL_ADJ6

RX2P3
RX2N3
RX1P3
RX1N3
RX0P3
RX0N3
RXCP3
RXCN3

VSYNC2
HSYNC2

RIN2
GIN2
BIN2

SOG2
GNDR2
GNDG2
GNDB2

RX2P
RX2N
RX1P
RX1N
RX0P
RX0N
RXCP
RXCN

AVS
AHS

R+
G+
B+
SOG
R­G­B-

R47R47

(PWM0)

V33S

1 2

FB6FB6

V18_ESD2

V18C

1 2

FB7FB7

V33S

R52R52

R75R75

23

Q6Q6

C35C35

C34C34

R45R45

R46R46

PLL_TEST1

PLL_TEST2

TMDS_TEST

R49R49

R48R48

TMDS_V33

C36C36

GND_POWER

C38C38

GND_POWER

R53R53

BJT_B

BJT_B

1

23

Q14Q14

1

C37C37

C39C39

DDC_CLK2,4
DDC_DAT2,4

RX1P
RX1N

RX0P
RX0N

RXCP
RXCN

AVS

B+
B­SOG
G+
G­R+
R-

FSTHI6

INV_ADJ6

VCM_PWM6

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72

1 2

FBS1FBS1 C30C30

XI

RX2P
RX2N

R50R50
R51R51

POL6
STB6
STV6

CKV6

OE6

GND_POWER

U5U5

127

XO

128

XI

125

DPLL_VDD

126

DPLL_GND

1

APLL_GND

2

APLL_VDD

3

PLL_TEST1 / TCON0 / TCON3

4

PLL_TEST2 / TCON1 / TCON12

5

TMDS_TST / PWM0 / TCON2

6

REXT

7

TMDS_VDD

8

RX2P

9

RX2N

10

TMDS_GND

11

RX1P

12

RX1N

13

TMDS_VDD

14

RX0P

15

RX0N

16

TMDS_GND

17

RXCP

18

RXCN

19

AVS0

20

AHS0

21

ADC_VDD

22

ADC_GND

23

B0+

24

B0-

25

SOG0

26

G0+

27

G0-

28

R0+

29

R0-

30

B1- / V7

31

B1+ / V6

32

G1- / V5

33

G1+ / V4

34

SOG1 / V3

35

R1- / V2

36

R1+ / V1

37

ADC_GND

38

ADC_VDD

39

AHS1 / V0

40

AVS1 / VCLK

TCON13
TCON7
TCON11
TCON0
TCON12
TCON3

R54R54

PWM:230~300Hz(PWM1)

R55R55

C31C31

46

117

47

116

VCCK

VCCK

GNDK

GNDK

DDCSCL1 / TCON4

DDCSDA1 / TCON951SCLK / TCON3

SDIO[3] / TCON0

SDIO[2] / TCON11

SDIO[1] / TCON7

SDIO[0] / TCON1352PWM1 / TCON0 / COUT

50

SCSB / TCON1256PWM2 / TCON1/TCON7

57

55

54

53

PWM:47KHz(PWM2)

108

PVCC59PVCC72PVCC83PVCC95PVCC

PGND60PGND71PGND84PGND96PGND

BJT_B58BB3P/BBLU761BB3N/BBLU662BB2P/BBLU563BB2N/BBLU464BB1P/BBLU365BB1N/BBLU266BCLKP/BGRN7

48

49

C33C33

GND_POWER

107

33VRST_REF

RESET_OUT

TCON9 / PWM0

DDCSCL2 / VCLK / TCON4

DDCSDA2 / V7 / TCON6

SCLK / V6 / TCON3

SCSB / V5 / TCON7
SDIO[3] / V4 / TCON9
SDIO[2] / V3 / TCON5
SDIO[1] / V2 / TCON8

SDIO[0] / V1 / TCON10

V0 / TCON2

TCON13 / COUT

33VPNLOUT

AR1N
AR1P
AR2N
AR2P
AR3N
AR3P
AG1N
AG1P
AG2N
AG2P

AG3N / TXO0-

AG3P / TXO0+

ACLKN / TXO1-

ACLKP / TXO1+

AB1N / TXO2­AB1P / TXO2+
AB2N / TXOC-

AB2P / TXOC+

AB3N / TXO3­AB3P / TXO3+

BR1N / TXE0­BR1P / TXE0+

BR2N / TXE1­BR2P / TXE1+

BR3N / TXE2­BR3P / TXE2+
BG1N / TXEC-

BG1P / TXEC+

BG2N / TXE3­BG2P / TXE3+

BCLKN/BGRN6

BG3P/BGRN5

BG3N/BGRN4

67

68

69

70

B_G2N
B_G2P
B_CKN
B_CKP
B_B0N
B_B0P
B_B1N
B_B1P
B_B2N
B_B2P

V33S

1 2

FB4FB4C32C32

R28R28

124
123
122
121
120
119
118
115
114
113
112
111
110
109

106
105
104
103
102
101
100
99
98
97

94
93
92
91
90
89
88
87
86
85

82
81
80
79
78
77
76
75
74
73

A_R0N
A_R0P
A_R1N
A_R1P
A_R2N
A_R2P
A_G0N
A_G0P
A_G1N
A_G1P

A_G2N
A_G2PAHS
A_CKN
A_CKP
A_B0N
A_B0P
A_B1N
A_B1P
A_B2N
A_B2P

B_R0N
B_R0P
B_R1N
B_R1P
B_R2N
B_R2P
B_G0N
B_G0P
B_G1N
B_G1P

RTD_SCLK 4
RTD_SCSB 4
RTD_SDIO3 4
RTD_SDIO2 4
RTD_SDIO1 4
RTD_SDIO0 4

R42R42

2.5V

RESET_RTD 4

TCON9
TCON4

TCON2

A_R0N
A_R0P

A_R1N
A_R1P

A_R2N
A_R2P

A_G0N
A_G0P

A_G1N
A_G1P

A_G2N
A_G2P

A_CKN
A_CKP

A_B0N
A_B0P

A_B1N
A_B1P

A_B2N
A_B2P

B_R0N
B_R0P

B_R1N
B_R1P

B_R2N
B_R2P

B_G0N
B_G0P

B_G1N
B_G1P

B_G2N
B_G2P

B_CKN
B_CKP

B_B0N
B_B0P

B_B1N
B_B1P

B_B2N
B_B2P

RESET_MCU 4
GVOFF 6

GVON 6

BSTHI 6

GND_POWER

BB2P 6
BB2N 6

BB1P 6
BB1N 6

BB0P 6
BB0N 6

BG2P 6
BG2N 6

BG1P 6
BG1N 6

BG0P 6
BG0N 6

BCKP 6
BCKN 6

BR2P 6
BR2N 6

BR1P 6
BR1N 6

BR0P 6
BR0N 6

FB2P 6
FB2N 6

FB1P 6
FB1N 6

FB0P 6
FB0N 6

FG2P 6
FG2N 6

FG1P 6
FG1N 6

FG0P 6
FG0N 6

FCKP 6
FCKN 6

FR2P 6
FR2N 6

FR1P 6
FR1N 6

FR0P 6
FR0N 6

R74R74

V33S 3,6

R43R43

R44R44

ViewSonic Corporation

Model

Title

SCALER

Date Rev:

CN3CN3

[INV_GND]

10
11
12
13
14
15
16

1
2
3
4

AUDIO_DISABLE_INPUT

5

MUTE_INPUT

6

VOL_ADJ_INPUT

7
8
9

INV_ON/OFF_INPUT
INV_ADJ_INPUT

B4B4

1 2

B5B5

1 2

B6B6

1 2

SOURCE_SELECT4

LED_G
LED_O

AUDIOR­AUDIOR+
AUDIOL­AUDIOL+

TP12TP12

TP

1

C45C45

(PANEL VCC)

V33D

C46C46

AUDIOL+
AUDIOL­AUDIOR+
AUDIOR-

C44C44

GND_POWER

V5A1V5A1

TP

1

5.0V

12

C41C41

V5A 4

R56R56

V12A

V12V1V12V1

F1F1

TP

1

B2B2

1 2

V5A

C40C40

V5A V33D

1 2

B1B1

C42C42

U6U6

VI(5V)

GND_POWER

1

VO(3.3V)
VO(3.3V)

GND

2
4

3

C43C43

V5A

12V

AUDIO_FUNCTION 4

V33S

R58R58

32

Q9Q9

C47C47

1

GND_POWER

V33S

R60R60

GND_POWER

MENU

MENU4

KEY_DOWN4

KEY_DOWN
KEY_UP

KEY_UP4

SOURCE_SELECT
AUTO_ADJ

AUTO_ADJ4

PWR_SW

PWR_SW4

L3L3
L2L2
L5L5
L4L4

LP1LP1

1
2
3
4
1
2
3
4

LP2LP2

C52C52

8
7
6
5
8
7
6
5

4

CP1CACP1

CA

D5C6B7A

8

32

Q10Q10

1

GND_POWER

4

CP2CACP2

A1B2C3D

A1B2C3D

CA

D5C6B7A

8

INV_ON/OFF 4

INV_ADJ 5

MENU
KEY_DOWN
KEY_UP
SOURCE_SELECT
AUTO_ADJ
LED_O
LED_G
PWR_SW

GND_POWER

VOL_ADJ5

CN4CN4

15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

AUTO_ADJ1AUTO_ADJ1

GVOFF1GVOFF1

R59R59

1

1

TP

MENU1MENU1

1

TP

1

TP

BSTHI1BSTHI1

1

TP

OE1OE1

1

TP

R57R57

1

32

3 2

Q7Q7

V5A

R61R61

R62R62

32

Q11Q11

GND_POWER

KEY_DOWN1KEY_DOWN1

PWR_SW1PWR_SW1

FSTHI1FSTHI1

POL1POL1

GVON1GVON1

KEY_DOWN

1

TP

1

TP

1

TP

1

TP

1

TP

MENU

AUTO_ADJ PWR_SW

GVOFF

Q8Q8

GND_POWER

C53C53

FSTHIBSTHI

POL

GVON

1

VR

KEY_UP1KEY_UP1

LED_O1LED_O1

STV1STV1

STB1STB1

MUTE 4

KEY_UP

1

TP

LED_O LED_G

1

TP

STV

1

TP

STB

1

TP

VCM_PWM1VCM_PWM1

TP14TP14

LED_G1LED_G1

CKV1CKV1

TP

TP

TP

TP

SOURCE_SELECT

1

1

CKV

1

VCM_PWMOE

1

TP13TP13

V33S

TP

1

V33S

V33S 3,5

(SCALER VCC)

C50C50

C51C51

R63R63
R64R64

BR0N
BR0P
BR1N
BR1P
BR2N
BR2P

BG0N
BG0P
BG1N
BG1P
BG2N
BG2P

BB0N
BB0P
BB1N
BB1P
BB2N
BB2P

GND_POWER

U7U7

3

C49C49

2

VO(3.3V)

VI(5V)

4

VO(3.3V)

GND

1

GND_POWER

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

CN1CN1

D20D20

1 2

V12A

+

B3B3

1 2

C48C48

C54+C54

C55C55

GND_POWER

V5A

PANEL_ON/OFF4

DCDC_ON/OFF4

VCM_PWM5

PANEL_ON/OFF
DCDC_ON/OFF
VCM_PWM
GVOFF

GVOFF5

GVON

GVON5

BSTHI

BSTHI5

BR0N5
BR0P5
BR1N5
BR1P5
BR2N5
BR2P5

BCKN

BCKN5

BCKP

BCKP5

BG0N5
BG0P5
BG1N5
BG1P5
BG2N5
BG2P5

BB0N5
BB0P5
BB1N5
BB1P5
BB2N5
BB2P5

GND_POWER

V33S V33S

R70R70

LED_ORG4 LED_GRN4

1

Q12Q12

3 2

R72R72

LED_O

R71R71

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

73

V33D

V33D

STV

STV5
CKV5
OE5

POL5
STB5

FCKN5
FCKP5

1

Q13Q13

3 2

R73R73

LED_G

FSTHI5

R69R69

CKV

R68R68

OE

R65R65

FR0N5
FR0P5
FR1N5
FR1P5
FR2N5
FR2P5

POL

R67R67

STB

R66R66

FCKN

FCKP

FG0N5
FG0P5
FG1N5
FG1P5
FG2N5
FG2P5

FB0N5
FB0P5
FB1N5
FB1P5
FB2N5
FB2P5

FR0N
FR0P
FR1N
FR1P
FR2N
FR2P

FG0N
FG0P
FG1N
FG1P
FG2N
FG2P

FB0N
FB0P
FB1N
FB1P
FB2N
FB2P
FSTHIFSTHI

GND_POWER

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

ViewSonic Corporation

34

35

35

36

36

CN2CN2

Model

Title

I/F

Date Rev:

11. PCB Layout Diagrams

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

74

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

75

ViewSonic Corporation Confidential - Do Not Copy VX2235wm-1

76

* 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

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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

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2. Service Manual Layout

3. The form and listing

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