ViewSonic VX2245wm-1 User manual

ViewSonic VX2245wm-1
Model No. VS11349
22” Color TFT LCD Display
(VX2245wm-1_SM Rev. 1a Oct. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - [phone]
Service Manual

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Copyright
Copyright © 2006 by ViewSonic Corporation. All rights reserved. No part of this publication
may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language or computer language, in any form or by any means, electronic, mechanical, magnetic,
optical, chemical, manual or otherwise, without the prior written permission of ViewSonic
Corporation.
Disclaimer
ViewSonic makes no representations or warranties, either expressed or implied, with respect to
the contents hereof and specifically disclaims any warranty of merchantability or fitness for any
particular purpose. Further, ViewSonic reserves the right to revise this publication and to make
changes from time to time in the contents hereof without obligation of ViewSonic to notify any
person of such revision or changes.
Trademarks
Optiquest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Revision History
Revision SM Editing Date ECR Number Description of Changes Editor
1a 10/16/2006 Initial Release Jamie Chang

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TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 4
3. Front Panel Function Control Description 14
4. Circuit Description 24
5. Adjustment Procedure 31
6. Troubleshooting Flow Chart 63
7. Recommended Spare Parts List 71
8. Exploded Diagram and Exploded Parts List 73
9. Block Diagram 76
10. Schematic Diagrams 77
11. PCB Layout Diagrams 83

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1. Precautions and Safety Notices
1. Precautions and Safety Notices
1. Appropriate Operation
(1) Turn off the product before cleaning.
(2) Use only a dry soft cloth when cleaning the LCD panel surface.
(3) Use a soft cloth soaked with mild detergent to clean the display housing.
(4) Use only a high quality, safety approved AC/DC power cord.
(5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time.
(6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off.
(7) Do not touch the LCD panel surface with sharp or hard objects.
(8) Do not place heavy objects on the LCD display, video cable, or power cord.
(9) Do not use abrasive cleaners, waxes or solvents for your cleaning.
(10) Do not operate the product under the following conditions:
-Extremely hot, cold or humid environment.
-Areas containing excessive dust and dirt.
-Near any appliance generating a strong magnetic field.
-In direct sunlight.
2. Caution
No modification of any circuit should be attempted. Service work should only be performed after you are thoroughly
familiar with all of the following safety checks and servicing guidelines.
3. Safety Check
Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit, the voltage is
exposed in such areas as the associated transformer circuits.
4. LCD Module Handling Precautions
4.1 Handling Precautions
(1) Since front polarizer is easily damaged, pay attention not to scratch it.
(2) Be sure to turn off power supply when connecting or disconnecting input connector.
(3) Wipe off water drops immediately. Long contact with water may cause discoloration or spots.

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(4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.
(5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.
(6) Since CMOS LSI is used in this module, take care of static electricity and ensure human earth when handling.
(7) Do not open or modify the Module Assembly.
(8) Do not press the reflector sheet at the back of the module in any direction.
(9) In the event that a Module must be put back into the packing container slot after it was taken out of the container, do
not press the center of the CCFL Reflector edge. Instead, press at the far ends of the CFL Reflector edge softly.
Otherwise the TFT Module may be damaged.
(10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate or tilt the Interface Connector of
the TFT Module.
(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or bend
the TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no
bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be
damaged.
(12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local ordinances or
regulations for disposal.
(13) The LCD module contains a small amount of materials having no flammability grade. The LCD module should be
supplied with power that complies with the requirements of Limited Power Source (IEC60950 or UL1950), or an
exemption should be applied for.
(14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950 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
INTRODUCTION
FEATURES VX2245wm
Size 22 " wide
Luminance (Typ) 280 cd/㎡
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 °
TFTLCD PANEL
1st
CMO
A220Z1
Recommend resolution 1680x1050@60Hz
Analog (Head) Yes (75ohms, 0.7/1.0 Vp-p)
Video Digital (Head) Yes
3.5 mm Audio in (Head) Yes
Input Signal
Audio 3.5mm 2 in 1 Audio in
(Base)
Yes
3.5 Audio out (Base) Yes
Output Signal Audio Headphone out (Base) Yes
Separate Sync Yes
Composite Sync Yes
Sync Compatibility
Sync on Green Yes
PC Yes
Power Mac Yes
Compatibility
TV Box (NextVision 6) Yes
Power Voltage AC 100-240V, 50/60Hz Yes
On Mode(Typ) < 38 W
LCD Off Mode (Max) ≦1 W
On Mode(Typ) < 24 W
Power Consumption
Multimedia base On Mode (Max) ≦30 W
Upstream port (B type) X 1 Yes
USB Downstream port (A type) X 4 Yes
Card reader 8 in 1 Function SD/MMC/MS/MS PRO/CF I & II
/MicroDrive/SM
Speaker 2.1 CH - THD 10% (Max)
(Sat.: 2.5w x2 ; subwoofer:3w x1)
Yes
Tilt ( 20 ° - -5 °) Yes
Swivel No
Pivot No
Ergonomics
Height Adjust No
OSD Control [ 1 ] [ 2 ] [ ][▼] [▲] Yes
Physical (W x H x D) 524 x 493 x 212 mm
Dimension Package (W x H x D) 580 x 610 x 260 mm
Physical (Net Weight) 6.2Kg / 13.7lbs
Weight Package (Gross Weight) 8.5Kg / 18.7 lbs
Temperature (℉/℃) 41℉-95℉/+5℃-+35℃
Operating Condition Humidity (%) 20 % - 80 %
Temperature (℉/℃) -4℉-131℉/-20℃-55℃
Storage Condition Humidity (%) 20 % - 85 %
Regulation
Global: CB, MPR II,WEEE,ROHS , ISO13406-2 , Energy Star
VSA:UL, cUL, FCC-B, TUV-S, NOM,
VSE:TUV/ERGO(covers ISO13406-2&MPR II),CE GOST-R+Hygienic ,SASO ,
ENERGY
VSI: BSMI, CCC, PSB, C-TICK, MIC
VSCN:CCC

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ViewDock – Multimedia base Spec.
Device prococal USB 2.0/1.1
OHCI (Open Host Controller Interface)
USB Standards
EHCI (Enhanced Host Controller Interface)
USB 2.0 Speed
USB 1.x Speed
Mac OS X with USB 2.0 Support
Microsoft Windows XP/Me/2000/98SE with USB 2.0 Support
Mac OS 8.6 or above with USB 1.x Support and USB Card Support
1.4.1
Compatible Operating
Systems
Microsoft Windows XP/Me/2000/98SE with USB 1.x Support
Upstream 1 Upstream USB Type B Receptacle
USB Hub Downstream 4 Downstream USB Type A Receptacles
USB Supplied Current Self-Powered Mode: 500mA /Port Idle Mode : 5mA /Port
Operating Mode: 100mA/Port
Secure Digital (SD)
Multi Media Card (MMC)
Compact Flash (CF) Type I
Compact Flash (CF) Type II
Micro Drive
Smart Media (SM)
Memory Stick (MS)
Memory Stick Pro (MS Pro)
Upper Slot SMC and SD/MMC
CardReader
4 slots
Lower Slot CF Type I/II and MS/MS Dual/MS Pro
Subwoofer 3.0W (typ) ; 5.0W (Max)
Nominal size Φ46mm
S/N >85dB
Audio / Speaker
THD < 10% (Vol. Max)
S/N 60dB (Built-in)
MIC Sensitivity: -38dB +- 3dB
VR Volume control
Rotation stopper strength: 1.0Kgf.cm
Total rotational angle: 220+ 5˚
Input 2-in-1 Audio-in x 1 (Audio-in / MIC-in)
Audio I/O Output Audio-out x1 , Headphone out x1
iPOD connector Compatible with iPOD video/iPOD photo/iPOD nano/iPOD Mini/iPOD
U2/iPOD
Power adapter External
Input Voltage Range: 100~240V
Input Frequency: 50/60Hz
Output Voltage: 12V
Full load: 2.0A
Peak load: 2.5A
Size 303mm (W) x 212mm (D)
Connectivity Up to 127 Devices by Cascading Multiple Hubs
Power on Yellow-Green
iPod connecting Amber
Diagnostic LEDs iPod
connecting+Po
wer on
Yellow-green+Amber
Power consumption Typical 24W
Max.
30W
Storage Temperature -4ºF to 140ºF (-20ºC to 60ºC)
Storage Humidity 10% to 90% (Non-Condensing)
Operating Temperature 32ºF to 104ºF (0ºC to 40ºC)
Opreating Humidity 20% to 90% (Non-Condensing)
Certifications
Global: CB, WEEE,ROHS
VSA:UL, cUL, FCC-B, TUV-S, NOM
VSE:CE ,GOST-R+Hygienic ,SASO
VSI:BSMI, CCC, PSB, C-TICK, MIC
VSCN:CCC
Accessories USB A-B Cable ; 2-in-1 Cable ; Power adaptor ; iPod adapter set

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(default x 1; 4 in set)
Package content Viewdock/Quick start guide/CD(for card reader windows 98
driver)/2-in-1 Aduio cable/USB cable/Power adapter/iPod adapter set
Product definition and specification
VSA VSAP VSE VSCN
Region
(M) (A)/(P)/(J)/(S)/(K) (E)/(U) (G)
Product Name VX2245wm
Model Number VS11349
OSD Languages English, French, German, Italian, Spanish, , Finnish, Japanese,
Traditional Chinese, Simplified Chinese
TFT LCD Panel and Model # CMO A220Z1
Scalar Realtek, Model # :RTD2553V
Input Signal Dual input (1A + 1D)
Sync Compatibility Separate / Composite / SOG
Speaker (2.1ch) Sat. :2.5W (on LCD Head)
Subwoofer : 3W (on Base stand)
Power Consumption LCD: Built-in/ 38 W (typ) ; Base: 24W (typ)
Power Cable Refer to Appendix G
Power Adaptor for Multimedia base Refer to Appendix H
Analog Cable (1.8 m, color : black), with PC
2001 and Hot Plug Detect &DDC YES
DVI Cable(1.8m, color: black) with PC 2001 YES
Audio cable (1.8m) Lime green YES
USB Cable (A-B type) YES
2- in-1 Audio cable YES
iPod adapter set YES
ViewSonic CD Wizard
ViewSonic Quick Start Guide
Arabic, English, Finnish, Spanish, German,
Italian, Japanese, Swedish, Polish, Korean
Portuguese, Russian, French, Simplified
Chinese, Traditional Chinese, Czech, Hungarian
ViewSonic Card-reader driver CD YES
Screen Protector Mylar YES
Portrait CD(Version xxx) NO NO NO NO
Extrme Label (5ms) YES YES YES YES
Pop Sticker (Front bezel / Base) YES YES YES YES
QSG insert YES YES YES YES
Service Insert YES NO NO NO
Warranty Sticker NO NO NO YES
Warranty Card NO NO NO YES
Carton Sticker NO NO NO YES
PE bag of Carton NO NO NO YES

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4-1 GENERAL specification
Test Resolution & Frequency 1680x1050 @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls
Factory Default:
Contrast = 70%, Brightness = 100%
4-2 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 1/2B
Video Signals
1. Video RGB (Analog)
Separate, Composite, and Sync on Green
2. TMDS (Digital)
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
Sync Signals TTL
DDC 1/2B Compliant with Revision 1.3
Sync Compatibility Separate Sync, Composite Sync, SOG
Video Compatibility Shall be compatible with all PC type computers, Macintosh
computers, and after market video cards
Resolution Compatibility
640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x
624, 1024 x 768, 1152 x 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.
Exclusions Not compatible with interlaced video
POWER SUPPLY (LCD Head)
Internal Power Supply 27-D009542
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 5.0 A typical at 12.0 VDC
Leakage Current 3.5mA (Max) at 254VAC / 60Hz
Efficiency (at 115VAC Full Load) Typical: 80%
Minimum: 75%
Fuse Internal and not user replaceable
Power Output 50 Watts (typ)
Ripple and Noise Ripple: <3%
Noise: <1%
Max Input AC Current 1.5 Arms @ 90VAC, 0.75 Arms @180VAC
Inrush Current (Cold Start) 50 A (max) @ 115VAC
90 A (max) @ 230VAC
Power Supply Cold Start
Shall start and function properly when under full load, with all
combinations of input voltage, input frequency, and operating
temperature.
Power Supply Transient Immunity Shall be able to withstand an ANSI/IEEE C62.41-1980 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.
Power Supply Missing Cycle Immunity
Shall be able to function properly, without reset or visible screen
artifacts, when ½ cycle of AC power is randomly missing at
nominal input.
Power Supply Acoustics The power supply shall not produce audible noise that would be
detectable by the user. Audible shall defined to be in

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compliance with ISO 7779 (DIN EN27779:1991) Noise
measurements of machines acoustics. Power Switch noise shall
not be considered.
Power Saving Operation(Method) VESA DPMS Signaling
Mode LED Power Consumption
On Blue 38W (typ)
43W (max)
Active off Amber <1W
Power Consumption
Off Off <1W
Recovery Time On Mode = N/A, Active Off < 3 sec
4-4 ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency 24 – 82 kHz
Vertical Refresh Rate 50 – 85* Hz
Maximum Pixel Clock 150 MHz
Sync Polarity Independent of sync polarity.
Timing Table
Analog
Item
Timing
Separated
Composite
SOG
Digital - TMDS
Remark
1 640 x 350 @ 70 Hz, 31.5 KHz 3 3 3 3
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).
2 640 x 350 @ 85 Hz, 37.9 KHz 3 3 3 3
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).
3 640 x 400 @ 60 Hz, 31.5 KHz 3 3 3 3
For Analog sync, switch 640x400@60Hz and
640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)
4 640 x 400 @ 70 Hz, 31.5 KHz 3 3 3 3
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).
5 640 x 400 @ 85 Hz, 37.9 KHz 3 3 3 3
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).
6 640 x 480 @ 50 Hz, 24.7 KHz 3 3 3 3
7 640 x 480 @ 60 Hz, 31.5 KHz 3 3 3 3
For Analog sync, switch 640x400@60Hz and
640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)
8 640 x 480 @ 67 Hz, 35 KHz 3 3 3 3
9 640 x 480 @ 72 Hz, 37.9 KHz 3 3 3 3
10 640 x 480 @ 75 Hz, 37.5 KHz 3 3 3 3
11 640 x 480 @ 85 Hz, 43.3 KHz 3 3 3 3
12 720 x 400 @ 70 Hz, 31.5 KHz 3 3 3 3
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).
13 720 x 400 @ 85 Hz, 37.9 KHz 3 3 3 3
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).
14 720 x 480 @ 60 Hz, 31.5 KHz 3 3 3 3 For Analog sync, the image vertical size image will

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be not full screen (Still at the center),and the
information OSD shows 640x480
15 720 x 576 @ 50 Hz, 31.3 KHz 3 3 3 3
For Analog sync, the image vertical size image will
be not full screen (Still at the center),and the
information OSD shows 800x600
16 800 x 600 @ 56 Hz, 35.1 KHz 3 3 3 3
17 800 x 600 @ 60 Hz, 37.9 KHz 3 3 3 3
18 800 x 600 @ 72 Hz, 48.1 KHz 3 3 3 3
19 800 x 600 @ 75 Hz, 46.9 KHz 3 3 3 3
20 800 x 600 @ 85 Hz, 53.7 KHz 3 3 3 3
21 832 x 624 @ 75 Hz, 49.7 KHz 3 3 3 3
22 1024 x 768 @ 50 Hz, 39.6 KHz 3 3 3 3
For Analog sync, Switch 1024x768@50Hz and
1280x768@50Hz by [1]+[2] short cut key (primary
= 1024x768@50Hz)
23 1024 x 768 @ 60 Hz, 48.4 KHz 3 3 3 3
24 1024 x 768 @ 70 Hz, 56.5 KHz 3 3 3 3
25 1024 x 768 @ 75 Hz, 60 KHz 3 3 3 3
26 1024 x 768 @ 75 Hz, 60.2 KHz 3 3 3 3
27 1024 x 768 @ 85 Hz, 68.7 KHz 3 3 3 3
28 1152 x 864 @ 75 Hz, 67.5 KHz 3 3 3 3
29 1152 x 870 @ 75 Hz, 68.7 KHz 3 3 3 3
30 1280 x 768 @ 50 Hz, 39.6 KHz 3 3 3 3
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 3 3 3 3
32 1280 x 768 @ 60 Hz, 47.8 KHz 3 3 3 3
33 1280 x 768 @ 75 Hz, 60.3 KHz 3 3 3 3
For Analog sync, Switch 1024x768@75Hz and
1280x768@75Hz by [1]+[2] short cut key (primary
= 1024x768@75Hz)
34 1280 x 768 @ 85 Hz, 68.6 KHz 3 3 3 3
For Analog sync, Switch 1024x768@85Hz and
1280x768@85Hz by [1]+[2] short cut key (primary
= 1024x768@85Hz)
35 1280 x 960 @ 50 Hz, 49.4 KHz 3 3 3 3
36 1280 x 960 @ 60 Hz, 59.7 KHz 3 3 3 3
37 1280 x 960 @ 75 Hz, 75.2 KHz 3 3 3 3
38 1280 x 1024 @ 50 Hz, 52.7 KHz 3 3 3 3
39 1280 x 1024 @ 60 Hz, 64 KHz 3 3 3 3
40 1280 x 1024 @ 70 Hz, 74.6 KHz 3 3 3 3
41 1280 x 1024 @ 72 Hz, 76.8 KHz 3 3 3 3
42 1280 x 1024 @ 75 Hz, 80 KHz 3 3 3 3
43 1360 x 768 @ 60 Hz, 47.7 KHz 3 3 3 3
44 1400 x 1050 @ 50 Hz, 54.1 KHz 3 3 3 3
45 1400 x 1050 @ 60 Hz, 64.7 KHz 3 3 3 3
46 1400 x 1050 @ 60 Hz, 65.3 KHz 3 3 3 3
For analog sync,, Switch 1400x1050@60Hz and
1680x1050@60Hz by [1]+[2] short cut key
(primary = 1680x1050@60Hz)
47 1400 x 1050 @ 75 Hz, 82.3 KHz 3 3 3 3
48 1440 x 900 @ 60 Hz, 55.5 KHz 3 3 3 3
49 1440 x 900 @ 60 Hz, 59.9 KHz 3 3 3 3
50 1440 x 900 @ 75 Hz, 75 KHz 3 3 3 3
51 1600 x 1200 @ 60 Hz, 75 KHz 3 3 3 3
52 1680 x 1050 @ 60 Hz, 65.3 KHz 3 3 3 3
For analog sync,, Switch 1400x1050@60Hz and
1680x1050@60Hz by [1]+[2] short cut key
(primary = 1680x1050@60Hz)
*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.
Primary Presets
1680x1050 @ 60Hz
User Presets
Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration

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Changing Modes
Maximum Mode Change Blank Time for image stability : 5 seconds (Max), excluding “Auto Adjust” time
Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting when execute
“Auto Adjust”
The monitor needs to do “Auto Adjust” the first time a new mode is detected
(see section “0-Touch™ Function Actions”)
While running Change Mode, Auto Adjust or Memory Recall, the image shall blank
4-5 FRONT PANEL CONTROLS 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 ] [ ] [▼] [▲]
[ 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)
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)
[▼] 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)
White Balance. (Not shown on user’s guide)
[1] + [▼] Power Lock
[1] + [▲] OSD Lock
[▲] Essential mode switch
Standard ->Text -> Cinema -> Game -> Portrait -> Scenery -> Vivid
[2] + [▲] Skin tone switch
Nature -> Reddish -> yellowish
[▼] +[▲] + [ ] Factory Mode
Remark : All the short cuts function are only available while OSD off
Main Menu Controls
Auto Image Adjust*1
Contrast/Brightness*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*1, H/V. Position*1, Fine Tune*1, Sharpness*3 , Opticolor [Standard, Text , Cinema, Game,
Portrait, Scenery, Vivid ],Opticolor Skin Tone[Nature, reddish ,yellowish]
Setup Menu

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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
4-6 AUDIO INTERFACE (LCD SIDE-SPEAKER SPECIFICATION)
Line input signal 1.0 Vrms @1kHz
Line input impedance 10 kOhm
Maximum Amp power output (Watt) 2 W (RL=4Ω)
Amp -THD < 10 % THD @1kHz
Speaker Power rating(Ω/Watt) 4Ω/2.5 W (TYP.) ; 4Ω/ 3 W (MAX)
Signal to Noise Ratio 72 dB
Frequency response Fo – 20kHz
SPL. 85 ± 3 dB (at 0.5m)
FO 300 Hz
Line input connection 3.5 mm stereo jacks
Vibration There should be no audible vibration resonance at
volume=100% & treble / bass in def. Value
Screen image There should be no affect on the screen image stability under
any conditions
Connector PC99 requirement Audio in Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length
Audio DPMS SPEAKERS STAY OFF WHEN THE REST OF THE MONITOR
IS IN POWER SAVING
* No any sympathetic or abnormal noise allowed.

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4-7 TFT LCD PANEL
1st Source Panel
Model number CMO A220Z1
Type TN type with RSDS interface
Active Size 22” wide ; 473.76 (H) x 296.1 (V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.282(H) x 0.282(H) mm
Glass Treatment Anti Glare (Hard coating 3H)
# of Backlights 4 CCFL ; Top & Bottom edge side
Backlight Life 40,000 Hours (Min)
Luminance (5-point) –
Condition:
CT = 6500K, Contrast = Max, Brightness =
Max
280 cd/m2 (Typ after 30 minute warm up)
200 cd/m2 (Min after 30 minute warm up)
Brightness Uniformity 77 % (Typ) / 67 % (Min)
Contrast Ratio 700:1 (typ), 450:1 (min)
Color Depth 16.2 million colors (6 bits + 2 bits FRC)
Viewing Angle (Horizontal) @ CR>10
Typical: 170º
Minimum: 150º
Viewing Angle (Vertical) @ CR>10
Typical: 160º
Minimum: 140º
Response Time
10%-90% @ Ta=25°C
Typical = 5ms (Tr =2 ms,Tf =3 ms)
Maxmum = 15ms (Tr =7 ms,Tf =8 ms)
Mercury 3.0 mg per lamp
Panel Defects Please see Panel Quality Specifications.
*The average of measured value from monthly shipment shall be equal or better than the Typical value above.
4-8 IMAGE PERFORMANCE
Factory Defaults
Item Defaults Item Defaults
Contrast 70% OSD Time Out 15 Sec
Brightness 100% OSD Background On
Color Temperature 6500K Volume 90%
Sharpness 100% Treble N/A
OSD H. Position 50% Bass N/A
OSD V. Position 50% Input Priority Auto Search
720x400/640x400 720x400 Resolution Notice Enabled
Display Size
Horizontal Display Size, Primary Preset Full Screen
Vertical Display Size, Primary Preset Full Screen
Luminance
Lv (Max) –
Condition:
Contrast = 100%
Brightness = 100%
CCT = User color(R/G/B=100%)
Lv (Max) = The Luminance in section
4-7 “TFT LCD PANEL”
Lv (sRGB) –
Condition:
Contrast = Default
Brightness = Default
CCT = sRGB
110 nits ≦Lv (sRGB) ≦140 nits
Lv (6500k) – Lv (6500K) / Lv (Max) x 100% > 85%

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Condition:
Contrast = Default
Brightness = Default
CCT = 6500K
Lv (9300k) –
Condition:
Contrast = Default
Brightness = Default
Color Temperature = 9300K
Lv (9300k) / Lv (Def) x 100% > 70%
Lv (7500k) –
Condition:
Contrast = Default
Brightness = Default
Color Temperature = 7500K
Lv (7500k) / Lv (Def) x 100% > 75%
Lv (5400k) –
Condition:
Contrast = Default
Brightness = Default
Color Temperature = 5400K
Lv (5400k) / Lv (Def) x 100% > 75%
Lv (Brightness) –Condition:
Contrast = 100%
Lv(Brightness=0%) / Lv(Brightness=100%) x
100% 55%
Lv (Contrast) –Condition:
Brightness = 100%
Lv(Contrast =0%) / Lv(Contrast =100%) x 100%
30%
Contrast Ratio
CR(Max) –Condition:
Contrast / Brightness = 100%
CCT = USER COLOR (R/G/B=100%)
Same as the Contrast Ratio in section 4-6 “TFT LCD
PANEL”
CR(6500K) –Condition:
Contrast / Brightness = Default
CCT = 6500K
CR(6500K) / CR(Max) ≧85%
* ≧50% units of shipment shall be equal or better than typical CR spec.
Saturation
Contrast = Default
Brightness = Default
Test Pattern = 64-Gray
No visible saturation
Contrast =100%
Brightness = 100%
Test Pattern = 32-Gray
>1 and <3 – level saturation
Preset Color Temperatures
sRGB It should meet IEC 61966-2-1 (1999-10) standard.
CCT (typ) = 9300K
Preset 1 x=0.283±0.03
y=0.298±0.03
CCT (typ) = 7500K
Preset 2 x=0.299±0.03
y=0.315±0.03
CCT (typ) = 6500K
Preset 3 (Primary) x=0.313±0.03
y=0.329±0.03
CCT (typ) = 5400K
Preset 4 x=0.336±0.03
y=0.348±0.03
Preset Color Temperature
Adjustability
Each color preset shall be adjustable. Red, Green, and Blue shall
be individually controlled.
* Any gray level and Contrast/Brightness should not get reddish, greenish or bluish.

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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
Scrolls through menu
options and adjusts the
displayed control.
Also a shortcut to display
the Contrast adjustment
control screen (T) /
OptiColor (S)
Displays the control screen for
the highlighted control.
Also toggles between two
controls on some screens.
Also a shortcut to Auto Image
Adjust.
Standby Power On/Off
Power light
Blue = ON
Orange = Power Saving
Displays the Main
Menu or exits the
control screen and
saves adjustments.
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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.
4. To adjust the setting, press the up Sor down Tbuttons.
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.)
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.
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Main Menu Controls
Adjust the menu items shown below by using the up Sand down Tbuttons.
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 VX2245wm.
Audio Adjust
Volume 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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