ViewSonic VX2245wm-1 User Manual

Service 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]

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

4.1Handling 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	Surface of the panel is pressed by fingers & this may
cover of the monitor.	cause “ MURA “
Do not touch the surface of the polarizer .

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
	TFTLCD PANEL	Luminance (Typ)						280 cd/
	1st	Contrast Ratio (Typ)						700:1
	CMO	Colors						16.2 M (6 bits + 2 bits FRC)
		Response Time						5 ms(on/off)
	A220Z1	Viewing Angle (H/V)						170 ° / 160 °
		Recommend resolution						1680x1050@60Hz
		Video		Analog			(Head)	Yes (75ohms, 0.7/1.0 Vp-p)
	Input Signal			Digital			(Head)	Yes
		Audio		3.5 mm Audio in (Head)				Yes
				3.5mm 2 in 1 Audio in				Yes
				(Base)
	Output Signal	Audio		3.5 Audio out (Base)				Yes
				Headphone out (Base)				Yes
	Sync Compatibility	Separate Sync						Yes
		Composite Sync						Yes
		Sync on Green						Yes
	Compatibility	PC						Yes
		Power Mac						Yes
		TV Box (NextVision 6)						Yes
	Power Voltage	AC 100-240V, 50/60Hz						Yes
		LCD				On Mode(Typ)		< 38 W
	Power Consumption					Off Mode (Max)		1 W
		Multimedia base				On Mode(Typ)		< 24 W
						On Mode (Max)		30 W
	USB	Upstream port (B type) X 1						Yes
		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)						Yes
		(Sat.: 2.5w x2 ; subwoofer:3w x1)
		Tilt ( 20 ° - -5 °)						Yes
	Ergonomics	Swivel						No
		Pivot						No
		Height Adjust						No
	OSD Control	[ 1 ] [ 2 ] [ ][▼] [▲]						Yes
	Dimension	Physical (W x H x D)						524 x 493 x 212 mm
		Package (W x H x D)						580 x 610 x 260 mm
	Weight	Physical (Net Weight)						6.2Kg / 13.7lbs
		Package (Gross Weight)						8.5Kg / 18.7 lbs
	Operating Condition	Temperature ( / )						41 -95 /+5 -+35
		Humidity (%)						20 % - 80 %
	Storage Condition	Temperature ( / )						-4 -131 /-20 -55
		Humidity (%)						20 % - 85 %
		Global: CB, MPR II,WEEE,ROHS , ISO13406-2 , Energy Star
		VSA:UL, cUL, FCC-B, TUV-S, NOM,
	Regulation	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.

	USB Standards	Device prococal	USB 2.0/1.1
			OHCI (Open Host Controller Interface)
			EHCI (Enhanced Host Controller Interface)
			USB 2.0 Speed
			USB 1.x Speed
	Compatible Operating		Mac OS X with USB 2.0 Support
			Microsoft Windows XP/Me/2000/98SE with USB 2.0 Support
	Systems
			Mac OS 8.6 or above with USB 1.x Support and USB Card Support
			1.4.1
			Microsoft Windows XP/Me/2000/98SE with USB 1.x Support
	USB Hub	Upstream	1 Upstream USB Type B Receptacle
		Downstream	4 Downstream USB Type A Receptacles
			Self-Powered Mode: 500mA /Port
	USB Supplied Current		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
	Card Reader		Micro Drive
			Smart Media (SM)
	4 slots
			Memory Stick (MS)
			Memory Stick Pro (MS Pro)
		Upper Slot	SMC and SD/MMC
		Lower Slot	CF Type I/II and MS/MS Dual/MS Pro
		Subwoofer	3.0W (typ) ; 5.0W (Max)
	Audio / Speaker	Nominal size	Φ46mm
		S/N	>85dB
		THD	< 10% (Vol. Max)
	MIC	S/N	60dB (Built-in)
		Sensitivity:	-38dB +- 3dB
	VR	Volume control	Rotation stopper strength: 1.0Kgf.cm
			Total rotational angle: 220+ 5˚
	Audio I/O	Input	2-in-1 Audio-in x 1 (Audio-in / MIC-in)
		Output	Audio-out x1 , Headphone out x1
	iPOD connector		Compatible with iPOD video/iPOD photo/iPOD nano/iPOD Mini/iPOD
			U2/iPOD
			Input Voltage Range: 100~240V
	Power adapter	External	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
	Diagnostic LEDs	iPod connecting	Amber
		iPod	Yellow-green+Amber
		connecting+Po
		wer on	24W
	Power consumption	Typical
		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)
			Global: CB, WEEE,ROHS
			VSA:UL, cUL, FCC-B, TUV-S, NOM
	Certifications		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

	Region	VSA	VSAP	VSE	VSCN
		(M)	(A)/(P)/(J)/(S)/(K)	(E)/(U)	(G)

Product Name

Model Number

OSD Languages

TFT LCD Panel and Model #

Scalar

Input Signal

Sync Compatibility

Speaker (2.1ch)

Power Consumption

Power Cable

Power Adaptor for Multimedia base

Analog Cable (1.8 m, color : black), with PC 2001 and Hot Plug Detect &DDC

DVI Cable(1.8m, color: black) with PC 2001

Audio cable (1.8m) Lime green

USB Cable (A-B type)

2- in-1 Audio cable

iPod adapter set

ViewSonic CD Wizard

ViewSonic Quick Start Guide

ViewSonic Card-reader driver CD

Screen Protector Mylar

Portrait CD(Version xxx)

Extrme Label (5ms)

Pop Sticker (Front bezel / Base)

QSG insert

Service Insert

Warranty Sticker

Warranty Card

Carton Sticker

PE bag of Carton

VX2245wm

VS11349

English, French, German, Italian, Spanish, , Finnish, Japanese,

Traditional Chinese, Simplified Chinese

CMO A220Z1

Realtek, Model # :RTD2553V

Dual input (1A + 1D)

Separate / Composite / SOG

Sat. :2.5W (on LCD Head)

Subwoofer : 3W (on Base stand)

LCD: Built-in/ 38 W (typ) ; Base: 24W (typ)

Refer to Appendix G

Refer to Appendix H

YES

YES

YES

YES

YES

YES

Arabic, English, Finnish, Spanish, German,

Italian, Japanese, Swedish, Polish, Korean

Portuguese, Russian, French, Simplified

Chinese, Traditional Chinese, Czech, Hungarian

YES

YES

NO	NO	NO	NO
YES	YES	YES	YES
YES	YES	YES	YES
YES	YES	YES	YES
YES	NO	NO	NO
NO	NO	NO	YES
NO	NO	NO	YES
NO	NO	NO	YES
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
		1. Video RGB (Analog)
	Video Signals	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
		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
	Resolution Compatibility	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
		Shall start and function properly when under full load, with all
	Power Supply Cold Start	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		LED
	Mode			Power Consumption
Power Consumption	On		Blue	38W (typ)
				43W (max)
	Active off		Amber	<1W
	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				TMDSDigital
Item		Timing					Separated	Composite		SOG				Remark
												For Analog sync, the image vertical size image will
1	640 x 350	@	70	Hz,	31.5	KHz	3	3		3	3	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
2	640 x 350	@	85	Hz,	37.9	KHz	3	3		3	3	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						For Analog sync, switch 640x400@60Hz and
							3	3		3	3	640x480@60Hz by [1]+[2] short cut key (primary
												= 640x480@60Hz)
												For Analog sync, the image vertical size image will
4	640 x 400	@	70	Hz,	31.5	KHz	3	3		3	3	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
5	640 x 400	@	85	Hz,	37.9	KHz	3	3		3	3	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						For Analog sync, switch 640x400@60Hz and
							3	3		3	3	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
												For Analog sync, the image vertical size image will
12	720 x 400	@	70	Hz,	31.5	KHz	3	3		3	3	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
13	720 x 400	@	85	Hz,	37.9	KHz	3	3		3	3	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
											For Analog sync, the image vertical size image will
15	720 x 576	@	50	Hz,	31.3	KHz	3	3	3	3	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					For Analog sync, Switch 1024x768@50Hz and
							3	3	3	3	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					For Analog sync, Switch 1024x768@50Hz and
							3	3	3	3	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					For Analog sync, Switch 1024x768@75Hz and
							3	3	3	3	1280x768@75Hz by [1]+[2] short cut key (primary
											= 1024x768@75Hz)
											For Analog sync, Switch 1024x768@85Hz and
34	1280 x 768	@	85	Hz,	68.6	KHz	3	3	3	3	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
											For analog sync,, Switch 1400x1050@60Hz and
46	1400 x 1050	@	60	Hz,	65.3	KHz	3	3	3	3	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					For analog sync,, Switch 1400x1050@60Hz and
							3	3	3	3	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 ] Button 1
[ 1 ] [ 2 ] [ ] [▼] [▲]	[ 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] + [▼] + [▲]	White Balance. (Not shown on user’s guide)
(Keep pushing 3 sec)	Power Lock
[1] + [▼]
[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) –	280 cd/m2 (Typ after 30 minute warm up)
Condition:	200 cd/m2 (Min after 30 minute warm up)
CT = 6500K, Contrast = Max, Brightness =
Max
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	Typical = 5ms (Tr =2 ms,Tf =3 ms)
10%-90% @ Ta=25°C	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
Contrast	70%
Brightness	100%
Color Temperature	6500K
Sharpness	100%
OSD H. Position	50%
OSD V. Position	50%
720x400/640x400	720x400

Item	Defaults
OSD Time Out	15 Sec
OSD Background	On
Volume	90%
Treble	N/A
Bass	N/A
Input Priority	Auto Search
Resolution Notice	Enabled

Display Size

Horizontal Display Size, Primary Preset	Full Screen
Vertical Display Size, Primary Preset	Full Screen

Luminance

Lv (Max) –
Condition:	Lv (Max) = The Luminance in section
Contrast = 100%
	4-7 “TFT LCD PANEL”
Brightness = 100%
CCT = User color(R/G/B=100%)
Lv (sRGB) –
Condition:	110 nits Lv (sRGB) 140 nits
Contrast = Default
Brightness = Default
CCT = sRGB
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	Lv (9300k) / Lv (Def) x 100% > 70%
	Brightness = Default
	Color Temperature = 9300K
	Lv (7500k) –
	Condition:
	Contrast = Default	Lv (7500k) / Lv (Def) x 100% > 75%
	Brightness = Default
	Color Temperature = 7500K
	Lv (5400k) –
	Condition:	Lv (5400k) / Lv (Def) x 100% > 75%
	Contrast = Default
	Brightness = Default
	Color Temperature = 5400K
	Lv (Brightness) –Condition:	Lv(Brightness=0%) / Lv(Brightness=100%) x
	Contrast = 100%	100% 55%
	Lv (Contrast) –Condition:	Lv(Contrast =0%) / Lv(Contrast =100%) x 100%
	Brightness = 100%	30%

	Contrast Ratio
	CR(Max) –Condition:	Same as the Contrast Ratio in section 4-6 “TFT LCD
	Contrast / Brightness = 100%
		PANEL”
	CCT = USER COLOR (R/G/B=100%)
	CR(6500K) –Condition:	CR(6500K) / CR(Max) 85%
	Contrast / Brightness = Default
	CCT = 6500K

* 50% units of shipment shall be equal or better than typical CR spec.

Saturation

	Contrast = Default			No visible saturation
	Brightness = Default
	Test Pattern = 64-Gray
	Contrast =100%			>1 and <3 – level saturation
	Brightness = 100%
	Test Pattern = 32-Gray
	Preset Color Temperatures
	sRGB		It should meet IEC 61966-2-1 (1999-10) standard.
	Preset 1		CCT (typ) = 9300K
			x=0.283±0.03
			y=0.298±0.03
	Preset 2		CCT (typ) = 7500K
			x=0.299±0.03
			y=0.315±0.03
	Preset 3 (Primary)		CCT (typ) = 6500K
			x=0.313±0.03
			y=0.329±0.03
	Preset 4		CCT (typ) = 5400K
			x=0.336±0.03
			y=0.348±0.03
	Preset Color Temperature		Each color preset shall be adjustable. Red, Green, and Blue shall
	Adjustability		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.

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.

Main Menu

with OSD controls

Front Control Panel shown below in detail

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 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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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.

Text 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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Physical Description

Please refer to the following illustrations to identify the components of the ViewDock.

Front View

Rear view

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Card Reader Installation

Refer to the following information

After connecting the ViewDock to your PC, Windows File Manager will show 4 extra icons.

Step1. Please check your card socket

Step2. Insert your memory card. Each slot of the card reader will be recognized as a

Removable Disk and the icon will be shown in "My Computer" of Windows

You do not need to install any special drivers for the Card Reader if your OS is Windows 2000/ ME/XP.

Card reader Installation guide for Windows 98SE :

(Please do not connect the ViewDock to your PC's USB port before running the CD):

1.Insert the driver CD into the CD-ROM

2.Please launch the .exe file and the driver will be installed automatically.

3.After completing installation, connect the ViewDock to your PC's USB port. The card reader is now operational.

4.Each slot of the card reader will be recognized as a Removable Disk and the icon will be shown in "My Computer."

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USB Hub Installation

Refer to the following information

Downstream port

Connect to device

Type A female

Connect any USB devices via the USB ports on the ViewDock.

Windows will auto detect and install the generic Windows USB driver for USB 1.1/2.0 device operation. You do not need to install any special drivers for the USB Hub if your OS is Windows 2000/ ME/XP.

USB hub installation guide for Windows 98SE :

Insert the included CD into the CD-ROM drive. The Autorun feature will automatically begin the installation process. Follow

the instructions on the screen to install the driver. If the setup program does not start automatically, go to "My Computer" and

double-click on the CD-ROM drive, and select "Setup.exe" from the CD. Note: If USB device is not detected , does not work properly:

1.Double click the "System" icon in Control Panel.

2.Select the "Device Manager" tab from System Properties dialog window.

3.Select "Other devices" to see the contents.

4.Select "Unknown device" and click "Remove" button.

5.Click the "Refresh" button and system will find a new device.

ViewDockTM Connecting with iPod

Refer to the following information

1.Make sure the ViewDock power is ON.

2.Dock your iPod into the universal iPod docking station with the appropriate adapter insert.

3.The iPod LED indicator will turn on amber

4.Wait for a few seconds for the iTunes software to launch.

5.Play your favorite song with iTunes software (for all iPod models) or play music from iPod directly (excluding iPod shuffle.)

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iPod adapter insert description:

iPod with video adaptor is a default setting for multimedia base.

Subwoofer Volume Control

Refer to the following information

1.Adjust subwoofer volume via volume control

2."" Turn right to increases the subwoofer volume.

3."" Turn left to decreases the subwoofer volume.

4.In order to obtain the optimum listening environment, please adjust the volume of stereo speakers in the monitor head via the monitor OSD menu to match and balance the subwoofer volume.

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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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Analog EDID

Time: 13:26:13

Date: Thu Jun 08, 2006

______________________________________________________________________

______________________________________________________________________

						VIEWSONIC CORPORATION
					EDID Version # 1,				Revision # 3
					DDCTest For: ViewSonic VX2245wm
______________________________________________________________________
______________________________________________________________________
EDID Block 0, Bytes 0-127
128 BYTES OF EDID CODE:
		0	1	2	3	4	5	6	7	8	9
		________________________________________
0	|	00	FF	FF	FF	FF	FF	FF	00	5A	63
10	|	1E	BB	01	01	01	01	01	10	01	03
20	|	0E	2F	1E	78	2E	F5	85	A4	58	49
30	|	9A	24	12	50	54	BF	EF	80	B3	00
40	|	A9	40	95	00	90	40	81	80	81	40
50	|	71	4F	01	01	21	39	90	30	62	1A
60	|	27	40	68	B0	36	00	DA	28	11	00
70	|	00	1C	00	00	00	FF	00	51	44	4F
80	|	30	36	30	31	30	30	30	30	31	0A
90	|	00	00	00	FD	00	32	4B	1E	52	0F
100	|	00	0A	20	20	20	20	20	20	00	00
110	|	00	FC	00	56	58	32	32	34	35	77

120 | 6D 0A 20 20 20 20 00 A9

______________________________________________________________________

(08-09)	ID Manufacturer Name ________________	= VSC
(11-10)	Product ID Code _____________________	= BB1E
(12-15)	Last 5 Digits of Serial Number ______ = Not Used
(16)	Week of Manufacture _________________	= 01
(17)	Year of Manufacture _________________	= 2006
(10-17)	Complete Serial Number ______________	= See Descriptor Block
(18)	EDID Version Number _________________	= 1
(19)	EDID Revision Number ________________	= 3

(20)VIDEO INPUT DEFINITION:

	Analog Signal
	0.700, 0.300 (1.000 Vp-p)
	Separate Syncs, Composite Sync, Sync on Green
(21)	Maximum Horizontal Image Size ________________	=	470 mm
(22)	Maximum Vertical Image Size __________________	=	300 mm
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(23)

Display Gamma ________________________________

= 2.20

(24)Power Management and Supported Feature(s):

Active Off/Very Low Power, Standard Default Color Space, Preferred Timing Mode

Display Type = R/G/B Color (25-34) CHROMA INFO:

Red X - 0.644 Green X - 0.286 Blue X - 0.143 White X - 0.313 Red Y - 0.347 Green Y - 0.603 Blue Y - 0.070 White Y - 0.329

(35)ESTABLISHED TIMING I:

720 X 400 @ 70Hz (IBM,VGA)

640 X 480 @ 60Hz (IBM,VGA)

640 X 480 @ 67Hz (Apple,Mac II)

640 X 480 @ 72Hz (VESA)

640 X 480 @ 75Hz (VESA)

800 X 600 @ 56Hz (VESA)

800 X 600 @ 60Hz (VESA)

(36)ESTABLISHED TIMING II: 800 X 600 @ 72Hz (VESA) 800 X 600 @ 75Hz (VESA)

832 X 624 @ 75Hz (Apple,Mac II)

1024 X 768 @ 60Hz (VESA)

1024 X 768 @ 70Hz (VESA)

1024 X 768 @ 75Hz (VESA)

1280 X 1024 @ 75Hz (VESA)

(37)Manufacturer's Reserved Timing: 1152 X 870 @ 75Hz (Apple,Mac II)

(38-53) Standard Timing Identification:

1680 X 1050 @60Hz

1600 X 1200 @60Hz

1440 X 900 @60Hz

1400 X 1050 @60Hz

1280 X 1024 @60Hz

1280 X 960 @60Hz

1152 X 864 @75Hz Not Used

______________________________________________________________________

(54-71) Detailed Timing / Descriptor Block 1:

1680x1050 Pixel Clock: 146.25 MHz

______________________________________________________________________

Horizontal Image Size: 474 mm	Vertical Image Size: 296 mm
Refreshed Mode: Non-Interlaced	Normal Display - No Stereo
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