ViewSonic VG921m-4 VS11369, VS11369 Service Manual
ViewSonic VG921m-4
Model No. VS11369
19” Color TFT LCD Display
(VG921m-4_SM Rev. 1a Nov. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
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 11/1/2006 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 18
4. Circuit Description 24
5. Adjustment Procedure 31
6. Troubleshooting Flow Chart 55
7. Recommended Spare Parts List 63
8. Exploded Diagram and Exploded Parts List 66
9. Block Diagram 68
10. Schematic Diagrams 69
11. PCB Layout Diagrams 75
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1. Precautions and Safety Notices
1. Please carefully read this manual before operating the device and keep it available for future reference.
2. To avoid the danger of the monitor falling and thereby possibly causing injury and/or serious damage to the monitor
itself, do not place it on unstable cars or desks. Be careful to avoid placing any stress on the LCD screen during
handling.
3. Do not place this monitor in areas that are wet or where water or other liquids may come in contact with it, such as
bathrooms, kitchens, wet floors, near washing machines or by swimming pools.
4. Remove the power plug from the electrical socket before cleaning. No water-containing cleaning agent should be
used to clean the screen, but only cleaning agents formulated specifically for cleaning LCD screens. Do not put any
liquid cleaning agent directly on the screen, but put it on a soft cloth first and then gently apply the cloth to the screen.
5. In order to guarantee reliable operation and adequate heat dissipation, do not cover or block vent holes on the monitor.
Do not put the monitor close to heat sources. Do not place the monitor on furniture such as a bookshelf, unless
sufficient ventilation is available.
6. A 3-pin grounding plug is provided for this monitor. In order to guarantee normal operation and safety of this unit,
this plug should be used with a matching grounded power socket.
7. Please follow all warnings and instructions that accompany the monitor.
8. Please pay special attention to power supply overloads, as electrical shock or fire may occur.
9. Do not place anything on the power cord. Do not hang the power cord over an area where people or objects may pass.
10. In case the monitor is not be used for an extended period, turn off power to avoid the possibility of short circuits
caused by lightning.
11. In order to avoid electrical shock or fire risks, do not insert any object through any openings in the monitor’s
enclosure. Do not allow any liquid to come in contact with the monitor.
12. In case of any abnormal noise or odor caused by incorrect operation, turn off power immediately and contact a
professional technician. Do not attempt to repair this monitor by yourself, as electrical shock may occur when
opening the back cover or accessing internal components.
13. If any of the following conditions occurs, turn off power and contact a repair service provider:
1) the power cord is damaged or worn;
2) liquid has gotten into the monitor, or the monitor has experienced immersion or wetting;
3) the monitor has fallen;
4) the monitor’s performance shows obvious changes;
5) the monitor fails to work normally when correct procedures are followed. In that case, please make any
adjustments in accordance with instructions supplied with the monitor; do not attempt any changes to
established procedures, as further damage may occur, making successful repair of the monitor more difficult.
14. In case parts need to be replaced, you must use identical parts or those supplied by our certified manufacturers. Any
other parts used without our authorization may result in electrical shock or fire risk.
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Handing and Placing methods
Correct methods Incorrect methods
Only touch the metal frame of the LCD panel or the
front cover of the monitor, DO not touch the surface of
the POL
Surface of the LCD panel is pressed by fingers and that
may cause”mura”
Take out the monitor with cushions
Taking out the monitor by grasping the LCD panel, that
May cause”mura”
Place the monitor on a clean and soft foam pad
Placing the monitor on a foreign objects, that could
scratch The surface of the "Panel" or cause "mura"
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The panel is placed facedown the lap,that may cause
"mura"
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2. Specification
Introduction
1 LCD PANEL
(1
st
source)
Panel:
Size
Pixel Arrange
Glass Treatment
Contrast Ratio
Viewing Angle
Colors
Luminance
Response Time
Backlight
Backlight Life
Mercury
CR >= 10
CR >= 5
On/Off
HSD190ME13-A16
19" Color a-Si TFT Active Matrix 1280x1024 LCD
0.294 mm x 0.294 mm
Anti-Glare, Hard coating (3H)
700 :1
150/135 (degrees; typ)
160/155 (degrees; typ)
16.2 million colors (6+2 bit panel)
300 cd/m2
8 ms
4 CCFL
50000 Hrs (Min)
3 mg per lamp
2 INPUT SIGNAL Video
Sync
RGB Analog (75 ohms, 0.7 / 1.0 Vp-p),
Separate Sync / Composite Sync / SOG
Fh = 24 – 82 kHz ; Fv = 50 – 75 Hz
3 COMPATIBILITY PC
Mac
PC Compatibles (from VGA up to 1280x1024 Non
Interlaced)
Power Mac (up to 1280X1024 )
4 RESOLUTION
Recommended
1280x1024 @ 60Hz
640 x 350 @ 70Hz
640 x 400 @ 60, 70Hz
640 x 480 @ 60, 67, 72, 75Hz
720 x 400 @ 70Hz
720 x 480 @ 60Hz
800 x 600 @ 56, 60, 72, 75Hz
832 x 624 @ 75Hz
1024 x 768 @ 60, 70, 75Hz
1152 x 864 @ 75Hz
1152 x 870 @ 75Hz
1152 x 900 @ 67Hz
1280 x 720 @ 60Hz
1280 x 768 @ 60, 75Hz
1280 x 960 @ 60, 75Hz
1280 x 1024 @ 60, 75Hz
5 AUDIO Speaker
1.5W x2
6 CONNECTORS
Video
Analog
DB-15
Internal Power Adapter, 3-pin plug (CEE22)
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Power
7 POWER Voltage
Consumption
Typ/Max
AC 100-240V (Universal); 50-60 Hz
32 W / 36 W
8 ERGONOMICS Tilt
20±2 ~ -5±2 degrees
9 CONTROLS
Physical
OSD Function
Key buttons
Main Menu
Short cut key
[PW], [Mute], [ 2 ], [Up], [Dn], [ 1 ]
Auto Image Adjust
Contrast/Brightness
Color Adjust
sRGB, 9300K, 7500K, 6500K, 5400K, User Color [R, G,
B]
Information
Manual Image Adjust
Horizontal Size, H/V Position, Fine Tune, Sharpness
Setup Menu
Language Select, Resolution Notice, OSD Position,
OSD Time Out, OSD Background
Memory Recall
[ 1 ] : Main Menu
[ 2 ] : Auto Image Adjust
[Up] or [Dn] : Contrast / Brightness
[Up] + [Dn] : Recall both of Contrast and Brightness to
default
[ 1 ] + [ 2 ] : Toggle 720x400 and 640x400 mode
[ 1 ] + [Up] + [Dn] : Auto White Balance
[ 1 ] + [Dn] : Power Lock
[ 1 ] + [Up] : OSD Lock
10 BANDWIDTH 135 MHz
11 OPERATING
CONDITION
Temperature
Humidity
32°F to 104°F (0°C to 40°C)
10% to 90% (no condensation)
12 STORAGE /
SHIPPING
CONDITION
Temperature
Humidity
-4°F to 140°F (-20°C to 60°C)°
10% to 90% (no condensation)
13 DIMENSIONS Physical:
(W x H x D)
Display w
Stand
Wall Mount
425.4 mm (W) x 457.2 mm (H) x 205 mm (D)
16.75" (W) x 18" (H) x 8.1" (D)
425.4 mm (W) x 397 mm (H) x 66 mm (D)
16.75" (W) x 15.6" (H) x 2.6" (D)
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Packing
(W x H x D)
497 mm (W) x 516 mm (H) x 158 mm (D)
19.6" (W) x 20.3" (H) x 6.2" (D)
14 WEIGHT Net
Gross
5.3Kg (11.7 磅)
6.6kg(14.6 磅)
15 REGULATIONS
UL/CUL, FCC ( include ICES-003B), CB, CE, TCO'03
TUV/GS, TUV Ergo(covers ISO13406-2 & MPRII), IRAM,
VCCI, GOST-R, HYGIENIC (20 copies), Energy Star(only
test report), CCC, BSMI, PSB, C-TICK, SASO,MIC,
WEEE, RoHS
16 RELIABILITY MTBF 100,000 Hr (Excluding Panel).
17 POWER SAVING
FUNCTION
"On"
" Active Off"
“Off”
Blue
Amber
Off
Normal
≦1 W
≦1 W
18 LOGISTICS Container Load
(20' / 40')
Pallet Load
UPC Code
Serial Format
EDID Code
Country of origin
Standard
640 / 1280 pieces
64 pieces
766907224924
QB9
Byte 10 – 0 x 1E, Byte 11 – 0 x 30
China
19 Wall Mount VESA 100mm x 100mm
20 OTHERS DDC/2B, KENSINGTON MicroSaver Security
Compatible, WorldWide Model.
21 Package
Contents
LCD Display
Power CableVideo Cable
Audio Cable
Quick Start Guide
ViewSonic Wizard CD-ROM
22 Packaging
Information
Carton -- One piece construction with signal wall, 0.65 Kg
Plastic Handle -- PE-LD, 12g
Poly Foam -- EPS, 207g, 2 pices
Accessory Plastic Bags -- PE-LD, 2g
The PE bag that cover monitor -- PE-LD, 18g
Pallet (M Model ) -- Fumigation wood, 22.5Kg
Pallet (Others) -- Poplar, 22.5Kg
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Product definition and specification
Product Name ViewSonic VG921m
Oracle item# VG921M-4
Model Number VS11369
OSD Languages
English, French, German, Italian, Spanish, Finnish,
Japanese, Traditional Chinese, Simplified Chinese
TFT LCD Panel and Model # HSD190ME13-A16
Scalar Realtek RTD2023L
Input Signal Analog x1
Sync Compatibility Separate Sync / Composite Sync / SOG
Adapter Internal Power Board
Power Cable
Yes,
refer to APPENDIX B: Power Cable
A
nalog Cable (1.8 m, black), with PC 2001 and
Hot Plug Detect &DDC
Yes
(Detached cable; refer the Appendix A)
DVI-D Cable(1.8m, black) with PC 2001 No
Audio Cable(1.8m, black) with PC 2001 Yes
MIC Cable(1.8m, black) with PC 2001 No
USB Cable (V2.0) No
ViewSonic CD Wizard
ViewSonic Quick Start Guide
Arabic, English, Finnish, Spanish, German,
Italian, Japanese, Swedish, Polish, Korean,
Portuguese, Russian, Turkish , French, Czech,
Hungarian, Simplified Chinese, Traditional
Chinese
PerfectSuite CD No
Screen Protector Mylar Yes
Foot Protector plastic No
Service Insert For Region code = M units only
Warranty Sticker For Region code = G units only
Warranty Card For Region code = G units only
Carton Sticker For Region code = G units only
PE bag of Carton For Region code = G units only
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4-1 GENERAL specification
Test Resolution & Frequency 1280x1024 @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls
Factory Default:
Contrast = 70%, Brightness = 100%
4-2 VIDEO INTERFACE
Input Connector (refer the Appendix A) DB-15
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 Pin out Refer to Appendix A; Compliant DDC/2B
Video Signals
Video RGB (Analog)
Separate Sync / Composite Sync / SOG
Video Impedance 75 Ohms (Analog)
Maximum PC Video Signal 950 mV with no damage to monitor
Maximum Mac Video Signal 1250 mV with no damage to monitor
Sync Signals TTL
DDC/2B Compliant with version 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 Refer to Segment 4-5
Exclusions Not compatible with interlaced video
4-3 USB INTERFACE
No USB interface
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4-4 POWER SUPPLY
Internal Power Supply Part Number:PI-SB03
Input Voltage Range
100to 240VA C
Input Frequency Range
50 to 60 Hertz
Short Circuit Protection
OUTPUT CAN BE SHORTED WITHOUT DAMAGE
Over Current Protection
6 A TYPICAL AT 5 VDC
Leakage Current
1.0 MA (MAX) AT 264VAC / 60HZ
Efficiency
80 % TYPICAL AT 115VAC FULL LOAD
Fuse
INTERNAL AND NOT USER REPLACEABLE
Power Dissipation
32 WATTS (TYP)
Max Input AC Current
1.2 ARMS @ 90VAC, 0.8 ARMS @180VAC
Inrush Current (Cold Start)
30 A @ 90 VA C, 60 A(MAX) @ 264 VAC
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 define
to be in compliance with ISO 7779 (DIN
EN27779:1991) Noise measurements of machines
acoustics. Power Switch noise shall not be considered
US Type Power Cable
Length = 1.8m. Connects to AC/DC Power Color =
Black
Power Saving Operation(Method) VESA DPMS Signaling
Power Consumption
On Mode <36 W (max)
Saving Mode< 1W Off Mode <1 W
Recovery Time
On Mode = N/A, Active Off < 3 sec
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4-5 ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
24 – 82 kHz
Vertical Refresh Rate
50 – 75 Hz
Maximum Pixel Clock 135 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
DMT
2 640 x 400 @ 60 Hz, 31.5 KHz
3 640 x 400 @ 70 Hz, 31.5 KHz
4 640 x 480 @ 50 Hz, 24.7 KHz
5 640 x 480 @ 60 Hz, 31.5 KHz
DMT
6 640 x 480 @ 67 Hz, 35 KHz
For MAC
7 640 x 480 @ 72 Hz, 37.9 KHz
DMT
8 640 x 480 @ 75 Hz, 37.5 KHz
DMT
9 720 x 400 @ 70 Hz, 31.5 KHz
10 720 x 480 @ 60 Hz, 31.5 KHz
DTV
11 720 x 576 @ 50 Hz, 31.3 KHz
DTV
12 800 x 600 @ 56 Hz, 35.1 KHz
DMT
13 800 x 600 @ 60 Hz, 37.9 KHz
DMT
14 800 x 600 @ 72 Hz, 48.1 KHz
DMT
15 800 x 600 @ 75 Hz, 46.9 KHz
DMT
16 832 x 624 @ 75 Hz, 49.7 KHz
MAC
17 1024 x 768 @ 50 Hz, 39.6 KHz
18 1024 x 768 @ 60 Hz, 48.4 KHz
DMT
19 1024 x 768 @ 70 Hz, 56.5 KHz
DMT
21 1024 x 768 @ 75 Hz, 60 KHz
DMT
23 1152 x 864 @ 75 Hz, 67.5 KHz
DMT
24 1152 x 870 @ 75 Hz, 68.7 KHz
For MAC
25 1152 x 900 @ 67 Hz, 62.5 KHz
For SUN
26 1280 x 720 @ 50 Hz, 37.5 KHz
DTV
27 1280 x 720 @ 60 Hz, 45 KHz
DTV
28 1280 x 768 @ 50 Hz, 39.6 KHz
29 1280 x 768 @ 60 Hz, 47.8 KHz
DMT;
30 1280 x 768 @ 75 Hz, 60.3 KHz
DMT;
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31 1280 x 960 @ 50 Hz, 49.4 KHz
32 1280 x 960 @ 60 Hz, 59.7 KHz
DMT
33 1280 x 960 @ 75 Hz, 75.2 KHz
34 1280 x 1024 @ 50 Hz, 52.7 KHz
35 1280 x 1024 @ 60 Hz, 64 KHz
DMT
36 1280 x 1024 @ 75 Hz, 80 KHz
DMT
*1. Tolerance ≧ ±2KHz (if no overlapping issue)
*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message without
blanking.
*3. The image quality of 85Hz mode might be worse than 75Hz.
Primary Presets
1280x1024 @ 60Hz
User Presets
Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration
Changing Modes
● Maximum Mode Change Blank Time for image stability : 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
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4-6 FRONT PANEL CONTROLS AND INDICATORS
Front Panel Hardware Controls
Power Switch (Front Head) Power Control, soft Power Switch.
Power LED (Front Head) Green – ON
Orange – Power Saving Mode
Dark = Soft Power Switch OFF
Front Panel Controls (Head)
[
] [ 1 ] [ 2 ] [▲] [▼]
[;X] Mute
[ ] Power
[ 1 ] BUTTON 1
[ 2 ] Button 2
[▲] UP ARROW BUTTON
[▼] DOWN 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] Auto Image Adjust
[▼] Brightness adjust
[▲] Contrast adjust
[▼]+ [▲] recall both of Contrast and Brightness to default
[1] + [2] 1. toggle 720x400@70Hz/640x400@70Hz mode when input one
of the two mode
2. toggle 640x480@60Hz/640x400@60Hz mode when input one
of the two mode
[1] + [▼] + [▲] White Balance. (Not shown on user’s guide)
[1] + [▼] Power Lock
[1] + [▲] OSD Lock
No signal + [2] + [ ] Burning mode
Signal + [2] + [ ] Factory Mode
Remark : All the short cuts function are only available while OSD off
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Function descriptions
Main Menu Controls
The Main Menu OSD includes most of control functions.
Please refer to APPENDIX C (Main Menu OSD Table) for the detail.
OSD Lock short cuts function for the buttons
The OSD lock will be activated by pressing the front panel control buttons "(1), & (▲)" for 10
seconds. If the user then tries to access the OSD by pressing any of the buttons "1", "▼", "▲",
"2" a message will appear on the screen for 3 seconds showing "OSD Locked". The OSD lock
will be deactivated by pressing the front panel control buttons "(1), & (▲)" again for 10 seconds.
Note1: When the OSD is locked will lock all functions, including “Volume” and “Mute”
Note 2: Status bar indicating OSD Lock or Unlock is in progress and when complete it will
indicate “OSD Locked”
Note 3: OSD Lock should not lock Power Button and Power Lock function
Power Lock short cuts function for the buttons
The power button lock will be activated by pressing the front panel control buttons "(1), & (▼)"
for 10 seconds. Locking the power button means that the user won't be able to turn off the LCD
while the power button is locked. If the user presses the power button while it is locked, a
message will appear on the screen for 3 seconds showing "Power Button Locked". It also
means that with the power button locked, the LCD would automatically turn back "On" when
power is restored after a power failure. If the power button is not in the locked mode, then power
should return to it's previous state when power is restored after a power failure. The power
button lock will be deactivated by pressing the front panel control buttons "(1), & (▼)" again for
10 seconds.
Note 1: Status bar indicating Power Button lock or unlock is in progress and when complete it
will indicate “Power Button Locked”
Note 2: Power should only be lockable in the “On State”
Memory Recall Actions
Memory Recall action as below
1. Recall white balance to factory setting
2. Set the factory defaults as shown in Section 4-8
3. Clean all the mode setting buffer
4. Execute Auto Image Adjust
Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or
Input Priority
Input Signal Notice Actions
1. The Input Signal Notice OSD appears 3 seconds when power turns on or change input
signal.
2. The Input Signal Notice OSD position is on the right-bottom side of image. And the OSD
background shall be transparent. (OSD Background = off).
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Resolution Notice Actions
1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec
2. For auto input select function, it shall meet the requirement in Appendix D.
3. 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
Factory Defaults
Item Defaults Item Defaults
Contrast 70% Input Priority N/A
Brightness 100% Resolution Notice On
Color Temperature 6500K Volume 50%
Sharpness 100% Balance N/A
OSD H. Position 50% Treble N/A
OSD V. Position 50% Bass N/A
OSD Time Out 15 720x400 / 640x400
(@70Hz)
720x400
OSD Background On 640x480 / 640x400
(@60Hz)
640x480
4-7 AUDIO INTERFACE (SPEAKER SPECIFICATION)
Speaker specification
Line input connection 3.5 mm stereo jack
Line input signal 1.0 Vrms
Line input impedance 10 kOhm
Maximum power output (Electric) 1.5 W / ch
Signal to Noise Ratio 50 dB
Frequency response 200 Hz – 20 Khz(-10db)
Distortion < 15 % THD (@1kHz)
Vibration
There should be no audible vibration with volume at 100%
and treble / bass at default.
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 should be off when the rest of the monitor is in
power saving.
* No any sympathetic or abnormal noise allowed.
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4-8 TFT LCD PANEL
Panel Characteristics :
1st Source Panel
Model number HSD190ME13-A16
Type Active Matrix TFT, TN technology
Active Size 19” (337.8mm x 301mm)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.294 mm
Glass Treatment Anti-Glare, Hard coating (3H)
# of Backlights 4 CCFL
Backlight Life 50000 Hrs (Min)
Luminance (Center) –
CT = 6500K,
Contrast/ Brightness = Max
300 cd/m2 (Typ after 30 minute warm up)
240 cd/m2 (Min after 30 minute warm up)
Brightness Uniformity (13 points) 80 % (Typ) / 75 % (Min)
Contrast Ratio 700 :1 (Typ)
450 : 1 (Min)
Color Depth 16.2 million colors (6+2 bit panel)
Horizontal Viewing Angle
150 degrees (Typ) / 130 degrees (Min) @ CR>10
160 degrees (Typ) / TBD (Min) @ CR>5
Vertical Viewing Angle
135 degrees (Typ) / 110 degrees (Min) @ CR>10
TBD degrees (Typ) / TBD (Min) @ CR>5
Response Time
On-Off
10%-90% @ Ta=25°C 8ms (Typ) / 16ms (Max)
Mercury 3.0 mg per lamp
Panel Defects Please see Panel Quality Specifications.
*Over 50% units of shipment shall be equal or better than the Typical value above.
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4-9 IMAGE PERFORMANCE
Display Size
Horizontal Display Size, Primary Preset Full Screen
Vertical Display Size, Primary Preset Full Screen
Luminance
Lv (Max) –Condition:
Brightness / Contrast = 100%
CCT = USER COLOR (R/G/B=100%)
Lv (Max) = The Luminance requirement of
section 4-6 “TFT LCD PANEL”
Lv (Def) –Condition:
Brightness / Contrast = 100%
Color Temperature = 6500K / sRGB
Lv (Def) / Lv (Max) x 100% > 95%
Lv (sRGB/6500K) –Condition:
Brightness / Contrast = Default
CCT = 6500K / sRGB
Lv (sRGB/6500K) / Lv (Max) x 100% > 85%
Lv (9300K) –Condition:
Brightness / Contrast = Default
CCT = 9300K
Lv (9300K) / Lv (Def) x 100% > 70%
Lv (7500K) –Condition:
Brightness / Contrast = Default
CCT = 7500K
Lv (7500K) / Lv (Def) x 100% > 80%
Lv (5400K) –Condition:
Brightness / Contrast = Default
CCT = 5400K
Lv (5400K) / Lv (Def) x 100% > 85%
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%
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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%
Saturation
Contrast = Default
Brightness = Default
Test pattern = 128-gray
NO VISIBLE SATURATION
* ≧50% UNITS OF SHIPMENT SHALL BE
EQUAL OR BETTER THAN TYPICAL CR
SPEC.
Contrast = 100%
Brightness = 100%
Test pattern = 64-gray
6~8 - LEVEL SATURATION
Preset Color Temperatures
sRGB It should meet IEC 61966-2-1 (1999-10) standard.
CCT (typ) = 9300K (u’CCT=0.1888; v’ CCT=0.4457)
CCT (max) = 10250K, CCT (min) = 8500K
Preset 1
Δu’v’<0.01 (@ Full White pattern)
CCT (typ) = 7500K (u’CCT=0.1935; v’ CCT=0.4586)
CCT (max) = 8100K, CCT (min) = 6980K
Preset 2
Δu’v’<0.01 (@ Full White pattern)
CCT (typ) = 6500K (u’CCT=0.1978; v’ CCT=0.4684)
CCT (max) = 6950K, CCT (min) = 6100K
Preset 3 (Primary)
Δu’v’<0.01 (@ Full White pattern)
CCT (typ) = 5400K (u’CCT=0.2044; v’ CCT=0.4808)
CCT (max) = 6185K, CCT (min) = 4935K
Preset 4
Δu’v’<0.01 (@ Full White pattern)
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.
Power light
Blue = ON
Orange = Power Saving
Standby Power On/Off
Displays the Main Menu or exits the control screen and saves
adjustments.
Audio Mute button turns the sound off
Displays the control screen for the highlighted control.
Also a shortcut to Auto Image Adjust.
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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 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 1280 x 1024 @ 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 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.
Audio Adjust
Volum e 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.
9300K-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.
5000K-Adds blue and green to the screen image for a darker color.
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Control Explanation
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 1280 x 1024 @ 60Hz (recommended) means that the resolution
is 1280 x 1024 and the refresh rate is 60 Hertz.
Manual Image Adjust
H. Size (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.
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Control Explanation
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.
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 1280 x 1024, the following screen appears.
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Control Explanation
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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