Viewsonic VA1912W-2W Service Manual

Service Manual

ViewSonic VA1912w-2

VA1912wb-2

Model No. VS10866

19” Color TFT LCD Display

(VA1912w-2_VA1912wb-2_SM Rev. 1b Aug. 2006)

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - [phone]

Copyright

Copyright © 2006 by ViewSonic Corporation. All rights reserved. No part of this publication
may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language or computer language, in any form or by any means, electronic, mechanical, magnetic,
optical, chemical, manual or otherwise, without the prior written permission of ViewSonic
Corporation.

Disclaimer

ViewSonic makes no representations or warranties, either expressed or implied, with respect to
the contents hereof and specifically disclaims any warranty of merchantability or fitness for any
particular purpose. Further, ViewSonic reserves the right to revise this publication and to make
changes from time to time in the contents hereof without obligation of ViewSonic to notify any
person of such revision or changes.

Trademarks

Optiquest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.

Revision History

Revision SM Editing Date ECR Number Description of Changes Editor

1a 04/14/2006 Initial Release Jamie Chang

1b 8/09/2006 VS-E060210 Add VA1912wb-2 from VA1912w-2 Jamie Chang

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TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 3

3. Front Panel Function Control Description 10

4. Circuit Description 16

5. Adjustment Procedure 17

6. Troubleshooting Flow Chart 37

7. Recommended Spare Parts List 45

8. Exploded Diagram and Exploded Parts List 50

9. Block Diagram 52

10. Schematic Diagrams 53

11. PCB Layout Diagrams 60

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1. Precautions and Safety Notices

1. Appropriate Operation

(1) Turn off the product before cleaning.
(2) Use only a dry soft cloth when cleaning the LCD panel surface.
(3) Use a soft cloth soaked with mild detergent to clean the display housing.
(4) Use only a high quality, safety approved AC/DC power cord.

(5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time.
(6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off.
(7) Do not touch the LCD panel surface with sharp or hard objects.
(8) Do not place heavy objects on the LCD display, video cable, or power cord.
(9) Do not use abrasive cleaners, waxes or solvents for your cleaning.
(10) Do not operate the product under the following conditions:

- Extremely hot, cold or humid environment.

- Areas containing excessive dust and dirt.

- Near any appliance generating a strong magnetic field.

- In direct sunlight.

2. Caution

No modification of any circuit should be attempted. Service work should only be performed after you are thoroughly

familiar with all of the following safety checks and servicing guidelines.

3. Safety Check

Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit, the voltage is

exposed in such areas as the associated transformer circuits.

4. LCD Module Handling Precautions

4.1 Handling Precautions

(1) Since front polarizer is easily damaged, pay attention not to scratch it.
(2) Be sure to turn off power supply when connecting or disconnecting input connector.
(3) Wipe off water drops immediately. Long contact with water may cause discoloration or spots.
(4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.
(5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.
(6) Since CMOS LSI is used in this module, take care of static electricity and ensure human earth when handling.
(7) Do not open or modify the Module Assembly.
(8) Do not press the reflector sheet at the back of the module in any direction.
(9) In the event that a Module must be put back into the packing container slot after it was taken out of the container, do

not press the center of the CCFL Reflector edge. Instead, press at the far ends of the CFL Reflector edge softly. Otherwise
the TFT Module may be damaged.

(10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate or tilt the Interface Connector of

the TFT Module.

(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or bend the

TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no
bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be damaged.

(12) The cold cathode fluorescent lamp in the LCD contains a small amount of mercury. Please follow local ordinances or

regulations for disposal.

(13) The LCD module contains a small amount of materials having no flammability grade. The LCD module should be

supplied with power that complies with the requirements of Limited Power Source (IEC60950 or UL1950), or an
exemption should be applied for.

(14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950 or UL1950).

Do not connect the CCFL to a Hazardous Voltage Circuit

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Correct methods : Incorrect Methods :

Only touch the metal-frame of the panel or the front

cover of the monitor.

Do not touch the surface of the polarizer .

Surface of the panel is pressed by fingers & this may

cause “ MURA “

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

That may cause “ MURA“.

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

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That could scratch the surface of panel

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2. Specification

2.1 INSTRUCTION

FEATURES VA1912w-2 / VA1912wb-2

Size 19” wide

Luminance (Typ, cd/㎡) 300 cd/㎡

Contrast Ratio (Typ) 500:1

TFTLCD PANEL

Input Signal

Sync Compatibility

Compatibility

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

Power Consumption

Audio Amplifier / Speaker 1.5 W / 2.5W x 2

Colors ( 6 bit + 2 bit FRC) 16.2 M colors

Response Time (Typ) 8 ms

Viewing Angle (H/V) 150 ° / 130 °

Recommend resolution 1440 x 900@60Hz

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

Digital No

Separate Sync Yes

Composite Sync No

Sync on Green No

PC Yes

Power Mac Yes

TV Box (NextVision 6) Yes

On Mode(Max / Typ) 36W(max) / 32W(typ)

Active Off Mode (Max) 2W

Tilt ( 20 ° to -5 °)

Swivel No

Ergonomics

Pivot No

Height Adjust No

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

451 x 391 x 197 (mm)

Physical (W x H x D mm)

17.8 x 15.4 x 7.8 (in)

Dimension

538 x 470 x 158 (mm)

Package (W x H x D mm)

21.2 x 18.5 x 6.2 (in)

Physical (Net kg/lb) 4.5kg (9.9lb)

Weight

Package (Gross Kg/lb) 6.2kg (13.7lb)

Temperature (℉/℃) 41℉-95℉/+5℃-+35℃

Operating Condition

Humidity (%) 20 % - 80 %

Temperature (℉/℃) -4℉-131℉/-20℃-55℃

Storage Condition

Humidity (%) 20 % - 85 %

CB / TCO99 / UL/cUL / FCC-B / ICES 003 / Argentina-TUV/S / NOM / EPA Energy

Ye s

Regulation

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Star / TUV/Ergo / ISO13406-2 / TUV/GS / CE / GOST-R / SASO / BSMI / PSB /

C-Tick / Korea (MIC) / CCC

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2.2 GENERAL SPECTION

Test Resolution & Frequency 1440 x 900 @ 60Hz

Test Image Size Full Size

Contrast and Brightness Controls

2.3 VIDEO INTERFACE

Factory Default:

Contrast = 70%, Brightness = 100%

Analog Input Connector DB-15 (Analog), refer the appendix A

Digital Input Connector N/A

Default Input Connector Defaults to the first detected input

Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes

Video Cable Connector DB-15 Pin out Compliant DDC 2B

Video RGB (Analog)

Video Signals

Video Impedance 75 Ohms (Analog)

Maximum PC Video Signal 950 mV with no damage to monitor

Maximum Mac Video Signal 1250 mV with no damage to monitor

Separate

Sync Signals TTL

DDC 2B Compliant with Revision 1.3

Sync Compatibility Separate Sync

Video Compatibility

Resolution Compatibility

Exclusions Not compatible with interlaced video

Shall be compatible with all PC type computers,

Macintosh computers, and after market video cards

640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x

600, 832 x 624, 1024 x 768, 1152 x 864, 1280 x 768,

1280 x 960, 1280 x 1024, 1440 x 900

* The image vertical size might not be full screen.

But the image vertical position should be at the center.

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2.4 POWER SUPPLY

Power Supply (Adapter) Part Number: 27-D003247

Input Voltage Range

Input Frequency Range

Short Circuit Protection

Over Current Protection

Leakage Current

Efficiency 80 % TYPICAL AT 100VAC @60HZ

Fuse

Power Dissipation

Max Input AC Current

Inrush Current (Cold Start) 80 A @ 240VAC , 50HZ

Power Supply Cold Start

Power Supply Transient Immunity

Power Supply Line Surge Immunity

90 to 264 VAC

47 to 63 Hertz

OUTPUT CAN BE SHORTED WITHOUT DAMAGE

FUSE 3.15A TYPICAL AT 250 VA C

75 MA (MAX) AT 240VAC / 50HZ

INTERNAL AND NOT USER REPLACEABLE

36 WATT S

1.6 ARMS @ nominal RANGE

SHALL START AND FUNCTION PROPERLY WHEN
UNDER FULL LOAD, WITH ALL COMBINATIONS
OF INPUT VOLTAGE, INPUT FREQUENCY, AND
OPERATING TEMPERATURE
SHALL BE ABLE TO WITHSTAND AN EN61000-4-4
±2KV TRANSIENT TEST WITH NO DAMAGE

Shall be able to withstand ±2KV (L-L) and ±2.3KV

(L-PE) with no damage

Power Supply Missing Cycle Immunity

Power Supply Acoustics

US Type Power Cable

European Type Power Cable

CCC Type Power Cable

Shall be able to function properly, without reset or visible

screen artifacts, when ½ cycle of AC power is randomly

missing at nominal input

The power supply shall not produce audible noise that

would be detectable by the user. Audible shall defined

to be in compliance with ISO 7779 (DIN EN27779:1991)

Noise measurements of machines acoustics. Power

Switch noise shall not be considered

Separate 3-prong NEMA 5-15P type plug. Length =

1.8m. Connects to display.

Color = Black

Schuko CEE7-7 type plug.

Length = 1.8m, Connects to display.

Color = Black

Separate 3-prong type plug.

Length = 1.8m. Connects to display.

PSE Type Power Cable

Power Saving Operation(Method) VESA DPMS Signaling

Power Consumption

Recovery Time

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Color = Black

Separate 2-prong NEMA 1-15P type plug. Length =

1.8m. Connects to display.

Color = Black

ON Mode < 36 W (max) / 32 W (typ)

ACTIVE OFF < 1 W
ON Mode = N/A, ACTIVE OFF < 5 sec

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2.5 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency

Vertical Refresh Rate

Maximum Pixel Clock 135 MHz (EDID file is 140MHz)

Sync Polarity Independent of sync polarity.

30 – 82 kHz

50 – 85* Hz.

Timing Table

Item Timing Analog Digital

1 640 x 350 @ 70Hz, 31.5kHz Yes No
2 640 x 4 00 @ 60Hz, 31.5kHz Yes* No
3 640 x 400 @ 70Hz, 31.5kHz Yes No

4 640 x 4 80 @ 60Hz, 31.5kHz Yes No
5 640 x 4 80 @ 67Hz, 35.0kHz Yes No
6 640 x 4 80 @ 72Hz, 37.9kHz Yes No
7 640 x 4 80 @ 75Hz, 37.5kHz Yes No

8 640 x 480 @ 85Hz, 43.27kHz Yes No

9 720 x 4 00 @ 70Hz, 31.5kHz Yes No
10 800 x 600 @ 56Hz, 35.1kHz Yes No
11 800 x 600 @ 60Hz, 37.9kHz Yes No
12 800 x 600 @ 75Hz, 46.9kHz Yes No
13 800 x 600 @ 72Hz, 48.1kHz Yes No

14 800 x 600 @ 85Hz, 53.7kHz Yes No

15 832 x 624 @ 75Hz, 49.7kHz Yes No
16 1024 x 768 @ 60Hz, 48.4kHz Yes No
17 1024 x 768 @ 70Hz, 56.5kHz Yes No

18 1024 x 768 @ 72Hz, 58.1kHz Yes No

19 1024 x 768 @ 75Hz, 60.0kHz Yes No

20 1024 x 768 @ 85Hz, 68.67kHz Yes No

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

*The image vertical size might not be full screen.

Primary Presets

1440 x 900 @ 60Hz

User Presets

Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration

Changing Modes

● Maximum Mode Change Blank Time for image stability : 3 seconds (Max), excluding “Auto Adjust” time

● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), there is no “Auto Adjust” feature.

● The monitor needs to do “Auto Adjust” the first time a new mode is detected but except the DOS mode 640 x 350, 720 x

400 & 640 x 400.(see section “0-Touch™ Function Actions”)

● While running Change Mode, Auto Adjust or Memory Recall, the image shall blank

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2.6 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 – Active Off

Dark = Soft Power Switch OFF

Front Panel Controls (Head)

[;X] [ 1 ] [▼] [▲] [ 2 ] [

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

Short Cuts Function from the button(s)

[1] Main Menu

[2] Adjust Contrast / Brightness

[▼] or [▲]

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

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

]

To immediately activate Contrast menu. It should be change to Brightness OSD by

push button [2]

[

] Power

[ 1 ] BUTTON 1

[ 2 ] Button 2

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

Note: Power Button, Button 1 and Button 2 and Mute Button must be

one-shot logic operation. (i.e. there should be no cycling)

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

[1] + [▼] Power Lock

[1] + [▲] OSD Lock

[;X] Audio Mute on /off

Remark : All the short cuts function are only available while OSD off

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Main Menu Controls

Auto Image Adjust*
Contrast/Brightness*
Audio Adjust

Vo l u m e *

4

, Mute*4

1

2*4

Color Adjust

sRGB, 9300K, 6500K(default), 5400, 5000, User Color [R, G, B]
Information
H Frequency, V Frequency, Resolution, Pixel Clock, Serial Number,

Model Number, “www.ViewSonic.com
Manual Image Adjust
H. Size*

1

, H./V. Position*1, Fine Tune*1, Sharpness*3

”

Setup Menu

Language [English, French, German, Spanish, Italian, Finnish, Japanese, Traditional Chinese, Simplified Chinese],

Resolution Notice, OSD Position, OSD Timeout, OSD Background

Memory Recall

1

These functions are not available in Digital Mode

*

2

These functions are not available under sRGB Mode

*

3

These functions are not available under Native Resolution Mode

*

4

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

*

[Remark] Please refer to the detail in the Appendix C

Function descriptions

OSD Lock short cuts function for the buttons

The OSD lock will be activated by pressing the front panel control buttons "(1), & (▲)" for 10 seconds. If the user then tries to
access the OSD by pressing any of the buttons "1", "▼", "▲", "2" a message will appear on the screen for 3 seconds showing
"OSD Locked". The OSD lock will be deactivated by pressing the front panel control buttons "(1), & (▲)" again for 10
seconds.
Note1: When the OSD is locked will lock all functions, including “Volume” and “Mute”
Note 2: Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD Locked”
Note 3: OSD Lock should not lock Power Button and Power Lock function
Power Lock short cuts function for the buttons
The power button lock will be activated by pressing the front panel control buttons "(1), & (▼)" for 10 seconds. Locking the
power button means that the user won't be able to turn off the LCD while the power button is locked. If the user presses the
power button while it is locked, a message will appear on the screen for 3 seconds showing "Power Button Locked". It also
means that with the power button locked, the LCD would automatically turn 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 on the analog and digital mode as below

1. Set the factory defaults as shown in Section 4-8

2. Clean all the mode setting buffer

3. Execute Auto Image Adjust

Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or Input Priority

Resolution Notice Actions

1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec

2. The OSD should disappear after 10 sec or by pushing button [1] or [2]
Resolution Notice function should be disabled when push button [2] under Resolution Notice OSD

0-Touch™ Function Actions

1. Execute Auto Image Adjust when new mode detected, and save the settings to buffer for further use

2. It should be reset by Memory Recall function
(Should not reset by power off, power unplug and others)

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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

2.7 AUDIO INTERFACE (SPEAKER SPECIFICATION)

Line input connection

Line input signal 1 Vrms

Line input impedance 20k ohms

Maximum power output (Electric)

Signal to Noise Ratio 72 dB

Frequency response 300 TO 20KHZ

Distortion 8%@1kHz

Vibration

3.5 mm stereo jack

1.5W / CH

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

signal within 1 Vrms)

Screen image

Connector PC99 requirement Audio in

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

Audio DPMS

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

conditions

Lime Green pantone # 577C

NOTE: THERE IS NO GUARANTEE <1 W POWER
CONSUMPTION IN ACTIVE OFF MODE, WHEN THE AUDIO
CABLE IS CONNECTED

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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.

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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 you want to adjust, press or to scroll up or down the Main Menu.

3. After the 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 or down 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 1440 x 900 @ 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 and down 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

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).

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.

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, press and . .

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 pr

eset.

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Control Explanation

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 1440 x 900 @ 60Hz (recommended) means that the resolution is 1440 x 900 and the

refresh rate is 60 Hertz.

Manual Image Adjust Sub-menu

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 1440

x 900, 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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4. Circuit Description

The TSUM17AK is total solution graphics processing IC for LCD monitors with panel resolutions up to SXGA. It is configur ed with
a high-speed integrated triple-ADC/PLL,, a high quality display processing engine, and an integrated output display interface t hat can
support RSDS panel interface format. To further reduce system costs, the TSUM17AK also integrates intelligent power management
control capability for green-mode requirements and spread- spectrum support for EMI management.

The TSUM17AK incorporates the world’s first coherent oversampled RGB graphics ADC in a monitor controller system. The
oversampling ADC samples the input RGB signals at a frequency that is much higher than the signal source pixel rate. This can
preserve details in the video signal that ordinarily would be lost due to input signal jitter or bandwidth limitations in non-o versampled
systems. The TSUM17AK also incorporates a new Dynamic Frame Rate (DFR) generator
panel that preserves the advantages of a fixed output clock rate, while eliminating the output end of frame short-line.

for the digital output video to the display

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5. Adjustment Procedure

A. Function Test and Alignment Procedure

1. All Modes Reset
You should do “All Model Reset” (Refer to Chap 3. Hot Keys for Function Controls) first. This action will allow
you to erase all end-user’s settings and restore the factory defaults.

2. Auto Image Adjust
The Auto Adjust is aimed to offer a best screen quality by built-in ASIC. For optimum screen quality, the user
has to adjust each function manually.

A.Turn the computer and LCD monitor on.
B. Press the ‘Auto’ button on monitor keypad to Auto Adjust.
C. The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive seconds, during

which time you will notice the image change.

3. Firmware
Test Patten: Burn in Model (Refer to Chap3. Hot Keys for Function Control)

-Make sure the F/W is the latest version.

4. DCC
Test Patten: EDID program

-Make sure it can pass test program.

5. Window Shut Down
Test Signal: 1280*1024@60Hz
Test Pattern:

Checkered Pattern Every One Pixel (50%Green & 50%Blue)
Inspection Item: Flicker, Mura

6. Window BG
Test Signal: 1280*1024@60Hz
Test Pattern:

Window standard pattern
Inspection Item: Line Defect, Function Defect & Mura

7. 25 Gray
Test Signal: 1280*1024@60Hz

Test Pattern:

Full Screen 25% White (Gray)
Inspection Item: Particle, Line Defect & Mura

8. 50 Gray
Test Signal: 1280*1024@60Hz
Test Pattern:

Full Screen 50% White (Gray)
Inspection Item: Bright Dot, Particle, Line Defect & Mura

9. White Box
Test Signal: 1280*1024@60Hz
Test Pattern:

Window standard pattern
Inspection Item: Particle, Line Defect, Power, Image Remain & Mura

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