ViewSonic VA912-2,VS10696-2E Service manual

Service Manual

ViewSonic VA912-2

Model No. VS10696-2E

19” Color TFT LCD Display

(VA912-2 Rev. 1a Feb. 2006)

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

Copyright

Copyright © 2005 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 aregistered 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

1a 02/07/2006 Initial release Jamie Chang

Description of Changes Editor

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TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 4

3. Front Panel Function Control Description 10

4. Circuit Description 15

5. Adjustment Procedure 20

6. Troubleshooting Flow Chart 43

7. Recommended Spare Parts List 58

8. Exploded Diagram and Exploded Parts List 61

9. Block Diagram 62

10. Schematic Diagrams 63

11. PCB Layout Diagrams 84

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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.

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(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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Handing and Placing methods

Correct methods : Incorrect Methods :
Only touch the metal-frame of the panel or the front
cover of the monitor.
Do not touch the surface of the polarizer .

Surface of the panel is pressed by fingers & this may
cause “ MURA “

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

That may cause “ MURA“.

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

That could scratch the surface of panel

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2. SPECIFICATION

2.1 INTRODUCTION

FEATURES VA912-2

Size 19”

Luminance (Typ, cd/㎡) 300 cd/㎡

Contrast Ratio (Typ) 800:1

TFTLCD PANEL

Input Signal

Sync Compatibility

Compatibility

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

Power Consumption

Audio 1.5 W Yes

Ergonomics

OSD Control

Dimension

Weight

Operating Condition

Storage Condition

Regulation

Colors ( 6 bit + 2 bit FRC) 16.2 M colors
Response Time (Typ) 16 ms
Viewing Angle (H/V) 170 ° / 170 °
Recommend resolution 1280x1024@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) 65W / 60W
Active Off Mode (Max)

Tilt ( 20 ° +-2° - -5 °+-1.5°) Yes

Swivel No
Pivot No
Height Adjust No

[; X] [ 1 ] [▼] [▲] [ 2 ] [

Physical (W x H x D mm) 424 x 442 x 186
Package (W x H x D mm) 480 x 524 x 228
Physical (Net kg/lb) 5.5kg/12.1lb
Package (Gross Kg/lb) 8.1kg/17.9lb

Temperature (℉/℃) 41℉-95℉/+5℃-+35℃

Humidity (%) 20 % - 80 %

Temperature (℉/℃) -4℉-131℉/-20℃-55℃

Humidity (%) 20 % - 85 %
UL, cUL, FCC-B, CB, CE, NOM, TUV/GS, TUV ERGO (covers ISO13406-2 &
MPRII), TCO99, GOST-R + 20 ORIGINAL COPIES HYGIENIC, SASO, PCBC,
VCCI, BSMI, CCC, (PSB), (C-TICK), TUV-S, Green Mark,

]

≦3 W

Ye s

2.2 GENERAL specification

Test Resolution & Frequency 1280x1024 @ 60Hz
Test Image Size Full Size

Contrast and Brightness Controls

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Factory Default:
Contrast = 70%, Brightness = 100%

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2.3 VIDEO INTERFACE

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 Signals

1. Video RGB (Analog)

Separate
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 Revision 1.3
Sync Compatibility Separate Sync

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 870, 1280 x 720,

Resolution Compatibility

1280 x 960, 1280 x 1024

* 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

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2.5 ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency 30 – 82 KHZ
Vertical Refresh Rate 50 – 85* HZ.
Maximum Pixel Clock 135 MHz (EDID data is 140MHz)

Sync Polarity Independent of sync polarity.

Timing Table

Item Timing Analog

1 640 x 350 @ 70Hz, 31.5kHz Yes
2 640 x 400 @ 60Hz, 31.5kHz Yes
3 640 x 400 @ 70Hz, 31.5kHz Yes
4 640 x 480 @ 60Hz, 31.5kHz Yes
5 640 x 480 @ 67Hz, 35.0kHz Yes
6 640 x 480 @ 72Hz, 37.9kHz Yes
7 640 x 480 @ 75Hz, 37.5kHz Yes
8 640 x 480 @ 85Hz, 43.27kHz Yes

9 720 x 400 @ 70Hz, 31.5kHz Yes
10 800 x 600 @ 56Hz, 35.1kHz Yes
11 800 x 600 @ 60Hz, 37.9kHz Yes
12 800 x 600 @ 75Hz, 46.9kHz Yes
13 800 x 600 @ 72Hz, 48.1kHz Yes
14 800 x 600 @ 85Hz, 53.7kHz Yes
15 832 x 624 @ 75Hz, 49.7kHz Yes
16 1024 x 768 @ 60Hz, 48.4kHz Yes
17 1024 x 768 @ 70Hz, 56.5kHz Yes
18 1024 x 768 @ 72Hz, 58.1kHz Yes
19 1024 x 768 @ 75Hz, 60.0kHz Yes
20 1024 x 768 @ 85Hz, 68.67kHz Yes
21 1152 x 870 @ 75Hz, 68.7kHz Yes
22 1280 x 1024 @ 60Hz, 63.4kHz Yes
23 1280 x 1024 @ 75Hz, 79.97kHz Yes
24 1280x 720 @ 60Hz, 45kHz (HDTV) Yes

Note 1:When Vertical frequency at 85Hz or resolution, the vertical image size might not be full screen. But the
vertical image position should be at the center.

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 : 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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2.4 POWER SUPPLY

Power Supply (Adapter) Part Number: UP065B1190 or ADP-65MB

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 5.13 A typical at 18.1 VDC
Leakage Current 0.25mA (Max) at 264VAC / 50Hz
EFFICIENCY 80 % typical at 115VAC Full Load
Fuse Internal and not user replaceable
Power Dissipation 65 Watts
Max Input AC Current 1.8Arms @ 90VAC,
INRUSH CURRENT (COLD START) 100 A @ 240VAC , 50Hz

Shall start and function properly when under full load,

Power Supply Cold Start

with all combinations of input voltage, input frequency,
and operating temperature

Power Supply Transient Immunity

Power Supply Line Surge Immunity

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
Shall be able to function properly, without reset or visible

Power Supply Missing Cycle Immunity

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

Power Supply Acoustics

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 =

US Type Power Cable

1.8m. Connects to display.
Color = Black
Schuko CEE7-7 type plug.

European Type Power Cable

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

CCC Type Power Cable

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

PSE Type Power Cable

1.8m. Connects to display.
Color = Black

Power Saving Operation(Method) VESA DPMS Signaling

Power Consumption

ON Mode < 65 W (max) / 60W (typ)
ACTIVE OFF < 3W

Recovery Time ON MODE = N/A, ACTIVE OFF < 5 SEC

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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 ] [

]

] Power

[

[ 1 ] Button 1

[ 2 ] Button 2

[▲] Up arrow button

[▼] Down arrow button

[; X] MUTE

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

Button 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) or Auto Image Adjust.

[▼] or [▲] To immediately activate Contrast menu. It should be change to Brightness

OSD by push button [2]

[▼] + [▲] 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)

[1] + [▼] Power Lock
[1] + [▲] OSD Lock

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

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

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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. 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

Resolution Notice Ac tions

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

2. The OSD should disappear after 10 sec or by pushing button [1] or [2]

Resolution Notice function should be disabled when push button [2] under Resolution Notice OSD

0-Touch™ Function Actions

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

2. It should be reset by Memory Recall function

(Should not reset by power off, power unplug and others)
OSD Auto Save

The OSD shall save new settings when it is turned off by the user or when it times out. There shall not be a

separate save

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.7 AUDIO INTERFACE (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 @ < 8% distortion
Signal to Noise Ratio 72 dB

Frequency response 500 Hz – 20 Khz

Distortion

Vibration

Screen image

Connector PC99 requirement Audio in Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length

Audio DPMS

< 8 % THD (@1kHz)

There should be no audible vibration with volume at
100%. (Input signal within 1 Vrms)

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

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 OnView® controls which
display on the screen. The OnView controls are explained at the top of the next page and are
defined in “Main Menu Controls” .

Main Menu

with OnView controls

Front Control Panel

shown below in detail

Displays the Main Menu or

exits the control screen and

saves adjustments.

Audio Mute

button turns

the sound off

Scrolls through menu options and
adjusts the displayed control.

Also a shortcut to display the Contrast
adjustment control screen.

Displays the control screen
for the highlighted control.

Also toggles between two
controls on some screens.

Power light
Green = ON
Orange = Power Saving

Standby Power
On/Off

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Do the following to adjust the screen image:

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

NOTE: All OnView 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 S or T 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 control, 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 your computer's graphic card so that it outputs a video signal 1280 x 1024 @ 60Hz
to the LCD display. (Look for instructions on “changing the refresh rate” in your graphic
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.

Audio Adjust

Vol ume increases the volume, decreases the volume, and mutes the audio.

Mute temporarily silences audio output.

Color Adjust provides several color adjustment modes: preset color

temperatures and RGB which allows you to adjust red (R), green (G), and blue
(B) separately. 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, 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.

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Control Explanation

Information displays the timing mode (video signal input) coming from the
graphics card in your computer, the LCD model number, the serial number, and
the ViewSonic website URL. See your graphic cards 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 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.

Fine Tune sharpens the focus by aligning the text and/or graphic characters.

NOTE: Try Auto Image Adjust first.

Sharpness adjusts the clarity and focus of the screen image.

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Control Explanation

Setup menu displays the menu shown below:

Language allows you to choose the language used in the menus and control

screens.

Resolution Notice allows you 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.

OSD Position allows you to move the on-screen display menus and control
screens.

OSD Timeout sets the length of time the on-screen display 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 On/Off allows you to turn the On-Screen Display
background On or Off.

Memory Recall returns the adjustments back to factory settings if the display is
operating in a factory Preset Timing Mode listed in the Specifications of this
manual.

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4. Circuit Description

1. Power supply (DC/DC Converter)

The AT1741 is 2-channel PWM switching regulator controllers that contains an
on-chip 2.5V reference, two error amplifier, an adjustable oscillator, two
dead-time comparators, under voltage lockout circuitry and 2 common-emitter
output. It is idea for step-up, step-down, and inverting converter.

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2. Flash Memory

The F29C51001T/F29C51001B is a 1 Megabit, 5.0 Volt-only Flash Memory organized as 131,072
bytes of 8 bits each. This device is designed to use a 4.7 Volt to 5.3 Volt power supply to perform
in-system programming.
The 1 Megabit memory array is divided into thi rt y -t wo uniform blocks of 4 Kbytes each for data and/or
code storage.

The block architecture allows users to flexibly make chip erase or block erase operation. The block
erase feature allows a particular block to be erased and reprogrammed without affecting the data in
other blocks. After the device performs chip erase or block erase operatio n , it can be re pr og rammed on
a byte-by-byte basis.

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3. GM5120

The gm5116/26 is a graphic processing IC for Liquid Crystal Display (LCD) monitors at XGA/SXGA
resolution. It provides all key IC functions required for the highest quality LCD monitors. On-chip
functions include a high-speed triple-ADC and PLL, Ultra-Reliable DVI

TM

receiver, a high quality
zoom and shrink scaling engine, an on-screen display (OSD) controller, digital color controls and an
on-chip microcontroller (OCM). With this level of integration, the gm5116/26 devices simplify and
reduce the cost of LCD monitors while maintaining a high-degree of flexibility and quality.

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4. LVDS (THC63LVDM83A)

The THC63LVDM83A transmitter converts 28 bits of CMOS/TTL data into LVDS (Low Voltage
Differential Signaling) data stream. A phase-locked transmit clock is transmitted in parallel with the
data streams over a fifth LVDS link. The HC63LVDM83A can be programmed for rising edge or
falling edge clocks through a dedicated pin. The THC63LVDF84A receiver converts the LVDS data
streams back into 28 bits of CMOS/TTL data with falling edge clock. At a transmit clock frequency of
85MHz, 24 bits of RGB data and 4 bits of LCD timing and control data (HSYNC, VSYNC, CNTL1,
CNTL2) are transmitted at a rate of 595 Mbps per LVDS data channel.

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5. Micro Controller

The MTV312M micro-controller is an 8051 CPU core embedded device especially tailored for
CRT/LCD Monitor applications. It includes an 8051 CPU core, 1024-byte SRAM, 14 built-in PWM
DACs , VESA DCC interface, 4 -channel A/D converter , and a 64K-byte internal program
FLASH-ROM.

6. TSU57AK

The TSU57AK is a high performance, and fully integrated graphics process IC solution for LCD
m onitors with resolution up to SXGA. It is configured with an integrated triple-ADC/PLL, a high
quality scaling engine, an on-screen display controller, a built-in output clock generator, a panel timing
controller (TCON), an integrated DVI receiver, and RSDS display interface. To further reduce system
costs, the TSU57AK also integrates intelligent power management control capability for green-mode
requirements and spread-spectrum support for EMI management.

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5. Adjusting 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

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7. 25 Gray

8. 50 Gray

Test Signal: 1280*1024@60Hz

Test Pattern:

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

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

10. Black Box

Test Signal: 1280*1024@60Hz
Test Pattern:

Window standard pattern
Inspection Item: Bright Dot, Line Defect & Power

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11. RED
Test Signal: 1280*1024@60Hz
Test Pattern:

Full Screen Red
Inspection Item: Bright Dot, Partial & Line Defect

12. Green
Test Signal: 1280*1024@60Hz
Test Pattern:

Full Screen Green
Inspection Item: Bright Dot, Partial & Line Defect

13. Blue
Test Signal: 1280*1024@60Hz
Test Pattern:

Full Screen Green
Inspection Item: Bright Dot, Partial & Line Defect

14. Gray_Scale_0-100_V64
Test Signal: 1280*1024@60Hz
Test Pattern:

Vertical 64 (256) Gray Scale (Right → Left，From 0 to 100% White)
Inspection Item: Line Defect & Function Defect

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15. Function Test Display pattern

Item Pattern Description Remark

1

2

3
4
5
6
7
8

Gray_Scale_0-100_V

Gray_Scale_0-100_H

Black Full Screen Black Figure 3

Red Full Screen 50% Red Figure 4

Green Full Screen 50% Green Figure 5

Blue Full Screen 50% Blue Figure6

White Full Screen White Figure7

Black_Tile Black Tile Under White Background Figure 8

Vertical 64 (256) Gray Scale (右→左，From 0

Figure 1

to 100% White)

Horizontal 64 (256) Gray Scale (上→下，From

Figure 2

0 to 100% White)

Figure 1 Figure 2

Figure 4 Figure 3

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Figure 5

Figure 6 Figure 5

Figure 8 Figure 7

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5.B. BIOS update procedure

I. For ViewSonic

BIOS Update User Guide

BIOS Update Flow for Genesis

1.1 Program：

1. 1. 1. Software
a. Please download the file “ Genesis” from CMO E-Sir system. There are ISP & BIOS two
files, kindly see as below.
a) ISPACK.EXE: Main program

b) Ancillary .ISPACK.EXE ：Description program

1.1. 2.Hardware

•RS232 cable（9 Pin）

•D_Sub cable（15Pin）

GProbe4.2.0.3.exe

GProbe4.2.0.3_gm5126.exe

•12V Power supply

•RS232 to D_Sub transfer BD

PC optional

12V

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1.1.3 Join R232, monitor cable, and adapter. Detail, see the example picture as below.

Connect PC

Connect to adapter +12v

VGA

Cable

Connect monitor

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1.2 Installation：
A. Please install the programs respectively as below.

GProbe4.2.0.3.exe

Before Setup produce GProbe 4 file . Please set at ISP & BIOS software file.
B. I S & BIOS software file to be about to produce the next. (If the file existence already, needn’t to

ISP.GProbe

repeat.) This system is applied to Win 95/98/NT/2000.

1.3 ISP Executi on

Gprobe.exe

:ISP exe. Main program

GProbe4.2.0.3_gm5126.exe

: Drive write file.

Pre.txt

Readme.txt

5126bc14.dev

Please copy all the files above to the same directory

: Drive read file.

: Ancillary file.

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