ViewSonic VS10090 Service Manual

Model No. VS10090

15” Color TFT LCD Display

Service Manual

ViewSonic VX510-1

ViewSonic



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

(VX510_SM_833 Rev. 1a May 2004)

Copyright

Copyright

¤

2004 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

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

Optiquest is a registered trademark of ViewSonic Corporation.

Revision History

Revision Date Description Of Changes Approval

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1a 05/27/04 Initial Release DCN-4473 Angela Lu

TABLE OF CONTENTS

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

6. Trouble Shooting Flow Chart

9. Block Diagram

10. Schematic Diagrams

7. Recommended Spare Parts List

1. Precautions and Safety Notices

5. Adjusting Procedure

8. Exploded Diagram And Spare Parts List

11. PCB Layout Diagrams

1

4

10
16

17

28
32

35
38
39

46

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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 high quality and safety approved AC/DC power cord.
(5) Disconnect the power plug from AC outlet if the product is not 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 susceptible to excessive dust and dirt.

- Near any appliance generating a strong magnetic field.

- Place 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 inserting or disconnecting from input connector.
(3) Wipe off water drop 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 insure human earth when handling.
(7) Do not open nor modify the Module Assembly.
(8) Do not press the reflector sheet at the back of the module to any directions.
(9) In case if a Module has to be put back into the packing container slot after once it was taken out from 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 nor tilt the Interface

Connector of the TFT Module.

1. Precautions and Safety Notices

(11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist nor

bend the TFT Module even momentary. At designing the enclosure, it should be taken into consideration that

no bending/twisting forces are applied to the TFT Module from outside. Otherwise the TFT Module may be

damaged.

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

regulations for disposal.

(13) Small amount of materials having no flammability grade is used in the LCD module. The LCD module should

be supplied by power complied with requirements of Limited Power Source (IEC60950 or UL1950), or be

applied exemption.

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

UL1950). Do not connect the CFL in Hazardous Voltage Circuit.

4-2 Handling 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
polarizer.

Surface of the LCD panel is pressed by fingers. That may
cause “mura”.

Take out the monitor with cushions. Take out the monitor by grasping the LCD panel. That may

cause “mura”.

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Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects. That may scratch

the surface of the panel, or cause “mura”.

The panel is placed face-down on the lap. That may cause

“mura”.

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GENERAL REQUIREMENTS

2-1. GENERAL SPECIFICATION

Test Resolution & Frequency 1024x768 @ 60Hz
Test Image Size Full Size

Contrast and Brightness Controls

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

2-2. VIDEO INTERFACE

Analog Input Connector DB-15 (Analog),
Digital Input Connector DVI-D (Digital) :N/A
Default Input Connector Defaults to the first detected input
Video Cable Connector DB-15 Pin out Compliant DDC 1/2B

Video Signals

1.Video RGB (Analog) Separate, Composite, and

Sync on Green
Video Impedance 75 Ohms (Analog)
Exclusions Not compatible with interlaced video

2-3. POWER SUPPLY

Internal Power Supply Part Number: DIAPAR002D22
Input Voltage Range 90 to 264 VAC
Input Frequency Range 47.5 to 63 Hertz
Short Circuit Protection Output can be shorted without damage
Over Current Protection 8 A typical at 5 VDC
Leakage Current 0.7mA (Max) at 254VAC / 60Hz
Efficiency 75% typical at 115VAC Full Load
Fuse Internal and not user replaceable
Power Dissipation 18.5Watts (typ),30Watts(Max.)

2-4. ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency 30 – 60 KHz
Vertical Refresh Rate 50 – 75Hz.
Maximum Pixel Clock 80 MHz
Primary Preset 1024x768 @ 60Hz

Timing Table

Timing -- Analog --

Item Resolution

1 640 x 350 @ 70Hz, 31.5kHz
2 640 x 400 @ 70Hz, 31.5kHz
3 640 x 480 @ 60Hz, 31.5kHz

2. Specification

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5 640 x 480 @ 72Hz, 37.9kHz
6 640 x 480 @ 75Hz, 37.5kHz
7 640 x 480 @ 85Hz, 43.27kHz
8 720 x 400 @ 70Hz, 31.5kHz
9 800 x 600 @ 56Hz, 35.1kHz

10 800 x 600 @ 60Hz, 37.9kHz

11 800 x 600 @ 75Hz, 46.9kHz
12 800 x 600 @ 72Hz, 48.1kHz
13 800 x 600 @ 85Hz, 53.7kHz
14 832 x 624 @ 75Hz, 49.7kHz
15 1024 x 768 @ 60Hz, 48.4kHz
16 1024 x 768 @ 70Hz, 56.5kHz
17 1024 x 768 @ 72Hz, 58.1kHz
18 1024 x 768 @ 75Hz, 60.0kHz
19 1024 x 768 @ 85Hz, 68.67kHz

Remark: Fv: 76Hz ~ 85Hz can be supported, not guarantee.

Changing Modes

Maximum Mode Change Blank Time for image
stability Note:

1.

2.

3.

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

Under 5 seconds (Max),
1 seconds (Typ.),for recognized timings
1-2 seconds(Typ.),for under-recognized
timings

2-5. LCD Panel
Panel Characteristics

Panel T ype HANNSTAR HSD150SX84-G
Type Color TFT Active Matrix XGA LCD
Active Size 304.1 (H) x 228.1 (V)
Pixel Arrangement RGB V ertical Stripe
Pixel Pitch 0.297 mm(H) x 0.297mm (V)
Glass Treatment Anti Glare (Hard coating 3H)
# of Backlights 2 CCFL edge-light (1 top / 1 bottom)
Backlight Life 40,000Hours (Typ) / 30,000 Hours (Min)

Luminance Condition:
CT = 6500K, Contrast = Max,
Brightness = Max

250 cd/m2 (Typ after 30 minute warm up)
200 cd/m2 (Min after 30 minute warm up)

Brightness Uniformity

△L5=Max 1.3 △L5 = Maximum Luminance /
Minimum Luminance

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4 640 x 480 @ 67Hz, 35.0kHz

Contrast Ratio 450:1 (Typ), 300:1 (Min)
Color Depth 262, 144 colors (6 bit panel)
Viewing Angle (Horizontal) 120 deg @ CR>10, 150 deg @ CR>5
Viewing Angle (Vertical) 100 deg @ CR>10, 115 deg @ CR>5
Response Time
10%-90% @ Ta=25°C

25 ms (Tr +Tf ) (Typ)
35 ms (Tr +Tf ) (Max)

2-6. MECHANICAL
Dimension (Desktop)

Width 353.69 mm
Height 387.69 mm
Depth 169.51 mm
Depth (Head only) 59.5mm
Monitor Weight 3.4 kg / 7.5 lbs

Ergonomics

20 DEGREES MINIMUM Tilt Up
5 degrees Tilt Down

Package Specifications

Width 417 mm
Height 480 mm
Depth 223 mm
Cross Weight 5.1 kg / 11.2 lbs

2-7. ENVIRONMENTAL

Environmental

Operating Temperature 0°C to +40°C
Storage Temperature -20°C to +60°C
Operating Relative Humidity 10% to 80% RH Non-Condensing

Storage Relative Humidity 10% to 90% RH Non-Condensing
Operating Altitude 0 to +3,000 meters
Storage Altitude 0 to +12,000 meters

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2-8 Analog EDID

Time: 08:46:29
Date: Fri Nov 14, 2003
______________________________________________________________________
______________________________________________________________________
VIEWSONIC CORPORATION

EDID Version # 1, Revision # 3

DDCTest For: ViewSonic VX510
______________________________________________________________________
______________________________________________________________________
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 | 19 64 01 01 01 01 01 0D 01 03
20 | 0E 1E 17 78 2A 71 D6 A2 56 49
30 | 96 24 13 4F 54 BF EE 00 01 01
40 | 01 01 01 01 01 01 01 01 01 01
50 | 01 01 01 01 64 19 00 40 41 00
60 | 26 30 18 88 36 00 30 E4 10 00
70 | 00 18 00 00 00 FF 00 50 33 30
80 | 30 33 30 31 30 30 30 30 31 0A
90 | 00 00 00 FD 00 32 50 1E 3C 08

100 | 00 0A 20 20 20 20 20 20 00 00
110 | 00 FC 00 56 58 35 31 30 0A 20
120 | 20 20 20 20 20 20 00 70

______________________________________________________________________
(08-09) ID Manufacturer Name = VSC
(11-10) Product ID Code = 6419
(12-15) Last 5 Digits of Serial Number = Not Used
(16) Week of Manufacture = 01
(17) Year of Manufacture = 2003
(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

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(21) Maximum Horizontal Image Size = 300 mm

(22) Maximum Vertical Image Size = 230 mm

(23) Display Gamma = 2.20

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

Active Off/Very Low Power, Preferred Timing Mode

Display Type = R/G/B Color

(25-34) CHROMA INFO:

Red X - 0.634 Green X - 0.285 Blue X - 0.144 White X - 0.310

Red Y - 0.339 Green Y - 0.587 Blue Y - 0.075 White Y - 0.330

(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)

(37) Manufacturer's Reserved Timing:

None Specified

(38-53) Standard Timing Identification:

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

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______________________________________________________________________
(54-71) Detailed Timing / Descriptor Block 1:
1024x768 Pixel Clock: 65.00 MHz
______________________________________________________________________
Horizontal Image Size: 304 mm Vertical Image Size: 228 mm
Refreshed Mode: Non-Interlaced Normal Display - No Stereo
Horizontal:
Active Time: 1024 pixels Blanking Time: 320 pixels
Sync Offset: 24 pixels Sync Pulse Width: 136 pixels
Border: 0 pixels Frequency: 48.36 KHz
Vertical:
Active Time: 768 lines Blanking Time: 38 lines
Sync Offset: 3 lines Sync Pulse Width: 6 lines
Border: 0 lines Frequency: 60.00 Hz
Digital Separate, Horizontal Polarity (-) Vertical Polarity (-)
______________________________________________________________________
(72-89) Detailed Timing / Descriptor Block 2:

Monitor Serial Number:
P30030100001
______________________________________________________________________
(90-107) Detailed Timing / Descriptor Block 3:
Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 80 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 60 KHz
Pixel Clock - 80 MHz
Secondary GTF - Not Supported
______________________________________________________________________
(108-125) Detailed Timing / Descriptor Block 4:
Monitor Name: VX510
(126) No Extension EDID Block(s)
(127) CheckSum OK

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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” on page 9.

Front Control Panel
shown below in detail

Main Menu
With OnView controls

Scrolls through menu options and
adjusts the displayed control.

Also a shortcut to display the
Contrast adjustment control
screen.

Power
On/Off

Displays the control
screen for the highlighted
control.

Also toggles between two
controls on some
screens.

Power light
Green = ON
Orange = Power

Saving

Displays the Main Menu
or exits the control screen
and saves adjustments

1

2

3. Front Panel Function Control Description

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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 30 seconds.

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.

4

To adjust the control, 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 your computer's graphic card so that it outputs a video signal 1024 x
768 @ 60 Hz 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.)

The line at the
bottom of the
screen tells you
what you can do
next: Exit or select
the Brightness
control.

1: Exit 2 : Brightness

Contrast

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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

automatically sizes, centers, and fine tunes

the video signal to eliminate waviness and distortion.
Press the [2] button to obtain a sharper image.

If this function does not work on your LCD display, then

lower the video refresh rate to 60 Hz and set the resolution

to its

Contrast

adjusts the difference between the image background

(black level) and the foreground (white level).

Brightness

adjusts background black level of the screen image.

pre-set value.

functions are not available for DVI input.

NOTE:

1. Auto Image Adjust works with most common video cards.

2. The Auto Image Adjust and most Manual Image Adjust

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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.

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 ▲ or ▼.

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.

Control Explanation

SRGB

9300K
6500K
5400K
User Color

Color Adjust

sRGB

— sRGB 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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