ViewSonic VE510s-1,VE510b-1,VS10040 Service manual

Service Manual

ViewSonic VE510s/b-1-1

Model No. VS10040

15” Color TFT LCD Display

ViewSonic

(VE510s/b-1_SM_773 Rev. 1b Feb. 2005)



381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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.

DCN Number ECR Number

23/03/04

02/04/05

Revision History

Documents Number

221

4890

4805

Description of Changes EditorRevision SM Editing Date

Initial Release

Change Scale From MRT MVRL-HN To Realtek TTL2013 Change Panel From LG LM150X08 16/32 ms To GBM/DDL GB150XQQ3-A000 16/30ms

A. Lu

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TABLE OF CONTENTS

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjustment Procedure

6. Troubleshooting Flow Chart

7. Recommended Spare Parts List

8. Exploded Diagram and Spare Parts List

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

1 3 9

47 48 54

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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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2. Specification

SCGENERAL REQUIREMENTS

General Specifications

Test Resolution & Frequency “1024 X 768” @ 60Hz Test Image Size Full Size Contrast and Brightness Controls Factory Default: Contrast = 70%, Brightness =

100%

SIGNAL INTERFACE

Video Interface

Analog Input DB-15 (Analog) Video Cable Strain Relief Equal to twice the weight of the monitor for five

Video Cable Connector DB-15 Pinout Compliant DDC 1/2B. Video Signals Video RGB (Analog)

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 1/2B Compliant with Revision 1.3 Sync Compatibility Separate Sync Video Compatibility Shall be compatible with all PC type computers,

Resolution Compatibility 640 x 350, 640 x 480, 720 x 400 (640 x 400), 800

Exclusions Not compatible with interlaced video.

Table 3.1: 15 pin D-sub connector pin assignment

Pin Number Pin Function

1 Red video input 2 Green video input 3 Blue video input 4 No Connection 5 Ground 6 Red video ground 7 Green video ground 8 Blue video ground

9 +5V 10 Ground 11 No connection 12 (SDA) 13 Horizontal sync (Composite sync) 14 Vertical sync 15 (SCL)

minutes.

Separate

Macintosh computers, and after market video cards.

x 600, 832 x 624, 1024 x 768,

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POWER

Power Supply

Internal Power Supply Yes. 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 0.8 A typical at 265 VDC, 265 or 187VAC Leakage Current 3.5mA (Max) at 254VAC / 60Hz EFFICIENCY 65 % typical at 115VAC Full Load Fuse Internal and not user replaceable Power Dissipation 34 Watts (typ) Max Input AC Current 1.2 Arms @ 90VAC, 0.6 Arms @180VAC INRUSH CURRENT (COLD START) 60 A @ 120VAC, 80 A(max) @220VAC 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 defined to be in compliance with ISO 7779 (DIN EN27779:1991) Noise measurements of machines acoustics. Power Switch noise shall not be considered.

Power Interface US Type Power Cable Separate 3-prong NEMA 5-15P type plug. Length

= 1.8m. Color = BLACK

European Type Power Cable Schuko CEE7 -7. Length = 1.8m, Color = BLACK

Power Saving Operation Method VESA DPMS Signaling

Power Consumption

ON Mode <50 W (max) / 30 W (typ) ACTIVE OFF < 1W

Recovery Time ON Mode = N/A

ACTIVE OFF < 3 SEC

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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)

Button 1 Down arrow button Up arrow button Button 2 Power

Note: Power Button, Button 1, 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.

[DOWN] or [UP] arrow to immediately activate Contrast menu. It should be

change to Brightness OSD by push button [2].

[DOWN] + [UP] arrows recall Contrast or Brightness while in the Contrast

or Brightness adjustment, or recall both of Contrast and Brightness when the OSD is not open.

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

720x400 or 640x400 mode.

[1] + [Down] + [Up] White Balance. (Not show on user’s guide)

[1] + [Down] Power Lock

(see section “OSD Lock short cuts function for the buttons” in 5.4)

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ELECTRICAL REQUIREMENTS

Horizontal / Vertical Frequency

Horizontal Frequency 30 – 62 KHZ Vertical Refresh Rate 50 – 85 HZ. Maximum Pixel Clock 80 MHz Sync Polarity Independent of sync polarity.

Primary Presets Primary Preset “1024 X 768” @ 60Hz

Look up table timing <<Analog>>

1. 640 x 350 @ 70Hz, 31.5kHz

2. 640 x 480 @ 60Hz, 31.5kHz

3. 640 x 480 @ 67Hz, 35.0kHz

4. 640 x 480 @ 75Hz, 37.5kHz

5. 640 x 480 @ 72Hz, 37.9kHz

6. 640 x 480 @ 85Hz, 43.27kHz

7. 720 x 400 @ 70Hz, 31.5kHz

8. 800 x 600 @ 56Hz, 35.1kHz

9. 800 x 600 @ 60Hz, 37.9kHz

10. 800 x 600 @ 75Hz, 46.9kHz

11. 800 x 600 @ 72Hz, 48.1kHz

12. 800 x 600 @ 85Hz, 53.7kHz

13. 832 x 624 @ 75Hz, 49.7kHz

14. 1024 x 768 @ 60Hz, 48.4kHz

15. 1024 x 768 @ 70Hz, 56.5kHz

16. 1024 x 768 @ 72Hz, 58.1kHz

17. 1024 x 768 @ 75Hz, 60.0kHz

User Presets Number of User Presets (recognized timings)

10 presets total in FIFO configuration.

Available

Changing Modes Maximum Mode Change Blank Time, for image

stability. Note:

1) Excluding “Auto Adjust” time

3 seconds (Max) 1 seconds (Typ) for recognized timings 1-2 seconds (Typ) for unrecognized timing

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

3) The monitor needs to do “Auto Adjust” the first time a new mode is detected. Mode Change Image The image shall blank while the monitor changes

modes.

GTF GTF N/A

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LCD Panel

Panel Characteristics:

Panel Type “GBM GB150XQQ3-A001 Type TN TYPE Active Size 304.1 (H) x 228.1 (V) Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0.297 mm GLASS TREATMENT Anti Glare (Hard coating 3H) # OF BACKLIGHTS 2 CCFL edge-light (1 top / 1 bottom) BACKLIGHT LIFE 30,000 Hours (Min)

Panel Performance Luminance –

Condition:

250 cd/m2 (typ after 30 minute warmup) 200 cd/m2 (min after 30 minute warmup)

CT = 6500K, Contrast = Max, Brightness = Max Brightness Uniformity 70% Entire Area (MAX) Contrast Ratio 400:1 (typ), 300:1 (min) Color Depth 16 million colors (6 bit FRC panel) Viewing Angle (Horizontal) 120 deg @ CR>10, 140 deg @ CR>5 VIEWING ANGLE (VERTICAL) 90 deg @ CR>10, 100 deg @ CR>5 Response Time 10%-90% @ Ta=25°C

16 ms (Tr= 4ms, Tf = 12 ms) (min) 30 ms (Tr= 10 ms, Tf = 20 ms) (typ)

Panel Defects Please see Panel Quality Specifications.

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IMAGE PERFORMANCE

Factory Defaults

Contrast 70% Brightness 100% Color Temperature 6500K Sharpness 75% OSD H. Position 50% OSD V. Position 50% OSD Time Out 15 Sec OSD Background On Resolution Notice Enabled 720x400/640x400 720x400

Display Size Horizontal Display Size, Primary Preset Full Screen

Vertical Display Size, Primary Preset Full Screen

Saturation Contrast = Default

Brightness = Default TEST PATTERN = 32-GRAY Contrast = 100% Brightness = 100% Test pattern = 16-gray

No visible saturation

4-level saturation

Preset Color Temperatures Preset 1 9300K CCT(typ)=9300K

(Wx=0.283+/-0.02, Wy=0.298+/- 0.02) CCT(Max)=13100K, CCT(Min)=7300K

Preset 2 6500K (Primary) CCT(typ)=6500K

(Wx=0.313+/-0.02,Wy=0.329+/-0.02) CCT(Max)=8000K, CCT(Min)=5500K

Preset 3 CCT(typ)=5400K

(Wx=0.332+/-0.02, Wy=0.349+/-0.02) CCT(Max)=6400K, CCT(Min)=4600K

Preset Color Temperature Adjustability Each color preset shall be adjustable. Red, Green,

and Blue shall be individually controlled.

Video Cards Compatibility Peaking Performance Peaking is not adjustable.

Raster Artifacts Video Artifacts No visible streaking, sag, or smearing artifacts

when driven by the specified video cards in the primary mode and after user adjustment to best condition.

Power Supply, and Grounding Artifacts No visible artifacts in any specified video mode

within the horizontal or vertical frequency range of the monitor

Temperature Drift Image shall not drift or lose fine-tune adjustment.

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3. Front Panel Function Control Description

Main Menu With On V i ew controls

Front Control Panel shown below in detail

Displays the control screen for the highlighted control. Also toggles between two controls on some screens. Also a shortcut to auto image adjust

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

Scrolls through menu options and Power light Green = ON Orange=power

adjusts the displayed control.

Also a shortcut to display the

Contrast adjustment control screen.

Power On / Off

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Do the following to adjust the screen image:

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

Main Menu

AUTO

SET

1:EXIT 2:SELECT

Auto Adjust

Contrast/Brightness

Color Adjust

Information

Image Adjust

Setup Menu

Memory Recall

NOTE: All OnView menus and adjustment screens disappear automatically

after about 15 seconds. This time period is adjustable through the Setup menu and the OSD timeout control described on page 11.

To highlight a control you want to adjust, press I or J to scroll up or down the Main Menu.

To select the highlighted control, press button [2]. A control screen appears like the example shown below.

Contrast

1:EXIT 2: Brightness

To adjust the control, press the up I or down J buttons.

To save the adjustments and exit the menu, press button [1] twice.

The following tips may help you optimize your display:

The line at the bottom of the screen tells you what you can do next: Exit or Select the control that is highlighted.

• 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.)

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Main Menu Controls

Adjust the menu items shown below by using the up Iand down Jbuttons.

Control Explanation

Auto Adjust

automatically sizes, centers, and fine tunes the

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

NOTE

: Auto Adjust works with most common video cards. 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 pre-set value.

Contrast

adjusts the difference between the image background

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

Brightness

Color Adjust

adjusts background black level of the screen image.

provides several color options: preset color temperatures and User which allows you to adjust red (R), green (G), and blue (B). The factory setting for this product is 6500K (6500 Kelvin).

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.

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

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— Adds green to the screen image for a darker color.

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Control Explanation

User Color

and blue (B)

To select color (R, G or B) press button [2].

To adjust selected color, press ▲ or ▼.

Important

— Individual adjustments for red (R), green (G),

: 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

coming from the graphics card in your computer. See your

displays the timing mode (video signal input)

graphic card’s user guide for instructions on changing the resolution and refresh rate (vertical frequency).

VESA 1024 x 768 @ 60 Hz (recommended) means that the resolution is 1024 x 768 and the refresh rate is 60 Hertz.

Image Adjust

H./V. Position

H. Size

Fine Tune

Sharpness

1:EXIT 2:SELECT

The Image Adjust controls are explained below:

H./V. Position

adjusts horizontal and vertical position of the screen image. You can toggle between Horizontal and Vertical by pressing button [2]. Horizontal moves the screen image to the left or to the right. Vertical moves the screen image up and down.

H. Size

NOTE:

(Horizontal Size) adjusts the width of the screen image.

Vertical size is automatic with your LCD display.

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Control Explanation

Fine Tune sharpens focus by aligning the illuminated text and/

or graphic characters.

NOTE:TrytheAuto Adjust before using the Fine

Tune control.

Sharpness

adjusts the clarity and focus of the screen image.

Setup Menu displays the menu shown below.

Setup Menu

Language Select

Resolution Notifier

OSD Position

OSD

OSD Timeout

1:EXIT 2:SELECT

The Setup Menu controls are explained below.

anguage

Select allows you to choose the language used in

the menus and control screens.

Resolution Notice

For best picture quality

change the resolution to

1024 x 768

1:EXIT 2:DISABLE

OSD

OSD Position

and control screens.

OSD Timeout

screen is displayed. For example, with a “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears.

Control Explanation

Memory Recall

settings if the display is operating in a factory Preset Timing Mode listed in this user guide.

advises the optimal resolution to use.

allows you to move the on-screen display menus

sets the length of time an on-screen display

returns adjustments to the original factory

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4. Circuit Description

1. Outline

1.1 Power On/Off, 2Enter button (INPUT SELECT) , up arrow- button, down arrow button, 1MENU button,

button on the front panel.

1.2 Video signal connector and AC-IN jack are located on the back side of the cabinet.

1.3 OSD menu includes the following function;

Auto Image Adjust (only active under analog input) Contrast/Brightness Audio Adjust Color Adjust Information Manual Image Adjust Setup Menu Memory Recall

1.4 Contrast and Brightness can be directly controlled with UP / DOWN key.

2. CONNECTORS

2.1 AC inlet : CEE22 typed connector

2.2 Video signal connector for analog input: 15P Mini D-Sub

162738495

16 17

CN6

DB15HD

PIN MNEMONI 1 RV Red Video 2 GV Green Video 3 BV Blue Video 4 NC None 5 GND Ground (DDC

6 RG Red GND 7 GG Green GND 8 BG Blue GND 9 +5V +5V (for DDC) 10 SG Sync GND 11 NC None 12 SDA DDC Data 13 HS Horizontal Sync 14 VS Vertical Sync 15 SCL DDC Clock

SIGNAL

return)

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3. ELECTRICAL SPECIFICATIONS

3.1 Standard conditions

Display Area Video Signal Contrast Brightness Ambient Input Warming up Display

3.2 POWER

3.2.1 Power supply

Input Voltage 90 -240 ~Volts Power Frequency Input current

Inrush current 90A(max.) at 230Vac Power consumption 30Watt Output Voltage @0-4.8A load 12Vdc

3.2.2 Power Management

State Power Indicator

304 x 228 mm

0.7 Vpp

Max.

20 +/- 5 °C

> 30 min

1024 x 768

50/ 60 Hz +/-3Hz <1.5Arms @ 90Vac <0.75Arms@265Vac

+/-5%

On 30Watt Green

Standby <1Watt Amber

Off <1Watt

3.3 Acceptable timing

Off

If your timing is within following specification, this LCD display can automatically function with a certain

position.

Horizontal: Sync frequency : 30~82 kHz Vertical: Sync frequency : 56~75Hz

3.4 Signal level and input impedance

3.4.1 Video Signal level: 0.7 Vp-p Video signal.

3.4.2 Sync Signal level

H/V Separate : TTL level

3.4.3 Input impedance Video input : 75 ohms Sync input : > 1 k ohms

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ViewSonic VE510s-1,VE510b-1,VS10040 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual