ViewSonic VP231wb,VS10092 Service manual

Service Manual

ViewSonic VP231wb

Model No. VS10092

23” Color TFT LCD Display

ViewSonic

(VP231wb_SM_942 Rev. 1a Nov. 2004)



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

Copyright

Copyright
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.

2004 by ViewSonic Corporation. All rights reserved. No part of this publication may be

¤

DCN Number ECR Number

1a

11/24/04

Revision History

Documents Number

4872

Description of Changes EditorRevision SM Editing Date

Initial Release

K. Jeng

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VP231wb

TABLE OF CONTENTS

1. Precautions and Safety Notices

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

5. Adjusting Procedure

6. Trouble Shooting 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

14
20

19

33
36

50
56
57

63

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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 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.

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(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.

(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.

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2. Specification

(A). General specification:

1. General specification:

LCD panel suppliers:

LCD panel specification:

Input signals: a. Analog R / G / B (0.7Vp-p/75 ohm) Positive.

Input connector: a. Analog D-sub 15pin x 1.

Output connector: a. USB down stream x 4.

Display data channel: DDC2B.

Signal frequency range: a. Horizontal:

Resolution: 1920x1200. (WUXGA)

Power supply: AC Input Range: AC 90 to 264V, 50/60Hz ± 3Hz, 3.0A.

Power Consumption:

PIP/PBP mode Sub screen can’t over 110MHz (1280x1024 64K/60Hz) in PIP/PBP mode

LG: LM230W02-A2.

a. Panel size: 23.0-inch (viewable).

b. Driver element: a - Si TFT active matrix.

c. Effective display area: 495.36 (H) X 309.6 (V) mm.

d. Pixel pitch: 0.258 (H) X 0.258 (V) mm.

e. Max. resolution: WUXGA (1920X1200 pixel).

f. Display color: 16.7M colors (R, G, B 8-bit data).

g. Response time: Tr 8.5ms / Tf 7.5ms. (Typical)

h. Color filter arrangement: R / G / B vertical stripe.

i. Black light: 12-CCFLs.

j. Contrast ratio: 350 (min), 500 (typical)

k. Luminance: 200 cd/m2 (min), 250 cd/m2 (typical).

l. Luminance variation: 1.3 (MAX.). (Note.1)

o

m. Viewing angle (CR >10): Horizontal: 176

, Vertical: 176o.

b. Digital R /G / B DVI rev. 1.0 (TMDS single link)

c. H & V separate Sync: TTL level; Polarity: Positive or Negative.

d. H & V composite Sync: TTL level; Polarity: Positive or Negative.

e. SOG (Sync level 0.3Vp-p).

b. Digital DVI-I 29 pin x 1. (Analog + Digital)

c. USB up stream x1.

a-1. Analog: 30KHz ~ 92KHz.

a-2. Digital: 30KHz ~ 92KHz.

1

b. Vertical: 24Hz ~ 85

1

Note: *

The maximum timing is 1920x1200 @60Hz reduce blanking timing.

*

Hz.

c. Pixel clock:

c-1. Analog: 165MHz.

c-2. Digital: 165MHz.

d. Non-interlaced.

Less then 50Ap. For 115VAC. Inrush current

Less then 100Ap. For 230V

AC

.

Less then 120W. On mode.

Less then 4W. Active off mode.

Less then 4W. DC power off.

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2. Physical specification.

Overall dimension:

a. Height: 484mm.

b. Width: 542mm.

c. Depth: 267mm.

a. Net weight: 9kg. Weight:

b. Gross weight: 14kg.

Mechanical adjustment:

a. Tilt: +25o ~ -5o.

b. Swivel:

c. Height adjust: 110mm.

d. Pivot: 90

Packaging: a. Carton dimension:

Accessories: Power cable 1.8m.

User guide.

CD ROM.

HD15 - HD15 cable.

DVI (D) – DVI (D) cable.

45o.

±

o

.

a. Height: 524mm.

b. Width: 656mm.

c. Depth: 381mm.

3. Regulatory & Standard certification.

Regulatory standards

UL, cUL, FCC-B, CB, CE, ENERGY, NOM, TUV/GS, TUV ERGO (covers

ISO13406-2 & MPRII), TCO99 (for VP231wb),

TUV-S,

Note.1:

Luminance variation:

50%90%

10%

L = 495.36mm / W = 309.6mm

FIG.1 Luminance test point.

BSMI, CCC, (PSB), (C-TICK),

GOST-R + 20 ORIGINAL COPIES HYGIENIC, (SASO), PCBC, VCCI

B

.

10%

BU = 1.3

MAX

B

MIN

.

50%

90%

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(B). Analog and Digital timing chart.

Mode No. 1 2 3 4 5 6 7 8 9

TEXT

Mode Name

Horizontal Freq. 31.468 31.468 31.469 35.000 37.861 37.500 43.269 31.469

Video clock Freq. 25.175 25.175 25.175 30.240 31.500 31.500 36.000 28.322 36.000

Sync. Polarity

H. total (Dots) 800 800 800 864 832 840 832 900 1024

H. sync. (Dots) 96 96 96 64 40 64 56 108 72

H. back porch (Dots) 48 48 48 96 128 120 80 54 128

H. active (Dots) 640 640 640 640 640 640 640 720 800

H. front porch (Dots) 16 16 16 64 24 16 56 18 24

Vertical Freq. (Hz) 70.087 70.087 59.940 66.667 72.809 75.000 85.008 70.087 56.250

Sync. Polarity

V. total (Lines) 449 449 525 525 520 500 509 449 625

V. sync. (Lines) 2 2 2 3 3 3 3 2 2

V. back porch (Lines) 60 35 33 39 28 16 25 35 22

V. active (Lines) 350 400 480 480 480 480 480 400 600

V. front porch (Lines) 37 12 10 3 9 1 1 12 1

640 x

350

＋

－ ＋ － － － － － ＋ ＋

VGA

640 x

400

－

VESA

640 x

480

－

MAC

640 x

480

－

VESA

640 x

480

－

VESA

640 x

480

－

VESA

640 x

480

－

TEXT

720 x

400

－

VESA

800 x

600

35.156

＋

Mode No.

Mode Name

Horizontal Freq. (KHz) 37.879 48.077 46.875 53.674

Video clock Freq. 40.000 50.000 49.500 56.250 57.285 65.000 75.000 78.084 78.750 94.500

Sync. Polarity

H. total (Dots) 1056 1040 1056 1048 1152 1344 1328 1344 1312 1376

H. sync. (Dots) 128 120 80 64 64 136 136 136 96 96

H. back porch (Dots) 88 64 160 152 224 160 144 160 176 208

H. active (Dots) 800 800 800 800 832 1024 1024 1024 1024 1024

H. front porch (Dots) 40 56 16 32 32 24 24 24 16 48

Vertical Freq. (Hz) 60.317 72.188 75.000 85.061 74.553 60.004 70.069 72.082 75.029 84.997

Sync. Polarity

V. total (Lines) 628 666 625 631 667 807 806 806 800 808

V. sync. (Lines) 4 6 3 3 3 6 6 6 3 3

V. back porch (Lines) 23 23 21 27 37 29 29 29 28 38

V. active (Lines) 600 600 600 600 624 768 768 768 768 768

V. front porch (Lines) 1 37 1 1 3 3 3 3 1 1

10 11 12 13 14 15 16 17 18 19

VESA

800 x

600

VESA

800 x

600

＋

＋ ＋ ＋ ＋ － － － － ＋ ＋

＋

VESA

800 x

600

＋

VESA

800 x

600

＋

MAC

832 x

624

49.727

－

VESA

1024 x

768

48.363

－

VESA

1024 x

768

56.476 58.099

－

XGA

1024 x

768

－

VESA

1024 x

60.023 68.677

768

＋

VESA

1024 x

768

＋

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Mode No.

Mode Name

Horizontal Freq. (KHz) 68.681 60.000 75.231 63.981 79.976 91.146

Video clock Freq. 100.00 108.00 130.00 108.00 135.00 157.50 74.250 162.00 154.00 74.25

Sync. Polarity

H. total (Dots) 1456 1800 1728 1688 1688 1728 1650 2160 2080 2200

H. sync. (Dots) 128 112 136 112 144 160 40 192 32 44

H. back porch (Dots) 144 312 224 248 248 224 270 304 80 192

H. active (Dots) 1152 1280 1280 1280 1280 1280 1280 1600 1920 1920

H. front porch (Dots) 32 96 88 48 16 64 60 64 48

Vertical Freq. (Hz) 75.062 60.000 74.857 60.020 75.025 85.024 60.000 60.000 59.950 30.00

Sync. Polarity

V. total (Lines) 915 1000 1005 1066 1066 1072 750 1250 1235 562.5

V. sync. (Lines) 3 3 4 3 3 3 5 3 6 5

V. back porch (Lines) 39 36 38 38 38 44 20 46 26 15

V. active (Lines) 870 960 960 1024 1024 1024 720 1200 1200 1080

V. front porch (Lines) 3 3 1 1 1 5 1 3

20 21 22 23 24 25 26 27 28 29

APPLE

1152x

870

－

－

VESA

1280 x

960

＋

＋

VESA

1280 x

960

－

＋

VESA

1280 x

1024

＋

＋

VESA

1280 x

1024

＋

＋

VESA

1280 x

1024

＋

＋

HDTV

1280 x

720

45.000

－

－

VESA

1600 x

1200

75.000 74.038

＋

＋

VESA

1920 x

1200

＋

－

1080i

1920X

540

33.75

－

－

Appendix B: EEPROM contents.

a. IC954 128 bytes EEPROM of VSC USB Vendor ID.

0 1 2 3 4 5 6 7 8 9

0 05 43 11 69 0E 00 18 00 0A 00

10 31 80 FF FF FF FF FF FF FF FF

20 FF FF FF FF FF FF FF FF FF FF

30 FF FF FF FF FF FF FF FF FF FF

40 FF FF FF FF FF FF FF FF FF FF

50 FF FF FF FF FF FF FF FF FF FF

60 FF FF FF FF FF FF FF FF FF FF

70 FF FF FF FF FF FF FF FF FF FF

80 FF FF FF FF FF FF FF FF FF FF

90 FF FF FF FF FF FF FF FF FF FF

100 FF FF FF FF FF FF FF FF FF FF

110 FF FF FF FF FF FF FF FF FF FF

120 FF FF FF FF FF FF FF FF

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b. 128 bytes of ED ID code for VP231wb analog.

0 1 2 3 4 5 6 7 8 9

0 00 FF FF FF FF FF FF 00 5A 63

10 19 69 01 01 01 01 01 0E 01 03

20 0E 32 1F 78 2E CF B1 A3 55 49

30 99 25 10 50 54 BF EF F0 D1 00

40 A9 40 81 80 81 40 71 4F 61 59

50 45 59 31 59 28 3C 80 A0 70 B0

60 23 40 30 20 36 00 EF 36 11 00

70 00 1A 00 00 00 FF 00 50 33 32

80 30 34 30 31 30 30 30 30 31 0A

90 00 00 00 FD 00 18 55 1E 5C 11

100 00 0A 20 20 20 20 20 20 00 00

110 00 FC 00 56 50 32 33 31 77 62

120 0A 20 20 20 20 20 00 F1

c. 128 bytes of EDID code for VP231wb digital.

0 1 2 3 4 5 6 7 8 9

0 00 FF FF FF FF FF FF 00 5A 63

10 19 69 01 01 01 01 01 0E 01 03

20 80 32 1F 78 2E CF B1 A3 55 49

30 99 25 10 50 54 BF EF F0 D1 00

40 A9 40 81 80 81 40 71 4F 61 59

50 45 59 31 0A 28 3C 80 A0 70 B0

60 23 40 30 20 36 00 EF 36 11 00

70 00 1A 00 00 00 FF 00 50 33 32

80 30 34 30 31 30 30 30 30 31 0A

90 00 00 00 FD 00 18 55 1E 5C 11

100 00 0A 20 20 20 20 20 20 00 00

110 00 FC 00 56 50 32 33 31 77 62

120 0A 20 20 20 20 20 00 CE

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3. Front Panel Functi on Control Descr iption

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 pages 9.

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Do the following to adjust the screen image：

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

NOTE：

2. To select a control you want to adjust, press

3. After the control is selected, press button [2].

4. To adjust the control, press the up

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

All OnView menus and adjustment screens disappear automatically after about 30 seconds.

▲ or ▼ to scroll up or down the Main Menu.

▲ or down ▼ buttons.

twice.

The following tips may help you optimize your display：

Adjust your computer’s graphic card so that it outputs a video signal 1920x1200@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 ▲ 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.

NOTE

LCD display, then lower the video refresh rate to 60Hz and set the resolution to its pre-set value.

Auto Image Adjust works with most common video cards. If this function does not work on your

：

Contrast adjusts the difference between the image background (black level) and the foreground

(white level).

Brightness adjusts background black level of the screen image.

Input Selec t allows you to toggle between an analog and a digital signal.

Color Adjust provides several color adjustment modes: preset color temperatures and

allows you to adjust red

6500K (6500 Kelvin).

(R)

, green

, and blue

(G)

separately. The factory setting for this product is

(B)

Audio Adjust

RGB

which

sRGB —

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 adjustment to be disabled..

sRGB is quickly becoming the industry standard for color management, with support being

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

5000K —

green to the screen image for a darker color.

Adds blue and green to the screen image for a darker color.

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Control Explanation

User Color — Individual adjustments for red (R), green (G), and blue (B).

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

2. To adjust selected color, press ▼ or ▲.

Important:

Mode, colors return to the 6500K factory preset.

Hue — adjust the video Hue level.
Saturation — increase or decrease color saturation to adjust the video saturation level.
Information displays the timing mode (video signal input) coming from the graphics card in your

computer. See your graphic card s user guide for instructions on changing the resolution and refresh rate

(vertical frequency).

Note: VESA 1920x1200@60Hz (recommended) means that the resolution is 1920x1200 and the refresh

rate is 60 Hertz.

Manual Image Adjust displays the Manual Image Adjust menu.

If you select RECALL from the Main Menu when the product is set to a Preset Timing

The Manual Image Adjust controls are explained below:

Horizontal Position moves the screen image left or right.
Vertical Position moves the screen image up or down.
Horizontal Size adjusts the width of the screen image.
Fine Tune sharpens focus by aligning the illuminated text and/or graphic characters.
Scaling adjusts the video input signal to the screen size other than 1600x1200 using the following

options.

1:1 adjusts the video signal so that the height and width of the picture are the same.
Fill all adjusts the video signal to fill the screen.
Fill Aspect Ratio maintains the correct video signal proportions for different resolutions.

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Control Explanation

PIP view two programs simultaneously by using the display’s picture-in-picture.
PIP Position allows you to move the PIP window and control screen.
PIP Size allows you to adjust the PIP window and control screen.
PIP Swap allows you to swap the main and sub window.
PBP watch two programs simultaneously by splitting the screen in half.
Zoom use to change various digital zoom modes.
Setup Menu displays the menu shown below.

The Setup Menu controls are explained below:

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

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Control Explanation

Resolution Notice displays the Resolution Notice menu shown below.

Resolution Notice advises the optimal resolution to use.
Input Priority If multiple computers will be connected to the display, this function can be used to select

which computer has priority Depending on the selected Input Priority, the display will do a one time

detection for available inputs when first powered on.

OSD Position
OSD Timeout sets the length of time an on-screen display screen is displayed. For example, with a “15

second” setting, if a control is not pushed within 15 seconds, the display screen disappears.

OSD Background
Memory Recall returns adjustments to the original factory settings if the display is operating in a

factory Preset Timing Mode listed in this user guide.

Exception:

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

allows you to turn the On-Screen-Display background on or off.

This control does not affect changes made with the User Color control.

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Special key (Hot ke y): Press follo ws key at turning on momentary.

[

]. Main Menu.

1

[2].

[UP] or [

[UP] + [

[1] + [2].

[1] + [UP] + [

[2] + [UP] + [

[1] + [

[1] + [UP]. OSD Lock / OSD Unlock (keep press 10 seconds )

DOWN

DOWN

DOWN

DC-Power
DC-Power
DC-Power
DC-Power
DC-Power
AC-Power on

] arrow. To immediately activate Contrast menu. It should be change to

] arrows. Recall Contrast or Brightness while in the Contrast or Brightness

DOWN
DOWN

]. Power Lock / Power Unlock. (keep press 10 seconds )

+ [2] + [UP]. Copy EDID to E2PROM.

+ [1]. Factory mode. (Burn in mode on)

+ [2] + [

+ [UP] + [

+ [2]. All mode recall.

. Enter ISP mode.

]. White Balance. (keep press 5 seconds)

]. Video Mirror Function

DOWN

]. Burn in mode on.

DOWN

Select next input. (Sequence: D-SUB

Brightness

OSD by push button [

adjustment,

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

Toggle 720x400 and 640x400 mode when input 720x400 or 640x400

mode.

]. Burn in mode off.

].

2

DVI-A → DVI-D)

→

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4. Circuit Descript ion

4.1 Power suppl y (DC/DC Converter):

4.1.1 IC251 BA9741 is a switching regulator controller that uses PWM method. That can be used for DC to DC

conversion for step-down. It converts a 24V DC into regulated and stable output voltage of 18V and 5V

respectively.

4.1.2 Regulator:

IC252 function is convert a 5V into regulated and stable O/P 3.3V.

IC253 function is convert a 5V into regulated and stable O/P 1.8V.

IC255 function is convert a 5V into regulated and stable O/P 3.3V.

IC256 function is convert a 5V into regulated and stable O/P 2.5V.

4.2 DDC data select:

4.2.1 IC601(AT24C02) is save D-SUB DDC data.

4.2.2 IC604(AT24C02) is save DVI-D, DDC data.

4.2.3 IC605(AT24C02) is save DVI-A, DDC data.

4.3 D-sub and DVI-A signal select

VP231wb analog source have D-sub and DVI-A signal input. User only one chose to display D-sub or DVI-A signal.

IC607(AD8186) is a R, G, B signal switch IC. If Control signal (RGBSEL) is high, LCD will display DVI-A.

If Control signal (RGBSEL) is low, LCD will display D-sub.

4.4 Scalar

The gm1601H is a dual channel graphics and video processing IC for Liquid Crystal Display (LCD) monitors and

televisions incorporating Picture in Picture, up to WUXGA output resolutions. The gm1601H provides all key IC

functions required for image capture, processing and display timing control. On-chip functions include a high speed

triple-ADC and PLL, Ultra-Reliable DVI receiver, high quality zoom, and shrink scaling engines, Motion Adaptive

De-interlacing (MADI), Low Angle Diagonal Interpolation (LADI), an on-screen display (OSD) controller, a 100MHz

on-chip X186 micro-controller (OCM), and a selectable double side TTL or dual channel LVDS transmitter for

interface to displays.

4.5 USB

IC951(USB20H04) is 4-Ports USB 2.0 Hub controller. It compliant with USB 2.0 specification. Enables bus-powered

Hi-Speed hub design. Compatible with On-The-Go (OTG) USB devices. Serial interface for configuration from

EEPROM or micro-controller when default is not used. Integrated termination and pull-up/pull-down resistors. Internal

short circuit protection of DP and DM lines. Supports individual or ganged over-current protection and power control.

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5. Adjusting Procedure

5.1 General.

1. All specification must be met over line voltage range of 90VAC to 264V

2. Operating temperature range is 0

o

C to 40oC with a relative humidity of 10% or less to 80%.

50Hz / 60Hz, unless otherwise specified.

AC

3. The monitor must be operational in a usable state within 30 minutes after turn-on.

4. All signal levels are measured assuming termination at the monitor’s input jacks or in its characteristic impedance.

5. All controls must have excess range (no control may be left at an end stop when proper alignment is completed).

6. The monitor is not required to meet specs during the following but must tolerate, without damage to the LCD or

circuits, any sequence or combination of power on and off, signal on and off, erratic, wrong frequency or noisy

inputs while at any possible unplugging of power or signal, settings of user accessible controls likewise, the monitor

should survive extended periods of operation with line voltage reduced below the specified minimum.

7. An isolation transformer should be used when performing alignment and tests, Portions of the power supply board

are hot ground, The remaining boards are cold ground.

8. Ambient condition:

8.1 Illumination: In usual inspection of electric performance and mechanical performance, it shell be 150 ~

260lux.

8.2 Environmental noise: Less than 60dB.

8.3 Interference of EMI: The inspection shall be carried out in the place where a set is not disturbed by external

unnecessary electric wave and magnetic field.

8.4 Temperature: 24 ± 2

o

C.

8.5 Humidity: 65 ± 20%.

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5.2 Instrument alignment.

5.2.1 Adjustment procedure.

Input

D-SUB

Input

640x480 / 60Hz

Chross-hatch

Into Burn-in mode

Push “Down + 2 + DC power”

3 second

Into Factory mode

“1 + DC power”

3 second

Input

640x480 / 60Hz

5-Mosaic pattern

Push “up” key into factory mode

OSD Select “Auto BI” function

Select “S-RGB, 9300K, 6500K,

5400K, 5000K to adjust” RGB

gain and “save color”

Select “Copy TODS”, “Copy

TODA”, and “Copy TODD”

Function

ISP new program (option)

Push key

1

Exit adjust OSD

ISP new program to LCD

Do initial function push

“1 + up + down + AC on/ff ”

3 second

Do “All mode recall” function

push “2 key + DC power”

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5.2.1 Dusb Video alignment.

5.2.1.1 Preset condition.

5.2.1.1.1 Setting the contrast to 70%

5.2.1.1.2 Input 640x480 / 60Hz, 5-block (5-MOSAIC) pattern (input level 100IRE 0.7Vp-p),

then press “White balance”.

SRBG/9300K / 6500K / 5400K / 5000K, R G B Gain preset as below:

R Gain 255 255 255 255 255 255 255 255 255 255

G Gain 255 255 255 255 255 255 255 255 255 255

B Gain 255 255 255 255 255 255 255 255 255 255

5.2.1.2 9300K alignment:

5.2.1.2.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.

5.2.1.2.2 Adjust R, G, and B Gain to meet following chromaticity spec:

9300K → x = 0.283 ± 0.005, y = 0.298 ± 0.005, Y > 150cd/m

5.2.1.3 6500K alignment:

5.2.1.3.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.

5.2.1.3.2 Adjust R, G and B Gain to meet following chromaticity spec:

6500°K → x = 0.313 ±0.005, y = 0.329 ± 0.005, Y > 200cd/m

5.2.1.4 5400K alignment:

5.2.1.4.1 Input 1900x1200 / 60Hz & full white pattern at 100IRE.

5.2.1.4.2 Adjust R, G, and B Gain to meet following chromaticity spec:

5400K → x = 0.335 ± 0.005, y = 0.350 ± 0.005, Y > 180cd/m

5.2.1.5 5000K alignment:

5.2.1.5.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.

5.2.1.5.2 Adjust R, G and B Gain to meet following chromaticity spec:

5000°K → x = 0.346 ±0.005, y = 0.359 ± 0.005, Y > 180cd/m

5.2.1.6 sRGB alignment

5.2.1.6.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.

5.2.1.6.2 Adjust R, G and B Gain to meet following chromaticity spec:

sRGB → x = 0.313 ±0.005, y = 0.329 ± 0.005, Y > 200cd/m

5.2.1.7 64 grays & 16 grays pattern check:

5.2.1.7.1 Input 1920x1200 / 60Hz & 64 grays pattern at 100IRE, adjust brightness 100%, and

contrast 70%.

5.2.1.7.2

9300K / 6500K / 5400K / 5000K, the 64 grays can 2 steps saturation.

5.2.1.7.3 Input 1920x1200 / 60Hz & 16 grays pattern at 100IRE, adjust brightness 100%, and

contrast 100%.

5.2.1.7.4 9300K / 6500K / 5400K / 5000K, the 16 grays saturation must be less than 4 bar.

brightness to 100%.

,

sRGB 9300K 6500K 5400K 5000K

Analog DVI Analog DVI Analog DVI Analog DVI Analog DVI

2

(Both analog & DVI).

2

(Both analog & DVI).

2

(Both analog & DVI).

2

(Both analog & DVI).

2

(Both analog & DVI).

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