ViewSonic VLCDS23722-1W Manuale utente

Service Manual

ViewSonic VE500-1

Model No. VLCDS23722-1W

(VE500-1_SM_526 - Rev. 1a – August 2002)

15” Color TFT LCD Display

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

ViewSonic Corporation ii

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.

Revision History

Revision Date Description Of Changes Approval

1a 8/28/02 Initial Reversion DCN-2208 K.Yang

Confidential – Do Not Copy VE500-1

1b11//05/02 Revise DCN-2208 C .Shen

TABLE OF CONTENTS

1. PRECAUTIONS AND NOTICES...............................................................................1

2. SPECIFICATIONS ....................................................................................................2

3. LOCATION OF CONTROLS.....................................................................................3

5.INTERNAL CONNECTOR PIN DEFINITION ............................................................5

6.BLOCK DIAGRAM....................................................................................................9

7.TROUBLE SHOOTING FLOW CHART.............................................................11

8.SPARE PARTS LIST ..............................................................................................15

9.EXPLODED DIAGRAM AND SPARE PARTS LIST...............................................18

Confidential – Do Not Copy VE500-1

ViewSonic Corporation iii

4.ADJUSTING PROCEDURE......................................................................................4

10.SCHEMATIC DIAGRAMS.......................................................................................19

11.PCB LAYOUT DIAGRAM.......................................................................................25

ViewSonic Corporation 1

1. PRECAUTIONS AND NOTICES

Prior to using this manual, please ensure that you have carefully followed all the procedures

outlined in the user manual for this product.

zRead all of these instructions.

zSave these instructions for later use.

zFollow all warnings and instructions marked on the product.

zDo not use this product near water.

zThis display should be installed on a solid horizontal base.

zWhen cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray

with liquid or aerosol cleaners.

zDo not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet

and other parts.

zAdequate ventilation must be maintained to ensure reliable and continued operation and to

protect the display from overheating. Do not block ventilation slots and openings with objects or

install the display in a place where ventilation may be hindered.

zDo not install this display near a motor or transformer where strong magnetism is generated.

Images on the display will become distorted and the color irregular.

zDo not allow metal pieces or objects of any kind fall into the display from ventilation holes.

Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable

operation of the product and to protect it from overheating, those openings muse not be blocked or

covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other

similar surface. This product should never be placed near or over a radiator or heat register. This

product should not be placed in a built-in installation unless proper ventilation is provided.

Confidential – Do Not Copy VE500-1

ViewSonic Corporation 2

2. SPECIFICATIONS

LCD panel type 15.0” TFT (15.0” Diagonal)

Displayable resolution XGA 1024 x 768 maximum

Pixel dimension 0.297 mm horizontal x 0.297 mm vertical

LCD display color 16.7M Colors Max.

OSD control AUTO CONFIG, BRIGHTNSS,

CONTRAST, COLOR (R, G, B, BLACK LEVEL ADJUST),

POSITION(H-POSITION, V-POSITION ),IMAGE (PHASE, CLOCK ),

MISC MENU (RESET,OSD POSITION, SYSTEM INFO )

Manual control buttons MENU, Select, Adjust(,), Power.

Viewing angle Horizontal: r60 , Vertical: -60~+40.

Tilt +20q, -5q.

Contrast ratio 350:1 (typ)

Brightness 250cd/m2(typ)

Response time 30ms (typ) tr+tf

Active display area 304.1 mm (H) x228.1mm (V)

AC/DC adapter Input: AC 100 ~ 240V, 50 ~ 60 Hz

Output: +12 V DC.

Input signal Video: Analog 0.7 Vp-p. 75 ohms

Sync. : TTL Level, Positive/ Negative, Separate Sync.

Input connector 15 Pin D-Sub.

Power management <2W in Active Off mode

Specification

Dimensions ( W x H x D ) 38.5 cm x 35.3 cm x 16.5 cm.

Weight 1850 kgs. (LCD Module only)

4.7kgs. (unit)

Accessory VGA cable, AC/DC adapter, power cord.

Temperature Operation : 0 ~ 40°C

Storage : -10 ~ 60°C

Confidential – Do Not Copy VE500-1

ViewSonic Corporation 3

3. LOCATION OF CONTROLS

1) MENU:

Enter to the OSD adjustment menu. It also used for go back to previous menu for sub-menu, and the

change data doesn’t be savedto memory.

2) SELECT:

To confirm the current selection. It also used for go back to previous menu for sub-menu, and the

change data will be savedto memory.

3) ADJUST : ( RIGHT )

To scroll up in sub menu or to increase value of selected item.

If pressed when menu is not active, BRIGHTNESS is adjusted.

4) ADJUST : ( LEFT )

To scroll down in sub menu or to decrease value of selected item

If pressed when menu is not active, AUTO CONFIG is adjusted.

5) POWER SWITCH

Press the power switch to turn the monitor on. Press it again to turn the monitor off.

6) POWER INDICATOR

The LED will light with green color in normal on state, and will

light with orange color in power saving mode.

Adjust ϰAdjust ϧSelect LED Power

Confidential – Do Not Copy VE500-1

1. As shown on Fig 1. Power off the monitor and unplug the DC cable. ʳʳ ʳ ʳ

2. As shown on Fig. 2 and Fig. 3. Press [2] key then plug DC cable at the same time. ʳʳ

3. As shown on Fig. 4, Fig. 5 and Fig. 6. The screen will show "Auto image " out after the LED light is changed to Green

4. As shown on Fig. 6. The All Reset procedure is finished after "Auto image Adjust" message disappears. ʳ

ʳʳ ʳʳʳ ʳʳʳ ʳ

ʳʳʳ ʳ

ʳʳ

ʳFig.1 Fig. 2 Fig. 3

ʳʳʳ ʳ

ʳFig. 4 ʳʳʳ Fig. 5 ʳFig. 6 ʳ

ʳʳʳ ʳ

ʳFig.7 ʳʳ

4. ADJUSTING PROCEDURE

ViewSonic Corporation 4Confidential – Do Not Copy VE500-1

5.INTERNAL CONNECTOR PIN DEFINITION

XGA I/F BOARD (DPWBN5396T8----)

J2: Key Switch for OSD Adjustment, Power Switch and Brightness Control

Input Terminal

Connector P/N: VCNCP0906REJST-

Pin No. Symbol Function

1 UP S2 For OSD Adjustment

2 MENU AN

S1 For OSD Adjustment

3 LED-RED

4 LED-GRN

5 SOFT-START

6 GND

JP6: Output Terminal for Inverter Unit

Connector P/N: VCNCP0905REJST-

Pin No. Symbol Function

1 BKLT_ON Supply Voltage for Inverter unit (DC +5V)

2 BKLT_ON Supply Voltage for Inverter unit (DC +5V)

3 VCONT Voltage for Adjusting Backlight Brightness

4 GND

5Vin Su

Volta

e for Inverter unit

(

DC +12

)

XGA I/F BOARD (DPWBN5396T8----)

J1: Signal Input Terminals

Connector P/N: QCNCD1175T8----

Pin No. Symbol Function

1 RED RED Video Input Signal

2 GREEN GREEN Video Input Signal

3 BLUE BLUE Video Input Signal

4NC

5 RETURN GND

6 RED RETURN GND for RED video signal

7 GREEN RETURN GND for GREEN video signal

8 BLUE RETURN GND for BLUE video signal

95V

10 SYNC. RETURN GND for Sync. signal

11 NC

12 DDC data

13 H SYNC. Horizontal Sync. Signal

14 V SYNC. Vertical Sync. Signal

15 DDC clock

ViewSonic Corporation 5Confidential – Do Not Copy VE500-1

CN3: Output Terminal for Connector board(DPWBN5349T8----)

Connector P/N:

Pin No. S

mbol Function

1 GND

2 RB2 RED Data Signal of Even Pixels

3 RB3 RED Data Signal of Even Pixels

4 RB4 RED Data Signal of Even Pixels

5 RB5 RED Data Signal of Even Pixels

6 RB6 RED Data Signal of Even Pixels

7 RB7 RED Data Signal of Even Pixels

8 GB2 GREEN Data Signal of Even Pixels

9 GB3 GREEN Data Signal of Even Pixels

10 GB4 GREEN Data Signal of Even Pixels

11 GB5 GREEN Data Signal of Even Pixels

12 GB6 GREEN Data Signal of Even Pixels

13 GB7 GREEN Data Signal of Even Pixels

14 BB2 BLUE Data Signal of Even Pixels

15 BB3 BLUE Data Signal of Even Pixels

16 BB4 BLUE Data Signal of Even Pixels

17 BB5 BLUE Data Signal of Even Pixels

18 BB6 BLUE Data Signal of Even Pixels

19 BB7 BLUE Data Si

nal of Even Pixels

ViewSonic Corporation 6Confidential – Do Not Copy VE500-1

Pin No. Symbol Function

20 GND

21 RA2 RED Data Signal of Odd Pixels

22 RA3 RED Data Signal of Odd Pixels

23 RA4 RED Data Signal of Odd Pixels

24 RA5 RED Data Signal of Odd Pixels

25 RA6 RED Data Signal of Odd Pixels

26 RA7 RED Data Signal of Odd Pixels

27 GA2 GREEN Data Signal of Odd Pixels

28 GA3 GREEN Data Signal of Odd Pixels

29 GA4 GREEN Data Signal of Odd Pixels

30 GA5 GREEN Data Signal of Odd Pixels

31 GA6 GREEN Data Signal of Odd Pixels

32 GA7 GREEN Data Signal of Odd Pixels

33 BA2 BLUE Data Signal of Odd Pixels

34 BA3 BLUE Data Signal of Odd Pixels

35 BA4 BLUE Data Signal of Odd Pixels

36 BA5 BLUE Data Signal of Odd Pixels

37 BA6 BLUE Data Signal of Odd Pixels

38 BA7 BLUE Data Signal of Odd Pixels

39 GND

40 DE Data Enable Signal

41 Vsync Vertical Sync. Signal

42 Hsync Horizontal Sync. Signal

43 GND

44 PCLK Clock Signal for Sampling Pixels Data Signals

45 PCLK Clock Signal for Sampling Pixels Data Signals

46 GND

47 VCC DC +5V Power Supply ( for LCD )

48 VCC DC +5V Power Supply ( for LCD )

49 VCC DC +5V Power Supply ( for LCD )

50 VCC DC +5V Power Su

for LCD

)

SW board (DPWBN5403T8----)

CN3 :Output Terminal for OSD, Power and Brightness control.

Used connector: VCNCP0906REJST-

Pin No. Symbol Function

1 UP S2 For OSD Adjustment

2 MENU AND DOWN S1 For OSD Adjustment

3 LED-RED

4 LED-GRN

5 SOFT-START

6 GND

ViewSonic Corporation 7Confidential – Do Not Copy VE500-1

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