ViewSonic VE700-1,VLCDS23724-1W,VA720-2,VLCDS23724-2W Service manual

Service Manual

ViewSonic VE700-1

VA720-2

Model No. VLCDS23724-1W

VLCDS23724-2W

17” Color TFT LCD Display

ViewSonic

(VE700-1_SM_545 - Rev. 1a – May 2002)



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

Copyright

Copyright ¤ 2002 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.

Revision History

Revision Date Description Of Changes Approval

1a 7/17/02 Initial Reversion DCN-2254 K.Yang

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TABLE OF CONTENTS

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

1.

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

2.

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

3.

INTERNAL CONNECTOR PIN DEFINITION ............................................................4

4.

CABLE PIN DEFINITION.........................................................................................10

5.

BLOCK DIAGRAM...................................................................................................13

6.

TROUBLE SHOOTING FLOW CHART...................................................................14

7.

SPARE PARTS LIST................................................................................................20

8.

EXPLODED DIAGRAM............................................................................................2 5

9.

SCHEMATIC DIAGRAMS........................................................................................2 7

10.

11. PCB LAYOUT DIAGRAM........................................................................................36

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PRECAUTIONS AND NOTICES

1.

Prior to using this manual, please ensure that you have carefully followed all the procedures
outlined in the user manual for this product.

Read all of these instructions.

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Save these instructions for later use.

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Follow all warnings and instructions marked on the product.

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Do not use this product near water.

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This display should be installed on a solid horizontal base.

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

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with liquid or aerosol cleaners.

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

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and other parts.

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

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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.

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

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

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

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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.

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SPECIFICATIONS

2.

LCD panel type 17.0” TFT(AU)

Power Consumption 40 W

Displayable Resolution SXGA 1280 x 1024 maximum

Pixel dimension 0.264 mm x 0.264 mm

Display Color 16.7 M

Viewing Angle
(CR=10)

Horizontal: ±75
Vertical: ±70

°

°

RESPONSE TIME 40 ms typ.

Contrast Ratio 400:1 typ.

Brightness 250 cd / m2 typ.

Active Display Area 337.9 mm horizontal x 270.3mm vertical

AC/DC adapter Input:AC 87~264V,47~63 Hz

Output:+12V DC.

Dimensions ( WxHxD ) 413.8 mm(W) x 403(H) mm x 229(D) mm

Weight 6.2 kg (unit)

Input connector 15 Pin D-Sub.

Power management < 2W in Active Off mode

Temperature Operating : 0°C ~ +40°C

Storage : -20°C ~ +60°C

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LOCATION OF CONTROLS

3.

ϧ

[1]MENU ADJUST

ADJUST ϰ

[2]ENTER POWER

LED

Figure 3-1: Front Panel Controls & Indicators

1) POWER :
Press the power key to turn the monitor on. Press it again to turn the monitor off.

2) [1]MENU :
Enter or exit the OSD adjustment menu.it also exit from the submenu back to previous menu.

3) [2]ENTER :
To confirm the current selection

4) ADJUST ϧ (UP)

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

5) ADJUST ϰ :(DOWN)

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

6) POWER INDICATOR :
The LED will light with green color in normal on state,and will light with orange color in power saving mode.

7) Brightness/Contrast: press button UP/DOWN .

8) Auto Image Adjust : press button [2] .

9) OSD lock and unlock: press two buttons [1]&[Up] simultaneously for 10 seconds.

10) Power lock and unlock: press two buttons [1]&[Down] simultaneously for 10 seconds.

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INTERNAL CONNECTOR PIN DEFINITION

4.

SXGA I/F BOARD(DPWBN5408T8----)

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

JP4

Input Terminal
Connector P/N:VCNCP0908REJST-

Pin NO. Symbol Function

1 MENU For OSD Adjustment

2 ENTER For OSD Adjustment

3 UP For OSD Adjustment

4 DOWN For OSD Adjustment

5 RED For LED

6 GREEN For LED

7 PSW Power ON/OFF

8 GND

JP1 :Output Terminal for inverter unit

Connector P/N :VCNCP0906REJST-

Pin NO. Symbol Function

1

2

3

4

5

6

VIN Supply Voltage for Inverter unit(DC+12)

VIN Supply Voltage for Inverter unit(DC+12)
ON/OFF

DIMMING
GND

GND

JP3:Power Input Terminal

Connector P/N :QJAKP1044T8----

Pin NO. Symbol Function

1 POWER DC+12V

2 POWER DC+12V

3 GND GND

4 GND GND

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XGA I/F BOARD (DPWBN5408T8----)
J1:Signal input terminals

Connector P/N:QCNCD1145T8----

Pin NO. Symbo Function

1 RED RED Video input signal

2 GREEN GREEN Video input signal

3 BLUE BLUE Video input signal

4 GND GND

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

9 5V_DDC TO DDC PIN 8

10 SYNC. RETURN GND for SYNC. Signal

11 GND GND

12 DDC data TO DDC PIN 5(SDA)

13 H SYNC Horizontal Sync.signal

14 V SYNC Vertival Signal

15 DDC clock TO DDC PIN 6(SCL)

J2:Output terminal for LCD PANEL

Connector P/N:QCNCP2001T8----

Pin NO. Symbo Function

1 EPCL

2 ELOAD

3 EDO/I

4 GND

5 XECLK

6 GND
7 XEDINV

8 GND

9 XOOR7
10 XOOR6

11 XOOR5

12 XOOR4

13 XOOR3

14 XOOR2

15 XOOR1

16 XOOR0

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Pin NO. Symbo Function

17 XOOG7

18 XOOG6

19 XOOG5

20 XOOG4

21 XOOG3

22 XOOG2

23 XOOG1

24 XOOG0

25 GND

26 XOOB7

27 XOOB6

28 XOOB5

29 XOOB4

30 XOOB3

31 XOOB2

32 XOOB1

33 XOOB0

34 OPOL

35 OLOAD

36 ODOM

37 GND

38 XOCLK

39 GND

40 XODINV

41 GND

42 XOFR7

43 XOFR6

44 XOFR5

45 XOFR4

46 XOFR3

47 XOFR2

48 XOFR1

49 XOFR0

50 XOFG7

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J3:Output terminal for LCD PANEL

Connector P/N:QCNCP2001T8----

Pin NO. Symbo Function

1 XFOR7

2 XFOR6

3 XFOR5

4 XFOR4

5 XFOR3

6 XFOR2

7 XFOR1

8 XFOG0

9 XFOG7

10 XFOG6

11 XFOG5

12 XFOG4

13 XFOG3

14 XFOG2

15 XFOG1

16 XFOG0

17 GND

18 XFOB7

19 XFOB6

20 XFOB5

21 XFOB4

22 XFOB3

23 XFOB2

24 XFOB1

25 XFOB0

26 XFFR7

27 XFFR6

28 XFFR5

29 XFFR4

30 XFFR3

31 XFFR2

32 XFFR1

33 XFFR0

34 GND

35 XFFG7

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36 XFFG6

Pin NO. Symbo Function

37 XFFG5

38 XFFG4

39 XFFG3

40 XFFG2

41 XFFG1

42 XFFG0

43 XFFB7

44 XFFB6

45 XFFB5

46 XFFB4

47 XFFB3

48 XFFB2

49 XFFB1

50 XFFB0

J1:Output terminal for LCD PANEL

Connector P/N:QCNCP2002T8----

Pin NO. Symbo Function

1 XOFG6

2 XOFG5

3 XOFG4

4 XOFG3

5 XOFG2

6 XOFG1

7 XOFG0

8 GND

9 XOFB7

10 XOFB6

11 XOFB5

12 XOFB4

13 XOFB3

14 XOFB2

15 XOFB1

16 XOFB0

17 V+3.3V

18 V+3.3V

19 V+3.3V

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20 AVDD_+9.6V

Pin NO. Symbo Function

21 AVDD_+9.6V

22 AVDD_+9.6V

23 YV1_+25.09V

24 YVEE_-4.96V

25 GND

26 GALE_ON

27 YOE

28 YCLK

29 YDIO2

30 YDIO1

SW board (DPWBN5415T8----)
CN4:Output Terminal for OSD,power and brightness control
Use connector:VCNCP0908REJST-

Pin NO. Symbo Function

1 KEY

2 LED-G

3 LED-R
4 MENU S1 For OSD Adjustment
5 SELECT S2 For OSD Adjustment

6 GROUND
7 DOWN S4 For OSD Adjustment

8 UP S3 For OSD Adjustment

INVERTER
CON1:Inverter input Terminal

Pin Symbo Function
1 VBL +12V Power Supply for backlight

2 VBL +12V Power Supply for backlight

3 BLON Backlight on/off signal

(HI:backlight ON,Low:backlight OFF)TTL level

4 DIMMI Ground for VBL line ,VDIM and BLON

5 GND

6 GND

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