ViewSonic VE700-1 User manual

Service Manual
(VE700-1_SM_545 - Rev. 1a – May 2002)
ViewSonic381 Brea Canyon Road, Walnut, California 91789 USA - [phone]
ViewSonic VE700-1
Model No. VLCDS23724-1W
17” Color TFT LCD Display
VA720-2
VLCDS23724-2W

ViewSonic Corporation ii
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
1. PRECAUTIONS AND NOTICES...............................................................................1
2. SPECIFICATIONS ....................................................................................................2
3. LOCATION OF CONTROLS.....................................................................................3
4. INTERNAL CONNECTOR PIN DEFINITION ............................................................4
5. CABLE PIN DEFINITION.........................................................................................10
6. BLOCK DIAGRAM...................................................................................................13
7. TROUBLE SHOOTING FLOW CHART...................................................................14
8. SPARE PARTS LIST................................................................................................20
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9.EXPLODED DIAGRAM............................................................................................25
11.PCB LAYOUT DIAGRAM........................................................................................36
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10.SCHEMATIC DIAGRAMS........................................................................................27

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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 VE700-1
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2. SPECIFICATIONS
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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 / m2typ.
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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3. LOCATION OF CONTROLS
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[1]MENU ADJUST ϧLED
[2]ENTER POWER
ADJUST ϰ
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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4. INTERNAL CONNECTOR PIN DEFINITION
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SXGA I/F BOARD(DPWBN5408T8----)
JP4 :Key Switch for OSD Adjustment,Power Switch and Brightness Control
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
1VIN Supply Voltage for Inverter unit(DC+12)
2VIN Supply Voltage for Inverter unit(DC+12)
3ON/OFF
4DIMMING
5GND
6GND
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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Switch board cable(QCNWS0908T8006-):24AWG,shielding cable
connection relationship
Inverter cable(QCNWS0906T8010-):24AWG,Shielding cable
connection relationship
PHR-6 PHR-6
Pin NO. Pin NO.
11
22
34
43
55
6 6
PHR-8 PHR-8
Pin NO. Pin NO.
18
27
36
45
54
63
72
81
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5.CABLE PIN DEFINITION
VE700-1
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connection relationship
Pin NO.(FH12-
50S-0.5SH)
Pin NO.(PANEL) Pin NO. (FH12-
50S-0.5SH)
Pin NO.(PANEL)
1 1 38 38
2 2 39 39
3 3 40 40
4 4 41 41
5 5 42 42
6 6 43 43
7 7 44 44
8 8 45 45
9 9 46 46
10 10 47 47
11 11 48 48
12 12 49 49
13 13 50 50
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
PANEL cable(QCODS1477T8----)*2
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connection relationship
Pin NO.(FH12-
30S-0.5SH)
Pin NO.(PANEL)
1 1
2 2
3 3
4 4
5 5
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
PANEL cable(QCODS1476T8----)
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6.BLOCK DIAGRAM
FROM
A/D ADAPTOR
INTERFACE BOARD(DPWBN5408T8----)
COMPUTER
GRAPHIC
12V
5V
W1
(DB15)
A/D
CONVERTER
SCALER
SD1210-2 T-CON
(U17)
J2
J1
J3
DDC
EPROM
24C21A
Serial
EEPROM
MPU
(U14)
MTV130P
OSD
JP1
TO
INVERTER
JP2 SWITCH MODE
POWER SUPPLY
17” LCD
PANEL
SW BOARD
DPWBN5415T8----
TCON
DC-DC
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7.TROUBLE SHOOTING FLOW CHART
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YES
NO
ON
OFF
GREEN
Hsync,Vsync
Or DE error
ORANGE
OSD no response
Too dim
The brightness is
different between upper
and lower side of panel
Partical picture without
color
Vertical,Horizontal
Out of sync
One or more colored
vertical lines
Even(or odd) vertical
line is dark
Does
picture
display
Back-light
On or off?
A dark picture
or a picture
full of
colored
vertical lines
Check
power
LED
Check display
resoluton
Check inverter
Check I/F board
JP1
Check LED cable
Check I/F board JP4
Check LED panel J1
Check I/F board
Check SW board S1~S4
Check OSD adjustment
Check inverter
Check backlight
Check connector board
Check I/F board
Check LCD panel
Check LCD panel
Check I/F board
Check SW board J1
Check inverter
Check I/F board
RGB signal
error
H,V sync
error
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DPWBN5408
Debug Procedure
Does the screen
display?? YESNO
display ok?
YES
OSD
debug
(3)
NO
solution with
no display
(2)
loss of RGB??
NO
screen
shaking??
CHK LP1~LP12
CHK U1& C2,C4,
R2 for PLL
NO
CHK R83,84,86,L23
YES
JP2,+12V
INPUT
lost some bits
of RGB? YES
Yes
Check C6(R)
C11G),C14(B)
NO
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No screen
handler
(2)
Back-light
on YESNO
3.3V OK?
YES
NO
START
RP 1 ~RP 6
YES
U1
PIN 30/31 OK?
U17
PIN1~24,34~47,63~77,246~256
YES
A
CHK CKT
SHEET 6
(POWER)
NO
NO
CHKU1
+3.3V2/+3.3V3_PLL
PIN 29/ clamp
NO
CHK U14 & X1
B
YES
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CHK CKT
SHEET 6
(POWER)
No screen
handler
(2)
BA
CHK U17 LED always ON or
always OFF when
powering on
CHK U14
CKT
YESNO
CHK SYSTEM
POWER
CHK U8
OK NG
CHK CKT
SHEET 2
(PANEL)
CHK U16(if recall
function is OK)
YES
CHK
LP1~LP11
NO
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