Service Manual - Michael Jay Lissner

Service Manual
ViewSonic VPW425
Model No. VLCDS22554-1W
42” Plasma TV Monitor
(VPW425-1_SM_598 - Rev. 1a – August 2002)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
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
1a
8/28/02
ii
Description Of Changes
Initial Issue – DCN2564
Approval
T. Sears
VPW425-1 Service Manual
Service Manual
ViewSonic VPW425
Model No. VLCDS22554-1W
42” Plasma TV Monitor
(VPW425-1_SM_598 - Rev. 1a – August 2002)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
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
1a
8/28/02
ii
Description Of Changes
Initial Issue – DCN2564
Approval
T. Sears
VPW425-1 Service Manual
TABLE OF CONTENTS
1. WARNINGS & CAUTIONS ................................................................................................................. 1-1
2. SPECIFICATIONS ................................................................................................................................ 2-1
3. EXPLODED VIEW................................................................................................................................ 3-1
4. FACTORY & ELECTRONIC ADJUSTMENTS ................................................................................. 4-1
5. BLOCK DIAGRAM .............................................................................................................................. 5-1
6. TROUBLESHOOTING FLOW CHART .............................................................................................. 6-1
7. PC BOARD ASSEMBLY VIEWS ........................................................................................................ 7-1
8. MAJOR ELECTRONIC ASSEMBLY PARTS LIST............................................................................ 8-1
9. PACKING LIST..................................................................................................................................... 9-1
iii
VPW425-1 Service Manual
IMPORTANT SAFETY PRECAUTIONS
VER1.0
1. Before returning an instrument to the customer, always make a safety check of the entire instrument,
including, but not limited to, the following items.
a. Be sure that no built-in protective devices are defective and/or have been defeated during servicing. (1) Protective
shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing
protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or
other assembly in the cabinet, be sure to put back in place all protective devices, including, but not limited to,
nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and isolation
resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective
devices correctly installed and functioning.
b. Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers
and contact a hazardous voltage, Such opening include, but are not limited to, (1) spacing between the picture
tube and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or
incorrectly secured cabinet back cover.
c. Leakage Current Hot Check—
—With the instrument completely reassembled, plug the AC line cord directly into a
120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering
system that complies with American National Standards Institutes (ANSI) C101.1 Leakage Current for Appliances
and Underwriters Laboratories (UL) 478. With the instrument AC switch first in the ON position and then in the
OFF position, measure from a known earth ground (metal waterpipe, conduit, etc.) to all exposed metal parts of
the instrument (antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.),
especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must
not exceed 3.5 milliamp. Reverse the instrument power cord plug in the outlet and repeat test. ANY
MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK
HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER.
AC Leakage Test
LEAKAGE
CURRENT
TESTER
DEVICE
UNDER
TEST
(READING
SHOULD NOR
BE ABOVE
3.5mA)
+ TEST ALL
EXPOSED METAL
SURFACES
3. WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
EARTH
GROUND
2. Read and comply with all caution and safety-related notes on or inside the Monitor cabinet, on the Projection
Monitor chassis, or on the picture tube.
3. Design Alteration Warning—
—Do not alter or add to the mechanical or electrical design of this unit. Design
alterations and additions, including, but not limited to, circuit modifications and the addition of the items such as
auxiliary audio and/or video output connections might alter the safety characteristics of this Projection Monitor
and create a hazard to the user. Any design alterations or additions will void the manufacturer’s warranty and will
make you, the service, responsible for personal injury or property damage resulting therefrom.
1-01
IMPORTANT SAFETY PRECAUTIONS
VER1.0
4. Hot Chassis Warning—
—a. Some Monitor chassis are electrically connected directly to one conductor of the AC
power cord and may be safely serviced without an isolation transformer only if the AC power plug is inserted so
that the chassis is connected to the ground side of the AC power source. To confirm that the AC power plug is
inserted correctly, with an AC voltmeter measure between the chassis and a known earth ground. If a voltage
reading in excess of 1.0V is obtained, remove and reinsert the AC power plug in opposite polarity and again
measure the voltage potential between the chassis and a known earth ground. b. Some Monitor chassis normally
have 85V AC (RMS.), between chassis and earth ground regardless of the AC plug polarity. These chassis can
be safely serviced only with an isolation transformer inserted in the power line between the receiver and the AC
power source, for both personnel and test equipment protection. c. Some Projection Monitor chassis have a
secondary ground systems in addition to the main chassis ground. This secondary ground system is not isolated
from the AC power line. The two ground system are electrically separated by insulating material that must not be
defeated or altered.
5. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp
edges, b. near thermally hot parts—be sure that leads and components do not touch thermally hot parts, c. the
AC supply, d. high voltage, e. antenna wiring. Always inspect in all areas for pinched, out-of-place, or frayed
wiring. Do not change spacing between components, and between components and the printed-circuit board.
Check AC power cord for damage.
6. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced
with components, parts, or wireing that meet original specifications. Additionally, determine the cause of
overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.
7. PRODUCT SAFETY NOTICE — Many Monitor electrical and mechanical parts have special safety-related
characteristics some of which are often not evident from visual inspection, nor can the protection they give
necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have
special safety characteristics are identified in this service data by shading with a
mark on schematics and by
shading or a ＊ mark in the parts list. Use of a substitute replacement part that does not have the same safety
characteristics as the recommended replacement part in this service data parts list might create shock, fire,
and/or other hazards.
1-02
SPECIFICATION
VER1.0
1.
SCOPE:
These specifications describe all the characteristics of the 42 inch color monitor.
2.
ELECTRICAL REQUIREMENTS:
2.1.
2.2.
Display panel:
Specification
a.
b.
c.
d.
e.
f.
Diagonal 42 inch
16:9 wide
852(Horizontal, RGB Trio ) X 480(Vertical)pixels
1.08mm X 1.08mm
570cd/m2,at APL13%
x=0.270±
±0.03, y=0.300±
±0.03(color temperature mode 1 : ) at
center block white pattern 100% (mosaic).
Screen size
Aspect ratio
Number of pixels
Pixel Pitch
Luminance
Chromatically
Power Source:
a.
b.
c.
d.
Input voltage
Input current
Inrush current
Power consumption
e. Stand-by & DPMS
2.3.
100 ~ 240 Vac , 50 / 60 Hz
3.3A
60 A p-p/20ms Max.
380±
±10% Watts ( at 110Vac/color bar pattern)
5 Watts Max. (at 110Vac)
Input Signal:
2.3.1 Connector Type:
RCA Jack for audio, video Y/CB/CR and Y/PB/PR
6 pin Din S-terminal
9 pin D-SUB
15 pin D-SUB
24 pin DVI
2.3.2 Video/S-Video Signal:
a.
b.
c.
d.
Type
Polarity
Amplitude
Frequency
e. Input impedance
Analog
Positive
Video 1Vp-p , (priority S-Video) Y=1Vp-p C=0.286Vp-p
H: 15.734KHz V: 60Hz(NTSC)
H: 15.625KHz V: 50Hz(PAL)
75 ohms
2.3.3 Y/CB/CR or Y/PB/PR Signal:
a. Type
b. Polarity
c. Amplitude
Analog
Positive
AV: 1Vp-p (with sync)
S-Video: Y: 1Vp-p ,C: 0.286Vp-p
d. Frequency
Y/CB/CR
Y/P /P : HDTV
B
R
H: 15.734KHz ,V: 60Hz (NTSC)
H: 15.625KHz ,V: 50Hz (PAL)
1. 31KHz/60Hz (480P)
2. 45KHz/60Hz (720P)
3. 33KHz/60Hz(1080I)
2-1
SPECIFICATION
VER1.0
2.3.4 RGB Signal:
a. Type
b. Polarity
TTL
c. Amplitude
d. Frequency
RGB: 0.7Vp-p
H: support to 31K~91KHz
V: support to 50~85Hz
Positive or Negative
2.3.5 DVI Signal:
a. Type
b. Polarity
c. Frequency
2.3.6 Audio Signal:
Digital
Positive or Negative
H: support to 31K~63KHz
V: support to 50~85Hz
Analog 500mV rms /more than 22Kohm
2.3.7 Pin Assignments For D-SUB Connector (In / Loop Out):
Pin
1
2
3
4
5
Signal Assignment
RED
GREEN
BLUE
GND
GND
Pin
6
7
8
9
10
Signal Assignment
RED GND
GREEN GND
BLUE GND
NC
GND
Pin
11
12
13
14
15
Signal Assignment
GND
SDA
H-SYNC
V-SYNC
SCL
Pin
17
18
19
20
21
22
23
24
Signal Assignment
TMDS Data 0TMDS Data 0+
TMDS Data 0/5 Shield
TMDS Data 5TMDS Data 5+
TMDS Clock Shield
TMDS Clock +
TMDS Clock -
2.3.8 Pin Assignments For 24 Pin DVI Connector(Digital Only):
Pin
1
2
3
4
5
6
7
8
Signal Assignment
TMDS Data 2TMDS Data 2+
TMDS Data 2/4 Shield
TMDS Data 4TMDS Data 4+
DDC Clock
DDC Data
No Connect
Pin
9
10
11
12
13
14
15
16
Signal Assignment
TMDS Data 1TMDS Data 1+
TMDS Data 1/3 Shield
TMDS Data 3TMDS Data 3+
+5V Power
Ground (For +5V)
Hot Plug Detect
2-2
SPECIFICATION
VER1.0
2.3.9 RGB/DVI For VESA Standard:
Mode No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15◎
◎
16◎
◎
18
19
20◎
◎
21◎
◎
22
23
640(VGA)×
× 480
640(VGA)×
× 480
640(VGA)×
× 480
640(VGA)×
× 480
800(SVGA)×
× 600
800(SVGA)×
× 600
800(SVGA)×
× 600
800(SVGA)×
× 600
(Hz)
60
72
75
85
56
60
72
75
(K Hz)
31.5
37.9
37.5
43.3
35.1
37.9
48.1
46.9
(Hz)
59.94
72.81
75
85.01
56.25
60.317
72.19
75
Vertical
Sync
Polarity
(TTL)
+
+
+
+
800(SVGA)×
× 600
1024(XGA)×
× 768
1024(XGA)×
× 768
1024(XGA)×
× 768
1024(XGA)×
× 768
1280(SXGA)×
× 1024
1280(SXGA)×
× 1024
1280(SXGA)×
× 1024
640(VGA)×
× 350
640(VGA)×
× 480
1280(HDTV)×
× 720P
1920(HDTV)×
× 1080I
720(DOS)×
× 400
852(WGA)×
× 480
85
60
70
75
85
60
75
85
70
50
60
60(I)
70
60
53.7
48.4
56.5
60.0
68.7
63.98
79.98
91.15
31.50
31.5
45.15
33.78
31.46
31.72
85.06
60.01
70.07
75.03
84.99
60.02
75.03
85.02
70
50
60
60
70.08
60.41
+
+
+
+
+
+
+
-
+
+
+
+
+
+
-
Vertical
Sync
Polarity
(TTL)
-
Horizontal
Sync
Polarity
(TTL)
-
Resolution
Refresh
Rate
Horizontal Vertical
Frequency Frequency
Horizontal
Sync
Polarity
(TTL)
+
+
+
+
Dot rate
(MHz)
25.175
31.500
31.500
36.000
36.000
40.000
50.000
49.500
56.250
65.000
75.000
78.750
94.500
108.00
135.00
157.50
25.175
25.175
74.250
74.250
28.320
34.00
RGB/DVI For Apple Standard.
Mode No
Resolution
24
25
26
640×
× 870
832 x 624
1152 x 870
Refresh
Rate
(Hz)
75
75
75
Horizontal Vertical
Frequency Frequency
(K Hz)
68.85
49.73
68.68
Attention ◎: For DVI is not supported.
2.3.10 Y/PB/PR For Component:
Mode No
1
2
3
Resolution
640 × 480P
1920 × 1080I
1280 × 720P
Refresh Rate
60
60
60
2-3
(Hz)
75.00
74.55
75.06
Dot rate
(MHz)
57.283
57.283
100.000
SPECIFICATION
2.4.
VER1.0
Display Performance Requirements:
The data of display performance are measured based on the following.
Conditions unless otherwise specified.
a.
b.
c.
d.
e.
f.
Ambient temperature
Warm up period
Line input voltage :
Viewing distance
Display mode
Brightness condition
2.4.1 Maximum Resolution:
25±
±5 ℃
30 minutes Min.
100 Vac ~ 240 Vac (50 / 60 Hz)
Distance from screen is 81 cm
Test with window white pattern mode if not specified.
Press recall bottom to set default brightness
Support to 1280 x 1024
2.4.2 Horizontal Size (Standard)
Vertical Size (Standard)
920±
±8 mm (for mode 1〜
〜26)
518±
±8 mm (for mode 1〜
〜26)
2.4.3 Horizontal Size (Max.)
Vertical Size (Max.)
Mode 1~26Ö
Ö full-scan
Mode 1~26Ö
Ö full-scan
2.4.4 Maximum Brightness Level:
Timing Mode 1
a. 100% center block white
pattern(mosaic)
b. raster background
2.5.
More than 30FL
(while pressing recall button to set default brightness)
with contrast / brightness at Max. and black signal)
less than 0.4FL
Operation:
Main unit button
IR Remote Control
Main power switch (power ON /OFF)
Power ON/OFF
Input Mode (Video1 -> S-Video1 -> Video2 or S-Video2 ->
Y/PB/PR 1 or Y/CB/CR 1 -> Y/PB/PR 1 or Y/CB/CR 1 -> RGB ->
DVI->Video1 run in circle)
Menu key -,+ Adjustment -,+
Power on/off
Input Mode (same as Main unit button)
Volume -,+ Wide , Video/S video
input:4:3/16:9/ZOOM1/ZOOM2
Analog RGB input :W4:3/W16:9
Menu -,+ Adjustment -,+ RECALL
PIP ,POP ,SWAP ,MUTE
2.5.1 Adjustable Items:
AV/S-video input
Y/CB/CR
Brightness, Contrast, Color , Tint, Sharpness
Color Temperature
Analog RGB input
Display position :
Brightness, Contrast, Vertical position, Vertical width,
Horizontal position, Horizontal width, Color Temperature
Clock phase, DPMS.
DVI input
Brightness, Contrast, Vertical position, Vertical width,
Horizontal position, Horizontal width, Color Temperature,
DPMS
3.
DIMENSIONS:
Without/Stand
2-4
With/Stand
SPECIFICATION
Width
Height
Depth
3.1.
1230 mm
960 mm
470 mm
79.4lbs/36 Kgs (w/o stand) 83.8lbs/ 38Kgs (w/ stand)
115lbs/52 Kgs
ENVIRONMENT:
4.1.
Operating:
Temperature
Relative humidity
Pressure
4.2.
4.3.
5.
1040mm
690mm
375 mm
Weight:
Net weight
Gross weight
4.
1040mm
648 mm
95mm
Package Dimensions:
Width
Height
Depth
3.2.
VER1.0
0~40℃
℃(32~104℉
℉)
20~80%
800~1114hpa
Non-Operating:
Temperature
Relative humidity
Pressure
Vibration
-20~60℃
℃
20~90%
700~1114hpa
X/Y/Z, 0.5G/10~55Hz(sweep), 10 minutes
Acoustics:
(IHF A-weighted 1meter)
40dB Max.
SOUND:
500μ
μW Max.
a. Residual hum (at volume min)
b. Practical max. Audio output (at 10% THD max.)
1.0vp-p
1K Hz input
5W +5W Max. /12 ohm
c. Sound distortion (at 250 mw 1K Hz)
1% Max.
d. Sound distortion
(at
i.ovp-p 1kHz input volume max )
9% max
≧1.0 VP-P
e. Audio output (input at 1.4VP-P)
1000μ
μW Max.
f. Max. hum (at volume max)
150mV ± 3dB
g. Sensitivity (at volume max. O/P 1W)
at 1KHz AV Input
h. Audio Fidelity (1KHz 0dB,corrected for emphasis characteristics)
6dB ± 3dB
BBE ON
60Hz
8dB ± 3dB
10KHz
-6dB ± 3dB
WOOFER & BBE OFF
100Hz
-2dB ± 3dB
10KHz
6.
RF
2-5
SPECIFICATION
6.1
RF Sensitivity (Peak)
VHF
UHF
CATV
6.2
± 0.6MHz Min.
± 0.6MHz Min.
± 0.6MHz Min.
CH 2 ~ CH 13
CH 14 ~ CH 69
CH A-5 ~ CH W+29
CH 2 ~ CH 13
CH 14 ~ CH 69
CH A-5 ~ CH W+29
50dB Min.
50dB Min.
50dB Min.
Picture Image Rejection
VHF
UHF
CATV
6.5
30dB Max.
30dB Max.
30dB Max.
Picture IF Rejection
VHF
UHF
CATV
6.4
CH 2 ~ CH 13
CH 14 ~ CH 69
CH A-5 ~ CH W+29
AFT Pull-In Range
VHF
UHF
CATV
6.3
VER1.0
CH 2 ~ CH 13
CH 14 ~ CH 69
CH A-5 ~ CH W+29
40dB Min.
35dB Min.
35dB Min.
AGC Characteristics
AGC Figure Of Merit
50dB Min.
RF signal range in which video at PDP drops 6 dB from output level obtained
with 100mV input.
6.6
RF AGC Cut In Level
55dB ± 2dB
6.7
FM/AM Rejection (100mV at SIF input)
14dB min
6.8
Noise Limits Sensitivity
VHF 45dB max
UHF 49dB max
7.
8.
8.1
RELIABILITY REQUIREMENT:
The MTBF needs 20000hrs under operation 25±
±5℃
℃(half luminosity, motion picture)
REGULATORY REQUIREMENTS:
Safety Requirement:
a. UL
b. CSA
Safety of information technology equipment including
electrical business equipment
Safety of information technology equipment including
electrical business equipment
c. TUV
8.2
Emission Requirement:
The unit shall meet the EMI limits in all screen modes. For EMI testing, the unit must be failed
with the screen pattern consisting of scrolling capital “H” characters also the brightness
contrast will be adjusted to max. Level.
a. FCC class A part 15
8.3
Transit test
2-6
SPECIFICATION
a.
Drop Test
b.
Vibration Test
1.
2.
3.
8.4
VER1.0
200mm max.
Forward and backward
Right and left
Up and down
30 minutes 1000 c.p.m
30 minutes 1000 c.p.m
30 minutes 1000 c.p.m
Power Management:
Mode
Normal
Stand-by
Power saving
H-sync
Pulse
No pulse
Pulse
No pulse
V-sync
Pulse
No pulse
No pulse
Pulse
Video
Active
No video
Power dissipation
Normal power
Power off
Blanked
Less than 5 watts
This Plasma display is Energy star compliant when used with a computer equipped with
DPMS.
Note: The power indicator LED color is green in normal state, yellow in stand-by
and power saving state.
9.
VIDEO & AUDIO
9.1
Video Signal Output (impedance 75 ohm)
(input signal at 1.0 Vp-p ± 0.2Vp-p)
2-7
1.0 Vp-p ± 0.2Vp-p
SPECIFICATION
VER1.0
APPENDIX A :
Preset Timing Chart
A
B
C
D
(Video)
F
G
Item
A
B
C
D
E
F
G
H
I
H
I
E
(Sync)
Description:
Total time
Active display area including borders
Active display area excluding borders
Left/Top border
Right/bottom border
Blanking time
Front porch
Sync-width
Back porch
Mode No
Resolution
&
Refresh Rate
Pixel
Horizontal visible
Horizontal total
Horizontal front porch
Horizontal sync
Horizontal back porch
Horiz blanking time
Vertical visible
Vertical total
Vertical front porch
Vertical sync
Vertical back porch
Vertical blanking time
Horizontal frequency
Vertical frequency
Vertical sync polarity
Horiz sync polarity
Dot rate
1
640
480
60
25.175
640
800
24
96
40
160
480
525
18
2
25
45
31.469
59.94
25.175
2
640
480
72
31.5
640
832
32
40
120
192
480
520
17
3
20
40
37.9
72.81
31.5
3
640
480
75
31.5
640
840
16
64
120
200
480
500
1
3
16
20
37.5
75
31.5
4
640
480
85
36
640
832
56
56
80
192
480
509
1
3
25
29
43.3
85.01
36
2-8
5
800
600
56
36
800
1024
24
72
128
224
600
625
1
2
22
25
35.1
56.25
+
+
36
6
800
600
60
40
800
1056
40
128
88
256
600
628
1
4
23
28
37.9
60.317
+
+
40
7
800
600
72
50
800
1040
56
120
64
240
600
666
37
6
23
66
48.1
72.19
+
+
50
8
800
600
75
49.5
800
1056
16
80
160
256
600
625
1
3
21
25
46.9
75
+
+
49.5
9
800
600
85
56.25
800
1048
32
64
152
248
600
631
1
3
27
31
53.7
85.06
+
+
56.25
Hz
MHz
Dots
Dots
Dots
Dots
Dots
Dots
Lines
Lines
Lines
Lines
Lines
Lines
KHz
Hz
TTL
TTL
MHz
SPECIFICATION(Preliminary)
Mode No
Resolution
&
Refresh Rate
Pixel
Horizontal visible
Horizontal total
Horizontal front porch
Horizontal sync
Horizontal back porch
Horiz blanking time
Vertical visible
Vertical total
Vertical front porch
Vertical sync
Vertical back porch
Vertical blanking time
Horizontal frequency
Vertical frequency
Vertical sync polarity
Horiz sync polarity
Dot rate
10
1024
768
60
65
1024
1344
24
136
160
320
768
806
3
6
29
38
48.4
60.01
65
11
1024
768
70
75
1024
1328
24
136
144
304
768
806
3
6
29
38
56.5
70.07
75
12
1024
768
75
78.75
1024
1312
16
96
176
288
768
800
1
3
28
32
60
75.03
+
+
78.75
13
1024
768
85
94.5
1024
1376
48
96
208
352
768
808
1
3
36
40
68.7
84.99
+
+
94.5
Mode No
Resolution
&
Refresh Rate
Pixel
Horizontal visible
Horizontal total
Horizontal front porch
Horizontal sync
Horizontal back porch
Horiz blanking time
Vertical visible
Vertical total
Vertical front porch
Vertical sync
Vertical back porch
Vertical blanking time
Horizontal frequency
Vertical frequency
Vertical sync polarity
Horiz sync polarity
Dot rate
20
1280
720P
60
74.250
1266
1650
42
63
279
384
687
750
1
6
56
63
45.15
60
74.25
21
1920
1080I
60I
74.25
1901
2201
68
63
169
300
518
562.5
0.5
6
38
44.5
33.78
60
74.25
22
720
400
70
28.320
720
900
18
108
54
180
400
449
12
2
35
49
31.46
70.08
+
28.32
23
852
480
60
30
852
955
19
48
36
103
480
525
10
2
33
45
31.72
60.41
30
2-9
14
1280
1024
60
108
1280
1688
48
112
248
408
1024
1066
1
3
38
42
63.98
60.02
+
+
108
15
1280
1024
75
135
1280
1688
16
144
248
408
1024
1066
1
3
38
42
79.98
75.03
+
+
135
16
1280
1024
85
157.5
1280
1728
64
160
224
448
1024
1072
1
3
44
48
91.15
85.02
+
+
157.5
18
19
640
640
350
480
70
50
Hz
25.175 25.175 MHz
640
640
Dots
800
800
Dots
16
16
Dots
96
96
Dots
48
48
Dots
160
160
Dots
350
480
Lines
449
629
Lines
37
62
Lines
2
2
Lines
60
85
Lines
99
149
Lines
31.50
31.5
KHz
70
50
Hz
TTL
TTL
25.175 25.175 MHz
24
25
26
640
832
1152
870
624
870
75
75
75
57.283 57.283 100.000
640
832
1152
832
1152
1456
32
32
32
80
64
128
80
224
144
192
320
304
870
624
870
918
667
915
3
1
3
3
3
3
42
39
39
48
43
45
68.85 49.73 68.68
75.00 74.55 75.06
57.283 57.283 100.000
Hz
MHz
Dots
Dots
Dots
Dots
Dots
Dots
Lines
Lines
Lines
Lines
Lines
Lines
KHz
Hz
TTL
TTL
MHz
EXPLODED VIEW
VER1.0
3-1
FACTORY ADJUSTMENT METHOD
VER1.0
1. PANEL voltage adjustment
The power voltage should be adjusted and checked when changing the panel or power board.
POWER VOLTAGE ADJUST FOR SAMSUNG TTL PANEL
GND
POWER BOARD
VA VSC VS VR VSET
DIGITAL BOARD
EXT INT
CN01
VOLTAGE CHECK POINT
CN01 SELECT "INT"
CN05 SELECT "EXT"
EXT INT
CN05
PIN 1 & 5 CONNECT A POWER SWITCH
1. DIGITAL BOARD CON01 SELECT TO "INT".
2. DIGITAL BOARD CON05 SELECT TO "EXT".
3. MAKE A SW CONNECT TO POWER BOARD CON80011 PIN 1 & PIN5 FOR POWER
SWITCH.
4. FOLLOW THE PANEL LABEL VOLTAGE ADJUST VR.
5. VOLTAGE CHECK FROM "CHECK POINT" WITH GRAND.
6. ADJUST SEQUENCE
1st →
VA
VR8005
5th
2nd
→ 3rd → 4th →
VSC
VS
VR
VSET
VR8006 VR8003
VR8001
VR8007
4-1
FACTORY ADJUSTMENT METHOD
2.
VER1.0
Color temperature adjustment
Push the factory service key to into the adjustment mode. The following will appear:
DVI
X=0.335
GAIN
RGB
XXX
5400ºk
Y=0.343
Bias
RGB
XXX
Use the AV key to select the color to adjust andorkey to adjust the level.
The required equipment is CA-100,Vp300.
a. Adjust Bias first to set Y to 0.4 on CA-100. Adjust R or B to set the value of X,Y
on CA-100 to be the same as the value showing screen, The value of Y should be
maintained at 0.4 during adjustment.
b. Move the cursor to adjust Gain. The value of Y should be adjusted to 25. Then
adjust R or B to let the value of X,Y on CA-100 be the same as the value showing
on screen. The value of Y should be maintain 25 during the adjustment.
c. Repeat to check the Bias and Gain. The value of Y,X and Y should be the same as
the previous adjusted value. Then the DVI 5400ºk mode is adjusted complelely.
d. Push the factory service key again to next picture. Then repeat the steps a. b. c. to
adjust.
e. If the adjustment is completed, sepeat d. a. b. and c steps to adjust again.
f. When the last mode AV 13000ºk is adjusted completely, push the factory service
key again to leave the adjustment mode,
Note: 1. There are 12 adjusted modes(DVIx4.RGBx4 AVx4)
2. The adjusted sequence is DVIRGBAV.
3. DVI/RGB : Bias Y=0.4
Gain Y=25
AV : Bias Y=1
Gain Y=25
4-2
VER1.0
AV Module
Board(with
JP2_1
Tuner)
Pin[1:32]
Assy
JA2_1
PDP Socket Diagram
JP1_1
Pin[1:10]
Pin[1:32]
JA1_1
Pin[1:12]
Audio Amplifier
Board Ass'y
3
5
LA03_1
Image Board
Ass'y
J1_1
1
PANEL Power
Supply Ass'y
Pin[1:31]
J14_1
(LVDS)
Interface Board- Z Ass'y
Logic Board Ass'y 7
Pin[1:31]
12
Y Amp Board-Upper
BLOCK DIAGRAM
Pin[1:6]
Interface Board- Y Ass'y
JP4_1
(5V,SB DET )
PinA[1:48]
8
J21_1
Pin[1:7]
Y Amp Board-Lower
J15_1
4
Pin[1:4]
(9V)
J25_1
Pin[1:3]
SA_1
CON8011
Pin[1:6]
J12_1
Pin[1:10]
10
JP5_1
Front
Button
Control
Board
Assy
(24V,9V)
Pin[1:48]
6
Pin[7:13]
(Audio Signal)
J11_1
Pin[1:12]
AUDIO_1
CON8009
(Audio DC,Supply)
Pin[1:7]
Pin[1:2]
J5_1
(5V)
Pin[1:6]
(Key)
JA3_1
AC Master power swith Board
SW_1 2 AC IN_1
Power
SW
13
Pin[1:6]
AC OUT_1
Logic E-Buffer
11
Logic F-Buffer
9
14
Power Input
Module
Assy
AC
PLUG
Panel's Board Assem bly
5-1
SAM PO Board Assem bly
BLOCK DIAGRAM
VER1.0
Image Board Socket Data
Im age Board ←→ Panel
Im age Board ←→ AV Module Board
Im age Board
AV Module Board Content
Im age Board As s 'y
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
J1 (4 0 P i n )
G ND
NC
RA RA +
G ND
G ND
RB RB +
G ND
G ND
RCRC+
G ND
G ND
RCL K RCL K +
G ND
G ND
RDRD+
G ND
G ND
G ND
G ND
NC
G ND
NC
G ND
NC
G ND
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
J1 4 (6 P i n )
+5V S B
DG ND
DG ND
5V1
SB
DG ND
J1 5 (4 P i n )
V G ND
V G ND
NC
+9V
J2 1 (7 P i n )
+9V T
NC
DG ND
+24 V
+24 V
G ND
G ND
Im age Board ←→ Audio Am plifier Board
Im age Board
J1 1 (12 P i n)
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
Audio Am plifier Board
Content
JA 1 (1 2 P in )
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
2 4V
2 4V
DG ND
SB5V
DG ND
AO_SEL
S DA 2
S CL 2
A _ M UT E n
S URR1
S URR2
DG ND
J2 5 (3 P i n )
+5V A
V G ND
V G ND
JP 5 (4 8 P in )
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C1 0
C1 1
C1 2
C1 3
C1 4
C1 5
C1 6
JP 2 (4 8 P in )
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
B16
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C1 0
C1 1
C1 2
C1 3
C1 4
C1 5
C1 6
+9V T
DG ND
NC
DG ND
S CL 2
DG ND
S DA 2
DG ND
NC
DG ND
T V_R
DG ND
T V_L
DG ND
A FT _ T UN
T UN_DE T n
DV I_ L
DV I_ R
A G ND
L _O UT
R_ O UT
S UB _WFR
P WR_CT L
A G ND
A G ND
A G ND
A G ND
A G ND
A G ND
D_ CT L
RE S E T Q
SD
AS_M P
AS_SP
RS T _DP T V
SV2_SW
V 2 B _ DE T n
Y UV n_ RG B
1 5K n _ M P
1 5K n _ S P
SB5V
T DO
T DI
NC
NC
TMS
DG ND
T CK
Im age Board ←→ Audio Am plifier Board
Im age Board
J1 2 (10 P i n)
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Audio Am plifier Board
JA 2 (1 0 P in )
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
5-2
Content
L _IN
R_ IN
A G ND
L _O UT
R_ O UT
A G ND
S UB _WFR
S P K _CT L
P WR_CT L
NC
Im age Board ←→ AV Module Board
Im age Board
AV Module Board Content
JP 5 (4 8 P in )
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
C1
C2
C3
C4
C5
C6
C7
C8
C9
C1 0
C1 1
C1 2
C1 3
C1 4
C1 5
C1 6
JP 2 (4 8 P in )
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
B16
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C1 0
C1 1
C1 2
C1 3
C1 4
C1 5
C1 6
CO M P OS IT E
V G ND
S 2 _Y
S 2 _C
V G ND
Y1
P B 1 _ CB 1
P R1 _ CR1
V G ND
Y2
P B 2 _ CB 2
P R2 _ CR2
V G ND
A V B _DE T n
TV
V G ND
AV1_L
AV1_R
A G ND
S 2 _L
S 2 _R
A G ND
Y UV 1_ L
Y UV 1_ R
A G ND
Y UV 2_ L
Y UV 2_ R
A G ND
RG B _ L
RG B _ R
A G ND
A G ND
P Cn _ M P U
P CS CS
P CS I
P CS CLK
SSO
DG ND
P5V
S CL 2
S DA 2
DG ND
S CL _ S P
S DA _S P
DG ND
S CL 2 _3 3
S DA 2_ 33
DG ND
Im age Board ←→ Front Button Control Board
Front Button Control
Im age Board
Content
Board
J5 (6 P i n)
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
JA 3 (6 P i n)
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
RC_ O UT
S W_O UT
O N_ LE D
SB_LED
DG ND
SB5V
BLOCK DIAGRAM
VER1.0
Image Board Signal Block Diagram
SDRAM
(PAGE4)
TV
AV
S-VIDEO
TA8551CH
AV
SWITCH
VIDEO
Y
C
6630/6730
MAIN Video
Processor
RGB OUT
RGB IN
U45
(PAGE3)
IC1
SDRAM
(PAGE2)
VIDEO
Y
C
(PAGE12)
6630/6730
SUB Video
Porcessor
YUV
SCALE IC
U46
(PAGE5)
YCBCR
MULTIPLEX
SWITCH
U34
SDRAM
(PAGE6)
AD
Converter
U29
C711/C713
U23
(PAGE8)
(PAGE11)
LVDS
TRANSMITTER
(PAGE14)
(PAGE7)
YCBCR/YPBPR
R,G,B
Y1/CB/CR
Y1/PB/PR
MULTIPLEX
SWITCH
MULTIPLEX
SWITCH
YCBCR/YPBPR
SIL161 DVI
U32
9161A(PLL)
(PAGE10)
IC2
(PAGE13)
IC3
TA1276
Color Space
Conveter
DVI IN
U43
CPU
U4
MULTIPLEX
SWITCH
Y2/CB/CR
Clock
Generator
(PAGE9)
IC7
Y2/PB/PR
RS232
(PAGE1)
5-3
P
A
N
E
L
BLOCK DIAGRAM
VER1.0
Image board Power Block Diagram
SB5V (USB5V, SB5V_M , SB5V_IO, SB5V_CPU)
SB5V_V
D43
SB5V_VO
R376
D2
D3
DVI_5V
+5VSB
+9VT
J14
1
2
3
4
5
6
+5V1
U63
V33SB
U13
USB3V
P5V (5V_OSD)
1
2
3
4
5
6
7
V33 (VDD33)
P9V (+9V)
J21
IC9
+24V
P24V
VCCPLL
L13
U61
VCCBF
L17
V33P
CON8009
1
2
3
4
5
6
7
8
9
VIP711
L15
U62
VDDM
5VDDA
U60
V33TMP (VDRAM )
U56
VCC3 (VCC3_M )
U52
VCCA3
U31
V33ADC
U28
V33PLL
U54
VADC3
5VDDM1
U58
V25_MP
U53
VCCA3_S
U55
VADC3_S
U57
VCC3_S (VCC3_M _S)
U59
V25_SP
A5V
J25
1
2
3
CON8011
1
2
3
4
5
6
7
8
9
10
11
12
13
REG_5V
5VDDD
+5VA
+9V
J15
1
2
3
4
REG_5V_S
+5VA
J25
1
2
3
5-4
A5V
P5V_COLOR
BLOCK DIAGRAM
VER1.0
PDP Sound Block Diagram
ICS2
M UT E
ICS1
LPF
S UB _ WOOFE R
OUT P UT
P AGE 2
FROM AV
S EL E CT OR
Q1/Q2
INP UT B UFFE R
ICR1
S RS S URROUND
P ROCES SOR
ICA1/ICA2
M UT E
AV_ OUT PUT
ICA3
FIXE D/VA RIBL E
OUT P UT
S EL E CT OR
Q8/Q9/Q11
M UT E
IC1
B BE & S OUND
P ROCES SOR
U1
BUFFER
A M P L IFIER
IC2
M AIN POWER
A M P L IFIER
P AGE 1
DPWB11372-1G-S-
5-5
INSIDE
S PE AK ER
BLOCK DIAGRAM
VER1.0
Tuner Signal Block Diagram
9V
PO WER B LO CK
7 80 9
IC201
9 V_ T
JP2
NE555
IC241
SCL 2
FROM IM A GE BO ARD CPU
SDA2
5V
7 80 5
IC202
2 SC24 8 2
Q2 4 1
3 1V
T V _ L O UT
UP C 1 85 4 ACT
T U2 01 RF M ODUL E
T U2 01 P IF M O DULE AUDIO O UT
MTS
IC203
T V _ R O UT
VIDE O O UT
DPWB11372-1G-T-
5-6
TROUBLE SHOOTING GUIDES
VER1.0
NO POWER
SET POWER ON
AC Master Power
Switch Board
DPWB11398-1G---
Y
Power Input Module
LJ92-00579A
N
Replace Power
Input Module
LJ92-00579A
Y
OK
Panel Power Supply
LJ44-00025A
N
Replace Panel
Power Supply
LJ44-00025A
OK
6-1
TROUBLE SHOOTING GUIDES
VER1.0
No picture
No picture
AV Module Board
(with Tuner)
DPWB11372-1G-T-
N
Replace
AV Module Board
(with Tuner)
DPWB11372-1G-T-
Y
Image Board
OK
N
DPWB11393-1G--S
Replace
Image Board
DPWB11393-1G--S
Y
PDP Panel Module
VVEPP42SD001F--
OK
N
Replace
PDP Panel Module
VVEPP42SD001F--
OK
6-2
TROUBLE SHOOTING GUIDES
VER1.0
Vertical Line failure
Vertical Line
Interface Board-Z
N
LJ92-00568B
Y
Replace
Interface Board-Z
LJ92-00568B
OK
PDP Panel Module
Aeesmbly
N
VVEPP42SD001F--
Replace
PDP Panel Module
Aeesmbly
VVEPP42SD001F--
OK
6-3
TROUBLE SHOOTING GUIDES
VER1.0
Horizontal Line Failure
Horizontal Line
Interface Board-Y
LJ92-00569B
N
Replace Interface
Board-Y
LJ92-00569B
Y
OK
Y Amp Board-Upper
LJ92-00570A
Y Amp Board-Lower
LJ92-00571A
Replace
Y Amp Board- Upper
LJ92-00570A
Y Amp Board- Lower
LJ92-00571A
Y
OK
PDP Panel Module
Assembly
N
VVEPP42SD001F--
Replace
PDP Panel Assembly
VVEPP42SD001F--
OK
6-4
TROUBLE SHOOTING GUIDES
VER1.0
NO Remote Control
SET POWER ON
Remote Control
N
Replace
Battery
Replace
BRC-
Y
OK
Front Button
Control Board
DPWB11372-1G-K-
N
Replace Front
Button Control
Board
DPWB11372-1G-K-
Y
OK
Image Board
DPWB11393-1G--S
N
Replace Image
Board
DPWB11393-1G--S
OK
6-5
OK
TROUBLE SHOOTING GUIDES
VER1.0
Front Button Failure
SET POWER ON
Front Button
Control Board
DPWB11372-1G-K-
N
Replace Front Button
Control Board
DPWB11372-1G-K-
Y
OK
Image Board
DPWB11393-1G--S
N
Replace
Image Board
DPWB11393-1G--S
OK
6-6
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
IMAGE BOARD ASS'Y
DPWB11393-1G--S
7-1
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
AC MASTER POWER SWITCH B/D ASS'Y
DPWB11398-1G---
7-2
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
AUDIO AMPLIFIER BOARD ASS'Y
DPWB11372-1G-S-
7-3
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
FRONT BUTTON CONTROL BOARD ASS'Y
DPWB11372-1G-K-
7-4
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
AV MODULE BOARD ASS'Y
DPWB11372-1G-T-
7-5
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
INTERFACE BOARD- Y A’SSY
LJ92-00569B
7-6
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
LOGIC BOARD ASS'Y
LJ92-00573
7-7
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
PANEL POWER SUPPLY ASS'Y
LJ44-00025A
7-8
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
POWER INPUT MODULE ASS'Y
LJ92-00579A
7-9
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
INTERFACE BOARD- X ASS'Y
LJ92-00568B
7-10
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
LOGIC E-BUFFER ASS'Y
LJ92-00581A
7-11
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
Y AMP BOARD-UPPER ASS'Y
LJ92-00570A
7-12
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
Y AMP BOARD-LOWER ASS'Y
LJ92-00571A
7-13
P.C. BOARD TOP VIEW
VER1.0
MODULE NAME
PARTS NO.
LOGIC F-BUFFER ASS'Y
LJ92-00582A
7-14
P.C. BOARD TOP VIEW
MODULE NAME
PARTS NO.
PDP PANEL MODULE ASS'Y
VVEPP42SD001F--
7-15
ELECTRONIC MODULES LIST
VER1.0
Model Name: VPW425
No.
Module
Supplier Supplier's
Designator / Part #
1 Image Board
Sampo
2 AC Master Power Switch Sampo
Board
3 Audio Amplifier Board Sampo
4 Front Button Control
Sampo
Board
5 AV Module Board (with Sampo
tuner)
6 Interface Board- Y
Samsung
7 Logic Board
Samsung
8 Panel Power Supply
Samsung
9 Power Input Module
Samsung
10 Interface Board- X
Samsung
11 Logic E- Buffer
Samsung
12 Y Amp Board- Upper
Samsung
13 Y Amp Board- Lower
Samsung
14 Logic F- Buffer
Samsung
15 PDP Panel Module
Samsung
DPWB11393-1G--S
DPWB11398-1G---
Quantit Sub-Con Name
y Per
Final
Assemb
ly
1
1
DPWB11372-1G-SDPWB11372-1G-K-
1
1
DPWB11372-1G-T-
1
LJ92-00569B
LJ92-00573A
LJ44-00025A
LJ92-00579A
LJ92-00568B
LJ92-00581A
LJ92-00570A
LJ92-00571A
LJ92-00582A
1
1
1
1
1
1
1
1
1
1
VVEPP42SD001F--
8-01
Sub-Con Location Projected Projected Curren
MTBF
AFR
t
Revisio
n Level
PACKING LIST
VER1.0
9-01