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TH-37PWD8BK
Service manual
P-Board Block Diagram - Panasonic TH-37PWD8BK Service Manual
Progressive wide plasma display
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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15.3. P-Board Block Diagram
P
POWER SUPPLY
TO
AC CORD
P9
F402
L404
L405
LIVE
4
F401
NEWTRAL
1
D401
D404
D462
R903-R906
Q423
R928-R931
Q424,Q434.Q436
Q435
POWER SUPPLY
R455,R474
R479,R481
R483,R488
Q433,Q441
Q430,Q432
Q415
Q414
TH-37/42PWD8 SERIES
P-Board Block Diagram
D417
D419
D420
10
9
8
4
3
2
T401
Q404
Q406
L402
14
16
D415
Q401
8
7
6
5
VCC
IC406
MOS
CURR
DRIVE
DET
POWER
CURR
FACTOR
COMP
CONTROL
1
2
3
4
Q420
Q422
Q407
L403
Q418
Q421
R443
PFC DET
PFC
IC402
COMPARATOR(PFC)
5
1
4
3
Q417
Q4O3
5
1
4
3
RL403
RL402
IC411
COMPARATOR(AC IN)
MAIN ON/OFF
RUSH ON/OFF
T410
15
9
16
PR501
18
D511
Q511
Q512
D509
IC407
Q431
6
14
Q439
13
3
D510
1
2
10
D444
3
2
1
VIN
Isen
EXT
CE/SS
CLK
FB
VSS
IC504
4
1
4
5
7
8
IC408
ERROR DET
3
2
2
REG
1
Q440
4
1
Q438
IC412
3
2
4
1
IC409
3
2
HOT
COLD
HOT
COLD
13
14
PR401
T404
D531
395V
1
9
Q412
3
OSC
2
Q408
4
15
7
8
11
6
PR402
Q413
5
OSC
Q409
2
1
10
9
6
5
T402
C405
2
3
4
T407
6
5
4
D568
D530
16
15
13
12
IC520
BUFFER
2
4
6
HOT
COLD
1
4
IC404
2
3
Vsus POWER CURCIUT
IC509
1
4
Q507
IC403
Q506
DC-DC CONVERTER
2
3
9
6
8
7
5
VCC
GD
ZCD
INV
VFF
CB
5
4
4
1
1
3
4
IC401
3
2
IC505
4
R671
Vsus
3
IC501
POWER MCU
D567
1
24
VDD
ECO ON/OFF
2
VSS
F STB ON/OFF
23
3
IC502
3
XIN
V LOW DET
22
1
4
21
RESET
XOUT
AC P DET
X501
4NHz
TV ON/OFF
20
6
RESET
VSUS DET
19
D555
Q535
7
18
STB PS
STB ON/OFF
STB5V DET
8
PFC DET
PS SOS
17
Q501
F STB PC
9
PFC ON/OFF
16
ON/OFF
Q550
10
DISCHARGE
V LOW ON/OFF
15
INV.
INV.
11
MAIN RELAY
VSUS
14
Q551
ON/OFF
Q502
Q503
12
RUSH RELAY
ALL OFF
13
INV.
Q560
SW
Q565
Q567
Q564
Q562
INV.
65
D539
Q527
Vda 75V
D532
D542
D544
D545
2
1
D534
3
D536
IC512
ERROR DET
1
(Vda)
R665
2
Vda
3
DC15V
D535
PR509
DC12V
D521
Q516
Q510
1
Q509
R661
2
Vlow
VlOW DET
Q541
3
Q520,Q517
Q508
VlOW DET
Vlow POWER CURCIUT
PR601
Vsus 188V
T601
IC506
Q505
ERROR DET(Vsus)
3
3
REG
1
R628
Vsus
1
Q530
Q536
Vsus DET
SW
Q525
2
Q552
INV.
Q561
STB 5V
INV.
Q537
Q538
SW
STB 5V
Q559
INV.
Q557
INV.
Q544
PR503
ALLOFF SW
IC507
Q554
1
REG
5
Q553
+5V REG
SOS BLINKING TIMES
PS SOS
LED 5TIMES
F STB 14V
F STB 14V
Q518
Q519
SW
Q558
SW
IC503
2
1
ERROR DET
TH-37PWD8BK
TO
P12
SS12
1
Vda
2
+15V
5
STB12V
4
STB_PS
TO
P23
SC23
1
+15V
2
+15V
TO
P11
SS11
2
Vsus
3
Vsus
TO
P2
SC2
1
Vsus
2
Vsus
TO
P5
PB5
1
+12V
2
+12V
4
+15V
6
+12Vs
7
+12Vs
8
+12Vs
NO
P30
USE
1
+15V
4
+5V
5
FAN CONT
3
FAN SOS
TO
P25
D25
1
12V
2
12V
3
FAN CONT
7
+5V
+5V
9
STB5V
10
13
F STBY ON
14
FAN SOS
15
ECO_ON
17
PANEL MAIN ON
PS SOS
16
18
ALL OFF
TO
P10
PA10
1
F STB 14V
2
F STB 14V
3
F STB 14V
TH-37/42PWD8 SERIES
P-Board Block Diagram
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This manual is also suitable for:
Th-37pwd8ek
Th-37pwd8gs
Th-37pwd8uk
Th-42pwd8bk
Th-42pwd8bs
Th-42pwd8ek
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Th-42pwd8gk
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