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Panasonic Manuals
TV
TH-42PV70L
Service manual
P-Board Block Diagram - Panasonic TH-42PV70L Service Manual
Plasma television
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Contents
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Table of Contents
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15.3. P-Board Block Diagram
P
POWER SUPPLY
LINE FILTER
L404
L405
D401
RECTIFIER
-
+
L403
TO
AC CORD
IC411
F401
P9
250V 8A
ERROR DET
4
LIVE
Vref
1
F402
250V 8A
2
3
NEUTRAL
1
A
K
F403
T630mA
R413
250V
Q434
R435
R427
L410
LINE
R420
FILTER
R415
R410
D404
R407
-
+
D435
RECTIFIER
IC409
IPD
Source
8
1
Source
Source
7
2
Source
Source
5
3
Drain
D416
Control
4
Q411
TH-42PV70L
P-Board Block Diagram
T401
8
7
6
5
4
3
2
1
Q404,Q406
R405,D415
9
10
11
12 13
14
15
16
OVER
VOLTAGE
PROTECTION
(490V
0.1
SW
PR402
Q401
R441
R472
R442
R445
R475
R479
8
7
6
5
R447
R480
IC406
VCC
R470
27.4kx6
MOS
CURR
340kx6
DRIVE
DET
SW
PFC
Q402
CURR
COMP
D407
1
2
3
4
R455
Q420
R444
Q407
1
2
R443
Q422
PFC
3
D418
HOT
RL403
RL402
R411
RL401
ON
D522
D523
T410
RCC CONV.
(100KHz)
15
9
14
STB_12V
D511
13
STB5V
7
12
5
11
4
D509
D441
7
2
10
5V
MAIN
RUSH
RELAY
RELAY
ON
ON
IC408
4
1
Q501
PHOTO
COUPLER
Q502
3
2
Q410
IC504
ERROR DET
STB5V ON/OFF
3
2
1
ECO
4
1
IC412
PHOTO
3
2
COUPLER
HOT
COLD
HOT
COLD
D540
11
10
PR401
D417
395V
F_5A_250V
12
9
D539
Q412
D419
3
OSC
C446
6
D420
4
Q408
OSC
7
8
Q413
OSC
2
80V)
15
5
Q409
16
1
OSC
T404
9
10
5
6
T402
C469
RESONANCE
CONVERTER
4
3
2
(120-145KHz)
12
13
15
16
IC520
BUFF
Q564
+
POWER
BUFF
-
Q565
CONTROL
(Vlow)
4
2
6
Q566
D602
Q536
PR601
Q507
10
7
COLD
Q540
T601
180k
x4
2
3
Q510
1
4
IC403
IC511
PHOTO
COUPLER
2
3
IC513
(AC DET)
Vda DET
RESET
4
1
IC401
PHOTO
3
2
COUPLER
(PFC_ON/OFF)
4
1
4
IC507
D701
PHOTO
3
2
3
COUPLER
IC501
POWER MCU
PANEL_
1
24
VDD
MAIN_ON
AC_DET/
2
VSS
23
F STB H
2
IC502
3
XIN
V LOW DET
22
1
AC_P_DET
4
XOUT
21
RESET
(FAIL:H)
X501
4NHz
AC_GO_L
20
GO:L
6
RESET
VSUS DET
19
ON:H
ON:L
7
18
STB PS
F_15V_ON/OFF
8
Vdat_GO_L
17
SOS4_PS
ON:L
ON:L
STB 5
9
PFC ON/OFF
16
ON/OFF
ON:H
ON:H
10
LOW 15
V LOW ON/OFF
15
ON:L
VSUS
11
MAIN RELAY(H)
14
ON/OFF
12
RUSH RELAY(H)
ALL OFF
13
Q537
Q521
Q569
59
IC512
Vdat OVER VOLTAGE
DETECTION(100V
25V)
ERROR DET
Q527
(Vda)
Vda75V
D531
D544
D545
73V
K
3
1
C555
R670
A
2
1
R665
D569
D506
R676
R674
R631
Vdat
D570
D536
15V
D571
Q520
Q517
D572
D549
R579
D579
PR509
D535
D521
Q509
VlOW DET
1
R661
2
Vlow
BUFF
3
Q541
IC508
R649
R650
Vlow
Q508
POWER
VlOW DET
5V OUT
CIRCUIT
DETECTION
(3V
1.0V)
Vsus 192V
IC509
VOLTAGE
R622
5
4
OUT
DETECTION
R648
(60V
40V)
Q530
R636
1
2
3
Q535
R626
Q525
K
Vref
3
1
R627
IC506
1
A
2
IC505
ERROR DET
R628
PHOTO
(Vsus)
2
Vsus
COUPLER
12V ON/OFF
Q554
Q563
Q553
POWER SOS
LED BLINKING : 4TIMES
IC510
PR505
DC-DC CONV.
2
OUT
Vcc
1
INV.
Q524
5
6
7
8
5
6
7
8
Q555
D
D
D
D
Q556
D
D
D
D
DC/DC CONV.
DC/DC CONV.
G
S
S
S
G
S
S
S
(15V)
(F STB 5V)
4
3
2
1
4
3
2
1
TH-42PV70L
P-Board Block Diagram
TH-42PV70L
TO
P12
SS12
1
Vdat
2
Vdat
4
+15V
2
8
STB12V
10
STB_PS
3
TO
P11
SS11
1
Vsus
3
GND
TO
P2
SC2
1
Vsus
3
GND
TO
P5
PA5
1
+15Vs(S)
2
+15Vc
3
+15Vs(S)
4
+15Vc
5
+15Vs(S)
10
STBY5V
12
F_STBY_ON
13
F_STB
15
F_STB
17
F_STB
16
ALL_OFF
18
AC_GOOD
20
+5Vc
NO
P6
USE
1
+15Vs(S)
2
+15Vs(S)
3
+15Vs(S)
7
F_STBY
8
F_STBY
9
F_STBY
NO
P7
USE
1
+15Vc
2
+15Vc
5
STBY5V
6
F_STBY_ON
8
ALL_OFF
9
AC_GOOD
10
+5Vc
TO
P25
D25
1
+15Vc
2
+15Vc
5
+5Vc
6
+5Vc
STBY5V
9
11
PANEL_MAIN_ON
12
SOS4_PS
13
VDATA_DET
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