P-Board Block Diagram (37Inch) - Panasonic TH-37PX60U Service Manual

TH-37PX60U / TH-42PX60U

14.4. P-Board Block Diagram (37inch)

P POWER SUPPLY
L404 L405
D401
-
TO
AC CORD
P9
F401
LIVE 4
F402
1
NEUTRAL
R413
Q434
L410 R435
R427
R407
D404
- +
D435
RECTIFIER
IC409
DC POWER CONTROL
D596
Source
8
7 Source
5 Drain
D416
STANDBY POWER SAVE
TH-37PX60U
P-Board Block Diagram
D417
T401
D419
D420
1 2 3 6 7 8
RECTIFIER
Q404
Q406
+
R406
14 11 10
D415
SW
Q401
R441
8 7 6 5
IC406 VCC
R442
L403
MOS CURR
DET
SW DRIVE
POWER
Q402 R475
FACTOR
CURR
COMP
CORRECTOR
1 2 3 4
D407
Q420 Q422
Q407
R444
1
R455
R443
2
R497
PFC
Q418 Q421
3
PFC DET
IC411 R496 R495 R494
PFC OUT
DETECTION
SW (350V 40V)
ERROR DET
Q568
L:ON
IC402
3
3
ERROR DET
1 2
1 2
RL403
R410
3 4
D430
2 1
MAIN
IC410 ON
RL402
PHOTO
COUPLER Q502
RUSH
ON
T410
15
9 12V
17
D511
16
D563
7
14
STB5V
5 13
4 12
(IPD) D509
IC504
7 11
D441
10
2 ERROR DET
Vdd
1
5V
3
FB 2
Vcs 4 2 1
4 1 IC408
PHOTO
COUPLER
3 2
STB_PS(12V)
4 1
IC405
PHOTO
3 2
COUPLER
ECO
4 1
IC412
PHOTO
3 2
COUPLER
HOT COLD
HOT COLD
T404
14
PR401
F 5A 250V
9
13
Q412
395V
1
OSC
3
C446,
2
C447
Q408
OSC 7
15
R472 OVER Q413
VOLTAGE
OSC
PROTECTION
D531
R473 5
(490V 80V)
6
Q409
4
R465
OSC
1 2
5 6 9 10
C469
R464
T402 4 3 2
T407
15V OVER
6 5 4
VOLTAGE
PROTECTION
D418
(16V
D528
R458
12 D529
D530
13 6
IC520
15 4
SW
16 2
POWER
Q540
CONTROL
(Vlow)
12V DET
Q566
D602
HOT COLD Q538
D514
VSUS DET
178V
4 1
PFC DET IC505
(1.7A)
1 4
IC404
PHOTO
3 2 COUPLER
PHOTO
2 3
COUPLER
AC POWER Vsus POWER CURCUIT
1 4
IC403 Q507
PHOTO
2 3
COUPLER
9
8 7 5
VCC GD ZCD
RESET
5
INV VFF CS
4 1
IC401
1 3 4
PHOTO
3 2
COUPLER
IC509
R671
Csus
DC-DC
CONVERTER
Q501
1 24
VDD AC GOOD
D505
2 VSS F STB ON 23
2
IC502 3 XIN V LOW DET 22
1
4 21
XOUT AC P DET
RESET X501
4NHz TV ON/OFF 20
6 RESET VSUS DET 19
Q535
7 STB PS F_STB ON/OFF 18
STB5V DET 8 PFC DET PS SOS 17
ON:L
STB 5
9 PFC ON/OFF 16
ON/OFF
10 LOW 15 V LOW ON/OFF 15
VSUS
11 14
MAIN RELAY
ON/OFF
12 RUSH RELAY ALL OFF 13
BUFF
Q569
IC501
POWER SOS
POWER MCU LED BLINKING : 4TIMES
BUFF
Q521 Q563
Q537
STB5V ON/OFF
SW INV.
Q512 Q561
ECO ON/OFF
78
IC512
Vdat OVER VOLTAGE
DETECTION(100V 25V) ERROR DET
D539
Q527 (Vda)
D531
D542 D544 D545
K
73V
3
1
C555
R670
A
R676 2
D569
R674
D586 R665
D570 Vda
R631
D536 15V
Q520 Q517
D571
D572
R666
D549
D551
R579
R545
D579
2V)
D574
Q509
VlOW DET
D520
1
R661
2
BUFF BUFF Vlow
3
Q510
Q541
BUFF
Q564
R649
BUFF
Q565
R650
Vlow Q508
POWER
VlOW DET
CIRCUIT 5V OUT
DETECTION
(3V 1.0V)
PR601
Vsus 189V
R620
VOLTAGE
R526 R622
OVER
OUT
T601
6 VOLTAGE
DETECTION R648
DETECTION R589
(60V 40V)
(490V 80V) R527
R636
R590
4 3
R626
R621
R533
Q505
R656
R534
K
1
3
D585 R627
IC506
A
4 1
2
IC507
ERROR DET
R628
PHOTO
(Vsus)
3 2 COUPLER Vsus
Q551 Q554
VSUS ON/OFF
12V ON/OFF
D521
INV.
Q559
PR509
VSUS DET
Q553
Q525,Q530 INV.
INV.
Q524
D512
D513
ECO ON
INV.
Q558
Q557
INV.
IC510 D535
PR805
2 OUT Vcc 1
SWITCHING
REGULATOR
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 14V)
4 3 2 1 4 3 2 1
TH-37PX60U
P-Board Block Diagram
Vda75V
TO
P12
SS12
1 Vda
2 Vda
4
+15V
1
8 STB12V
2
10 STB_PS
3
TO
P23
SC23
1
+15V
2 +15V
TO
P5
PA5
1
+15Vc
2 +15Vc
4 +15Vc
6 +15Vs(S)
7
+15Vs(W)
8 +15Vs(W)
TO
P11
SS11
1 Vsus
3 GND
TO
P2
SC2
1 Vsus
3 GND
TO
P25
D25
1 +15Vc
2 +15Vc
7
+5Vc
9 +5Vc
STBY5V
10
H:ON
13 F_STBY_ON
H:ON
15 ECO_ON
17 PANEL_MAIN_ON
16 PS_SOS
18 ALL_OFF
19 AC_GOOD
TO
P10
PA10
1 F STB 14V
2
F STB 14V
3 F STB 14V