P-Board Block Diagram - Panasonic TH-42PV70AZ Service Manual

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-42PV70AZ/H/M/MR/MT
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 17
Vdat_GO_L 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
TH-42PV70AZ / TH-42PV70H / TH-42PV70M / TH-42PV70MR / TH-42PV70MT
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-42PV70AZ/H/M/MR/MT
P-Board Block Diagram
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