Panasonic TH-37PD25U-P Service Manual page 120

15.4. P-Board Block Diagram
TO PF9
NEUTRAL
LINE
TH-37/42PD25U/P
P-Board Block Diagram
L451
Q452
IC451
Q453
3 8
6
4
!
D451
POWER
FACTOR
CONTROL
P
Power Supply Board
HOT
!
COLD
RL401
TV ON/OFF
P9
NEUTRAL
1
LINE
4
!
RL403
RUSH ON/OFF
5V
!
RL402
IC551
Q451
SUSTAIN VOLTAGE CONTROL
Q454
4
Vin
START
REG
T.S.D
Q455
Q456
Q651
Q650
IC552
PROCESS VOLTAGE CONTROL
4
Vin
START
REG
T.S.D
!
D404
IC401
STANDBY
VOLTAGE
CONTROL
DRV.REG
Drain
=8.3V
Rg2
O.V.P
DRIVER
Rg1
LATCH
Source
OCP/FB
-
+
O.S.C
-
+
GND
Q457
IC550
DRV.REG
Drain
=8.3V 3
Rg2
O.V.P
DRIVER
Rg1
LATCH
OCP/FB
1
-
+
O.S.C
2
Source
-
+
GND
5
15V
3
2
1
17V
13.5V
380V
!
T501
10
3 9
7
2
6
1
4
5
70V
2
1
!
D565
!
T502
OUT
3 1
IN
1
2
2
3
4
7
8
9
HOT
!
D566
!
T401
8
7
6
4
3
2
1
!
D408
IC402
ERROR
DETECT
74