Panasonic TH-42PA25U/P, Service Manual

Page: 128 / 319

14.3. PF and P-Board Block Diagram
+
+
+
+
+
+
+
+
+
5V
SUSTAIN VOLTAGE CONTROL
D565
Vsus
TO SS12
P
Q401
P25
T501
+
Power Supply Board
Q403
2
10
4
5
Q402
13
9
3
1
1
2
5V
RUSH ON/OFF
2
D566
D404
P23
TVON/OFF
2
IC402
1
1
P5
2
5
2
START
Vin
T502
18
REG
17V
RL403
T.S.D
12V
3
5V
8
STB5V
6
DR15V
+12Vs
+
4
DR15V
4
IC557
12V
3
AVR 5V
NEUTRAL
1
3
TV ON/OFF
KILL SOS
Vin
DRIVER
OCP/FB
PS SOS
Source
ALL OFF1
GND
D408
Drain
2
11
10
HOT
O.S.C
VDA
9
4
+
DR15V
7
-
5
STB PS
-
8
3
AVR 5V
8
70V
4
7
15
380V
4
Rg2
11
Rg1
P7
DRIVER
Q404
2
15
1
4
10
1
IC403
P12
TO D25
2
RUSH ON/OFF
TO D27
REGENERATIVE
RL401
4
TV ON/OFF
9
CONTROL
Q555
IC555
1
IC553
14
M POWER
Q557
Q552,3,4
RUSH ON/OFF
20
1
P2
7
Q455
2
STB 5V
IC554
2
2
1
13.5V
Q456
6
1
DRV.REG
IC552
Q651
5
1
5V
Q457
12
=8.3V
Rg2
PROCESS VOLTAGE CONTROL
Q650
Vda
LATCH
Q452
START
Rg1
O.V.P
REG
Q453
RL402
OCP/FB
DRV.REG
IC558
T.S.D
OUT
Source
TO SS11
8
GND
17
Drain
16
3
5V
18
Q454
1
DR15V
VSUS
Q451
Q558
11
2
VSUS
L451
DR15V
7
8
FAN SOS
14
12V
12
12V
FAN SOS
O.S.C
6
+
5V
12V
COLD
3
-
15Vs
-
+12Vs
13
P27
12
+15Vs
2
15
=8.3V
+15Vs
3
T401
14
LATCH
HOT
15V
1
2
O.V.P
IN
1
3
1
4
2
P9
3
1
P10
4
2
3
3
VSUS
1
TO SC2
VSUS
IC401
TO SC23
3
2
7
LINE
P11
6
3
2
1 3
1
19
7V
1
2
2
17
12V
IC550
3
15V
COLD
1
190V
D451
IC451
4
IC551
LIVE CIRCUIT
2
LINE
N
LINE
NEUTRAL
AC CORD
PF
Line Filter Board
LINE
LF904
L.F L.F L.F
4
PF2
1
1
PF1
4
LF909 LF915
F900
F901
N
1
1 8
10 3 3 4 3 4
2 9
CONTROL
STANDBY
VOLTAGE
DETECT
ERROR
DETECT
ERROR
DETECT
ERROR
DETECT
ERROR
POWER
FACTOR
CONTROL
HOT
TH-42PA20U
PF and P-Board Block Diagram TH-42PA20U
PF and P-Board Block Diagram
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TO PA7
TO PA5
57