Panasonic TH-42PX20U-P Service Manual page 211

14.13. PA-Board (1 of 3) Schematic Diagram
TO
P-BOARD
(P5)
12V
12V
A
5V
STB5V
GND
GND
+12Vs
+12Vs
GNDs
GNDs
DR15V
B
TO
DG-BOARD
(DG6)
C L_IN
GND
R_IN
GND
NC
GND
SUBMONO
GND
NC
SUBMUTE
(AMUTE)
GND
SCL1
SDA1
GND
SP_MUTE
STB5V
D
RESET
POFF_DEF
MAIN_DEF
E
F
TH-42PX20U-P
PA-BOARD (1 of 3) Schematic Diagram
1
PA-BOARD TXNPA1QKSU (1/3)
PA5
!
1
2
3
4
5
6
C2381
50V
7
10u
8
JS2107
9
JS2106
10
11
SCL1
SDA1
PA6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2
IC2304
AVR 9V
AN7709SP-E1
+9V
NR14V JS2303
OUT 3
1
IN
L2306
C2413 C2414
ELJPA100KF
50V COMMON 16V
47u 2 47u
IC2102
AVR 12V
AN7712SP-E1
+12V
OUT 3
1
NR14V IN
C2112
C2113
50V COMMON
16V
47u 2
47u
MUTE CCT.
STB5V
Q2303
R2372
2SD0601A0L
22k
RESET
R2373
5.6k
Q2304
2SD0601A0L
R2374
100k
POFF-DEF
JS2304
MAIN_DEF
3
+9V
R2406 22
SCL1
SDA1
R2405
22
C2429
C2428
50V
16V
100u 0.01u
R2401
R2427
5.6k 100
L-IN
NP
C2403
R2403 C2401
50V 50V
22k
4.7u
1800p
R2402
R2428
5.6k
R-IN
100
NP
C2404
R2404 C2402
50V
22k 50V
4.7u
1800p
+9V
Q2307
2SA207700L
R2379
R2380
47k
22k
R2494
R2382
820
1/2W 47k
Q2308 C2382
R2383
R2371
16V
100k
2SD0601A0L 180k
100u
R2377
470
D2311
MA3X152K0L
R2378
100k
4
C2408
R2408
33k
50V
4.7u
C
IC2401
C1BB00000800
C2412
50V
R2409
0.01u
4.7k
C2407
50V
5600p
MONOMUTE
R2384
C2358
50V 100k
0.01u
C
+
IN
Q2315
2SC584500L
5
75