Panasonic TH-42PA25U-P Service Manual page 314

PA-BOARD TXNPA1QCSU(1/3)
A
B
TO
DG-BOARD
PA6
(DG6)
1
L_IN
2
GND
3
R_IN
4
GND
5
NC
6
GND
7
SUBMONO
8
GND
C
9
SUBVOL
10
SUBMUTE
11
(AMUTE)
12
GND
13
SCL1
14
SDA1
15
GND
16
SP_MUTE
17
STB5V
18
RESET
19
POFF_DEF
20
MAIN_DEF
D
E
TH-42PA20U
PA-Board(1of3)Schematic Diagram
1
R2481
15k
R2438 Q2408
100
2SD0601A0L
C2442 L AMP
16V
0.22u
R2457 R2480
33k 1k
C2480
R2482
16V
15k
0.22u
R2464
100
R2484
33k
2 3
TO
P-BOARD PA5
(P5)
1
12V
2
12V
3
5V
4
STB5V
5
GND
6
GND
7
+12Vs
8
+12Vs
9
GNDs
10
GNDs
11
DR15V
+9V
C2484
50V
0.01u
100Hz LPF
C2431 C2429
Q2406 50V 16V
0.01u 100u
2SD0601A0L
R2439 R2450
56k 56k
C2423
C2426
50V 50V
0.01u 0.015u
R2434
4.7k
R2431
12k
C2419 R2448
16V 10u 1k
C2427
R2440
16V
0
10u
R2445
0
Q2410
R2441
2SD0601A0L 12k
R AMP
C2440
16V
R2471 R2461
4.7u 100
1.8k
R2470
R2483
1k 4.7k
4 5
IC2304
JS2107
AN7709SP-E1
JS2106
*JS2301
+12Vs
OUT 3
1
IN
L2306
ELJPA100KF
C2381
C2413
50V COMMON
50V C2414
10u 2
47u 16V
47u
B0JCME000025
R2473
1.8k
R2472
R2453
4.7k
10k
C2441
16V
C2433
R2456 C2436
4.7u *JS2308
50V 10k 16V
0.039u
1u
R2462 C2434
100
50V
0.022u
R2452
47k
*JS2307
C2437 C2435
50V
16V
100u 0.01u
IC2401
C1BA00000302
AUDIO AMP
R2460
18k
1%
+9V
R2463
15k
1%
C2466 C2467
R2348
16V 16V
10k
1u 1u
R2347
12k
Q2306
2SD0601A0L
R2346 POWER ON MUTE
12k
STB5V
SCL1
SDA1
Q2303
2SD0601A0L
R2372
RESET
22k
RESET
Q2304 R2494
820
2SD0601A0L 1/2W
R2373
RESET
5.6k
R2371
180k
R2377
D2313 R2374
470
MA3X152K0L 100k
D2311
MA3X152K0L
Q2308
2SD0601A0L
D2310
R2378
MA3X152K0L
100k
MAIN DEF
POFF-DEF
JS2304
MAIN_DEF
6
1
2
AVR 9V
+9V
3
*D2316
+9V
4
5
MUTE
R2375
10k Q2305
2SD0601A0L
POWER ON MUTE
R2376
22k
6
7
8
STB5V
9
C2382
16V
100u
TH-42PA20U
PA-Board(1of3)Schematic Diagram
7 8