Panasonic TH-42PA25U-P Service Manual page 315

1
2
3
*R2301
100k
*R2303
100
+9V
*C2303
16V
C2339 1u
50V
C2401
10u
50V
0.01u
R2401
C2417 Q2402
10k
16V 2SD0601A0L
4.7u
R2405
R2403
560
L AMP
10k
*A1-A1
TWE3201110YY R2307
4
270
R2305
1.2k
5
R2402
10k
C2422 Q2403
R AMP
16V 2SD0601A0L
4.7u
R2406
560
R2404
10k R2308
270
*R2304
*R2302
R2306
100
100k
1.2k
*C2304
16V
1u
R2393 *R2396
0
0
AUDIO MUTE
*R2394
R2391
10k
10k
Q2312
2SD0601A0L Q2311
2SD0601A0L
*C2344
C2342
16V
50V
R2389
220u
560 10u
R2390
1k
R2392
*R2395
22k
22k
R2387
R2386 R2398
560 1k
1k
C2352
Q2309
16V
Q2310
100u
2SD0601A0L
2SD0601A0L
SP MUTE
AUDIO MUTE
6
7
8
9
PA-BOARD TXNPA1QCSU(2/3)
TH-42PA20U
PA-Board(2of3)Schematic Diagram
8 9
+12Vs
IC2301
C1BA00000309
*C2331
25V
*C2315
0.1u
SP AMP
50V
0.047u
28 HP IN HP OUT 1 *R2309
10
*C2301 1/2W
6dB Q2301
27 H/P LIPPLE 2
16V
STB SW FILTER *C2317
1u 2SD1266AQ0LB L2303
35V
26 LIPPLE 3
NC
FILTER L 220u
SP ON/OFF
C2305
35V 47u
25 AMP 4
STB SW SW GND
R2319
SW REG.PART
SW 0
24 5 R2317 *L2303
NC SW
HLS B 0
B0JAME000062
SW
23 6
NC
E
L2301
SW
22 ON TIME 7
220uH
OUT
C2307 Vcc(SW) C2321
21 NC 8
50V 50V
D2301 C2333
4.7u
2.2u
B0JCME000025 25V
20 PRE GND 9
Vcc
470u
C2323
C2325 R2311
C2309
1000p
19 NC 10 25V 2.2
16V
Thermal
50V 470u 1/2W
2.2u Pad
18 IN 11
BEEP
OUT-
17 12
C2311
16 OUT+ 13
50V
POWER GND
6800p
C2327 C2329
15 14
50V 50V
POWER GND POWER GND
C2313
0.1u 0.1u
50V
2.2u R2313 R2315
2.2 1/2W
1/2W
2.2
IC2302
C1BA00000309 *C2316
*C2332
50V
25V
0.047u
0.1u SP AMP
*R2310
10
28 HP IN HP OUT 1 1/2W
*C2302 6dB
Q2302
27 H/P LIPPLE 2
16V 1u
STB SW FILTER
L2304
*C2318 2SD1266AQ0LB
C2306
26 LIPPLE 3 35V
35V R NC
FILTER SP ON/OFF
220u
47u
25 AMP 4
STB SW SW GND
SW REG.PART
SW R2318 *L2304
24 NC 5
SW
HLS B 0 B0JAME000062
R2320 0
SW
23 NC 6
E
L2302
SW
22 ON TIME 7 220uH
OUT
C2308 Vcc(SW) C2322
21 NC 8
D2302
50V 2.2u C2334
B0JCME000025
4.7u
50V 25V
20 PRE GND 9
Vcc
470u
C2324
C2310
C2326 R2312
1000p
16V 19 NC 10
25V 2.2
2.2u Thermal 50V
470u 1/2W
Pad
18 IN 11
BEEP
17 OUT- 12
C2312
16 OUT+ 13
50V
POWER GND
6800p C2328 C2330
15 14 50V 50V
POWER GND POWER GND
C2314 0.1u 0.1u
50V
R2314 R2316
2.2u
2.2 2.2
1/2W 1/2W
10 11
*JS7528
*JS7525
TO
P-BOARD
*PA7
(P7)
1
+15Vs
2
+15Vs
3
GNDs
4
GNDs
L7504
G0C101K00023
*C2338
16V
100u
*C2337
16V
100u
HP-R
6
*R2397
0
GND
5
HP-L
4
*R2399
R7588
0
GND
3 0
HP-SUB
2
GND
1
TO
*PA9
K-BOARD
(K9) L7507
G0C101K00023
TO
SPEAKER
PA3
(SP-R & SP-L)
1
SP_R+
2
SP_R-
3
SP-L+
4
SP_L-
Q7543 Q7541
2SB0709A0L 2SB0709A0L
R7543
ERROR DET ERROR DET
1k
R7541
2.2k
R7539
2.2k
R7525
D7541
4.7k MA2J11100L
R7540
4.7k
D7542
C7541
MA2J11100L
0.1u
Q7504
UNR221400L D7544
MA2J11100L
ERROR DET
D7545
MA2J11100L
Q7544
2SD0601A0L
ERROR DET
12 13
*R7529
0
IC7502
C0DAAZG00006
SI-8015JF
SUB 9.2V
C7536
16V
R7503 0.47u
806
1% Q7501
R7504 TPB7502
C7505 L7505 3.92k
B1DHDD000013
100u 1% SUB9V2
25V
470u
L7506
C7506 C7570 33u C7509
25V 50V 50V
470u 0.01u 10u R7505
22k
D7504
D7505
MA2Q73700L
MAZ21200A0LS
R7506
TV ON/OFF
2.2k
Q7502
UNR221400L
TV ON/OFF
IC7503
C0DAAZG00006
SI-8015JF
SUB 5V
C7537
16V
R7507 0.47u
806 R7508
1%
1.87k
1% TPB7503
L7508
C7511
100u SUB5V
25V
470u
C7512 C7513 L7509 C7532
25V 50V 33u D7508 16V
470u 0.01u MAZ20680A0LS 330u
D7507
MA2Q73700L
Q7542
2SB0709A0L
ERROR DET
*R7547
1k
R7545
R7544 C7542
2.2k R7548
2.2k 16V
1% 2.2k
0.1u
R7546
*R7559
D7549
R7532 2.2k
8.2k
1% MA2J11100L
470 1%
*R7533 D7547 R7542
C7543
470 MA2J11100L 470
16V
0.1u
R7535
220
*D7539
R7536
MAZ30620HL
470
D7540
MAZ30390HL
D7537
MA2J11100L
R7537
10k
R7526 R7527
D7538
4.7k 4.7k
MA2J11100L
R7538
10k
TH-42PA20U
PA-Board(2of3)Schematic Diagram
14
11
12
13
*C7531
16V
470u
TPB7508
MAIN9V
14
15
C7544
16V
0.1u
16
17
D7546
MA3X152E0L
18
R7549 19
100k
20
21
15