Panasonic TH-37PD25U-P Service Manual page 127

C2303
16V
R2303
1u
100
+9V
R2301
100k
2402
A000073
L
C2304
16V
R2304
R 1u
100
GND
R2393 R2396
0 0
C2339
R2394
R2391
50V
6.8k 6.8k
10u
C2342
R2392 R2395
50V
27k 27k
10u
R2348
10k
3.2
0
309
0
601A0L
Q2305
3.2 R2375
2SD0601A0L
10k
0
Q2306
2SD0601A0L
0
0
R2376
0.6
22k
0
77
IC2301
C2331
25V
C1BA00000309
0.1u
C2301
16V
1u
0
28 HP IN
C2305 0 6dB
27
H/P
35V
STB SW
47u
11.6
26
LIPPLE L
FILTER
3.2
25
AMP
STB SW
SW REG.PART
0
24
NC
HLS
0
C2307
23
NC
50V
22u
2.7
22
ON TIME
0
21
NC
L
0
20
PRE GND
C2309
0
R2307 19
NC
50V
Thermal
1k
2.2u Pad
3.3
18
IN
NP
3.3
R2305 BEEP
17
2.2k
C2311 0
C2313
16
50V
50V POWER GND
6800p
2.2u
0
15
POWER GND
IC2302
C2332
25V
C1BA00000309
0.1u
0
28 HP IN
R2302
C2302 0 6dB
C2306
27
H/P
100k
16V
35V
STB SW
1u
47u
11.6
26
LIPPLE
R
FILTER
3.2
25
AMP
STB SW
0 SW REG.PART
24
NC
HLS
C2308 0
23
NC
50V
22u
2.7
22
ON TIME
0
21
NC
0
R 20
PRE GND
C2310 0
R2308 19
NC
50V
Thermal
1k
2.2u Pad
3.3
18 IN
NP
3.3
BEEP
17
R2306
2.2k
C2312 C2314 0
16
50V 50V POWER GND
6800p 2.2u
0
15
POWER GND
R2347
47k
PA-BOARD TXNPA1URSU (1/3)
!
R2346
47k
5
C2315
0
50V
HP OUT 1
0.047u
0.3
R2309
2
LIPPLE
C2317
10
FILTER
35V
1/2W
0
3 220u
NC
0
4
SW GND 12.6
R2333
3.5
0
0
SW 5
SW
B
3.3
3.5
SW 6
E
L2301
3.4
SW 7
220u
OUT
12.6
C2321
Vcc(SW) 8
50V
2.2u
12.6
9
Vcc
12.5 C2325
10
25V
C2323
470u
3.4 50V
11
1000p
1.7
OUT- 12
1.7
OUT+ 13
0 C2327
14
POWER GND 50V
0.1u
R2313
2.2
1/2W
C2316
0
50V
HP OUT 1
0.047u
0.3
R2310
2
LIPPLE
C2318
10
FILTER
35V
1/2W
0
3 220u
NC
0
4
SW GND
R2334
Q2302
3.5 0
SW 5
SW
2SD1266AQ0LB
B
3.4
SW 6
E
L2302
3.4
SW 7
220u
OUT
12.6
C2322
Vcc(SW) 8
50V
2.2u
12.6
9
Vcc
12.5
C2326
10
25V
C2324
470u
3.4
50V
11
1000p
1.7
OUT- 12
1.7
OUT+ 13
0 C2328
14
POWER GND 50V
0.1u
R2314
2.2
1/2W
6
+12Vs
R2339
3.9k
C2338
16V
100u
+
L2303
R2331
0 EXCELDR35V
Q2301
2SD1266AQ0LB
C2333
25V
D2301
470u
B0JCME000025
R2311
2.2
1/2W
C2329
50V
0.1u
R2315
2.2
1/2W
C2337
16V
100u
+
L2304
R2332
0 EXCELDR35V
C2334
25V
D2302
470u
B0JCME000025
R2312
1/2W
2.2
C2330
50V
0.1u
R2316
2.2
1/2W
R2397
0
R2399
0
TH-37/42PD25U/P
PA-Board (1 of 3) Schematic Diagram
7
1
2
1.3
HP_R
6
0
GND
5
1.3
HP_L
4
0
GND
3
0
HP_SUB
2
0
GND
1
TO
PA9
K-BOARD
(K9)
TO SPEAKER
(SP-R & SP-L)
PA3
1.7 1
SP_R+
1.7 2
SP_R-
1.7 3
SP_L+
1.7 4
SP_L-
8