Panasonic SA-AK343P Simplified Service Manual page 6

SA-AK343P
Note: With reference to page 61~64 (section 18.3) of original service manual for SA-AK340P/PC-S. Below is the updates.
SCHEMATIC DIAGRAM - 3
: +B SIGNAL
MAIN CIRCUIT
: -B SIGNAL
SA-AK343P MAIN CIRCUIT
1/4
C2112
1
C2114
C2212
0
R2112
3.3K
C2252
1
C2214
R2111
2.2K
C2254 R2211
0 2.2K
W2501
0
PB_L
14
PB_R
13
GND
12
REC_IN_L
11
REC_IN_R
10
TO
+B
DECK 9
REC_H
CIRCUIT
8
(CN1001) ON
MO+B
7
SCHEMATIC
MO_GND
DIAGRAM-7 6
NC
5
DECK1_H
4
NC
3
MOTOR
2
NC
1
CN2803
R2121
3.3K
TUNER RCH
: FM/AM SIGNAL LINE : TAPE RECORD SIGNAL LINE : CD SIGNAL LINE
: MAIN SIGNAL LINE : TAPE PLAYBACK SIGNAL LINE
C2101
1
C2122 1
C2222 1
1
C2132 1
C2232 1
C2152
0 1
R2212
3.3K
C2154
0
R2102
3.3K
R2104 27K R2103 2.2K
R2204 27K
C2201 1
R2202
R2203
3.3K
2.2K
+15V
C2976
16V10 MOT_12V
P_GND
REC[59]
Q2978
B1GDCFJJ0047
REC:ON/OFF CONTROL SWITCH
SW5V
A_GND
Q2980
W2553
0
MTR[58]
DECK_H
R2674
47K
R2675
C2301 0.22
C2302 0.22
56 55 54 53 52 51 50 49 48 47 46 45 44 43
IN-L1
1 L-OUT
2 IN-R1 NC
3 IN-L2 DATA
4 IN-R2 CLK
VCC
5 IN-L3
IC2803
6 IN-R3 R-OUT
C1BB00001121
7 IN-L4 POST-VM-R
8 IN-R4 AUDIO SOUND PROCESSOR T-OUT-R
BASS-R2
9 IN-L5
10 IN-R5 BASS-R1
C2161 0.01
11 IN-L6 MID-R2
C2261 0.01
12 IN-R6 MID-R1
TRE-R
13 GND
C2581 16V100
14 REF-IN NC
W2506
0
15 16 17 18 19 20 21 22 23 24 25 26 27 28
C2582
16V100
W2503
0
W2520
0
W2577 R2193 R2194 C2194
0 4.7K 100K 0.15
R2283
100K
C2283
0.047
C2501 R2501 R2503
D2503
1 330K 2.7K
C2503 B0ADCC000002
1
Q2501
B1ABCF000176
LEVEL METER
CONTROL SWITCH
R2504
100
R2502
82K
R2505
0
Q2980
B1GDCFJJ0047
SUPPLY CONTROL SWITCH
(DECK MOTOR)
6
R2301
15K
C2311 R2311
1
42
41
R2312
40 10K
39
R2355
38
270K
37
C2401 0.22
36
R2455
C2402 0.22 R2401 15K
35
270K
C2272 0.15
34
C2271 0.15
33 R2412
10K
C2274 0.01
C2411
32
C2273 0.01 1
31
30
R2411
29
C2583
16V100
C2275 R2273 R2271 D2583 C2588
4.7K 4.7K
3300P B0BC9R000008 0.1
C2509
R2510 C2585 R2585 C2584
16V33
R2509 220 220P 330K 220P
560
Q2511
C2507
R2508
0.22
1K
R2511 R2512
2.2K 100K
C2511
R2586 50V2.2
R2584
1.2K
330K
N
W2546
0
W2526
0
W2511
0
R2701
1K
Q2142
B1ABCF000176
AGC CONTROL SWITCH R2702
1K
R2145 R2146
1K 1K
Q2311,Q2411
B1ABGC000005
MUTING SWITCH
R2314
C2312
470 0
1
Q2311
4
R2313
100K
C2342
1
C2704
W2514
C0AA
470P 0
C2442
1
R2413
100K
Q2411
R2414 5
C2412
0 1
C241
470
47P
R2245 C2706
1K 50V1
R2706
3.3K
R2246 D2241
Q2242
B0ACCK000005
1K
B1ABCF000176
AGC CONTROL SWITCH
R2247 C2245 R2248
100K 16V10 6.8K
Q2511
B1GDCFJJ0047
MUTING CONTROL
R2
W2513 W2531
0 0
R2
Q2341
R2347
R2346
1
3.3K
R2345
1.5K
R2357
100K
W2530
0
R2457
100K
R2445
R2446
1.5K
3.3K
Q2441
R2
Q2341,Q2441
B1ABGC000005
R2
HEADPHONE MUTING
R2447
1