Table of Contents
Advertisement
17.4. (B) Main Circuit
SCHEMATIC DIAGRAM - 3
: +B SIGNAL
MAIN CIRCUIT
: -B SIGNAL
SA-AK240GCP MAIN CIRCUIT
1/4
R2113
12K
R2213
12K
R2253
8.2K
R2153
8.2K
C2114
C2214
1
1
R2143
12K
R2112
R2212
3.3K
3.3K
R2243
12K
C2244
C2144
R2111
R2211
1
1
2.2K
2.2K
W2501
0
PB_L
14
PB_R
13
GND
12
REC_IN_L
11
REC_IN_R
10
TO
+B
9
DECK
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
C2121
3300P
C2221
3300P
R2121
3.3K
TUNER RCH
: FM/AM SIGNAL LINE
: TAPE RECORD SIGNAL LINE
: CD SIGNAL LINE
: TAPE PLAYBACK SIGNAL LINE
: MAIN SIGNAL LINE
R2161
4.7K
C2101
1
C2112 1
C2212 1
C2122 1
C2222 1
C2132 1
C2232 1
C2152 1
C2252 1
R2102
3.3K
R2104
3.9K
R2204
3.9K
C2201 1
R2202
3.3K
+15V
MIC
C2976
16V10
MOT_12V
P_GND
REC[59]
Q2978
B1GDCFJJ0047
REC:ON/OFF CONTROL SWITCH
SW5V
Q2980
Q2980
B1GDCFJJ0047
W2553
SUPPLY CONTROL SWITCH
0
(DECK MOTOR)
MTR[58]
DECK_H
R2674
47K
R2675
C2263
R2261
1
47K
R2301
15K
R2163
56K
56
55
54
53
52
51
50
49
48
47
46
45
44
43
IN-L1
1
L-OUT
42
2
IN-R1
NC
41
3
IN-L2
DATA
40
4
IN-R2
CLK
39
5
IN-L3
VCC
38
IC2803
6
IN-R3
R-OUT
37
C2401 0.22
C1BB00001121
7
IN-L4
POST-VM-R
36
C2402 0.22
AUDIO SOUND PROCESSOR
T-OUT-R
35
8
IN-R4
C2272 0.12
9
IN-L5
BASS-R2
34
C2271 0.15
10
IN-R5
BASS-R1
33
C2161 0.01
C2274 0.01
11
IN-L6
32
MID-R2
C2261 0.01
C2273 0.01
12
IN-R6
MID-R1
31
TRE-R
13
GND
30
C2581 16V100
14
REF-IN
NC
29
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
C2275
0
4.7K
100K
0.12
3900P
R2283
100K
C2509
C2283
16V33
0.047
63
B1ABCF000176
AGC CONTROL SWITCH
Q2311,Q2411
B1ABGC000005
MUTING SWITCH
R2311
C2311
1
470
R2312
Q2311
10K
R2355
C2342
270K
1
C2442
R2455
R2401
15K
270K
1
Q2411
R2412
10K
C2411
1
R2411
470
B1ABCF000176
AGC CONTROL SWITCH
C2583
16V100
R2273
R2271
D2583
C2588
Q2511
4.7K
15K
B0BC9R000008
0.1
B1GDCFJJ0047
MUTING CONTROL
C2585
R2585
C2584
R2510
220P
330K
220P
R2509
220
560
Q2511
R2347
1
R2511
R2512
100K
2.2K
C2511
50V2.2
R2584
R2586
330K
1.2K
N
W2546
0
W2526
0
SA-AK240GCP
W2511
0
R2701
1K
C2
C2
Q2142
R2702
1K
R23
56
R2145
R2146
1K
1K
R2314
C2312
0
1
4
3
2
C2704
R2313
470P
100K
IC2804
C0AABB0001
OP AMP
R2413
100K
R2414
C2412
5
6
7
0
1
C2413
47P
R2245
C2706
1K
50V1
R2706
3.3K
D2241
R2
R2246
Q2242
B0ACCK000005
3.
1K
R2
3.
R2247
C2245
R2248
100K
16V10
6.8K
R2342
R
W2513
W2531
33
Q2341,Q2441
0
0
B1ABGC000005
HEADPHONE MUTING
R2344
R
33
Q2341
R2346
3.3K
R2345
1.5K
R2357
100K
W2530
0
R2457
100K
R2445
R2446
1.5K
3.3K
Q2441
R2442
R
33
R2444
R
33
R2447
1
Advertisement
Table of Contents
