17.4. (B) Main Circuit
N
C2503
1
R2508
1K
MIC
C2144
1
C2112 1
C2212 1
C2122 1
C2222 1
C2252 1
C2152 1
C2232 1
C2132 1
R2
3.
R2
3.
R2212
3.3K
R21
12
3.3K
1
2
3
4
5
6
7
8
15 16 17 18 19 20 21 22 23
35
36
37
38
39
40
41
42
48
49
50
51
52
53
54
55
56
9
34
24
47
10
33
25
46
11
32
12
31
26
45
27
44
13
30
14
29
28
43
IC2804
C0AABB0001
OP AMP
C2976
16V10
D2191
D2583
B0BC9R000008
PB_L
PB_R
GND
REC_IN_L
REC_IN_R
+B
1
2
3
4
5
6
14
12
10
8
7
9
11
13
C2583
16V100
C2509
16V33
R2509
560
REC_H
MO+B
MO_GND
NC
DECK1_H
NC
MOTOR
NC
R2311
470
R2312
10K
R2412
10K
R2355
270K
C2442
1
C2342
10
C2312
1
Q2411
Q2311
R2455
270K
C2311
1
R2193
4.7K
R2283
100K
C2283
0.047
R2194
100K
C2194
0.1
C2275
3300P
C2588
0.1
C2585
220P
R2585
330K
R2510
220
C2584
220P
R2512
100K
R2511
2.2K
C2511
50V2.2
R2414
0
R2246
1K
D2241
B0ACCK000005
C2411
1
C2313 47P
C2413
47P
C2414 10P
C2314 10P
C2706
50V1
R2415 56K
R2706
3.3K
C2412
1
R2586
1.2K
R2584
330K
R2587
1.2K
R2102
3.3K
R2202
3.3K
MUTE_A
ASP_DA
+15V
ASP_CLK
SW15V
+15V
SW5V
MOT_12V
P_GND
-9V
A_GND
HP_R
HP_L
REC[59]
MTR[58]
DECK_H
R2675
R2248
6.8K
2
3
4
7
6
5
Q2341
Q2441
R2345
1.5K
R2445
1.5K
R2357
100K
R2457
100K
C2344 0.47
C2444 0.47
R2447
1
R2446
3.3K
R2346
3.3K
R2347
1
R
R
R2442
0
R2444
0
R
R
R2342
0
R2344
0
Q2511
Q2980
R2173
4.7K
R2172
6.8K
R2273
4.7K
R2271
6.8K
CN2803
MAIN CIRCUIT
SA-AK640PL MAIN CIRCUIT
SCHEMATIC DIAGRAM - 3
: +B SIGNAL
: -B SIGNAL
TO
DECK
CIRCUIT
(CN1001) ON
SCHEMATIC
DIAGRAM-7
R2211
2.2K
R2111
2.2K
R2104
27K
R2204
27K
R2674
47K
R2673
47K
R2672
10K
R2671
10K
C2191
50V4.7
C2282
1
C2281
1
B0ACCK000005
R2222
3.3K
R2122
3.3K
C2121
3300P
C2221
3300P
R2121
3.3K
R2221
3.3K
TUNER RCH
IN-L1
IN-R1
IN-R2
IN-R3
IN-R4
IN-R5
IN-R6
GND
REF-IN
REF-OUT
REC_L
PRE-VIN-R
HB-MIX-IN
HB-MIX-OUT
HB-FL
T-OUT
HB-A
TT
-IN
HB-A
TT
-OUT
HB-LPF-IN
HB-LPF-OUT
NC
NC
TRE-R
MID-R1
MID-R2
BASS-R2
T-OUT-R
R-OUT
VCC
CLK
DATA
NC
L-OUT
POST
-VM-L
T-OUT
-L
BASS-L2
BASS-L1
MID-L2
MID-L1
TRE-L
SUR2
SUR1
REC-L
SV_OUT
-L
OP-OUT
OP-IN
PRE-VIN-L
POST-VM-R
BASS-R1
HARMIN
HARMOUT
GV
-OUT
-R
IN-L2
IN-L3
IN-L4
IN-L5
IN-L6
C2214
1
C2114
1
R2704
220K
C2704
470P
: FM/AM SIGNAL LINE
: CD SIGNAL LINE
: MIC SIGNAL LINE
: MAIN SIGNAL LINE
: TAPE RECORD SIGNAL LINE
: TAPE PLAYBACK SIGNAL LINE
C21
13
6800P
C2213
6800P
C21
19
0.12
C2124
1
C2224
1
C2134
1
C2234
1
C2154
1
C2254
1
C2161 0.01
C2261 0.01
C2581 16V100
C2582
16V100
R2282
0
C2201 1
C2195
0.47
R2145
1K
R2314
0
R2146
1K
R2313
100K
R2413
100K
C2181
1
C2182
1
R2702
1K
C2
C2
R23
56
R2703 220K
C2703
470P
Q2978
B1GDCFJJ0047
REC:ON/OFF CONTROL SWITCH
Q2980
B1GDCFJJ0047
SUPPLY CONTROL SWITCH
(DECK MOTOR)
Q2142
B1ABCF000176
AGC CONTROL SWITCH
Q2311,Q2411
B1ABGC000005
MUTING SWITCH
Q2242
B1ABCF000176
AGC CONTROL SWITCH
Q2511
B1GDCFJJ0047
MUTING CONTROL
Q2341,Q2441
B1ABGC000005
HEADPHONE MUTING
C2193
1
R2196
10K
R2195
10K
R2281
680
C2192
0.1
R2701
1K
C2273 0.01
C2274 0.01
C2271 0.15
C2272 0.082
C2402 1
C2401
0
C2302
0
C2301
1
C2172
0.056
C2171
0.1
C2174
0.01
C2173
0.01
C2183
0.22
R2183
1K
R2182
0
R2163
56K
C2101
1
R2181
680
C2175
3300P
IC2803
C1BB00001121
AUDIO SOUND PROCESSOR
R2411
470
R2245
1K
R2247
100K
C2245
16V10
W2506
0
W2503
0
W2520
0
W2577
0
W2501
0
R2253
8.2K
R2243
12K
R2143
12K
R2213
12K
R2113
12K
R2123
27K
R2223
27K
R2133
3.3K
R2233
3.3K
R2153
8.2K
W2511
0
W2531
0
W2513
0
W2514
0
W2546
0
W2526
0
W2530
0
W2553
0
1/4
R2203
2.2K
Q2501
B1ABCF000176
LEVEL METER
CONTROL SWITCH
C2501
1
R2504
100
R2501
330K
R2503
2.7K
R2502
82K
D2503
B0ADCC000002
R2505
0
A_GND
R2507
100K
C2507
0.22
R2103
2.2K
C2244
1
R2161
4.7K
R2261
4.7K
C2263
50V1
LM_1
SA-AK640PL
63
Summary of Contents for SA-AK640PL
Page 12: ...7 Accessories Remote Control FM Antenna Wire AC Cord AM Loop Antenna 12 SA AK640PL ...
Page 13: ...8 Operating Instructions Procedures 13 SA AK640PL ...
Page 14: ...14 SA AK640PL ...
Page 23: ...10 3 Main Parts Location 23 SA AK640PL ...
Page 39: ...39 SA AK640PL ...
Page 41: ...12 2 Checking and Repairing of Transformer P C B 41 SA AK640PL ...
Page 42: ...12 3 Checking and Repairing of Panel Deck Deck Mechanism P C B 42 SA AK640PL ...
Page 43: ...12 4 Checking and Repairing of Power P C B 43 SA AK640PL ...
Page 48: ...48 SA AK640PL ...
Page 49: ...14 2 Power P C B Transformer P C B 49 SA AK640PL ...
Page 50: ...14 3 Waveform Chart 50 SA AK640PL ...
Page 51: ...51 SA AK640PL ...
Page 58: ...58 SA AK640PL ...
Page 60: ...SA AK640PL 60 ...
Page 62: ...SA AK640PL 62 ...
Page 68: ...SA AK640PL 68 ...
Page 70: ...SA AK640PL 70 ...
Page 76: ...SA AK640PL 76 ...
Page 84: ...SA AK640PL 84 ...
Page 89: ...21 Exploded Views 21 1 Cabinet Parts Location SA AK640PL 89 ...
Page 90: ...SA AK640PL 90 ...
Page 91: ...21 2 Deck Mechanism Parts Location RAA4502 S SA AK640PL 91 ...
Page 92: ...21 3 Packaging SA AK640PL 92 ...