
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A
B
D
E
F
H
G
C
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 3
SA-
AK750E/EB/EG
MAIN CIRCUIT
1/4
2/4
3/4
4/4
2 1
7 8
5
4 3
6
IC2810
TO MAIN SECTION (2/4)
TO MAIN SECTION (4/4)
C30
C1
C2
C9
F_HOP
SUBW
FAN
+15V
ASP_GND
A_GND
HIGH_R-IN
HIGH_L-IN
LOW_R-IN
LOW_L-IN
T-GND
MUTE-D-AMP
R2334
R2434
R2428
R2426
R2326
R2328
C2943
CN2809
R2316
R2317
R2331
C2333
R2433
R2333
R2335
C2331
R2323
C2323
C2325
R2431
C2433
R2321
R2318
R2435
R2329 C2321
Q2317
C2443
R2456
R2356
C2343
R2416
R2423
C2423
R2421
C2425
R2418
Q2417
R2429
C2421
R2417
0
0
15k
0
0
15k
50V2.2
2.2k
10K...EG
18K...E/EB
10K...EG
18K...E/EB
0
1u
15k
15k
1k
6800P
39k
0.01
50V1
50V1
0
1u
0
100k
6800P
C2431
1k
8.2K
0.22
0.22
0.47u
180k
180k
0.47u
2.2k
39k
0.01
0
100k
8.2K
A_GND
T_GND
MUTE_D_AMP
+15V
FAN
F_HOP
7
9
10
8
4
5
1
3
2
6
12
11
Q2317,Q2417
B1ABCF000176
MUTING SWITCH
C3
C4
C5
C6
C7
C8
R2327
C2324
C2424 R2427
12k
1u
1u
12k
Q2555
B1ABCF000176
SUBW MUTING SWITCH
K3301
0
C2561
C2589
R2558
Q2554
D2551,D2552
B0BC2R4A0006
R2556
R2555
R2568
R2557
Q2553
R2567
1u
0.47u
3.3k
1k
1k
100k
1k
18k
Q2553,Q2554
B1ABCF000176
SUBWOOFER LEVEL
CONTROL SWITCH
R2565
R2560
R2722
C2722
R2564
R2721
C2731
R2731
C2551
R2561
C2552
C2721
Q2551
Q2552
C2558
R2563
C2555
C2556
220k
3.3k
1k
0.01u
220k
1k
50V100
100
2.2
27k
100p
100
0.15u
47k
100p
0.01u
IC2810
COABBB000244
SMT OP-AMP IC
Q2551,Q2552
B1GDCFJJ0047
SWITCH SUPPLY SWITCH
SW_LV2
R2588
D2551
D2552
R2566
180k
2.2k
R2562
R2559
C2553
C2554
Q2555
C2560
47k
18k
0.01u
1u
1u
SW_LV2
SW_LV1
A_GND
TO
POWER
CIRCUIT
(CN5102)
IN SCHEMATIC
DIAGRAM-9
: +B SIGNAL LINE
: MAIN SIGNAL LINE
: TAPE RECORD SIGNAL LINE
W587
0
W586
0
W673
0
W654
0
SA-AK750E / SA-AK750EB / SA-AK750EG
69
Summary of Contents for SA-AK750E
Page 9: ...9 SA AK750E SA AK750EB SA AK750EG ...
Page 14: ...14 SA AK750E SA AK750EB SA AK750EG ...
Page 27: ...10 3 Main Parts Location 27 SA AK750E SA AK750EB SA AK750EG ...
Page 39: ...10 17 1 Replacement of Pinch Roller and Head Block 39 SA AK750E SA AK750EB SA AK750EG ...
Page 46: ...12 4 Checking and Repairing of Power P C B 46 SA AK750E SA AK750EB SA AK750EG ...
Page 48: ...48 SA AK750E SA AK750EB SA AK750EG ...
Page 52: ...15 3 Power P C B Transformer P C B 15 4 Panel P C B 52 SA AK750E SA AK750EB SA AK750EG ...
Page 53: ...15 5 Main P C B 53 SA AK750E SA AK750EB SA AK750EG ...
Page 54: ...15 6 Deck P C B 15 7 Waveform Chart 54 SA AK750E SA AK750EB SA AK750EG ...
Page 56: ...56 SA AK750E SA AK750EB SA AK750EG ...
Page 64: ...SA AK750E SA AK750EB SA AK750EG 64 ...
Page 66: ...66 SA AK750E SA AK750EB SA AK750EG ...
Page 86: ...SA AK750E SA AK750EB SA AK750EG 86 ...
Page 91: ...23 Exploded Views 23 1 Cabinet Parts Location SA AK750E SA AK750EB SA AK750EG 91 ...
Page 92: ...SA AK750E SA AK750EB SA AK750EG 92 ...
Page 93: ...23 2 Deck Mechanism Parts Location RAA4403 S SA AK750E SA AK750EB SA AK750EG 93 ...
Page 94: ...23 3 Packaging SA AK750E SA AK750EB SA AK750EG 94 ...