2
A
1
3
4
5
6
7
B
C
D
E
D404
D403
D401
D402
(3/4)
(4/4)
(2/4)
IC402
IC402
IC402
SW401
CROSSOVER
CROSSOVER
FILTER
INPUT
JK401
(2/2)
IC401
(1/2)
IC401
D407
D408
Q402
Q401
CN503
IC501
CN501
IC502
CN502
Q501
Q502
ZD501
D503
ZD502
DUAL
SW902
: NJM4558D
: TL074CN
: LM3886T
: KIA7815API
: KIA7915PI
: 2SC945
: 2SA733
D401-408,501 : 1N4148
D503,901
: 1N4001
D902-905
: 1N5392
ZD501
: MTZJ15(B)
ZD502
: MTZJ8.2(B)
DB901
: KBU8B
B LINE
B LINE
SIGNAL LINE
SP1
1K
220P
100P
C402
C401
R401
4.7u50
0.1
C404
C403
9
10
8
12
13
14
11
4
6
5
7
36K
R402
5.6K
R403
R405
100
R407
R406
56K
56K
0.056
C408
JUMP
C405
C406
0.056
C407
0.056
R41
1
330K
2.7K
R416
4.7K
R410
C409
100P
100K(B)
VR401
4.7K
R415
C418
0.1
C428
100u25
+
0.1
C417
100u25
+
C429
10K
R438
270K
R436
10K
R437
270K
R435
4.7u50
+
C430
10K
R433
56
R434
47K
R413
100K
R429
2.2u50
C421
+
4.7K
R430
2K
R431
47P
C423
C422
0.1
100K
R428
2.2M
R432
2.2K
R458
100u16
C431
+
6
5
8
4
7
C425 47P
R440
R439
1K
560K
+
680K
R445
2
3
1
R442
82K
R443
470u16
4700p
C427
220K
R441
100u16
C426
+
680K
R444
1M
01
C433
1
2
3
4
5
6
7
GND
+15V
GND
-15V
10
9
2
7
3
GND
NC
5
6
NC
V+
11
8
NC
OUT
22u50
C517
+
470P
C519
1K
R535
1
4
V-
V
+
0.22
C527
C513
0.1
0.1
C507
C528
0.047
MUTE
20K
R537
C515
30P
47K
R539
20K
R533
2.7
R524
0.1
C509
2
1
6800P
C535
R525
C518
22u50
+ 1K
MUTE
C516
R540
47K
2.7
30P
0.1
C508
0.047
C531
R538
20K
9
10
R534
20K
470P
C520
R536
0.1
C514
0.1
NC
V+
GND
4
V-
NC
6
7
NC
1
V+
5
2
3
OUT
8
C510
11
6800P
C534
1
2
47u50
C522
+
C502
4.7u50
+
C503
4.7u50
+
2.2K
22K
R546
10K
R531
C525
0.01
R541
2.2K
R545
22K
R544
100u25
100u25
C524
C521
++
47K
R528
R530
15K
47K
R527
33K
R523
680
1/4W
1.2K
R521
1/4W
56K
R522
10u25
C523
+
T1
WHT
GRY
BLK
A
A
+15V
+15V
+15V
15V
V+
V+
V+
V+
V
V
V
V
V
V
+15
+15V
15V
+B
B
R404
47K
00
3
3
C41
1
C529
0.22
R529
C530
0.22
+
PRE AMP BOARD
POWER AMP BOARD
CAUTION:
For continued safety, replace safety critical components only with manufacturer's recommended parts (refer
to parts list).
indicates safety critical components. For continued protection against risk of fire, replace only with same
type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried
out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
4
PRE AMP BOARD 1/2
SW-37HT/37HT-H/37HT-ML/37HT-S/37HT-W
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513
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Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
