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3 7 6 3 1 5 1 5 0
6-20. SCHEMATIC DIAGRAM – POWER AMP Section –
C441
R411
10
R441
2.2k
50V
1k
JW441
C445
100p
R445
1k
C447
R413
C443
R443
47
10k
1000p
56k
50V
EP491
C492
0.01
C448
47
(CHASSIS)
50V
T E
L
1 3 9 4 2 2 9 6 5 1 3
R446
1k
R414
10k
C444
R444
1000p
56k
JW442
C442
10
R442
C446
50V
1k
100p
R412
2.2k
w w w
.
C461
R467
47
3.3k
100V
1W
R496
100
D445
MTZJ-T-72-18C
R455
1k
IC441(1/2)
STK412-240
POWER AMP
R447
56k
R474
R457
2.2k
15k
Q491
Q490,491
2SA1207
LEVEL SHIFT
D444
R470
1SS133T
R472
R473
33k
-72
33k
22k
Q489
2SC1841
Q490
STANDBY
C463
R469
R471
2SC1841
470
SWITCH
33k
68k
6.3V
R475
10k
C462
47
100V
R495
R476
R477
1
15k
100
R468
R478
R458
3.3k
10k
15k
1W
R448
56k
D446
MTZJ-T-72
-18C
IC441(2/2)
STK412-240
R456
1k
x
a o
y
i
http://www.xiaoyu163.com
8
R449
0.22
5W
JW403
R466
R465
56k
47k
Q481,482
DC DETECT
R484
56k
Q481
R483
Q482
2SC2785
22
2SC2785
Q441
2SC1841
C481
TH441
100
OVER LOAD
10V
C451
DETECT
0.1
C453
0.1
R453
10
R459
1/2W
100k
R454
10
1/2W
Q
Q
3
7
6
3
C454
0.1
Q485
2SA1175
D481
C452
1SS133T
0.1
R460
R481
Q485,487
100k
4.7k
PROTECT
DETECT
R487
33k
Q487
2SC2785
R490
4.7k
Q442
C487
D482
2SC1841
4.7
1SS133T
OVER LOAD
50V
-72
DETECT
Q486
2SC2785
R489
4.7k
Q486,488
R488
22k
PROTECTOR
JW404
R450
0.22
5W
u 1 6 3
.
41
41
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2
4
9
9
8
R485
RY441
100k
R486
100k
Q483
2SC2785
Q484
2SC2785
Q483,484
THERMAL
DETECT
D443
1SS133T
R407
100
1/2W
1
5
1
5
0
8
9
2
4
C486
R482
2.2
10k
50V
D401
D10XB20
D402
D10XB20
Q488
2SC2785
JW411
JW409
C414
0.1
C413
0.1
m
c o
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
CX-JS77
2
9
9
JK441
L441
4P
L
R461
10
1/2W
SPEAKER
IMPEDANCE
R462
R
10
1/2W
L442
EP401
C402
9
8
2
9
9
0.01
JW401
(CHASSIS)
CN441
13P
L-OUT
SP-GND
R-OUT
RELAY B+
E
PROTECT
IN-R
AMP-A-GND
IN-L
UNREG.16V
(Page 34)
PWR GND
STK MUTE
AC-3
GND(AC-3,RELAY)
(CHASSIS)
EP402
CN442
5P
AC-VH
AC-VL
GND
AC-VL
AC-VH
(Page 43)
Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.
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