Schematic Diagram - Amp Board (Gt44); Ao Y - Sony HCD-GT22 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-23. SCHEMATIC DIAGRAM – AMP Board (GT44) –
1 2 3
IC B/D
AMP BOARD
A
1 2 3
B
R449 47 1/2W
C490
100
C
R496
63V
C489
100
47
63V
R459
R427 OVER LOAD
47k
DETECT
47k
R455
1k
D 15.4 0
R426
22k
Q441
2SC5625 0
OVER LOAD
DETECT
E R457
22k
T E
L 1 3 9 4 2 2 9 6 5 1 3 D483
R492
MA111-TX
1k
F
R493
47k
15.6
15.6
G
Q485
ISA1235AC1TP-1EF
0
PROTECTOR
R487
47k
R498
1k
H
R499
1k
Q486
R488
2SC3052EF-T1-LEF
22k
I
J
w w w
K
HCD-GT22/GT44/GT55
• See page 58 for IC Block Diagrams.
4 5 6
IC441
POWER AMP
IC441
STK403-130-E
4 5 6 7 8 9 10 11 12 13 14 15
R495
1
D481
MA111-TX
R460
47k
31.6 2.6
R456
Q489
1k
0 15.4
2SC3052EF-T1-LEF
3.2
STANDBY SWITCH
R452
0.22
Q442
5W
2SC5625
0
OVER LOAD DETECT
D441
R441
R458
MC2836
22k 2.2k
C441
C443
R443
10
47k
50V 1000p
C488
22
35V
C486
R482
R481
2.2
10k
4.7k
50V
R440
15k
0.2
R490
2.2k
0.8
Q488
1.9
2SC3052EF-T1-LEF
0
Q487
0.2
2SC3052EF-T1-LEF
R489
PROTECT DETECT
2.2k
0.8
1.8
Q480
0 2SC3052EF-T1-LEF
Q480,486,488
RELAY DRIVE
x a o
y
. i
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7 8 9 10
C445
100p
R491 C451
10k 0.1
C453
0.1
R453
R424
10
10
R448 C446
100p R497
47k
120k
R447 47k
R420 R425
10 10
R465
R446
47k
1k
R445
1k
R442
C447
C448 C444 2.2k
R444 Q Q
47
47 47k 1000p
3 7 6
50V 50V
R483 R480
TH441
33k
330
Q481,482
DC DETECT
Q482
2SC3052EF
-T1-LEF
Q481
2SC3052EF-
15.6 15.6
Q483,484
T1-LEF
TEMPERATURE
0
DETECT
0
0.7
C481 R484
100 47k
10V
u 1 6 3
47 47
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2 4
8 9 9
11 12 13
L441
1.7uH
RY441
R461 R467
10
10
R415
R413
10 10
-1
R462 R414
10 10
-2
R416 10 R412 10
L442
C452
1.7uH
0.1
D443
MA111-TX
C454
0.1
R417 R418
100
100
R421 R422
10
10
R407 R419
100
100
R454 R423
10 10
C442
10
50V
3 1 5 1 5 0 8 9
D401
D10XB20
R486
100k
R485
47k 15.5
C405 R403 R401
100k
0 2200 100k
63V
Q483
2SC3052EF
-T1-LEF R404 R402
C406
100k
0 2200 100k
63V
Q484
2SC3052EF
-T1-LEF
m
c o
.
HCD-GT22/GT44/GT55
2
8 9 9
14 15 16
JL411
+
L
JK441
-
SPEAKER
-
JL413 R
+
CN441
13P
13 HP L-OUT
12 HP-GND
11 HP R-OUT
M2
10 RELAY_B+
9 PROTECT
MAIN
2 4 9 8 2 9 8 9 IN-R
BOARD
7 AMP-A_GND
(4/4)
6 IN-L CN031
(Page 41)
5 UNREG.16V
4 POWER_GND
3 STK_MUTE
2 VFL
JL426
1 GND(AC-3_RELAY)
~
~
C403
C411
0.1
1000p
100V
C404
E EP401
0.1
100V
(CHASSIS)
CN442
4P P2
JL427
1 AC
TRANS
3 GND
BOARD
4 AC CN903
JL429
(Page 57)
CN443
7P
7
RELAY-
6 RELAY+ Q2
5
PROTECT
SUB WOOFER
4
-VCC
BOARD
3 GND
CN502
1
+VCC
(Page 49)