Schematic Diagram - Sub Woofer Section (Gt44/Gt55) - Sony HCD-GT22 Service Manual

7-25. SCHEMATIC DIAGRAM – SUB WOOFER Section (GT44/GT55) –
1 2
SUB WOOFER BOARD
A
B
C
D
CN501
R529
3P
L 2.2k
SW-SIG_IN 1
SW-SIG_GND 2
MAIN
BOARD
SW-ON/OFF 3
(4/4)
CN271
(Page 41)
E
(GT55)
(Page 45)
+VCC 1
F
Q1
GND 2
-VCC 3
AMP
PROTECT 4
BOARD
CN443
RELAY+ 5
RELAY- 6
CN502
Q2
6P
AMP
G
BOARD
CN443
(Page 47)
(GT44)
H
HCD-GT22/GT44/GT55
• See page 58 for IC Block Diagrams.
3 4 5
1 2
D507
R531
4.7k MA111-TX
Q507
2SC3052EF-T1-LEF
0
TEMPERATURE DETECT
0.2
C516 12.4
10
50V
C502
220p
C503 R501
R502
4700p 47k
47k JR501
0
C505
R503 R504
47k
1k
C504
22
R506
25V
1
JW521
C506
100
25V
R534
1
R524
15.7 15.7
47k
0
Q506
Q505
2SC3052EF-T1-LEF 2SC3052EF-T1-LEF
0
Q505,506
DC DETECT
C514
100
35V
6 7 8 9
IC501
STK404-130S
IC501
POWER AMP
3 4 5 6 7 8 9 10 11 12 13
R511
0.22
5W
R510
0.22
5W
R508
4.7k
1W
Q501
2SC5625
OVER LOAD
DETECT
R513
1k
10p
0
C507
47 15.4
C513
50V
0.1
R514
C512
22k
0.1
R505
4.7k
2W
R509
100 R512
R527
10
10
C509
100
C511 R525 R526
100V
10 10
10
100V
C510
10
100V
R532
R520
22k 100k
15.5
Q503
0
2SC3052EF-T1-LEF
TEMPERATURE DETECT
C517
R533
10
22k
50V
49 49
10 11 12
IC B/D
Q502
ISA1235AC1TP-1EF
RELAY DRIVE
R517
10k
11.5
10.7
R522 R516
11.5
100
100
0
R521
R523
R518
10k
100 100
RY501
-1 -2
CN503
4P
R515 1 SW-OUT
47k
2 SW-OUT
3 SW-SP_GND
4 SW-SP_GND
HCD-GT22/GT44/GT55
13 14 15
SW-SP BOARD
SW-OUT
1
SW-OUT
+
JK501
SW-SP_GND
-
SW-SP_GND
4
SUB WOOFER
OUT