Sony HCD-GT220 / HCD-GT440 / HCD-GT660 / MHC-GT220 / MHC-GT440 / MHC-GT660 Service Manual ▷ View online
HCD-GT220/GT440/GT660
HCD-GT220/GT440/GT660
45
45
7-21. SCHEMATIC DIAGRAM - AMP Board (GT220/GT660) -
• See page 58 for IC Block Diagrams.
M1
(4/4)
BOARD
MAIN
Q1
CN502
BOARD
SUB WOOFER
P1
CN903
BOARD
TRANSFORMER
IC B/D
CN031
0
15.4
0
15.4
15.2
0
0.2
15.5
0
0.7
0.2
0.8
0.8
1.8
0
0
1.9
0
15.5
2.6
3.2
30.5
15
0
0
0
0
15
0
0
1.8
0
0
57.2
0
0
0
0
58.8
-58.8
30
-30
13.8
-13.8
-57
100V
0.1
C403
100V
0.1
C404
2SC3052EF-T1-LEF
Q481
2SC3052EF-T1-LEF
Q482
2SC3052EF-T1-LEF
Q483
2SC3052EF-T1-LEF
Q484
2SC3052EF-T1-LEF
Q486
2SC3052EF-T1-LEF
Q487
50V
47
C447
50V
47
C448
100V
47
C461
100V
47
C462
50V
2.2
C486
50V
10
C441
50V
10
C442
10V
100
C481
100p
C445
100p
C446
1000p
C443
1000p
C444
47k
R443
47k
R444
47k
R447
47k
R448
47k
R465
47k
R487
33k
R491
33k
R492
4.7k
R481
22k
R457
22k
R458
22k
R488
330
R483
2.2k
R441
2.2k
R442
R479
3.3k
10k
R482
100k
R401
100k
R402
100k
R403
100k
R404
100k
R405
100k
R406
100k
R409
100k
R410
100k
R459
100k
R460
100k
R466
R480
33k
47k
R484
47k
R485
100k
R486
R497
120k
100
R407
100
R417
100
R418
100
R419
10
R411
10
R412
10
R413
10
R414
10
R415
10
R416
10
R420
10
R421
10
R422
10
R423
10
R424
10
R425
10
R453
10
R454
10
R461
10
R462
1k (GT220)
1.2k (GT660)
1k (GT220)
1.2k (GT660)
R445
R446
1k
R455
1k
R456
1k
R499
1W
2.2k
R467
1W
2.2k
R468
TH441
5W
0.22
R449
5W
0.22
R450
0.1
C413
0.1
C414
0.1
C451
0.1
C452
0.1
C453
0.1
C454
2SC5625
Q441
2SC5625
Q442
1k
R498
33k
R469
1k
R470
35V
22
C463
E
EP401
MAZ8160GMLS0
D445
MAZ8160GMLS0
D446
1.7uH
L441
1.7uH
L442
RY441
-1
-2
3
4
5
6
7
CN443
7P
GND
-VCC
PROTECT
RELAY+
RELAY-
C411
1000p
1
2
3
4
5
6
7
8
9
10
11
12
13
13P
CN441
GND(AC-3_RELAY)
NC
STK_MUTE
POWER_GND
UNREG.16V
IN-L
AMP-A_GND
IN-R
PROTECT
RELAY_B+
HP R-OUT
HP-GND
HP L-OUT
3
4
5
6
CN442
6P
AC-VL
GND
AC-VL
AC-VH
JL405
JL407
JL408
JL411
JL413
JL415
JL416
JL418
JL419
JL420
JL421
JL422
JL438
JL439
30PRA20FC
D448
30PRA20FC
D447
MC2836
D441
2SC3052EF-T1-LEF
Q489
2SC3052EF-T1-LEF
Q480
2.2k
R489
2.2k
R490
15k
R440
2SC3052EF-T1-LEF
Q488
ISA1235AC1TP-1EF
Q485
D10XB20
D401
D10XB20
D402
MA111-TX
D483
MA111-TX
D481
MA111-TX
D443
71V
2200
C405
71V
2200
C406
C409
C410
1
R495
100
R500
100
R496
1
6
5
4
3
2
11
10
9
8
7
12
16
15
14
13
19
18
17
STK415-120-E (GT660)
STK415-130-E (GT220)
STK415-130-E (GT220)
IC441
+VL
-VL
+OFF_SET
-OFF_SET
-PRE
-VH
+VH
OUT_CH1+
OUT_CH1-
OUT_CH2+
OUT_CH2-
+PRE
SUB
GND
IN_CH1
NF_CH1
STBY
NF_CH2
IN_CH2
AMP BOARD
IC441
POWER AMP
A
10
1
2
J
H
B
13
11
L
C
7
8
I
14
F
9
6
K
4
15
16
3
G
D
5
17
E
12
(GT660)
(GT660)
(GT660)
PROTECT
DETECT
Q483, 484
TEMPERATURE DETECT
DC DETECT
Q481, 482
PROTECT
STANDBY SWITCH
OVER LOAD DETECT
OVER LOAD DETECT
-
JK441
SPEAKER
SPEAKER
L
+
+
R
-
(CHASSIS)
409, 410
2200 50V (GT220)
3300 50V (GT660)
3300 50V (GT660)
RELAY DRIVE
Q480, Q486, 488
~
~
~
~
1
2
+VCC
NC
1
2
AC-VH
NC
(Page 49)
(Page
41)
(Page
55)
Ver. 1.1
Note: When replacing IC441, please exchange IC501 of SUB
WOOFER board simultaneously. (HCD-GT660 only)
HCD-GT220/GT440/GT660
HCD-GT220/GT440/GT660
46
46
B E
B E
B E
B E
B E
B E
B E
B E
B E
B
E
B E
B E
Q480
Q481
Q482
Q483
Q484
Q485
Q486
Q487
Q488
Q489
D441
D443
D481
D483
Q441
Q442
JL401
JL403
JL405
JL411
JL413
JL426
JL427
JL429
C411
C443
C444
C445
C446
R401
R402
R403
R404
R407
R412
R413
R414
R415
R416
R417
R418
R419
R420
R421
R422
R423
R424
R425
R426
R427
R440
R441
R442
R443
R444
R445
R446
R447
R448
R453
R454
R455
R456
R457
R458
R459
R460
R461
R462
R465
R466
R467
R480
R481
R482
R483
R484
R485
R486
R487
R488
R489
R490
R491
R492
R493
R497
R498
R499
1
4
3
1
7
3
+
-
1
15
1
13
H001
LP401
JK441
C403
C404
C405
C406
R449
R451
R452
CN442
CN443
TH441
R495
R496
D401
RY441
EP401
L441
L442
C441
C442
C447
C448
C451
C452
C453
C454
C481
C486
C488
C489
C490
CN441
JW402
JW412
JW421
JW422
JW423
JW434
JW452
JW465
JW403
JW420
JW428
JW429
JW438
JW441
JW442
JW443
JW444
JW646
JW405
JW416
JW417
JW427
JW431
JW407
JW411
JW413
JW414
JW415
JW424
JW430
JW437
JW404
JW406
JW418
JW419
JW425
JW426
JW435
JW436
JW440
JW401
JW408
JW409
JW410
JW432
JW433
JW445
JW446
JW447
JW448
JW449
JW450
IC441
(CHASSIS)
M2
MAIN BOARD
CN031
Q2
SUB WOOFER
BOARD
CN502
P2
TRANSFORMER
BOARD
CN903
AMP BOARD
1-872-551-
11
(11)
R
L
SPEAKER
-2
-1
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
7-22. PRINTED WIRING BOARD - AMP Board (GT440) -
•
: Uses unleaded solder.
• See page 27 for Circuit Boards Location.
Ref. No. Location
• Semiconductor
Location
D401
E-3
D441
C-5
D443
B-2
D481
C-5
D483
C-8
IC441
B-6
Q441
C-5
Q442
C-5
Q480
C-8
Q481
D-7
Q482
D-7
Q483
D-8
Q484
D-8
Q485
C-7
Q486
D-8
Q487
C-8
Q488
C-8
Q489
B-7
(Page 37)
(Page 56)
(Page 48)
HCD-GT220/GT440/GT660
HCD-GT220/GT440/GT660
47
47
7-23. SCHEMATIC DIAGRAM - AMP Board (GT440) -
• See page 58 for IC Block Diagrams.
M2
BOARD
(4/4)
MAIN
CN031
TRANSFORMER
CN903
BOARD
P2
SUB WOOFER
CN502
BOARD
Q2
IC B/D
-50.4
-51
51
0
0
0
0
49.8
0
0
0.6
0
0
0
15.6
0.7
15.6
0
0
15.5
0
0.2
0.2
1.8
15.6
15.6
0
0
0
15.4
1.9
0
15.4
0
31.6
2.6
3.2
0
0
0.8
0.8
100V
0.1
C403
100V
0.1
C404
2SC3052EF-
T1-LEF
Q481
2SC3052EF
-T1-LEF
Q482
2SC3052EF
-T1-LEF
Q483
2SC3052EF
-T1-LEF
Q484
2SC3052EF-T1-LEF
Q486
2SC3052EF-T1-LEF
Q487
50V
47
C447
50V
47
C448
50V
2.2
C486
50V
10
C441
50V
10
C442
10V
100
C481
100p
C445
100p
C446
1000p
C443
1000p
C444
47k
R443
47k
R444
47k
R447
47k
R448
47k
R465
47k
R487
4.7k
R481
22k
R457
22k
R458
22k
R488
330
R483
2.2k
R441
2.2k
R442
R491
10k
10k
R482
100k
R401
100k
R402
100k
R403
100k
R404
47k
R459
47k
R460
100k
R466
R480
33k
47k
R484
47k
R485
100k
R486
R497
120k
100
R407
100
R417
100
R418
100
R419
10
R467
10
R415
10
R413
10
R414
10
R412
10
R416
10
R420
10
R421
10
R422
10
R423
10
R424
10
R425
10
R453
10
R454
10
R461
10
R462
1k
R445
1k
R446
1k
R455
1k
R456
1k
R499
TH441
5W
0.22
R451
5W
0.22
R452
0.1
C451
0.1
C452
0.1
C453
0.1
C454
2SC5625
Q441
2SC5625
Q442
1k
R498
R493
47k
R492
1k
C488
22
35V
E
EP401
1.7uH
L441
1.7uH
L442
RY441
-1
-2
3
4
5
6
7
CN443
7P
GND
-VCC
PROTECT
RELAY+
RELAY-
C411
1000p
1
2
3
4
5
6
7
8
9
10
11
12
13
13P
CN441
GND(AC-3_RELAY)
VFL
STK_MUTE
POWER_GND
UNREG.16V
IN-L
AMP-A_GND
IN-R
PROTECT
RELAY_B+
HP R-OUT
HP-GND
HP L-OUT
1
9
8
7
6
5
4
3
2
15
14
13
12
11
10
STK403-130-M-E
IC441
-PRE
-Vcc
+Vcc
CH1_OUT+
CH1_OUT-
CH2_OUT+
CH2_OUT-
+PRE
SUB
GND
CH1-IN
CH1-NF
ST-BY
CH2-NF
CH2-IN
3
4
CN442
4P
GND
AC
63V
47
C489
63V
100
C490
JL401
JL403
JL405
JL411
JL413
JL426
JL427
JL429
MC2836
D441
22k
R426
47k
R427
2SC3052EF-T1-LEF
Q489
2SC3052EF-T1-LEF
Q480
2SC3052EF-T1-LEF
Q488
2.2k
R490
2.2k
R489
15k
R440
ISA1235AC1TP-1EF
Q485
D10XB20
D401
MA111-TX
D483
MA111-TX
D481
MA111-TX
D443
2200
63V
C405
2200
63V
C406
1
R495
100
R496
1/2W
47
R449
AMP BOARD
IC441
POWER AMP
(CHASSIS)
R
+
SPEAKER
-
-
+
L
JK441
Q483, 484
TEMPERATURE
DETECT
Q481, 482
DC DETECT
OVER LOAD
DETECT
DETECT
OVER LOAD
PROTECTOR
PROTECT DETECT
RELAY DRIVE
Q480, 486, 488
A
10
1
2
J
H
B
13
11
C
7
8
I
14
F
9
6
K
4
15
16
3
G
D
5
E
12
STANDBY SWITCH
OVER LOAD DETECT
~
~
1
2
+VCC
NC
1
2
AC
NC
(Page 41)
(Page 57)
(Page 49)
HCD-GT220/GT440/GT660
HCD-GT220/GT440/GT660
48
48
7-24. PRINTED WIRING BOARDS - SUB WOOFER Section (GT440/GT660) -
•
: Uses unleaded solder.
• See page 27 for Circuit Boards Location.
Ref. No. Location
• Semiconductor
Location
D501
C-4
D502
C-6
D503
C-6
D504
B-7
D507
C-2
IC501
D-4
Q501
D-6
Q502
B-6
Q503
B-3
Q505
C-2
Q506
C-3
Q507
D-3
JR502
D504
D507
R532
D501
R533
Q503
R501
C503
Q507
R502
JR501
C502
C505
R504
R503
R529
R530
R531
R520
Q505
Q506
R524
D502
D503
Q501
R515
R513
R514
R527
R525
R526
R512
Q502
R517
R518
R516
R522
R521
R523
JW502
JW503
JW504
JW505
JW506
JW507
JW516
JW522
R505
JW509
JW501
CN503
C510
C512
C513
R509
R534
C517
C511
C507
R506
R508
R507
C514
R511
C506
JW521
C504
CN501
R510
IC501
RY501
C516
C509
CN502
E
JW514
CN504
E
E
E
E
E
SUB WOOFER BOARD
1-868-919-
12
(12)
1
3
Q2
AMP
BOARD
CN443
Q1
AMP
BOARD
CN443
(GT440)
(GT660)
L
MAIN
BOARD
CN271
-1
-2
1
4
SW-SP BOARD
1-868-920-
12
(12)
1
4
SUB WOOFER OUT
JK501
+
–
A
B
C
D
1
2
3
4
5
6
7
8
9
10
(Page 37)
(Page 44)
(Page 46)
Note: When replacing IC501, please exchange IC441 of
AMP board simultaneously. (HCD-GT660 only)
Ver. 1.1
Click on the first or last page to see other HCD-GT220 / HCD-GT440 / HCD-GT660 / MHC-GT220 / MHC-GT440 / MHC-GT660 service manuals if exist.