Sony HCD-GX255 / HCD-RG170 / HCD-RG470 / MHC-GX255 / MHC-RG170 / MHC-RG470 Service Manual ▷ View online
41
41
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-20. SCHEMATIC DIAGRAM – POWER Board – (GX255/RG170)
J1
MAIN BOARD
(3/3)
CN031
J4
MAIN BOARD
(3/3)
CN031
C403
D483
R491
R481
CN442
C441
R441
R443
R444
R445
C448
R446
R458
R459
Q441
R460
R425
R424
R423
R422
C452
C454
R421
R454
D481
R497
R466
R465
R499
R487
R498
R490
R482
C486
R417
R407
R418
R419
R402
R401
R437
C404
R411
R412
R413
R461
R416
R415
R414
R462
R486
C481
R420
R453
C453
C451
D441
R492
R496
R442
C442
JW402
CN441
C443
R449
C447
C488
R493
RY441
D443
JW441
R484
R480
R483
R456
R455
JW422
R447
JW401
R448
C446
JR442
JR441
C445
C491
C444
EP401
R495
C411
JK441
R488
Q487
R440
Q442
Q482
Q481
R485
Q483
Q484
Q485
Q486
L442
L441
C459
C460
C405
C406
Q488
D401
TH443
TH441
R451
R469
R452
R457
R468
Q489
C489
C490
IC441(1/2)
IC441(2/2)
C493
C494
0.1
100V
1SS355
TE-17
47k
4.7k
3P
10
50V
2.2k
47k
47k
1k
22
35V
1k
22k
47k
2SC5625
47k
10
10
10
10
0.1
0.1
10
10
1SS355
TE-17
100k
100k
47k
1k
47k
1k
4.7k
10k
2.2
50V
50V
100
100
220
100
100k
100k
10k
0.1
100V
10
10
10
10
10
10
10
10
100k
100
10V
10V
10
10
0.1
0.1
MC2836
1k
100
2.2k
10
50V
13P
0.001
47 1/2W
22
35V
22
35V
47k
1SS355TE-17
100k
100k
22
1k
1k
47k
47k
100p
0
0
100p
1000p
0.001
1
22k
2SC3052EF
22k
2SC5625
2SC3052
EF
2SC3052
EF
100k
2SC3052
EF
2SC3052
EF
2SA1235EF
2SC3052EF
1000p
1000p
2SC3052EF
0.22
2W
2.2k
0.22
2W
22k
2.2k
2SC3052EF
47
50V
100
50V
50V
1000p
0
∗
∗
∗
∗
∗
∗
SP(L)
SP(R)
SP GND
SP-GND
AMP-A-GND
RELAY B+
PWR GND
STK MUTE
PROTECT
GND
NC
NC
SP GND
(L)
(R)
∗C411
1000p
0.01
(CHASSIS)
SP L-OUT
SP R-OUT
R-OUT
L-OUT
UNREG +16V
GND
AC1
AC1
IMPEDANCE
SPEAKER
9
14
15
8
1
3
2
6
7
10
4
STANDBY
SWITCH
POWER AMP
Q441,442
OVER LOAD
DETECT
RELAY DRIVE
RELAY SWITCH
PROTECT
DETECT
PROTECTOR
Q481,482
DC DETECT
Q483,484
TEMPERATURE DETECT
(AEP,EE,RU)
(AEP,EE,RU)
(EXCEPT AEP,EE,RU)
∗C405,406
2200 42V
2200 50V
(AEP,EE,RU)
(EXCEPT AEP,EE,RU)
(AEP,EE,RU)
(EXCEPT AEP,EE,RU)
∗D401
D3SBA20-4101
D10XB20
(AEP,EE,RU)
(EXCEPT AEP,EE,RU)
(EXCEPT AEP,EE,RU)
(AEP,EE,RU)
(AEP,EE,RU)
(AEP,EE,RU)
∗IC441
STK403-090
(CND)
STK403-100
(E2,E3,E51,EA,AR,AUS)
STK433-030
(AEP,EE,RU)
(AEP,EE,RU)
USE 6
−16Ω
(SUFFIX-11)
(SUFFIX-12)
(Page 35)
(Page 55)
(Page 39)
42
42
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-21. PRINTED WIRING BOARD – POWER Board – (RG470: AEP, EE, RU)
: Uses unleaded solder.
•
See page 25 for Circuit Boards Location.
CN442
C460
C459
JW
422
D401
C406
R
452
C405
TH441
C489
C490
JW
449
JW416
JW445
JW
447
JW
459
JW
454
JW462
JW442
JW452
JW457
JW444
JW410
JW466
JW
412
JW408
JW
465
JW439
JW
456
JW
420
JW
460
JW
455
JW464
L441
JW
419
JW403
R495
JW
417
R496
JW461
JW463
JW458
C442
JW443
JW
450
JW438
JW
406
JW440
C452
C454
C451
JW
453
JW
421
JW448
JW
415
JW
414
JW
413
JW446
C447
C488
C441
L442
C448
RY441
C403
CN441
JW409
JW451
EP401
C486
JW
404
C481
JW
418
JW411
JW
407
C453
R449
JW
467
JW
423
JW
402
JW405
JW
424
JW441
JW
401
R
451
C404
C491
R484
C446
R448
R447
JR
441
JR442
R456
C411
R455
Q488
C445
R483
R480
Q489
C494
C493
D441
R445
R446
R423
R421
R424
C
443
R443
R441
R425
R444
R402
R459
R462
R414
R416
C444
R442
D481
Q441
R411
R415
R457
R
437
R460
R
417
R412
R
407
R
418
R
419
D443
R485
Q481
R465
R481
R466
R497
R461
R422
R454
R453
R413
R490
R440
R499
R
498
R
488
R487
R420
R482
R493
R492
R491
D483
R401
Q486
Q487
Q485
Q482
R486
Q483
Q442
Q484
R458
POWER BOARD
1-865-472-
11, 21
(11, 21)
E
E
E
E
E
E
E
E
E
E
E
+
+
–
–
L
R
SPEAKER
IMPEDANCE
USE 6 – 16
Ω
JK441
(CHASSIS)
J5
MAIN
BOARD
CN031
1
13
3
1
N5
TRANSFORMER
BOARD
CN905
JW
425
JW
433
A
K
K
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
IC441
(Page 36)
(Page 56)
•
Semiconductor
Location
Location
Ref. No. Location
D401
E-3
D441
C-6
D443
B-2
D481
C-5
D483
B-8
IC441
B-6
Q441
C-5
Q442
C-6
Q481
D-8
Q482
D-8
Q483
D-8
Q484
D-8
Q485
C-8
Q486
C-8
Q487
C-8
Q488
C-8
Q489
B-8
43
43
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-22. SCHEMATIC DIAGRAM – POWER Board – (RG470: AEP, EE, RU)
J5
N5
C403
D483
R491
R481
CN442
C441
R441
R443
R444
R445
C448
R446
R458
R459
Q441
R460
R425
R424
R423
R422
C452
C454
R421
R454
D481
R497
R466
R465
R499
R487
R498
R490
R482
C486
R417
R407
R418
R419
R402
R401
R437
C404
R411
R412
R413
R461
R416
R415
R414
R462
R486
C481
R420
R453
C453
C451
D441
R457
R492
R496
R442
C442
JW402
CN441
C443
R449
C447
C488
R493
D401
RY441
D443
C405
C406
R484
R480
R483
TH441
R452
R456
R455
R451
JW422
R447
JW401
C490
R448
C489
IC441(2/2)
IC441(1/2)
C446
JR442
Q489
JR441
C445
C491
C444
EP401
R495
C459
C460
JK441
C494
C493
R488
Q487
R440
Q442
Q482
Q481
R485
Q483
Q484
Q485
Q486
L442
L441
C411
JW441
Q488
0.1
100V
1SS355
TE-17
47k
4.7k
3P
10
50V
2.2k
47k
47k
1k
22
35V
1k
22k
47k
2SC5625
47k
10
10
10
10
0.1
0.1
10
10
1SS355
TE-17
100k
100k
47k
1k
47k
1k
4.7k
10k
2.2
50V
50V
100
100
220
100
100k
100k
10k
0.1
100V
10
10
10
10
10
10
10
10
100k
100
10V
10V
10
10
0.1
0.1
MC2836
22k
1k
100
2.2k
10
50V
13P
0.001
47 1/2W
22
35V
22
35V
47k
D10XB20
1SS355TE-17
2200
63V
2200
63V
100k
100k
22
0.22
5W
1k
1k
0.22
5W
47k
100
63V
63V
47k
47
63V
STK403-130
STK403-130
100p
0
2SC5625
0
100p
1000p
0.001
1
1000p
100V
1000p
100V
2200p
2200p
22k
2SC3052EF
22k
2SC5625
2SC3052
EF
2SC3052
EF
100k
2SC3052
EF
2SC3052
EF
2SA1235EF
2SC3052EF
1000p
2SC3052EF
SP(L)
SP(R)
SP GND
SP-GND
AMP-A-GND
RELAY B+
PWR GND
STK MUTE
PROTECT
GND
NC
NC
SP GND
(L)
(R)
(CHASSIS)
SP L-OUT
SP R-OUT
R-OUT
L-OUT
UNREG +16V
GND
AC1
AC1
IMPEDANCE
SPEAKER
9
14
15
8
1
3
2
6
7
10
4
STANDBY
SWITCH
POWER AMP
Q441,442
OVER LOAD
DETECT
RELAY DRIVE
RELAY SWITCH
PROTECT
DETECT
PROTECTOR
Q481,482
DC DETECT
Q483,484
TEMPERATURE DETECT
USE 6
−16Ω
(Page 57)
(Page 39)
44
44
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-23. PRINTED WIRING BOARD – POWER Board – (RG470: E2, E51, AR, MX)
: Uses unleaded solder.
•
See page 25 for Circuit Boards Location.
IC441
D401
C406
C405
D402
C447
C448
CN442
C409
C410
JW
4
0
4
JW
4
0
3
JW456
C462
JW479
JW478
C413
C403
JW
4
4
8
C404
JW
43
8
C414
T
H
4
4
1
JW459
JW
4
7
7
JW483
C461
C
48
6
C463
JW
4
3
0
JW
4
1
8
JW
43
7
R
4
5
0
JW
43
6
R468
JW
4
3
5
JW
4
4
3
R
49
6
JW
43
9
E
P
4
0
2
JW402
JW457
JW450
JW449
JW
4
42
JW
4
1
6
JW
4
2
7
R477
JW
4
0
5
JW
4
8
2
JW423
JW
4
3
1
JW
4
2
1
JW
4
2
9
JW401
JW458
R467
JW
4
4
7
JW
4
4
6
JW480
L442
C481
C442
R
4
4
9
EP401
JW
4
4
5
JW406
CN441
JW
4
3
3
JW
4
8
5
JW
4
4
0
JW484
JW
4
4
4
JW
4
3
2
C454
C453
C
4
5
2
C451
JW411
R
4
9
5
JW422
C441
JW412
JW409
JW408
JW410
JW413
JW
4
1
5
JW
4
2
6
JW
4
5
5
L441
JW
4
1
9
JW407
JW
4
2
8
JW
4
1
7
JW424
JW481
JW425
JW
4
5
4
JW
4
1
4
JW
4
2
0
JW
4
3
4
JW487
JW486
JW441
JR
4
4
1
C445
R445
R483
R480
R484
Q488
C411
JR442
R448
R446
C446
R
4
4
7
R402
R487
R
4
8
2
Q487
R
4
8
1
Q484
R488
R462
R479
R404
D445
R476
R437
R409
Q486
R
4
7
0
R401
D444
C402
R423
R421
R424
C
4
4
3
R
4
4
3
R441
R425
R
4
4
4
R440
R
4
5
8
R436
R
4
9
2
Q485
R403
R456
R459
R
4
91
R455
D481
R478
R
4
5
7
R
4
6
3
R498
R
4
9
0
Q482
Q481
Q491
R405
R475
Q489
Q483
R
4
9
9
Q442
R
47
3
R410
R420
R474
R
46
4
R
47
2
D446
R413
R453
R454
R422
R461
R466
R406
R465
R486
R
4
6
9
R497
R471
R
4
1
9
R
4
1
8
D441
R
4
0
7
Q490
R485
R412
R
4
1
7
R460
R415
R411
Q441
R442
C
4
4
4
R416
R414
R439
D443
RY441
(CHASSIS)
E
E
E
E
E
E
E
E
E
E
E
E
K
K
A
(CHASSIS)
POWER BOARD
1-865-480-
11
(11)
MAIN BOARD
CN031
MAIN BOARD
CN031
(SUFFIX-12)
(SUFFIX-11)
J6
J3
1
13
+
+
–
–
L
R
SPEAKER
IMPEDANCE
USE 6 – 16
Ω
JK441
TRANSFORMER
BOARD
CN905
N3
1
5
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
(Page 32)
(Page 36)
(Page 58)
•
Semiconductor
Location
Location
Ref. No. Location
D401
G-5
D402
G-3
D441
C-6
D443
A-2
D444
C-9
D445
B-8
D446
B-8
D481
C-6
IC441
B-7
Q441
C-6
Q442
C-6
Q481
D-9
Q482
D-8
Q483
C-10
Q484
C-9
Q485
C-7
Q486
C-6
Q487
C-7
Q488
C-6
Q489
C-8
Q490
D-9
Q491
C-9
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