Read Sony HCD-EC55 / HCD-EC77 / HCD-GX99 Service Manual online
13
13
HCD-EC55/EC77/GX99
HCD-EC55/EC77/GX99
PRINTED WIRING BOARDS — DECK SECTION (EXCEPT US, CND) —
•
:Uses unleaded solder.
IC502
IC501
DECK BOARD
AUDIO IN
PHONES
1-872-061-
1-872-065-
13
(13)
14
(14)
(CHASSIS)
MAIN BOARD
BOARD
CN606
B
MAIN
CN605
J
FFC502
1
9
EXCEPT US,CND
FFC404
13
(13)
14
(14)
C406
C405
C402
C401
C403
C404
R545
JR504
R546
R543
C545
R544
C546
JR503
JR502
JR501
C543
C541
C539
C538
C537
C536
C535
C534
C533
C532
C531
C530
C529
C528
C527
C526
C525
C524
C523
C522
C521
C520
C519
C517
C512
C511
C510
C509
C506
R541
C505
R540
C504
C503
R539
R538
R537
R536
R535
R534
R533
R532
R531
R530
R529
R528
R527
R526
R525
R524
R523
R522
R521
R520
R519
R518
R517
R516
R515
R514
R513
R512
R511
R510
R509
R508
R507
R506
R505
R504
R503
R502
R501
E
E
J402
J401
JW401
JW403
JW402
1
9
JACK BOARD
JW509
JW508
JW510
JW503
JW502
Q501
Q502
ET501
JW507
JW506
JW505
JW504
JW501
C542
C540
C516
C515
C514
C513
C502
C501
CN501
L501
S501
TAPE MECHANISM
DECK
SUPPLEMENT-1
Page 3
(
(
SUPPLEMENT-1
Page 3
(
(
1
2
A
B
C
D
E
F
G
3
4
5
6
SCHEMATIC DIAGRAM — DECK SECTION (EXCEPT US, CND) —
No mark:TAPE PLAY or REC
0
0
5 . 5
5 . 5
0
3.4
3.5
3.5
6.9
3.4
3.5
3.5
3.4
6.7
3.4
3.4
3.4
3.5
3.5
B
MAIN
BOARD(1/2)
CN606
EXCEPT US,CND
6
2
1
3
5
4
L501
BIAS COIL
S501
0
R515
100k
R511
100k
R513
150
R509
1000p
C517
47p
C509
220p
C511
0
R516
100k
R512
150
R510
100k
R514
220p
C512
47p
C510
47p
C525
47p
C526
2SC1740S-RT
Q501
2SC1740S-RT
Q502
2200p
C537
2200p
C536
2200p
C535
1
2
3
4
5
6
7
8
CN501
9V
M-GND
SW
EH
VREF
Lch
COM
Rch
E
ET501
C541
0 . 1
R540
47
R541
47
C539
1
R539
4 . 7
R537
10k
R538
10k
C538
0 . 0 1
R536
4 . 7 k
R535
4 . 7 k
R534
15k
R533
22k
R507
330k
R503
2 . 2 k
C505
0 . 0 1
C503
2200p
C504
2200p
R504
2 . 2 k
C506
0 . 0 1
R508
330k
2 . 2 k
R501
2 . 2 k
R502
16V
100
C502
16V
100
C501
R517
1k
R518
1k
C519
470p
C520
470p
C521
1
C522
1
R520
47k
R519
47k
R521
47k
R522
47k
C532
0 . 0 1
C531
0 . 0 1
R526
330k
R528
330k
R525
330k
R527
330k
R530
2 . 2 k
R529
2 . 2 k
R531
8 . 2 k
R532
8 . 2 k
C534
2200p
C533
2200p
50V
1
C513
50V
1
C514
TP501
TP502
TP504
TP503
TP505
TP506
TP508
TP509
TP507
8
7
6
5
4
3
2
1
NJM4558M-TE2
IC501
OUTPUT
INPUT
-
INPUT+
GND
INPUT+
INPUT
-
OUTPUT
VCC
8
7
6
5
4
3
2
1
NJM4558M-TE2
IC502
OUTPUT
INPUT
-
INPUT+
GND
INPUT+
INPUT
-
OUTPUT
VCC
C540
4700P
1
2
3
4
5
6
7
8
9
FFC502
9V
PB-Lch
PB-Rch
A-GND
REC-Lch
REC-Rch
M-GND
9V
I-TP-STATE
16V
47
C516
16V
47
C515
1000p
C543
1
C524
1
C523
25V
22
C542
100
R543
100
R544
0 . 1
C545
0 . 1
C546
C527
470p
C528
470p
C530
330p
C529
330p
R523
3 . 3 k
R524
3 . 3 k
R505
15k
R506
15k
470
R545
470
R546
8P
BIAS OSC
BIAS OSC
9P
(CHASSIS)
C403
2 2 k
C404
2 2 k
TAPE MECHANISM
DECK
J
MAIN
BOARD(2/2)
CN605
SUPPLEMENT-1
Page 5
(
(
SUPPLEMENT-1
Page 4
(
(
IC501
HEAD AMP
IC502
HEAD AMP
DECK BOARD
1
2
3
4
5
A
B
C
D
E
F
G
J401
AUDIO IN
C401
0 . 1
C402
0 . 1
C405
1000p
C406
1000p
TP401
TP402
TP403
TP404
TP405
TP406
TP407
TP408
J402
1
2
3
4
5
6
7
8
9
FFC404
9P
AUDIO-L
A-GND
AUDIO-R
HP-GND
H
P-L
H
P-R
AMP-ON
SP-RELAY
GND
PHONES
JACK BOARD
Ver. 1.2
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