Read Sony HCD-EC55 / HCD-EC77 / HCD-GX99 Service Manual online
8
8
HCD-EC55/EC77/GX99
HCD-EC55/EC77/GX99
PRINTED WIRING BOARDS — KEY SECTION —
•
:Uses unleaded solder.
1-872-058-
1-872-058-
1-872-056-
1
STANDBY
DISPLAY
+
–
DSGX
EQ
13
(13)
R407
R408
R409
R410
R411
DISC 2
DISC 3
DISC 1
R418
R417
R416
R415
R414
13
(13)
14
(14)
14
(14)
R407
R408
R409
R410
R411
DISC 2
DISC 3
DISC 1
DISC SKIP/
EX-CHANGE
R418
R417
R416
R415
R414
1-872-057-
13
(13)
14
(14)
PANEL BOARD
W304
PANEL BOARD
W306
F
H
PANEL BOARD
W305
G
SW310
SW318
SW316
SW314
PLAY MODE/
TUNING MODE
KEY-RIGHT BOARD
SW310
SW309
SW308
SW307
SW306
W402
SW318
SW317
SW315
SW314
CN403
PLAY MODE/
TUNING MODE
KEY-RIGHT BOARD
KEY-CD BOARD
SW302
SW301
R404
LED302
CN401
KEY-LEFT BOARD
SUPPLEMENT-1
Page 6
(
(
SUPPLEMENT-1
Page 6
(
(
SUPPLEMENT-1
Page 6
(
(
1
2
A
B
C
D
E
F
G
H
3
4
5
6
7
SCHEMATIC DIAGRAM — KEY SECTION —
F
PANEL
BOARD
W304
G
PANEL
BOARD
W305
H
PANEL
BOARD
W306
SUPPLEMENT-1
Page 7
SUPPLEMENT-1
Page 7
SUPPLEMENT-1
Page 7
(
(
(
(
(
(
KEY-RIGHT BOARD
KEY-LEFT BOARD
KEY-CD BOARD
R404
1k
T P409
T P410
T P411
T P412
SLR-325VCT31P
LED302
SW301
SW302
DISPLAY
1
2
3
4
4P
CN401
KEY- 0
GND
AVCC
STBY-LED
STANDBY
R409
10 k
R410
22 k
R407
2.2k
R408
4.7k
R411
47k
TP413
TP414
SW306
DISC 1
SW307
DISC 2
SW308
DISC 3
SW309
SW310
2P
W402
1
KEY- 1
2
GND
DISK SKIP/
EX-CHANGE
EX-CHANGE
R416
10 k
R417
22 k
R414
2.2k
R415
4.7k
R418
47k
TP415
TP416
SW314
SW315
SW316
SW317
DSGX
SW318
EQ
1
2
2P
CN403
KEY- 2
GND
PLAY MODE
/TUNING MODE
/TUNING MODE
1
2
3
4
5
A
B
C
D
E
Ver. 1.2
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