Sony HCD-EC55 Service Manual page 84

HCD-EC55/EC77/GX99
Ver. 1.2
Q Q
PRINTED WIRING BOARDS — KEY SECTION —
3 7 6 3 1 5 1 5 0
1 2 3
KEY-LEFT BOARD
A
B
C
KEY-RIGHT BOARD KEY-RIGHT BOARD
D
R418 R418 R417 R417
EQ DSGX
E T E
L 1 3 9 4 2 2 9 6 5 1 3
F
KEY-CD BOARD
W402
G
SW309
SW307
SW308
DISC 2 DISC 2
DISC 3 DISC 3
H
w w w
HCD-EC55/EC77/GX99
• :Uses unleaded solder.
4 5 6
F
PANEL BOARD
W304
( (
SUPPLEMENT-1
13 14
Page 6
R404
(13) (14)
1-872-056-
R416 R416 R415 R415 R414 R414
– +
CN403
1-872-057-
PANEL BOARD
H
W306
( (
SUPPLEMENT-1
Page 6
PANEL BOARD
G
W305
( (
SUPPLEMENT-1
Page 6
SW310 SW310
DISC SKIP/
EX-CHANGE
SW306
13 14
DISC 1 DISC 1
(13) (14)
1-872-058- 1-872-058-
x a o
. i
http://www.xiaoyu163.com
SCHEMATIC DIAGRAM — KEY SECTION —
7
1
A
B
KEY-RIGHT BOARD
C
R418
47k
SW318
EQ
13 14
D
(13) (14)
Q Q
3 7 6
KEY-CD BOARD
E
SW310
DISK SKIP/
EX-CHANGE
u 1 6 3
y
8 8
http://www.xiaoyu163.com
2 4
8 9 9
2 3 4
KEY-LEFT BOARD
R404
T P409
1k
1 KEY- 0
T P410
2 GND
T P411
3 AVCC
SW302 SW301
T P412
4 STBY-LED
DISPLAY
CN401
LED302
SLR-325VCT31P
STANDBY
R417 R416 R415 R414
TP415
22 k 10 k 4.7k 2.2k
TP416
SW317 SW316 SW315 SW314
DSGX
PLAY MODE
/TUNING MODE
3 1 5 1 5 0 8 9
R411 R410 R409 R408 R407
47k 22 k 10 k 4.7k 2.2k TP413
TP414
SW309 SW308 SW307 SW306
DISC 3 DISC 2 DISC 1
m
c o
.
2
8 9 9
5
F
PANEL
BOARD
4P
W304
( SUPPLEMENT-1 (
Page 7
1 KEY- 2
H
2 GND
PANEL
CN403 2P
BOARD
W306
( SUPPLEMENT-1 (
Page 7
2 4 9 8 2 9 9
KEY- 1
1
G
2 GND
PANEL
W402 2P
BOARD
W305
( SUPPLEMENT-1 (
Page 7