Sony HCD-EC68P - Printed Wiring Boards - KEY Section; Schematic Diagram - KEY Section

HCD-EC68P/EC78P
HCD-EC68P/EC78P
3838
PAN EL
CN303
BOARD
A
(1/3)
BOARD
C
MAIN
CN605
MAIN
D
BOARD
(1/3)
PAN EL
CN306
BOARD
B
17.1 8.9
R407
2.2k
TP415
TP416
R408
2.7k
R409
3.9k
R410
6.8k
R411
15k
KEY CD BOARD
DISC 1
SW306SW307
DISC 2
SW308
DISC 3
CDDMPORT
SW309SW310
DISC SKIP/
EX-CHANGE
KEY-1
GND
1
2
J491
AUDIO IN
C491
0.1
C495
1000p
C496
1000p
TP491
TP492
TP493
TP494
TP495
TP496
TP497
TP498
J492
PHONES
R491
22k
R492
22k
JACK BOARD
1
A-GND
AUDIO-L
HP-GND
AUDIO-R
HP-R
HP-L
SP-RELAY
AMP-ON
9GND
0.1
C698
IO
G
TA7809S
IC601
1
3
2
REG BOARD
+9V REGULATOR
IC601
TP409
TP410
1
2
3
3P
W401
KEY-0
GND
KEY-SW-ON
(NC)
KEY POWER BOARD
STANDBY
SW301
/
B
531
C
D
E
F
G
4
A
2
3
2
1
3P
W610
OUT
GND
IN
(EC68P/EC78P: US, CND)
(EC78P: UK)
(Page 37)
(Page 31)
6-16. SCHEMATIC DIAGRAM - KEY Section -
(Page 37)
(Page 31)
6-15. PRINTED WIRING BOARDS - KEY Section -
• : Uses unleaded solder.
• See page 27 for Circuit Boards Location.
R407
R411
R409
R410
R408
KEY CD BOARD
R491
R492
19
C491
C495
C496
JACK BOARD
C698
1
3
2
SW301,
SW306 - 310
12
SW310
SW307
SW307
SW309
(EC78P:UK)
(EC68P/EC78P:US,CND)
(EC68P/EC78P:US,CND)
(EC68P/EC78P:US,CND)
SW308
SW309
SW306
SW306
1
3
SW301
W401
KEY POWER BOARD
JW491
13
JW614
W610
REG BOARD
IC601
A
PAN EL
BOARD
CN303
1-875-492-
14
(14)
14
(14)
14
(14)
14
(14)
DISC 1
DISC SKIP/
EX-CHANGE
DISC 2
DMPORT CD
DISC 3
;
;
D
MAIN
BOARD
B
PAN EL
BOARD
CN306
C
MAIN
BOARD
CN605
1-875-489-
1-875-493-
1-875-491-
STANDBY
J492
J491
PHONES
AUDIO IN
B
A
C
D
E
1234 5
(NC)
(Page 36)
(Page 36)
(Page 30)
(Page 30)