Printed Wiring Boards - Key Section; Schematic Diagram - Key Section - Sony HCD-EC68P Service Manual

HCD-EC68P/EC78P

6-15. PRINTED WIRING BOARDS - KEY Section -

• See page 27 for Circuit Boards Location.
1 2
A
KEY CD BOARD
(EC78P:UK)
SW309
SW308
R410
DISC 3
SW309
B
R409
(EC68P/EC78P:US,CND)
MAIN
C
BOARD
CN605
(Page 30)
JACK BOARD
C
1 9
R491
R492
C491
C496
D
JW491
J491
AUDIO IN
J492
PHONES
E
HCD-EC68P/EC78P
• : Uses unleaded solder.
3 4 5
PANEL
A
BOARD
CN303
(Page 36)
SW310
DISC SKIP/
EX-CHANGE
R411
SW307
SW306
R407
1 2
DISC 2
DISC 1
SW307 DMPORT CD
SW306
(EC68P/EC78P:US,CND)
(EC68P/EC78P:US,CND)
R408
KEY POWER BOARD
SW301
STANDBY
W401
B
14
PANEL
14
(14)
BOARD
CN306
1-875-491- (14)
(Page 36)
REG BOARD
SW301,
SW306 - 310
3 2 1
IC601
C698
JW614
W610
1 3 14
(14)
1-875-489-
D MAIN
BOARD
(Page 30)

6-16. SCHEMATIC DIAGRAM - KEY Section -

1
KEY CD BOARD
A
(EC78P: UK)
SW310
DISC SKIP/
EX-CHANGE
14
(14) B
1-875-492-
KEY POWER BOARD
C
JACK BOARD
D
1 AUDIO-L
A-GND
AUDIO-R
C
HP-GND
HP-L
MAIN
BOARD
HP-R
(1/3)
CN605
AMP-ON
(Page 31)
E
SP-RELAY
9 GND
REG BOARD
F
G
38 38
2 3
R411 R410 R409 R408 R407
TP415
15k 6.8k 3.9k 2.7k 2.2k
TP416
SW309 SW307 SW306
SW308
DISC 3 DISC 2 DISC 1
DMPORT CD
(EC68P/EC78P: US, CND)
SW301
/
W401
STANDBY
3P
TP409
KEY-0
1
TP410
GND
2
KEY-SW-ON
3
TP491
TP492
R492 R491
TP493
22k 22k
TP494
TP495
TP496
TP497
TP498
C496 C495 C491
0.1
1000p 1000p
IC601
+9V REGULATOR
IC601
TA7809S
17.1 8.9
I O
1 3
G
2
W610
3P
C698
OUT
0.1 3
D
GND
2
IN
1
MAIN
BOARD
(1/3)
(Page 31)
4 5
KEY-1 1
A
GND 2
PANEL
BOARD
CN303
(Page 37)
(Page 37)
PANEL
BOARD
CN306
B
(NC)
J491
AUDIO IN
J492
PHONES