Sony HCD-EC68P Service Manual - Page 38

Schematic, Diagram, Key Printed, Wiring, Boards

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HCD-EC68P/EC78P 6-15. PRINTED WIRING BOARDS - KEY Section - • See page 27 for Circuit Boards Location. • : Uses unleaded solder. 1 2 3 4 5 A KEY CD BOARD (EC78P:UK) SW309 ; SW308 R410 DISC 3 SW309 B ; (EC68P/EC78P:US,CND) R409 A PANEL BOARD CN303 (Page 36) 12 SW307 SW307 DISC 2 DMPORT (EC68P/EC78P:US,CND) SW310 DISC SKIP/ EX-CHANGE R411 R408 R407 SW306 DISC 1 SW306 CD (EC68P/EC78P:US,CND) 14 1-875-492- (14) C MAIN BOARD CN605 JACK BOARD (Page 30) C 1 9 KEY POWER BOARD SW301 R491 STANDBY 3 (NC) R492 C491 W401 1 C495 1-875-493- B C496 14 D JW491 PANEL (14) BOARD CN306 (Page 36) 14 1-875-491- (14) J491 AUDIO IN E J492 PHONES REG BOARD 32 1 IC601 C698 JW614 W610 1 3 14 1-875-489- (14) D MAIN BOARD (Page 30) SW301, SW306 - 310 6-16. SCHEMATIC DIAGRAM - KEY Section - 1 2 3 4 5 KEY CD BOARD A (EC78P: UK) R411 15k R410 6.8k R409 3.9k R408 2.7k R407 2.2k TP415 KEY-1 1 TP416 GND 2 A SW310 DISC SKIP/ EX-CHANGE SW309 SW308 DISC 3 SW307 DISC 2 SW306 DISC 1 PANEL BOARD CN303 (Page 37) B DMPORT CD (EC68P/EC78P: US, CND) KEY POWER BOARD (Page 37) SW301 / STANDBY W401 3P PANEL BOARD CN306 TP409 C TP410 1 KEY-0 2 GND B 3 KEY-SW-ON (NC) JACK BOARD D 1 AUDIO-L TP491 A-GND TP492 C AUDIO-R HP-GND TP493 TP494 MAIN BOARD (1/3) CN605 E (Page 31) HP-L HP-R AMP-ON SP-RELAY TP495 TP496 TP497 TP498 9 GND R492 22k R491 22k C496 1000p C495 1000p C491 0.1 J491 AUDIO IN J492 PHONES REG BOARD F IC601 +9V REGULATOR IC601 TA7809S 17.1 1I 8.9 GO3 2 W610 3P C698 G 0.1 3 OUT 2 GND D 1 IN MAIN BOARD (1/3) (Page 31) HCD-EC68P/EC78P 38 38

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HCD-EC68P/EC78P
HCD-EC68P/EC78P
38
38
PANEL
CN303
BOARD
A
(1/3)
BOARD
C
MAIN
CN605
MAIN
D
BOARD
(1/3)
PANEL
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
SW306
SW307
DISC 2
SW308
DISC 3
CD
DMPORT
SW309
SW310
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
9
GND
0.1
C698
I
O
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
5
3
1
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
1
9
C491
C495
C496
JACK BOARD
C698
1
3
2
SW301,
SW306 - 310
1
2
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
1
3
JW614
W610
REG BOARD
IC601
A
PANEL
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
PANEL
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
1
2
3
4
5
(NC)
(Page 36)
(Page 36)
(Page 30)
(Page 30)