HCD-EC68/EC78
HCD-EC68/EC78
34
34
R407
R408
R409
R410
R411
KEY CD BOARD
R491
R492
1
9
C491
C495
C496
JACK BOARD
C698
1
2
SW306
SW307
SW308
SW309
SW310
1
3
SW301
W401
KEY POWER BOARD
JW491
1
3
JW614
W610
REG BOARD
IC601
1-875-492-
12, 13
(12, 13)
12, 13
(12, 13)
12, 13
(12, 13)
12, 13
(12, 13)
DISC 1
DISC SKIP/
EX-CHANGE
DISC 2
DISC 3
;
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)
(SUFFIX-12)
(SUFFIX-12)
(SUFFIX-13)
(SUFFIX-13)
7-15. PRINTED WIRING BOARDS - KEY Section -
•
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
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
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
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
7-16. SCHEMATIC DIAGRAM - KEY Section -
Note:
Refer to “SUFFIX-12/SUFFIX-13 DISCRIMINATION
OF PANEL BOARD” (page 3) of the servicing notes
for suf
fi
x-12 and suf
fi
x-13.
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299