HCD-EC68/EC78
HCD-EC68/EC78
26
26
7.4
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
7.4
0.3 (5.2)
0 (0.2)
0.3 (5.2)
0.3 (5.2)
0.3 (5.2)
6
2
1
3
5
4
L501
BIAS OSC
S501
(REC/PB)
0
R515
100k
R511
100k
R513
150
R509
1000p
C517
47p
C509
220p
C51
1
0
R516
100k
R512
150
R510
100k
R514
220p
C512
47p
C510
47p
C525
47p
C526
2SC1740S-RT
Q501
2SC1740S-RT
Q502
2200p
C537
2200p
C536
2200p
C535
1
2
3
4
5
6
7
8
8P
CN501
9V
M-GND
SW
EH
VREF
Lch
COM
Rch
E
ET501
R540
47
R541
47
C539
1
R539
4.7
R537
10k
R538
10k
C538
0.01
R536
4.7k
R535
4.7k
R534
15k
R507 330k
R503
2.2k
C505
0.01
C503
2200p
C504
2200p
R504
2.2k
C506
0.01
R508
330k
2.2k
R501
2.2k
R502
16V
100
C502
16V
100
C501
R517
1k
R518
1k
C519
470p
C520
470p
C521
1
C522
1
R520
47k
R519
47k
R521
47k
R522
47k
C532
0.01
C531
0.01
R526
330k
R528
330k
R525
330k
R527
330k
R530
2.2k
R529
2.2k
R531
8.2k
R532
8.2k
C534
2200p
C533
2200p
50V
1
C513
50V
1
C514
TP501
TP502
TP504
TP503
TP505
TP506
TP508
TP509
TP507
C540
4700
16V
47
C516
16V
47
C515
1000p
C543
25V
22
C542
100
R543
100
R544
0.1
C545
0.1
C546
C527
470p
C528
470p
C530
330p
C529
330p
R523
3.3k
R524
3.3k
R505
15k
R506
15k
470
R545
470
R546
8
7
6
5
4
3
2
1
NJM4558V
-TE2
IC502
8
7
6
5
4
3
2
1
NJM4558V
-TE2
IC501
0.1
C524
0.1
C523
R533
22k
PB AMP
IC501
IC502
REC AMP
(CHASSIS)
DECK BOARD
REC-Rch
REC-Lch
I-TP-STATE
9V
1
A-GND
9
M-GND
PB-Rch
9V
PB-Lch
Q501,502
OSC
TAPE
MECHANISM
DECK
PB
REC
-1
-2
7
D
B
6
9
F
5
3
G
1
C
E
H
8
4
A
2
E
B
E
B
1
8
Q501
Q502
L501
BIAS OSC
CN501
C501
C502
C513
C514
C515
C516
C540
C542
JW501
JW502
JW503
JW504
JW505
JW506
JW507
JW508
JW509
JW510
ET501
9
1
R501
R502
R503
R504
R505
R506
R507
R508
R509
R510
R511
R512
R513
R514
R515 R516
R517
R518
R519
R520
R521
R522
R523
R524
R525
R526
R527
R528
R529
R530
R531
R532
R533
R534
R535
R536
R537
R538
R539
C503
C504
R540
C505
R541
6
4
3
1
C506
R543
R544
R545
C509
R546
C510
C511
C512
C519
C520
C521
C522
C523
C524
C525
C526
C527
C528
C529
C530
C531
C532
C533
C534
C535
C536
C537
C538
C539
C543
C545
C546
JR501
JR502
JR503
DECK BOARD
IC501
IC502
-2
-1
S501
S501
(REC/PB)
PB REC
TAPE
MECHANISM
DECK
1-875-501-
11
(11)
A
B
C
D
1
2
3
4
(CHASSIS)
7-3. PRINTED WIRING BOARD - DECK Board (Except EC68: UK model) -
• See page 23 for Circuit Boards Location.
•
: Uses unleaded solder.
7-4. SCHEMATIC DIAGRAM - DECK Board (Except EC68: UK model) -
• See page 37 for waveforms.
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