22
22
HCD-EP305
6-6. Printed Wiring Board CASSETTE Section
• See page 15 for Circuit Boards Location.
6-7. Schematic Diagram CASSETTE Section
0
1.2
1.4
4.1
0
0
8.1
0
0
4.1
1.4
1.2
0
0.6
0
0.6
0
0
0
0
3.6
9.7
9.7
9.3
No mark:FM
R-CH (REC/PB)
L-CH (REC/PB)
(ERASE)
HRPE701
(REC/PB ERASE HEAD)
CN701
4P
0.0018
15k
15k
0.0018
SW701 (4/6)
(REC/PB)
REC
R
PB
SW701 (2/6)
(REC/PB)
REC
r
PB
SW701 (3/6)
(REC/PB)
REC
t
PB
0.0027
0.022
+
50V
0.022
0.0068
Q706
REC BIAS OSC
SW701 (6/6)
(REC/PB)
REC
T
PB
Q704
2SC945
MUTING
CONTROL
SWITCH
25V
+
+
+
50V
5.6k
1.2k
0.1
SW701 (1/6)
(REC/PB)
REC
R
PB
0.1
50V
+
+
0.022
50V
+
+
0.1
50V
+
+
0.1
5.6k
1.2k
SW701 (5/6)
(REC/PB)
REC
r
PB
50V
+
IC701
ALC, REC/PB AMP
Q701, 702
MUTING
50V
50V
82k
2SC945
2SC945
2SC945
82k
+
+
CASSETTE BOARD
0.0015
0.0015
330
2SD1616-L
50V
100k
1N4148TP
1N4148TP
4.7k
Q703
2SC945
MUTING
CONTROL
SWITCH
CASSETTE BOARD
1
2
3
4
5
6
E
E
E
E
E
K
A
A
K
SW701
(REC/PB)
REC
PB
HPRE701
REC/PB ERASE
HEAD
A
B
C
1
2
3
4
5
Ref. No.
Location
D701
B-4
D702
B-4
IC701
B-3
Q701
A-4
Q702
B-4
Q703
B-4
• Semiconductor
Location
• See page 15 for Waveforms.
• See page 28 for IC Block Diagrams.
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