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E
OPERATION CIRCUIT
S912
( DECK 1/2 )
S911
( REV MODE )
S910
(
)
S909
( )
S915
(
OPEN )
S914
( COUNTER
RESET )
S913
( COUNTER
DISPLAY )
FW901
1
2
3
4
5
5V
6
7
8
A
MAIN CIRCUIT
A
R233
100
B
R234
100
C
D
E
(5V) 0V
F
G
25
26
:POSITIVE VOLTAGE LINE
Q901
S907
( )
DTA143EUT106
LED DRIVE
5V
S906
(
)
S905
0V
( DOLBY NR )
S904
( REC PAUSE )
R915
680
S903
D904
R917
( TAPE EDIT )
MA111TX
680
STOP : 0V
5V
S901
(
OPEN )
S900
(
)
C215
16V10
C216
16V10
4.7V
4.7V
4.7V
8
9
10
IC202
MC14066BFEL
SIGNAL CONT.
7
6
5
Q108
8.3V
DTC143EUT106
(0V)
SWITCHING
8.3V (0V)
27
:PLAYBACK SIGNAL LINE
D907
SML79455C
( )
Q903
R916
330
DTC143EUT106
5V
LED DRIVE(FWD)
0V
0V
D905
SML79455C
( )
R914
Q904
330
DTC143EUT106
LED DRIVE(REV)
2.6V
0V
0V
Q902
DTC143EUT106
LED DRIVE
0V
(0V)
4.7V
8.3V
9.6V
11
12
13
14
4
3
2
1
9.6V
RS-DV290(EG) OPERATION, MAIN CIRCUIT DIAGRAM
28
29
4.2V
0V
30
3
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