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1
To control the load and eject operations, the clamp switch located in the mechanism unit and the three detecting
switches located in the control unit are used. Depending on the combination of these switches' ON/OFF status, the
A
DSCSNS voltage changes.
The microcomputer can detect the status (A to E) by observing the voltage at the A/D port. The disc size detection (8
or 12cm) is also performed through this status change. The DSCSNS status and the status change in the load and
Status
SW1 S904
SW2 S905
SW3 S903
SW4 S902
B
Mecha
eject modes are shown in the figures 1.4.3 and 1.4.4 respectively.
Fig.1.4.3 DSCSNS status
• LOADING
12 cm
E
B
A
C
C
D
A/D
12EJ
8EJ
DSCSNS
CLAMP
D
CLCONT
LOEJ
MOTOR
8 cm
E
B
A
C
D
E
A/D
12EJ
8EJ
DSCSNS
CLAMP
CLCONT
LOEJ
F
MOTOR
18
1
2
A
B
C
0
0
0
0
0
1
1
0
0
1
1
1
No DISC
DSCSNS signal
A
B
C
STOP
LOAD
DSCSNS signal
A
B
C
STOP
LOAD
2
3
D
E
1
0
1
0
0
0
1
0
CLMP
D
C
B
E
STOP
It changes Load/Cariage.
B
A o r B
B
E
STOP
Dead zone
CX-3057
3
4
SW_ON
SW_OFF
4
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