CX-3164
18
1
2
4
1
2
3
4
C
D
F
A
B
E
The load/eject operation is controlled with the status changes of the HOME switch (also used for clamp detection) on the
mechanism unit and the three switches on the control unit. The ON/OFF statuses of these switches are respectively
detected at the input port of the microcomputer.
Using the detection results in the microcomputer, each status (A to E) is determined. The disc size detection (8 or 12 cm)
is also performed through this status change. Each status is shown in Fig.1.4.3 and the status change in Fig.1.4.4.
Fig.1.4.3 DSCSNS status
Status A B C
D E
DSCSNS SW1(S903)
OFF
ON
ON
ON
ON
8SW SW2(S905)
ON
ON
OFF
OFF
ON
12SW
SW3(S904)
ON ON ON OFF ON
HOME
SW4(S901) OFF OFF OFF OFF ON
Mechanism state
With no disc
Clamp state
SW_ON
SW_OFF
12EJ
8EJ
DSCSNS
HOME
CLCONT
LOEJ
MOTOR
STOP
LOAD
STOP
MOTOR
Dead zone
STOP
LOAD
STOP
It changes Load/Carriage
LOADING
12cm
8cm
SW CHANGES
CONTROL
CONTROL
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