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2.5 DETECTION OF A DISC BY SENSORS AT THE TIME LOADING
A
A disc is detected by a phototransistor, right and left load switches and INIT switch.
Phototransistor: Light emitted by the LED mounted on the underside of the roller is reflected by the lighting
conductor on the shutter. When the light is shielded by the disc, the phototransistor is brought to its Hi status.
Load switch, right: It is mounted on the right side of the disc insertion slot. When the white resin lever is pressed to
the right by the disc, the switch is brought to its Hi status.
Load switch, left: It is mounted on the left side of the disc insertion slot. When the white resin lever is pressed to the
left by the disc, the switch is brought to its Hi status.
INIT switch: It is mounted at the right back of the stage. When the resin arm moves from its home position, the
switch is brought to its Hi status.
B
C
The group of sensors recognizes the disc state as shown below.
D
Photo
Detection
switch, right
Detection
E
switch, left
INIT SW
F
32
1
2
Hi
Lo
Hi
Lo
Hi
Lo
Hi
Lo
Loading starts
Ejection stops
CX-3168
2
3
INIT switch
Load switch
Load switch
Phototransistor
Eject
Load
Loading completes
3
4
4
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