Switches Chattering Check; Motor Movement Control; Plunger Timing Chart - Panasonic SA-AK640E Service Manual

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3.4.

Switches Chattering Check

· Each input shall perform chattering check processing.
OPEN-SW 2ms Periodic sampling. It logic-decides by continuation same 5 times.
PLAY-SW 2ms Periodic sampling. It logic-decides by continuation same 5 times.
STOCK-SW 2ms Periodic sampling. It logic-decides by continuation same 5 times.
TOP-SW 2ms Periodic sampling. It logic-decides by continuation same 5 times.
HOME-SW 2ms Periodic sampling. It logic-decides by continuation same 5 times.
UD-SENSOR 2ms Periodic sampling. It logic-decides by continuation same 5 times.
CLOSE-SENSOR 2ms Periodic sampling. It logic-decides by continuation same 5 times.
3.5.

Motor Movement Control

3.6.

Plunger Timing Chart

· Plunger is use for pulling the lever that a switching gear is sit on the lever. When current supply to the plunger to pulling (kick)
switching gear, it will be lift up to engage to 1
be bring done by gravity force and mechanical coil spring on top of it. Plunger use for connect the driving source from motor
to 2 different gear train in the mechanism, the functions of the gear trains are as below:
1. Tray open/close
2. Drive tray to play/stock position and TRV vertical movement
· The plunger movement is define as below:
Kick = H, Release= L
· Each time during plunger activation time (Kick/Release), the motor shall perform a short time CW and CCW rotation for release
the gear side force and ensure complete gear to gear engagement.
Condition
Free
Rotate CW
Rotate CCW
Short Brake
st
gear train. When current supply to plunger is cut off (release), switching gear will
Motor
CW CCW
L L
H L
L H
H H
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