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No. 2D730-148E*O
3.27
Cleaning the Palm Switch
<<Items required for cleaning>>
l
Gauze
l
Air spray
l
Tweezers
3.27.1
Cleaning procedures for the old-type palm switch
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Remove the connector from the panel and remove the palm switch.
Press the two tabs on the sides of the palm switch and remove the top cover of the palm
switch. Then, remove the ball.
Disconnect the connection cable between the dial board and the main board.
Do not forcibly disconnect the cable connector.
Clean the detection shafts and 45" bearing (shaded sections in the figure) with a piece of
gauze.
Clean out the inside of the case using an air spray.
Take appropriate
measures to prevent dust from flying out. Check for foreign matter inside
the case.
Clean the dial rotation surface using a cotton swab.
Clean the gap between the dial and the cover (circumference)
using the air spray.
Clean the inside of the dial unit using the air spray.
Connect the cable between the dial board and the main board.
Bend the cable so that it does not interfere with the ball.
After cleaning the ball, place it back into the palm switch and reinsert the top cover.
Confirm that there are no abnormalities
in ball rotation and dial rotation.
Reconnect the connector to the palm switch and reinstall the palm switch at its original
position on the panel.
3-83
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