SECTION 6
MAINTENANCE
168
Cleaning the Lift Arm Sensor
The lift arm sensor is used to detect the position of the shaft/cams that drive the lift arms.
The lift arm cup/flag rotates counter-clockwise through the lift arm sensor. About 1/3 of the cup is open.
To verify that the Lift Arms are at the “UP” position, the lift arm motor drives the shaft/cams/cup
counter-clockwise until the lift arm sensor reads closed (just interrupted by flag/cup).
To verify that the Lift Arms are at the “DOWN” position, the lift arm motor drives the
shaft/cams/cup counter-clockwise until the lift arm sensor reads open.
Cleaning:
Eject/Remove the Service Station, to provide access to the lift arm sensor.
Make sure the Lift Arms are in the “Down” position, so both arms of the sensor are exposed.
Using compressed air, clean the sensor. Be careful to only direct the air into the sensor.
Flag/Cup
(Lift Arm in
UP Position)
Cup is rotated until
sensor is interrupted
by leading edge of
flag.
Printer detects Lift
Arms as UP, once
sensor is interrupted.
Lift Arms Down.
Cup is rotated until
sensor is open.
(Trailing edge of flag
just leaves sensor.)
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