Lexmark W820 Service Manual page 240

Removal
1.
2.
3.
Replacement
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2.
3.
4.
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6.
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8.
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Service Manual
Remove the Paper Tray associated with the No Paper Sensor you are removing.
Squeeze the Sensor latches and remove the No Paper Sensor from the frame.
Disconnect the P/J from the Sensor.
Reconnect the P/J to the Sensor.
Push the No Paper Actuator up and out of the way.
Position the Sensor with the arms of the Sensor facing the Actuator.
Reinstall the No Paper Sensor into the slot in the frame by first inserting the front
latch of the Sensor through the front opening in the frame.
Press in on the rear latch and insert it into the rear opening.
Release the rear latch and the Sensor snaps into place.
Release the Actuator and make sure it moves freely between the arms of the
Sensor.
Reconnect the P/J to the Sensor.
Reinstall the Paper Tray.
4025-XXX