Lexmark X422 Laser MFP Service Manual page 155

4. Support the left side with the left hand while separating the left
hinge.
Note: In the next step, note a loaded compression spring [A]
on the left side and under the metal plate.
5. Rotate the metal plate until the sensor can be accessed.
6. Disconnect the cable to the sensor and remove the sensor by
pushing on the latches underneath the sensor and housing.
7. Install the new sensor and reconnect the cable.
8. Reinstall the metal plate. Make sure the compression spring is
in the proper location and captured at its ends.
9. Rotate the metal plate to keep the spring positioned. Reconnect
the left hinge and then the right hinge.
A
7001–001
Repair information
4-43