Lexmark W820 Service Manual page 187

Removal
1.
Remove Mailbox Left Cover Assembly.
2.
Remove the Mailbox Rear Cover.
3.
Disconnect the thirteen P/Js from the Mailbox Control PWB.
4.
Remove the four screws securing the Mailbox Control PWB to the Mailbox frame,
and remove the PWB.
WARNING: Wear a grounded, electrostatic wrist strap and use caution when working
with the Mailbox Control PWB. Static electricity can damage the sensitive electronics of
the PWB. Handle the PWB by the edges. Never touch any of the ICs that are mounted on
the PWB.
Replacement
1.
Reinstall the Mailbox Control PWB to the Mailbox frame, and use four screws to
secure it to the frame.
2.
Make sure all of the Full Stack Actuators move freely between the arms of the Full
Stack Sensors.
3.
Reconnect the thirteen P/Js (P/J 800 ~ P/J 812) to the Mailbox Control PWB.
4.
Reinstall the Mailbox Rear Cover.
5.
Reinstall the Mailbox Left Cover Assembly.
4025 Options
4-45
Repair Information