Installation - Lexmark X543 Service Manual

7.
Detach the re-drive belt (F) from the pulley on the fuser exit roll shaft.
8.
Disconnect the fan power cable from JFAN1 on the controller board.
9.
Disconnect the bin full sensor cable from JPJ1 on the controller board.
10.
Remove the top cover, being careful to route the bin full sensor cable through the top of the controller board
cage.

Installation

Warning: Make sure the belt is attached to the gear (B), Also; check the tension spring to make sure it is
properly attached to the top cover (C). The following illustration shows the properly attached spring
and belt.
Warning: After performing any repair that involves detaching the belt from the re-drive pulley on the fuser, run
approximately 30 test pages, both simplex and duplex, to ensure the belt is performing properly.
While the pages are running, listen for any noises, buzzing, clicking or rattling, that might indicate
improper routing of the re-drive belt.
E
F
7525-xxx
4-11
Repair information