Service Checks; 100 Itu Error - Lexmark C750 Service Manual

5060-00x

Service checks

100 ITU Error

A 100 ITU error indicates that the printer did not detect the ITU belt home sensor. Before proceeding with this
service check make sure that the Second Transfer Roll is correctly installed. After you reinstall the Second
Transfer Roll, check to see if a 100 ITU error is still displayed. If a 100 ITU error is still being displayed, continue
with this check.
Step Action and questions
1 Make sure all packing material is removed from the
printer. The detensioner is packing material located
underneath the toner cartridges. Make sure the ITU
detensioner is removed. Remove the detensioner by
pulling up on the red handle on the right side of the
ITU.
Note: All the print cartridges must be removed to gain
access to the detensioner packing material.
Has all packing material been removed from the
printer?
2 Check the printer is setting on a solid flat surface.
Is the printer setting on a solid flat surface?
3 Inform the customer that the printer must be setting on
a solid flat surface or install the printer on a solid flat
surface as available.
Recheck the printer to see if a 100 ITU error is still
displayed.
Is a 100 ITU error still displayed?
4 Make sure the ITU cleaner gear (A) is turning. Observe
the gear by opening the front paper jam door above the
integrated paper tray 1. Observe the white cleaner gear
during POR. The gear should turn slowly and smoothly
for approximately 8 seconds before the printer displays
a 100 ITU error.
Is the ITU Cleaner Gear turning?
5 Check the ITU release lever for correct operation. The
ITU release lever is the blue lever located on the left
upper side frame above the ITU opening and can be
seen by opening and lowering the MPF assembly.
When locked the lever should be at the 6 o'clock
position. When unlocked it should be in a 3 o'clock
position. Undue pressure is not required to operate the
lever.
Does the ITU release lever operate correctly?
2-42
Service Manual
Yes No
Go to step 2 Remove any
remaining packing
material from the
printer
Go to step 3 Go to step 4
Go to step 4 Problem solved
Go to step 5 Go to step 9
Go to step 6 Repair as
necessary