Lexmark C77X, Service Manual

Page: 59 / 480

Diagnostic information
2-15
5061
2 Check the ITU release lever for correct operation. The
ITU release lever is the black 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?
Go to step 3 Repair as
necessary.
3 Check the second transfer roll installation.
Is it installed correctly?
Go to step 4 Reinstall the
second transfer
roll.
4 Check the display error log in the Diagnostic Menu. Is
100.01 ITU preceded in the log by a 100.02 ITU Error? Go to “100.02
ITU error
service check”
on page 2-17
.
Go to step 5
5 Remove the ITU assembly and check that the sensor
cable is seated in the handle of the ITU assembly
correctly.
Note: The sensor connector is located on the side of
the ITU handle assembly.
Is the cable seated correctly?
Go to step 6 Reinstall the
cable correctly.
Check again for a
100.01 ITU Error.
If 100.01 ITU
Error is
displayed, go to
step 6.
6 The front contamination shield is attached to the font
plate of the ITU frame and lies on the top of the ITU
belt.
Is the front contamination shield lying on the belt?
Go to step 7 Position the
shield on top of
the belt.
7
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 100.01 ITU error.
Is the ITU Cleaner Gear turning?
Go to step 11 Go to step 8
Step Actions and questions Yes No