120 Error Code - Lexmark C752 Service Manual

Step Action and questions
4 Check the printer is setting on a solid, flat surface.
Is the printer setting on a solid flat surface?
5 The front contamination shield is attached to the front
plate of the ITU frame and lies on the top of the ITU
belt.
Is the front contamination shield lying on the ITU belt.
6 Remove the ITU and check the ITU belt position. If the
belt has shifted to the front or to the rear it should be
replaced. The belt must not shift more than 4 mm in
either direction. Check by making the measurements
as shown. The lower limit is 3.1 mm, the high limit is
8.1 mm, and the optimum position is 5.6 mm.
Has the ITU Belt shifted to the front or to the rear?

120 error code

This error code displays whenever an incorrect hot roll fuser lamp is installed.
Step Action and questions
1 Check to make sure that the line voltage to the printer
matches the line voltage selection switch on the LVPS.
Does the line voltage match the LVPS line voltage
selection?
2 Is the correct fuser assembly installed in the printer?
3 Check for continuity between pins 1 and 2 on the AC
fuser connector on the fuser assembly
Do you measure continuity?
Yes No
Go to step 5 Inform the
customer that the
printer must be
setting on a solid
flat surface.
Go to step 6 Position the
shield on top of
the belt.
Replace the "ITU Treat as a belt
assembly" on stall or signal
page 4-40 and communications
run the "Belt problem. See
Tracking (ITU "100 ITU Error"
4th point on page
adjustment)" on
page 3-18.
Yes No
Go to step 2 Set the line
voltage selection
switch to match
the line voltage to
the printer.
Go to step 3 Replace the
"Fuser
assembly" on
page 4-32
the correct fuser
assembly.
Replace the Replace the
"LVPS "Fuser
assembly" on assembly" on
page 4-42. page
Diagnostic information
5060-2XX
2-41.
with
4-32.
2-45