Unprinted Spots; Partially Dark Or Light Print - Lexmark C925 Service Manual

5041-030

Unprinted spots

Step Action and questions
1 Check the paper in the tray for moisture. Is the paper
moist?
2 Check the LED print head for moisture on the imaging
surface. Is there any moisture on the LED surface?
3
Does the imaging unit's photo developer drum have
any dew on it?
4 Remove and reinstall the imaging unit. Does this fix the
problem?
5 Replace the imaging unit. Does this resolve the issue?
6
Check the transfer roll for dents. Are there any dents in
the transfer roll?
7
Remove the transfer belt and check the surface for
waviness or other irregularities. Are the surface
irregularities?

Partially dark or light print

Step Action and questions
1 Check the drum on the imaging unit for over exposure
to light. Has it been over exposed to light?
2 Replace the affected imaging unit. Did this fix the
issue?
3 Check the imaging unit for proper installation. Is it
properly installed?
4 Reinstall the imaging units. Did this fix the issue?
5 Clean the contacts on the imaging unit and the printer.
Did this resolve the issue?
2-8
Service Manual
Yes No
Replace the Go to step 2.
paper in the tray.
Wipe the LED Go to step 3.
imaging surface
with a lint free
cloth.
Let the drum dry Go to step 4.
out. Do not wipe
the drum with a
cloth.
Problem resolved Go to step 5.
Problem resolved Go to step 6.
Replace the Go to step 7.
transfer roll.
Replace the Contact your
transfer belt. second level
support.
Yes No
Go to step 2 Go to step 3
Problem Go to step 3
resolved.
Go to step 5. Go to step 4
Problem Go to step 5
resolved.
Problem Contact your
resolved. second level
support.
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