Transparency Print Quality Is Poor - Lexmark C78x Service Manual

5061
Step Actions and questions
3 ITU—Make sure that the ITU legs are properly seated
onto the rail at the right side of the printer. This is
visible by removing the yellow print cartridge.
Is the ITU seated correctly?

Transparency print quality is poor

Step Actions and questions
1 Transparencies—Check the media type and
transparency in use.
Are the recommended transparencies and media type
used?
2 Is the quality of the transparency poor or do brown
colors appear when projected?
3 Fuser settings—From the Diagnostics menu select
fuser settings and set to high.
Does this fuser setting fix the problem?
4 Does the transparency have a splotchy appearance?
5
Transfer setting: High—From the Diagnostics menu set
Transfer setting to High.
Does this transfer setting fix the problem?
6 Transfer setting: Low—From the Diagnostics menu set
Transfer setting to Low.
Does this transfer setting fix the problem?
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Service Manual
Yes No
Alignment— Reinstall the ITU.
Enter the If the problem
Diagnostics continues,
Menu. Perform replace the ITU
the alignment for assembly. See
the color "ITU assembly
required. See removal" on
"ALIGNMENT page
MENU" on
page 3-11.
Yes No
Go to step 2 Inform the
customer.
Go to step 3 Go to step 4
Problem resolved Replace the fuser
assembly. See
"Fuser
assembly
removal" on
page
Go to step 5 Replace the
second transfer
roll. See
"Second
transfer roll
removal" on
page
Problem resolved Go to step 6
Problem resolved Replace the
second transfer
roll. See
"Second
transfer roll
removal" on
page
4-49.
4-44.
4-89.
4-89.