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Lexmark C760 - Poor Color Alignment; Transparency Print Quality Is Poor

Lexmark C760
466 pages
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2-136 Service Manual
5060-4xx
Poor color alignment
Transparency print quality is poor
Step Action and questions Yes No
1 Print cartridge - Make sure that the print cartridges are
properly inserted and are seated properly in their
respective V blocks.
Are the cartridges seated correctly?
Go to step 2 Install the
cartridge(s)
correctly
2
Front cover and cartridge contact block - Check the
front cover and the cartridge contact block to make
sure that all the springs and cartridge hold downs are
present and correctly installed.
Are all springs and cartridge hold downs present and
correctly installed?
Go to step 3 Replace any
missing or
damaged springs
or hold downs
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?
Alignment - Enter
the Diagnostics
Menu. Perform
the alignment for
the color
required. See
“ALIGNMENT
MENU” on
page 3-15.
Reinstall the ITU.
If the problem
continues,
replace the “ITU
assembly” on
page 4-44
Step Action and questions Yes No
1 Transparencies - Check the media type and
transparency in use.
Are the recommended transparencies and media type
used?
Go to step 2 Inform the
customer
2
Is the quality of the transparency poor or do brown
colors appear when projected?
Go to step 3 Go to step 4
3
Fuser settings - From the Diagnostics Menu select
fuser settings and set to high.
Does this fuser setting fix the problem?
Problem solved Replace the
“Fuser
assembly” on
page 4-35
4
Does the transparency have a splotchy appearance? Go to step 5 Replace the
“Second
transfer roll” on
page 4-71
5
Transfer setting: High - From the Diagnostics Menu set
Transfer setting to High.
Does this transfer setting fix the problem?
Problem solved Go to step 6
6
Transfer setting: Low - From the Diagnostics Menu set
Transfer setting to Low.
Does this transfer setting fix the problem?
Problem solved Replace the
“Second
transfer roll” on
page 4-71

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