Lexmark C 540n, Руководство по обслуживанию

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2-44
Service Manual
5025-2xx, 4xx
Print quality—horizontal banding
Print the Print Defect Page:
1.
At the Ready prompt, press Menu ( ).
2.
Select Reports , and press Select ( ).
3.
Select Print Defects, and press Select ( ).
Print quality—horizontal line
Either the photoconductor unit or one of the developer units that make up the imaging unit is defective. Remove
and inspect the imaging unit. Replace the damaged part of the imaging unit. See
“Imaging unit (IU) removal”
on page 4-45 .
Step Questions / actions Yes No
1 Measure the distance between repeating
bands.
Is the distance between bands either 34.6 or
94.2 mm?
Replace the photoconductor
unit. Remove the imaging
unit and remove the original
developer units, and then
put them back into the new
photoconductor unit, and
reinstall the imaging unit.
See
“Imaging unit (IU)
removal” on page 4-45 .
Go to step 2.
2 Does the distance measure 95 mm or
108 mm? Replace the fuser. See
“Fuser assembly
removal” on page 4-29
.
Go to step 3.
3 Does the distance measure 37.7, 55, or
78.5 mm? Replace the ITU. See
“Image transfer unit (ITU)
removal” on page 4-40
.
Go to step 4.
4
Does the distance measure 43.9 mm or 45.5? Replace the developers that
match the missing color
(black, cyan, magenta, or
yellow). See
“Developer
unit removal” on
page 4-21
.
Check the various rollers in
the printer for debris.