Print Quality-Narrow Vertical Line; Print Quality-Random Marks - Olivetti d-Color MF920 Service Manual

Print quality—narrow vertical line
Step Questions / actions
1 Replace the photoconductor unit. See
"Imaging unit (IU) removal" on page
Print quality—random marks
Service tip: The primary cause of random marks is due to loose material moving around inside the printer and
attaching to the photoconductor unit, developer roll, or transfer belt.
Step Questions / actions
1 Is there any loose or foreign material on the
imaging unit?
2 Is there any loose or foreign material on the
developer roll?
3 Is there any loose or foreign material on the
transfer belt?
2-54
Service Manual
Yes
Problem solved.
4-40.
Yes
Inspect the imaging unit by
looking at the individual
developers and
photoconductors. Clean or
replace the faulty unit. See
"Imaging unit (IU)
removal" on page
Replace the developer unit.
Replace the image transfer
unit. See "Image transfer
unit (ITU)" on page
ABCDE
ABCDE
ABCDE
Replace the developer unit.
See "Developer unit
removal" on page 4-42
Go to step 2.
4-40.
Go to step 3.
Contact your next level of
support.
4-35.
No
No
Y112730-2