Lexmark C734 Service Manual page 168

5026
Print quality—residual image
Service tip: Install a new print cartridge if available before doing this service check. Residual image can be
caused by the photoconductor, cleaning blade, and other parts inside the print cartridge.
Step Questions / actions
1 Is there any toner contamination on the fuser
assembly?
Print quality—solid color page
Service tip: A solid color page is generally caused by a problem in the high voltage system or an incorrect high
voltage in the printing process resulting in toner development on the entire photoconductor drum.
Step Questions / actions
1 Replace the photoconductor unit for the color
in question.
Does this fix the problem?
2 Check the high voltage contact from the
HVPS to the photoconductor charge roll.
Ensure the contact springs are properly
mounted and that the charge roll contact
spring is making good contact with the HPVS
spring that runs through the left printer frame
to view the proper mounting and for removal
procedures.
High volt power supply
High volt contact path
Note: Printer is shown with
components removed for
clarity
Are the spring(s) defective?
2-134
Service Manual
Yes
Replace the fuser. See
"Fuser removal" on
page 4-90.
Yes
Problem solved.
Replace the transfer
contact assembly.
No
Contact your next level of
support.
No
Go to step 2.
Go to step 3.