Vertical Banding Check; Light Print On Solids Check; Color Problems Check - Lexmark CS310 Service Manual

Actions
Step 1
Replace the photoconductor unit (part of the imaging unit). Remove the
imaging unit and remove the developers. Place the original developers in
the new photoconductor, and then replace the imaging unit. See
unit (IU) removal" on page
Does this solve the problem?
Step 2
A faulty printhead can cause the problem. To test the printhead for solid
colors, place a narrow strip of paper over the gap between the developers.
Make sure the paper stays in place when you replace the imaging unit.
This will block the laser from discharging the photoconductors. Select the
Print Quality Page.
Does the uniform color page have a white vertical band?
Step 3
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 HVPS spring
that runs through the left printer frame. See
removal" on page 248 to view the proper mounting and for removal
procedures.
Are the springs defective?
Step 4
Turn the printer off, and check the continuity of the HVPS cable.
Is there continuity?
Step 5
Replace the HVPS. See "High‑voltage power supply (HVPS) removal" on
page 239.
Does this solve the problem?

Vertical banding check

Replace the developer cartridge.

Light print on solids check

Light print can be caused by incorrect media. For more information, see

Color problems check

For more information on non‑mechanical color issues, see
246.
"Toner cartridge contacts
Diagnostic information
Yes
Problem is solved.
"Imaging
Replace the printhead.
See "Printhead
removal" on page
299.
Replace the transfer
contact assembly. See
"Toner cartridge
contacts removal" on
page 248.
Go to step 5.
Problem is solved.
"Media guidelines" on page
"Color theory" on page
44
No
Go to step 2.
Go to step 3.
Go to step 4.
Replace the cable
assembly.
Replace the controller
board. See "Controller
board removal" on
page 291.
23.
350.
5027