Vertical Dark Streaks With Print Missing Check - Lexmark MS312 Service Manual

Actions
Step 3
Remove, and then reinstall the toner cartridge and imaging unit.
Does the problem remain?
Step 4
If a bright light enters the right side of the printer, then move the
printer to avoid the bright light.
Note: In cases where the printer cannot be moved or relocated,
add a cover to the fan inlet vent to block the light from entering
the printer, or contact the next level of support.
Does the problem remain?
Step 5
If a separator plastic (A) is stuck inside the imaging unit or if there
are other obstructions between the charge roller and
photoconductor drum, then remove them.
Does the problem remain?

Vertical dark streaks with print missing check

Diagnostics and troubleshooting
64
Yes No
Go to step 4. The problem is
solved.
Go to step 5. The problem is
solved.
Contact the next The problem is
level of support. solved.
4514-330