105
UF-7300/7200
UF-8300/8200
4.3.5. Vertical Dark Lines
Carefully wipe the Corona Wire in the Toner Cartri]ge by sliding a dry Cotton Swab
from end to end a few times.
Paper Travel
P
START
No
Yes
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
No
Yes
Are there any foreign particles
or stains on the BTR?
Yes
No
2. Replace the Toner Cartridge.
1. Clean the BTR with a soft, dry
cloth.
2. Replace the BTR.
Is the Laser Unit (LSU)
normal?
No
Yes
Replace the Laser Unit (LSU).
END
No
Yes
Clean, or replace the rollers.
Are the Fuser, and Pressure
Roller surfaces clean?
Is the printout in Service
Mode 3 normal?
1. Clean the Corona Wire as
illustrated below.
Corona Wire
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