3.6 VERTICAL BLACK LINES
- Problem -
Thin black lines appear on the copy.
- Possible Causes -
1. Scratched cleaning blade
2. Dirty or scratched mirrors
3. Scratched or dirty drum
4. Scratched hot roller
- Action -
Do the black lines shift when a reduction copy is made?
No Yes
Clean or replace the exposure glass or mirrors.
Is the toner shield glass or green filter scratched?
No Yes
Replace the toner shield glass or green filter.
Is the edge of the cleaning blade scratched?
No Yes
Replace the cleaning blade.
Is the hot roller scratched?
No Yes
Check whether black lines appear on the copy by stopping the
copy paper in the transport section. If no black lines appear,
replace the hot roller.
Check whether the drum is scratched or there is built-up toner on the drum.
• If toner is built up on the drum, clean the drum as follows;
NOTE: Never use alcohol to clean the drum, alcohol dissolves the drum
surface.
• If the drum is scratched, replace the drum.
Wipe with a dry cloth
Wipe with a cloth wet
with water
Wipe again with a dry cloth
(until no water remains)
FSM 6-11 FT5535/4527/4522
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