Specifications

1.5 VERTICAL BLACK LINES
- Phenomenon -
Thin black lines appear on the copy.
- Possible Causes -
1. Scratched cleaning blade
2. Dirty or scratched exposure glass and/or 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 scratched?
No Yes
Replace the toner shield glass.
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 toner is built-up on the drum.
• If toner is built-up on the drum, clean the drum with damp cloth.
• If the drum is scratched, replace the drum.
NOTE: When replacing the drum, perform drum initial setting using SP
mode #66.
1 December 1990
6-9