ActionRemarks
* Due to adhering launa
oil, the 1st and 2nd
mirrors may beVertical Black Line
contaminated.
* Due to deterioration of
the exposure lamp, a
black line may appear
1on the copy.Development
Unit
If the filament is
Check the Dev. Unit Installationstretched, see below.
Lens, mirrors
2and cleaning
blade
2-1. Check the toner shield glass
2-2. Clean the surface of the mirrors
2-3. Check the cleaning blade
2-4. Check the image density
3Drum or hot
roller
3-1. Check for scratches on the drum
3-1. Check for scratches on the hot
roller
3-3. Stained exposure glass
3-4. Glue left on the drumTraces of the pick-off
pawls are 80 mm apart.
Check for
4toner pile-up on
dev. unit.
4-1. Check for toner pile-up in the dev.
unit
4-2. Check and adjust the exposure
adjusting plate if it is already
adjusted
4-3. Check the exposure lamp
- Discoloration
- Deformation of the lamp filament
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