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e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
8 - 305
8.5.17
White spots
Fig.8-21
Cause/Section
Step
Check item
Measures
Developer
unit/Toner
cartridge
1
Is the toner density of developer
material proper?
Check and correct the auto-toner
sensor and toner supply operation.
Check if the amount of toner is
sufficient in the toner cartridge.
2
Is the doctor-sleeve gap proper?
Adjust the gap.
Developer
material/
Toner/Drum
3
Using the specified developer
material, toner and drum?
Use the specified developer
material, toner and drum.
4
Have the developer material and
drum reached their PM life?
Replace the developer material and
drum.
5
Is the storage environment of the
toner cartridge 35oC or less without
dew?
Use the toner cartridge stored in the
environment within specification.
6
Is there any dent on the surface of
the drum?
Replace the drum.
7
Is there any film forming on the
drum?
Clean or replace the drum.
8
Is the drum bedewed?
Wipe the drum surface with a piece
of dry cloth.
Transfer unit
9
Is there foreign matter on the
transfer belt surface?
Remove foreign matter.
10
Is there foreign matter on the
transfer belt 2nd transfer facing
roller?
Clean the transfer belt unit.
Main charger
11
Is there foreign matter on the
charger?
Remove it.
12
Is the needle electrode dirty or
deformed?
Clean or replace the needle
electrode.
Feeding direction
Summary of Contents for e-studio 2555c
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