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February 2002 © TOSHIBA TEC 4 - 81 FC-210/310 TROUBLESHOOTING
Cause/Section
Step
Check items Measures
Main charger
Fuser unit
High-voltage transformer
(main charger/
transfer roller)
Drum
Scattered toner recove-
ry roller of developer
unit
Scanner carriage section
1 Is the charger wire dirty or deformed?
2 Is the fuser belt, lower heat roller or
oil roller dirty?
3 Is the high-voltage transformer output
defective?
4 Is there deep scratch on the drum
surface?
5 Are there fine scratches on the drum
surface (drum pitting)?
6 Is electrical continuity secured
between the developer bias supply
spring and the recovery roller?
7 Is there foreign matter on the carriage
rail?
Clean or replace the charger wire.
Clean them.
Check the circuit and replace the high-voltage
transformer if not working.
Replace the drum, especially if the scratch
has reached the aluminum base.
Check and correct the contact of cleaning
blade and recovery blade.
If not, replace the developer bias supply
spring.
Remove foreign matter.
(15) Color banding (at right angles to feeding direction)
Feeding direction