White Spots - Toshiba FC-22 Manual

(16) White spots

Cause/Defect area
Developer unit/
Toner cartridge
Doctor-sleeve gap
Main charger
High-voltage transformer
(main charger/ developer
bias/transfer roller)
Developer material
FC-22 TROUBLESHOOTING
Step Check items
1 Toner density of developer material proper?
2 Doctor-sleeve gap proper?
3 Foreign matter on charger?
4 Charger wire dirty or deformed?
5 High-voltage transformer output defective?
6 Accumulated copy volume for replacement
attained?
Check and correct auto-toner sensor and toner sup-
ply operation.
Check whether amount of toner is sufficient in toner
cartridge.
Adjust gap.
Remove it.
Clean or replace charger wire.
Adjust output.
Replace developer material.
4 - 72
Measures
January 2000 © TOSHIBA TEC