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e-STUDIO281c/351c/451c TROUBLESHOOTING June 2005 © TOSHIBA TEC
5 - 112
14)Color banding (in feeding direction)
Fig.5-14
Cause/Section Step Check items Measures
Scanner 1 Is there foreign matter in the optical path? Clean the slit, lens and mirrors.
2 Is there dust or stain on the shading cor-
rection plate or ADF original glass?
Clean it.
Main charger 3 Is there foreign matter on the charger
grid?
Remove foreign matter.
4 Is the charger grid dirty or deformed? Clean or replace the charger grid.
5 Is there foreign matter on the main
charger?
Remove foreign matter.
6 Is the charger wire dirty or deformed? Clean or replace the charger wire.
7 Is there foreign matter inside the charger
case?
Remove foreign matter.
8 Is the inner surface of charger case dirty? Clean inside.
9 Are the pads of charger wire cleaner stop-
ping at the position other than their home
position?
Correct the position.
Cleaner 10 Is there paper dust on the cleaning blade
edge?
Clean or replace the paper dust removal
brush for the registration roller.
Clean or replace the cleaning blade.
11 Is the cleaning blade contact improper? Correct it.
12 Is toner recovery defective? Clean the toner recovery auger section.
Transfer unit 13 Are the harness or foreign matters in con-
tact with the transfer belt surface?
Correct or remove them.
14 Is there paper dust on the edge of transfer
belt cleaning blade?
Clean or replace it.
15 Is the transfer belt cleaning blade con-
tacted and released properly?
Check if the spring of the transfer belt
cleaner clutch is removed or if any con-
nector is disconnected. Otherwise replace
the clutch.
16 Is the transfer belt cleaning blade in
proper contact with the transfer belt?
Check if the blade pressure spring is
installed.
Feeding direction