Color Banding (In Feeding Direction) - Toshiba e-STUDIO2330C Service Manual

26.5.14 Color banding (in feeding direction)

Cause/Section Step
Scanner 1
2
Main charger 3
4
5
6
7
8
Drum cleaner 9
10
Transfer unit 11
12
13
Fuser unit 14
Drum 15
Laser optical unit 16
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
Fig. 26-13
Check items
Is there foreign matter in the optical path? Clean the slit, lens and mirrors.
Is there dust or stain on the shading
correction plate or ADF original glass?
Is there foreign matter on the charger
grid?
Is the charger grid dirty or deformed?
Is there foreign matter on the main
charger?
Is the needle electrode dirty or deformed? Clean or replace the needle electrode.
Is there foreign matter inside the charger
case?
Is the inner surface of charger case dirty?
Is there any foreign matter on the drum
cleaning blade edge?
Is toner recovery defective?
Are the harness or foreign matters in
contact with the transfer belt surface?
Is there paper dust on the edge of transfer
belt cleaning blade?
Is the transfer belt cleaning blade in
proper contact with the transfer belt?
a. Is there dirt or scratches on the fuser
belt and pressure roller surface?
b. Is the thermistor dirty?
Are there scratches on the drum surface?
Is there foreign matter or dust on the slit
glass?
26 - 140
Measures
Clean it.
Remove foreign matter.
Clean or replace the charger grid.
Remove foreign matter.
Remove foreign matter.
Clean inside.
Clean or replace the drum cleaning blade.
Clean the toner recovery auger section.
Correct or remove them.
Clean or replace the transfer belt cleaning
blade.
Take off the transfer belt and check if the
transfer belt cleaning blade pressure
spring and the pressure hook are installed
properly.
a. Clean or replace them.
b. Clean the thermistor.
Replace the drum.
Remove foreign matter or dust.
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