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

26.5.11 White banding (in feeding direction)

Cause/Section Step
Laser optical unit 1 Is there foreign matter or dust on the slit
glass?
Main charger 2 Is there foreign matter on the charger
grid grid?
Developer unit 3 Is there foreign matter inside the doctor
blade?
4 Is there foreign matter on the drum seal?
5 Do any paper fibers or dirt adhere to the
developer unit and contact with the drum?
Drum 6 Is there scratch or foreign matter on the
drum surface?
Transfer unit 7 Is there scratch or foreign matter on the
transfer belt surface?
8 Are the harness or foreign matters in
contact with the transfer belt surface?
9 Is there any scratch or hole on the 1st/2nd
transfer roller?
Transfer unit 10 Is there any foreign matter on the 2nd
transfer facing roller?
Transport path 11 Does the toner image touch foreign
matter after transfer, before entering the
fuser unit?
Discharge lamp 12 Has any LED of discharge lamp gone
out?
Scanner 13 Is there foreign matter or dust in the
optical path?
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Fig. 26-10
Check items
26 - 137
Measures
Clean the slit glass.
Remove foreign matter.
Remove foreign matter.
Remove foreign matter.
Remove the paper fibers or dirt.
Replace the drum.
Replace the transfer belt.
Correct or remove them.
Replace the 1st/2nd transfer roller.
Remove foreign matter or clean the roller.
Remove foreign matter.
Replace the discharge lamp.
Clean the lens and mirrors.
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
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