Color Banding (At Right Angles To Feeding Direction) - Toshiba e-STUDIO 2555C Service Manual
Multifunctional digital color systems
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- Troubleshooting manual (136 pages) ,
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- Safety information manual (32 pages)
8.5.16
Color banding (at right angles to feeding direction)
Cause/Section
Step
Main charger
1
Fuser unit
2
High-voltage
3
transformer
(main charger
needle
4
electrode/grid
and transfer
roller bias)
Drum
5
6
7
2nd transfer
8
roller
Scanner
9
Main charger
10
Main charger
11
e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
Fig.8-20
Check item
Is the needle electrode dirty or
deformed?
Is the fuser belt or pressure roller
dirty?
Is the high-voltage transformer
output defective?
Is each joint of high-voltage output
loosened? (Check if any electric
leakage is causing noise.)
Is there deep scratch on the drum
surface?
Are there fine scratches on the drum
surface (drum pitting)?
Is the drum grounded?
Is the 2nd transfer roller rotating
normally?
Is there foreign matter on the
carriage rail?
Is the charger grid dirty or deformed? Clean or replace the charger grid.
Is there foreign matter on the
charger grid?
8 - 304
Measures
Clean or replace the needle
electrode.
Clean them.
Check the circuit and replace the
high-voltage transformer if not
working.
Reconnect each joint.
Replace the drum, especially if the
scratch has reached the aluminum
base.
Check and correct the contact of
cleaning blade and recovery blade.
Check the contact of the grounding
plate.
Clean the roller area or replace the
roller.
Remove foreign matter.
Remove foreign matter.
Clean or replace the charger grid.
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