Toshiba e-STUDIO350 Service Handbook page 553

9) White banding (in the feeding direction)
Defective area Step
Laser optical unit 1
Main charger grid 2
Transfer charger 3
wire
Developer unit 4
5
6
Drum 7
Transport path 8
Discharge LED 9
Scanner 10
11
Cleaner 12
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Check items
Is there a foreign matter or stain on
the slit glass?
Is there a foreign matter or dew on
the charger grid?
Is there any foreign matter or stain
on the transfer charger wire?
Is the developer material trans-
ported properly?
Is there a foreign matter or dew on
the drum seal?
Is the upper drum seal of the devel-
oper unit in contact with the drum?
Is there a foreign matter on the drum
surface?
Does the toner image contact with
any foreign matter before the paper
enters the fusing section after the
separation?
Is any of the discharge LEDS off?
Is there a foreign matter on the light
path?
Are the original glass (especially the
position of shading correction plate)
mirror and lens dirty?
Is there any foreign matter, which
contacts the drum on the cleaner
stay?
5 - 117
05/11
Prescription
Remove the foreign matter or stain.
Remove the foreign matter.
Clean the transfer charger wire.
Remove the foreign matter if there is any.
Remove the foreign matter or dew.
Correct the position of the drum seal or
replace it.
Replace the drum.
Remove the foreign matter.
Replace the discharge LED.
Remove the foreign matter.
Clean them.
Remove the foreign matter.
e-STUDIO350/352/353/450/452/453
TROUBLESHOOTING
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