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e-STUDIO3511/4511 TROUBLESHOOTING 5 - 132 November 2003 © TOSHIBA TEC
Cause/Section
Developer material
Cleaner
Transfer belt cleaner
Toner recovery auger
Fuser unit
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Check items
Is the specified developer material
used?
Is there paper dust on the drum cleaning
blade edge?
Is the drum cleaning blade peeled?
Is the cleaning brush rotating normally?
Is the cleaning brush damaged? Is there
foreign matter on the brush?
Is there paper dust on the edge of
transfer belt cleaning blade?
Is the transfer belt cleaning blade
peeled?
Is the transfer belt cleaning blade
contacted and released properly?
Is the transfer belt cleaning blade in
proper contact with the transfer belt?
Is the toner recovery defective?
Is the cleaning roller or the oil roller
damaged? Have the roller reached their
PM life?
Is there any bubble-like defect on the
fuser belt (173 mm pitch on the image)?
Have the fuser belt and pressure roller
reached their PM life?
Is the pressure between the fuser belt
and pressure roller proper?
Is the temperature of fuser roller proper?
Measures
Use the specified developer material
and toner.
Clean it.
Replace the blade.
Check and replace the drum.
Check the brush driving section. Clean
the brush area.
Replace the brush and clean the brush
area. Check the drum and replace if
there is any abnormality.
Clean or replace it.
Replace the blade.
Check if the spring of the transfer belt
cleaner clutch is removed or if any
connector is disconnected. Otherwise
replace the clutch.
Check if the blade pressure spring is
installed.
Clean the toner recovery auger.
Check the cleaning blade pressure.
Replace them.
Replace the fuser belt. Check and
modify the heater control circuit.
Replace them.
Check and adjust the pressure mecha-
nism.
Check/correct the setting value of fuser
roller temperature.
Clean or replace the thermistors.
Check and correct the circuit.