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November 2003 © TOSHIBA TEC 5 - 123 e-STUDIO3511/4511 TROUBLESHOOTING
Cause/Section
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Main charger
Cleaner
Transfer unit
Fuser unit
Drum
Laser optical unit
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Check items
Is there foreign matter in the optical
path?
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 charger wire dirty or deformed?
Is there foreign matter inside the
charger case?
Is the inner surface of charger case
dirty?
Are the pads of charger wire cleaner
stopping at the position other than their
home position?
Is there paper dust on the cleaning
blade edge?
Is the cleaning blade contact improper?
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
contacted and released properly?
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?
Measures
Clean the slit, lens and mirrors.
Clean it.
Remove foreign matter.
Clean or replace the charger grid.
Remove foreign matter.
Clean or replace the charger wire.
Remove foreign matter.
Clean inside.
Correct the position.
Clean or replace the paper dust removal
brush for the registration roller.
Clean or replace the cleaning blade.
Correct it.
Clean the toner recovery auger section.
Correct or remove them.
Clean or replace it.
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.
a.Clean or replace them.
b.Clean the thermistor.
Replace the drum.
Remove foreign matter or dust.