e-STUDIO520/600/720/850 TROUBLESHOOTING March 2005 © TOSHIBA TEC
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4) Toner offset
Fig.5-4
Toner offset (Shadow image appears approx. 188 mm toward the dark image.)
Defective area Step Check items Prescription
Density 1 Is the density too high? Adjust the density.
Fuser unit 2 Is the pressure of the fuser roller nor-
mal?
Check the pressure releasing parts
and pressurization mechanism.
3 Is the thermistor in contact with the
fuser roller?
Contact the thermistor with the fuser
roller.
4 Is there a scratch on the fuser roller
surface?
Replace the fuser roller.
5 Has the fuser roller reached its PM
life?
Replace the fuser roller.
6 Is the setting temperature of the fuser
roller normal?
Check the adjustment values of fuser
roller temperature?
08-410, 411
Fuser unit 7 Using the specified fuser roller and
the pressure roller?
Use the specified fuser roller and the
pressure roller.
8 Is the pressurization of cleaning web
normal?
Check the installation state of clean-
ing web mechanism.
9 Is the cleaning web transported nor-
mally?
Check the drive system of the clean-
ing web. Check and correct setting
(08-403, 1252-6 1252-7)
10 Has the cleaning web reached its PM
life?
Replace the cleaning web.
11 Using the specified cleaning web? Use the specified cleaning web.
12 Is there any trouble with the ther-
mistor?
Clean or replace the thermistor.
Feeding direction
Approx.188mm
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