Toshiba e-STUDIO520 Service Handbook page 493

4) Toner offset
Toner offset (Shadow image appears approx. 188 mm toward the dark image.)
Defective area
Density
Fuser unit
Fuser unit
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Fig. 5-4
Step Check items
1 Is the density too high?
2 Is the pressure of the fuser roller nor-
mal?
3 Is the thermistor in contact with the
fuser roller?
4 Is there a scratch on the fuser roller
surface?
5 Has the fuser roller reached its PM
life?
6 Is the setting temperature of the fuser
roller normal?
7 Using the specified fuser roller and
the pressure roller?
8 Is the pressurization of cleaning web
normal?
9 Is the cleaning web transported nor-
mally?
10 Has the cleaning web reached its PM
life?
11 Using the specified cleaning web?
12 Is there any trouble with the ther-
mistor?
5 - 131
Prescription
Adjust the density.
Check the pressure releasing parts
and pressurization mechanism.
Contact the thermistor with the fuser
roller.
Replace the fuser roller.
Replace the fuser roller.
Check the adjustment values of fuser
roller temperature?
08-410, 411
Use the specified fuser roller and the
pressure roller.
Check the installation state of clean-
ing web mechanism.
Check the drive system of the clean-
ing web. Check and correct setting
(08-403, 1252-6 1252-7)
Replace the cleaning web.
Use the specified cleaning web.
Clean or replace the thermistor.
e-STUDIO520/523/600/603/720/723/850/853
TROUBLESHOOTING
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