Toshiba DP4500 Service Handbook page 209

(20) Poor cleaning
Defective area
Developer material
Cleaning roller
Fuser roller
Cleaning blade
Toner recovery auger
DP4500/3500 TROUBLESHOOTING
Step Check Items
1 Has the specified developer material been
used?
2 Is the cleaning roller damaged or has it
reached its PM life?
3 Are there bubble-like scratches on the
fuser roller (125mm pitch on the copied
image)?
4 Has the fuser roller reached its PM life?
5 Is the pressurization of the fuser roller
normal?
6 Is the temperature of the fuser roller
normal?
7 Is the blade in proper contact with the
drum?
8 Has the cleaning blade been turned up?
9 Is the toner recovered normally?
Use the specified developer material and toner.
Replace the roller.
Replace the fuser roller. Check and adjust the tem-
perature control circuit.
Replace it.
Check and adjust the pressurization mechanism.
Check the adjustment values of fuser roller
temperature?
08-410:12 (200
08-411:12 (200
Check the blade.
Replace the blade.
Check and replace drum if necessary.
Clean the toner recovery auger.
Check the pressure of the cleaning blade.
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Prescription
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December 2000 © TOSHIBA TEC