Imaging Artifacts
227
TROUBLESHOO
TING
14. Toner Drop -
Toner spot stain is caused on the print by the toner dropping within the printer engine.
Main Causes
1.
Toner drops on the transfer drum due to the break-down of the waste toner feeder's drum cleaner.
a. Mylar of the waste toner feeder is deformed.
b. Waste toner is not properly collected by the waste toner feeder.
2.
Toner adhering to the developer roller drops on the photoconductor belt.
Countermeasures
1.
Check up the cleaning brush and waste toner feeder.
a. Clean the perimeter of the cleaning brush installation location.
b. Check the seal for damage. If damaged, replace the waste toner feeder with a new feeder.
c. Check for waste toner in the printer. If so, vacuum the waste toner with a toner vacuum cleaner.
2.
Remove the toner module.
a. Clean the surface of developer roller.
b. Replace the toner module with a new module.
Cleaning Brush
Cleaning Roller
Waste Toner
Feeder
Transfer Drum
Developer Roller
Toner Drop
Toner Module
Summary of Contents for Super Script 4400
Page 1: ...NEC SuperScript 4400 4400N Maintenance Guide 18 September 1998 Part Number 703 A0240 001 ...
Page 3: ...i SuperScript 4400 Maintenance Guide ...
Page 61: ...52 SuperScript 4400 Maintenance Guide ...
Page 71: ...62 SuperScript 4400 Maintenance Guide ...
Page 125: ...116 SuperScript 4400 Maintenance Guide ...
Page 189: ...180 SuperScript 4400 Maintenance Guide Toner Sensor TPD Toner Sensor TTR Fram Ass y ...
Page 193: ...184 SuperScript 4400 Maintenance Guide Stay A Ass y Transfer Drum ...
Page 203: ...194 SuperScript 4400 Maintenance Guide Stay A Ass y ...
Page 267: ...258 SuperScript 4400 Maintenance Guide ...
Page 273: ...264 SuperScript 4400 Maintenance Guide ...
Page 287: ...XIV SuperScript 4400 Maintenance Guide F G H I J ...
Page 289: ...XVI SuperScript 4400 Maintenance Guide ...
Page 293: ...ii Superscript 4200N and 4400 Series Maintenance Guide Addendum ...
Page 295: ...iv Superscript 4200N and 4400 Series Maintenance Guide Addendum ...
Page 302: ...7 ...
Page 314: ...19 NOTES ...
Page 315: ...20 Superscript 4200N and 4400 Series Maintenance Guide Addendum ...
Page 316: ......