Imaging Artifacts
221
TROUBLESHOO
TING
8.
Vertical White Band -
White band appears in the vertical direction of printed image.
Main Causes
1.
Silicon oil on the transfer drum.
Countermeasures
1.
Wipe off the oil adhering to the transfer unit and surrounding area.
2.
Replace the transfer drum with a new drum. (See Chapter 7)
3.
If the oil adhesion is excessive, replace the belt module and cleaning brush with a new cartridge and
brush. (See Chapter 6)
Transfer Unit
Transfer Unit
Paper Dischager Unit
Transfer Roller
Transfer Drum
Paper Feeding Roller
Drum Cleaner
Transfer Drum
Adhered Silicone oil
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: ......