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SuperScript 4400 — Maintenance Guide
13. White Band -
White banding line appears in the horizontal direction, and consequently causes a missing
image.
Main Causes
1.
Installation failure of the transfer unit, and deformation of the transfer roller.
2.
Contact failure of the transfer roller's bias pole.
3.
Transfer Roller Cam Clutch failure.
Countermeasures
1.
Confirm that the transfer unit is properly locked into place; BOTH sides of the transfer unit are
secured by a hook.
2.
Confirm if the transfer unit is properly installed or not.
3.
Replace the transfer roller cam clutch with a new clutch. (See Chapter 7)
4.
Replace the transfer unit with a new unit. (See Chapter 7)
Fusing Unit
Transfer Unit
Paper Discharger
Unit
Transfer Roller
Transfer Drum
Paper Feeding
Roller
Drum Cleaner
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: ......