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SuperScript 4400 — Maintenance Guide
9.
Black Line -
Fine black line appears in the printed image.
Main Causes
1.
Wire grid of the charger unit is smeared.
2.
photoconductor belt's surface is damaged.
3.
Foreign particles (paper dust, etc.) are stuck in between the cleaning blade and photoconductor belt.
4.
Debris adhering to the base of toner module's developer roller contacts to photoconductor belt.
Countermeasures
1.
Remove the belt module.
a. Clean the charger unit. (See Chapter 7)
b. Replace the photoconductor belt module. (See Chapter 6)
2.
Clean the surface of developer roller.
OPC Belt Cartridge
K
Y
M
C
Developer Roller
Foreign
Particles
Charge
Toner Module
K(Black)
Y(Yellow)
M(Magenta)
C(Cyan)
OPC Belt Cartridge
Cleaning Belt
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: ......