Xerox 4520 User Manual page 218

P r i n t Q u a l i t y P r o b l e m s
Figure 7.6 Print Quality Problems (continued)
Problem
Background/black
prints
Overall darkness or
localized dark bands in
the non-image areas.
Spot deletions
Areas of the print are
extremely light or
missing.
7-44 4 5 2 0 / 4 5 2 0 m p U s e r ' s G u i d e
Possible Causes
1. Defective EP cartridge
2. Print Density adjustment set
too high
3. Defective Laser, Controller,
Fuser Assembly
1. Damp paper stock
2. Defective EP cartridge
Corrective Actions
1. Replace EP cartridge.
2. Adjust Print Density (see Chapter 6).
3. Contact your dealer or Xerox / Rank
Xerox.
1. Replace paper stock.
2. Replace EP cartridge.