Xerox 4520mp manual Vertical dark streaks, Horizontal dark streaks, Contaminated paper path

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		Possible Causes		Corrective Actions
Vertical dark streaks	1.	Defective EP cartridge	1.	Replace EP cartridge.
Black lines running across	2.	Contaminated paper path	2.	Clean paper path to remove any toner
the print in the direction				accumulations.
of paper movement.	3.	Contaminated Fuser Rolls or	3.	Replace Fuser Wiper (see Chapter 6). If
		Wiper		problem is not resolved, contact your
				dealer or Xerox / Rank Xerox.

Horizontal dark streaks	1.	Defective EP cartridge	1.	Replace EP cartridge.
Black lines running across	2.	Contaminated paper path	2.	Clean paper path to remove any toner
				accumulations.
the page perpendicular
to the direction of paper	3.	Contaminated Fuser Rolls or	3.	Replace Fuser Wiper (see Chapter 6). If
movement.		Wiper		problem is not resolved, contact your
				dealer or Xerox / Rank Xerox.

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