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5.4. Print Quality Problems
5-4
Dropouts, horizontal streaks, stray dots
Clean the charger wire.
Open the printer side cover. Pull the green main charger wire cleaning knob slowly in and out a few times.
See Section 4.2.
Note the spacing of the defects.
If the defects occur at regular intervals of 60.6 mm (2.4 inches), the problem may be a dirty transfer roller.
Call for the assistance of a service person.
If the defects occur at regular intervals of 94 mm (3.7 inches), the problem may be a damaged drum unit or
fuser roller. Call for the assistance of a service person.
Black or white vertical streaks
Check the control panel.
If theý7RQHU ORZ 7.ðëí &OHDQ SULQWHU message is displayed and the indicator is flashing,
install a new toner kit. See Section 4.1.
Clean the charger wire.
Open the printer side cover. Pull the green main charger wire cleaning knob slowly in and out a few times.
See Section 4.2.
Call for the assistance of a service person.
If the above checks do not solve the problem, call for the assistance of a service person.