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Vertical Lines
Sometimes vertically aligned black streaks or smears can appear on successive
pages.
•The toner cartridge may be damaged. Replace it.
•The printer may need cleaning. See “Cleaning Your Printer,” in Chapter 4.
•Replace the heating element.
Horizontal Stripes
Sometimes horizontally aligned black streaks or smears can appear.
•The toner cartridge may not be installed properly. Remove the cartridge and
reinsert it.
•The toner cartridge may be defective. Replace it.
•If the printer still has print quality problems, the printer may require cleaning.
•Replace the heating element.
Repetitive Defects
Sometimes light character shadows or repetitive marks appear on the page.
•Refer to the “Repetitive Image Defect Ruler” later in this chapter.
•The printer may need cleaning. See “Cleaning Your Printer,” in Chapter 4.
•The toner cartridge may be damaged, causing a repetitive black flaw on every
printout. Replace the toner cartridge.
•If using transparencies, use a different type of overhead transparency.
•Your paper texture may be too coarse. Try changing to a paper with a smoother
finish.
•The photosensitive drum of the toner cartridge may have been over-exposed to
bright light, causing repetitive defects (usually a fuzzy black area). Replace the
toner cartridge.
Vertical White Stripes
The toner cartridge may be getting low on toner. Gently shake the cartridge to
redistribute the toner, or replace the cartridge.
•The printer may need cleaning. (See “Cleaning Your Printer,” in Chapter 4.) You
may also need to clean the mirror on the laser scanner by blowing air through the
scanner to remove any dust particles.
Troubleshooting 7-15