128 Troubleshooting EN
Horizontal stripes
Sometimes horizontally aligned black streaks or smears can appear.
l The toner cartridge may not be installed properly. Remove the cartridge
and reinsert it.
l The toner cartridge may be defective. Replace it.
l If the printer still has print quality problems, the printer may require
cleaning.
l Replace the heating element.
Repetitive defects
Sometimes light character shadows or repetitive marks appear on the page.
l Refer to the “Repetitive Image Defect Ruler” later in this chapter.
l The printer may need cleaning. See “Cleaning Your Printer,” in Chapter
4.
l The toner cartridge may be damaged, causing a repetitive black flaw on
every printout. Replace the toner cartridge.
l If using transparencies, use a different type of overhead transparency.
l Your paper texture may be too coarse. Try changing to a paper with a
smoother finish.
l The photosensitive drum of the toner cartridge may have been over-
exposed to bright light, causing repetitive defects (usually a blurred
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.
l 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.
Character voids
Character voids are white areas within the parts of characters that should be
solid black.
l If you are using transparencies when you experience this problem, try
another type of transparency. Hewlett-Packard transparencies are
designed to minimize character voids. (Because of the composition of
transparency media, some character voids are normal.)
l You may be printing on the wrong side of the paper. Remove the paper
and turn it over. (The label on many reams of paper has an arrow
indicating the print side.)
l Your paper may not meet the requirements for the printer.
Service.book Page 128 Thursday, September 14, 2000 11:15 AM
