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6 - 19 TROUBLESHOOTING
Black lines down the page
Printed pages have toner stains
stripes down the page.
■ You may clear the problem by cleaning the primary corona wire inside the
drum unit by sliding the blue tab. Make sure to return the blue tab to the
Home position (▼). See Cleaning the corona wire on page 5-17.
■ The toner cartridge may be damaged. Put in a new toner cartridge. See
Replacing the toner cartridge on page 5-3.
■ The drum unit may be damaged. Put in a new drum unit. See Replacing
the drum unit on page 5-8.
■ The fuser unit may be smudged. Call Customer Service.
Black spots
Black spots at 108 mm (4.25 in.)
intervals.
■ You may clear the problem by printing a black page.
All black
■ You may clear the problem by cleaning the primary corona wire inside the
drum unit by sliding the blue tab. Make sure you return the blue tab to the
Home position (▼). See Cleaning the corona wire on page 5-17.
■ The drum unit may be damaged. Put in a new drum unit. See Replacing
the drum unit on page 5-8.
■ The fuser unit may be smudged. Call Customer Service.
Lines across the page
■ Clean the inside of the printer and the primary corona wire in the drum unit.
See Cleaning on page 5-14.
■ The drum unit may be damaged. Put in a new drum unit. See Replacing
the drum unit on page 5-8.
White lines down the page
■ You may clear the problem by wiping the scanner window with a soft cloth.
See Cleaning the inside of the printer on page 5-15 or the Maintenance
Tutorial video on the supplied CD-ROM.
■ The toner cartridge may be damaged. Put in a new toner cartridge. See
Replacing the toner cartridge on page 5-3.
Examples of poor print quality Recommendation
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234