Q1860-90918 Chapter 7 Troubleshooting 221
Table 50. Smudged lines (either direction)
Possible cause Action
Paper path contamination or
damage.
1. Check the toner cartridge by performing the half self-test functional check
(see page 224). Replace it if necessary.
2. Run a cleaning page through the printer (see page 67). Check the fuser
and replace it if necessary.
3. Check the Tray 1 feed roller and other trays’ separation pads and rollers
for contamination. Clean or replace as necessary.
4. Check for other sources of contamination in the paper path and clean with
a dry, lint-free cloth.
Also see the “Repetitive defect ruler” on page 223.
Table 51. Toner specks (see also “Dots” on page 216)
Possible cause Action
Dirt in printer. 1. Print a few more pages to see if the problem corrects itself.
2. Clean the inside of the printer (see page 66) or use the printer’s cleaning
page (see page 67).
Bad toner cartridge
components.
Perform the half self-test functional check (see page 224). If the problem
develops on the print drum, replace the toner cartridge.
Media does not meet printer
specifications or is stored
improperly.
1. Turn over the stack of paper in the tray. Also try rotating the paper 180°.
2. Check the paper (or other print media) type and quality. Replace the
paper, and advise the customer to use the recommended media and to store
it correctly.
Alternating small and
standard paper (such as
envelopes and letterhead).
To alternate small and standard paper, set
SMALL PAPER SPEED=SLOW
from the configuration menu on the control panel.
Worn fuser rollers. Replace the fuser.
Table 52. White lines (in the paper-path direction)
Possible cause Action
Lack of toner or faulty toner
cartridge.
Redistribute the toner in the toner cartridge. If the problem continues,
replace the toner cartridge.
Dirt in the laser path. Clean the laser path. Remove the laser/scanner assembly and check for dirt
or other obstructions in the beam path.
Defective fuser. Replace the fuser.
Dirty mirror in the
laser/scanner.
Replace the laser/scanner.
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