HP 5100LE manual Repetitive defects, Skew Possible cause Action

Table 48. Repetitive defects

Possible cause	Action
Toner cartridge is damaged.	Inspect the drum for scratches or damage. Replace the toner cartridge for
The circumference of the	defects that repeat at 44 mm (1-3/4 inches) or 94 mm (3-11/16 inches).
photoconductive drum	Defects that repeat at 50 mm (1-15/16 inches) indicate a possible problem
inside the toner cartridge is	with either the toner cartridge or the registration assembly rollers.
94 mm (3-11/16 inches). If
the defect repeats at this
interval, the defect is
associated with the drum.
Dirty rollers. Any dirty roller	Examine and clean (or replace) the rollers in the paper path.
in the paper path can result
in a repetitive print defect.
Fuser is dirty or defective.	Clean the fuser by running a cleaning page through the printer (see page
The circumferences of the	67). Several pages might be required if the fuser is very dirty. If the problem
rollers used in the fuser are	persists, replace the fuser.
75 mm (1-15/16 inches) and
79 mm (3-1/8 inches). If the
defect repeats at these
intervals, the defect is
associated with fuser.
Gears are worn, causing	Inspect the gears that drive the toner cartridge and the fuser. Replace the
slippage or jumping.	main gear assembly if necessary.
Media does not meet	Try a different paper.
specifications. The surface
of the paper might be too
coarse, which can cause
repeating marks.
	Also see “Repetitive defect ruler” on page 223.

Table 49. Skew

Possible cause	Action
Media does not meet printer	1.	Print a few more pages to see if the problem corrects itself.
specifications or is stored	2.	Turn over the stack of paper in the tray. Also try rotating the paper 180°.
improperly.	3.	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.
Media is not loaded	Make sure that media is loaded correctly and that the guides fit correctly
correctly or trays are not	against the stack.
adjusted correctly.
Registration assembly is	Make sure that the registration assembly is installed correctly. Replace it if
incorrectly installed or	necessary.
damaged.

220 Troubleshooting Q1860-90918

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