HP LaserJet 5000n Action, Action, Possible Cause, Possible Cause, Table 7-30.Vertical Dots, Table 7-31.Vertical White Lines

Table 7-30. Vertical Dots

Possible Cause	Action
Dirty static eliminator	Clean the static eliminator.
teeth.
Poor contact between	Clean the contacts, if dirty. If the problem remains
the Static Eliminator	after cleaning, or if parts are damaged or deformed,
and the Engine	replace them.
Controller Board.
Deformed or	Replace the Transfer Roller.
deteriorated Transfer
Roller.
Defective DC	Replace the DC Controller Assembly.
Controller Assembly.

Table 7-31. Vertical White Lines

Possible Cause	Action
Toner Cartridge is	Remove the Toner Cartridge and shake it gently. The
nearly empty. This can	cartridge will soon require replacement.
cause uneven toner
distribution.
Toner Cartridge has	Store the Toner Cartridge in a darkened environment
been exposed to too	for several days. This may restore the photosensitive
much light.	potential.
Foreign objects in	Remove the Toner Cartridge and check for damage.
beam path. Any	Replace the Toner Cartridge if it is damaged.
foreign objects will
block the light from	Remove the Printer Cover and inspect the path from
developing an image	the Laser/Scanner to the Toner Cartridge drum,
on the Photosensitive	looking for foreign objects in the beam path.
drum.

EN Troubleshooting the Printing System 7-71