HP Color LaserJet 4500 Printer series - Manual (Page 162)

162 Solving Problems with the Printer EN
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Uneven dark areas or lines in solid fill areas on transparencies
Problem Solution
You are using transparencies that do not meet
the media specifications for this printer. Use only transparencies that meet the media
specifications for this printer. See the Printing
on Transparencies section of chapter 3
The imaging drum has exceeded its useful life. Print out a configuration page to verify the
remaining life of the imaging drum. If the
printer control panel displays DRUM KIT OUT
REPLACE DRUM KIT, replace the imaging
drum.
Repetitive defects
Problem Solution
Unwanted marks of the same size
and shape appear in the same
vertical area on most pages. Print out a configuration page to
verify the remaining life of the
imaging drum. If the printer control
panel displays DRUM KIT OUT
REPLACE DRUM KIT, replace the
imaging drum.
Unwanted marks of the same size
and shape appear more than once
in the same vertical area on
transparencies or glossy media only. The fuser roller is damaged or the
fuser is beyond its useful life. Print
out a configuration page to verify the
remaining life of the fuser. If the
printer control panel displays
FUSER LIFE OUT REPLACE KIT,
replace the fuser.
Repetitive defects appear only in
one color. Check the corresponding toner
cartridge.