HP Color LaserJet 4500 Printer series - Manual (Page 161)

EN Chapter 9 161
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Horizontal streaks on transparencies
Problem Solution
The printer’s imaging drum is past
its useful life. Print a configuration page to verify
the remaining life of the imaging
drum. Replace the imaging drum if
necessary.
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
HP LaserJet Printer
Family Paper Specification Guide.
Smudges
Problem Solution
The printer recently jammed. Print 5 to 10 pages to clean the printer.
You recently changed to a different media size. Print 5 to 10 pages to clean the printer.