HP LaserJet P1007 Printer - Manual (Page 81)

Loose toner
● Clean the inside of the device. See Clean the device
on page 47 .
● Check the media type and quality. See Supported paper
and other media on page 21 .
● Try installing a new HP print cartridge. See Replace the
print cartridge on page 40 ].
● In your printer driver, make sure the appropriate media
type is selected.
● Plug the device directly into an AC outlet instead of into
a power strip or surge protector.
Vertical repetitive defects
● The print cartridge might be damaged. If a repetitive mark
occurs at the same spot on the page, install a new
HP print cartridge. See
Replace the print cartridge
on page 40 .
● The internal parts might have toner on them. If the defects
occur on the back of the page, the problem will probably
correct itself after a few more printed pages.
● In your printer driver, make sure the appropriate media
type is selected.
Misformed characters
● If characters are improperly formed, producing hollow
images, the media stock might be too slick. Try a different
media. See
Supported paper and other media
on page 21 .
● If characters are improperly formed, producing a wavy
effect, the device might need service. Print a
configuration page. If the characters are improperly
formed, contact an HP-authorized dealer or service
representative. See
Contact HP support on page 62 .
ENWW Improve print quality 71