HP LaserJet 1020 Plus Printer - Manual (Page 75)

Loose toner
● Clean the inside of the printer. See Cleaning the printer
on page 40 for instructions.
● Check the media type and quality. See Printer media
considerations on page 11 for more information.
● Install a new HP print cartridge. See Changing the print
cartridge on page 51 for instructions.
● In your printer driver, make sure that the appropriate
media type is selected.
● Plug the printer directly into an AC outlet instead of into a
power strip.
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
Changing the print cartridge
on page 51 for instructions.
● The internal parts might have toner on them. See
Cleaning the printer on page 40 for more information. 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 that 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
Printer media considerations on page 11 for
more information.
● If characters are improperly formed, producing a wavy
effect, the printer might need service. Print a Printer Test
page. If the characters are improperly formed, contact an
HP-authorized dealer or service representative. See
How
to contact HP on page 98 for more information.
ENWW Improving print quality 65