HP LaserJet Pro M402d - Page 166

Table 2-12 Print quality examples (continued)
Problem Cause Solution
The printed page contains misformed
characters.
The media might not meet
HP specications.
Use a dierent paper, such as high-quality
paper that is intended for laser printers.
If characters are incorrectly formed so that
they produce a wavy eect, the laser/
scanner might need service.
Verify that the problem also occurs on the
conguration page. Replace the laser
scanner assembly.
The printed page is curled or wavy. The product is not set to print on the type
of media on which you want to print.
In the printer driver, select the Paper tab
and set Type is to match the type of paper
on which you are printing. Print speed
might be slower if you are using heavy
paper.
The Service menu item Less Paper Curl is
set to O.
Use the control-panel menus to change the
setting.
The media might not meet
HP specications.
Use a dierent paper, such as high-quality
paper that is intended for laser printers.
Both high temperature and humidity can
cause paper curl.
Check the product environment.
Text or graphics are skewed on the printed
page.
The media might be loaded incorrectly. Ensure that the paper or other print media
is loaded correctly and that the media
guides are not too tight or too loose
against the stack. See the user guide.
The media might not meet
HP specications.
Use a dierent paper, such as high-quality
paper that is intended for laser printers.
The registration shutter spring is
unhooked.
Check the spring and place it in the correct
position if is disengaged.
The registration shutter spring is
deformed.
Replace the registration assembly.
The printed page contains wrinkles or
creases.
The media might be loaded incorrectly. Verify that the media is loaded correctly
and that the media guides are not too tight
or too loose against the stack. See the user
guide.
Turn over the stack of paper in the input
tray, or try rotating the paper 180° in the
input tray.
The media might not meet
HP specications.
Use a dierent paper, such as high-quality
paper that is intended for laser printers.
The feed roller or paper feed guide is dirty. Clean any dirty parts.
The feed roller is deformed or worn. Replace the feed roller that is deformed or
worn.
The paper feed guide is damaged. Replace the paper feed guide.
148 Chapter 2 Solve problems ENWW