Problem Cause Solution
Marks repeatedly appear at even
intervals on the page.
The product is not set to print on the type of
paper on which you want to print.
In the printer driver, select the Paper/
Quality tab and set Paper Type to match
the type of paper on which you are printing.
Print speed might be slower if you are using
heavy paper.
Internal parts might have toner on them. The problem typically corrects itself after a
few more pages.
The paper path might need cleaning. Clean the paper path.
A component might be damaged. Use the repetitive defect ruler table to
determine the problem. See
Repetitive
defect ruler on page 119.
The printed page contains
misformed characters.
The paper might not meet HP specifications. Use a different paper, such as high-quality
paper that is intended for laser printers.
If characters are incorrectly formed so that
they produce a wavy effect, the laser/
scanner might need service.
Replace the laser/scanner. See Scanner
assembly on page 30.
The printed page is curled or
wavy.
The product is not set to print on the type of
paper on which you want to print.
In the printer driver, select the Paper/
Quality tab and set Paper Type to match
the type of paper on which you are printing.
Print speed might be slower if you are using
heavy paper.
If the problem persists, select a paper type
that uses a lower fuser temperature, such
as transparencies or light paper.
The paper might have been in the input tray
too long.
Turn over the stack of paper in the tray.
Also, try rotating the paper 180° in the input
tray.
The paper might not meet HP specifications. Use a different 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.
The fuser temperature might be curling the
paper.
HP LaserJet Professional M1130 MFP
series select a paper type that uses a lower
fuser temperature, such as transparencies
or light paper.
HP LaserJet Professional M1210 MFP
seriesAt the product control panel, turn on
the Less paper curl setting in the Service
menu.
140 Chapter 2 Solve problems ENWW
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