HP LaserJet Enterprise MFP M430, M431 User Guide

Table Of Contents
Table 9-11 Output defects
Sample Description Possible solutions
Printed pages have curled edges. The curled
edge can be along the short or long side of
the paper. Two types of curl are possible:
Positive curl: The paper curls toward
the printed side. The defect occurs
in dry environments or when printing
high-coverage pages.
Negative curl: The paper curls away
from the printed side. The defect
occurs in high-humidity environments
or when printing low-coverage pages.
1. Reprint the document.
2. Positive curl: From the printer control
panel, select a heavier paper type. The
heavier paper type creates a higher
temperature for printing.
Negative curl: From the printer control
panel, select a lighter paper type. The
lighter paper type creates a lower
temperature for printing. Try storing
the paper in a dry environment prior to
use, or use freshly opened paper.
3. Print in duplex mode.
4. If the issue persists, go to
support.hp.com.
The paper does not stack well in the output
tray. The stack might be uneven, skewed,
or the pages might be pushed out of the
tray and onto the oor. Any of the following
conditions can cause this defect:
Extreme paper curl
The paper in the tray is wrinkled or
deformed
The paper is a non-standard paper
type, such as envelopes
The output tray is too full
1. Reprint the document.
2. Extend the output bin extension.
3. If the defect is caused by
extreme paper curl, refer to the
troubleshooting steps for "Output
curl."
4. Use a dierent paper type.
5. Use freshly opened paper.
6. Remove the paper from the output
tray before the tray gets too full.
7. If the issue persists, go to
support.hp.com.
Table 9-12 Streak defects
Sample Description Possible solutions
Light vertical streaks that usually span the
length of the page. The defect displays only
in areas of ll, not in text or sections with no
printed content.
1. Reprint the document.
2. Remove the cartridge, and then shake
it to redistribute the toner. Reinsert
the toner cartridges into the printer
and close the cover. For a graphical
representation of this procedure, see
Replace the toner cartridges.
3. If the issue persists, go to
support.hp.com.
NOTE: Both light and dark vertical streaks
can occur when the printing environment is
outside the specied range for temperature
or humidity. Refer to your printer's
environmental
specications for allowable
temperature and humidity levels.
Troubleshoot image defects 193