Service manual

Solving paper-feed problems
Use the following table to solve problems related to moving paper or documents through the product.
Table 6-7 Solving paper-feed problems
Pages are coming out curled or wrinkled.
Cause
Solution
Paper curl is inherent to the laser printing processes, and
occurs when paper is subjected to heat. Paper curl tends to
relax as the paper cools while resting on a flat surface.
Make sure that the media meets the specifications detailed in
the HP LaserJet family Print Media Guide.
Paper is not stored properly. Whenever possible, store paper in its sealed ream at room
temperature.
The media is too long for the printer output bin. Use the output-bin extension.
The printer is operating in humidity or temperature conditions
that are not within the recommended ranges.
Move the product to a different location.
The wrong type of media is selected in the Printer
Preferences dialog box.
Open the Printer Properties dialog box, and then click
Printing Preferences. Select the correct media type from the
Type Is drop down menu. Click OK to close the Printing
Preferences dialog box, and then click OK again to close the
Printer properties dialog box.
The media you are using does not meet HP specifications (for
example, it is too moist or too rough).
Make sure that the media meets the specifications detailed in
the HP LaserJet Printer Family Print Media Guide.
The media was in the input tray for too long. 1 Turn the stack of media over and put it back in the tray.
2 Rotate the media 180° and put it back in the tray.
Print is misaligned on the page (skewed pages).
Cause
Solution
The media is loaded incorrectly. Reload the media, and make sure that the side and rear media
guides are not too tight against the media stack or too loose.
The input tray is too full. Remove some of the sheets. The main input tray can hold up
to 150 sheets of 75 g/m
2
(20-lb) bond-weight paper (or fewer
pages of heavier media), a stack no higher than 25 mm (.98
inch). The priority input tray can hold up to ten sheets of 75 g/
m
2
(20-lb) bond-weight paper, one sheet of heavier media, or
one envelope or card.
The media you are using does not meet HP’s specifications
(for example, it is too moist or too rough).
Make sure that the media meets the specifications detailed in
the HP LaserJet Printer Family Print Media Guide.
The printer feeds multiple sheets or jams frequently from the main input tray or priority input slot.
Cause
Solution
122 Chapter 6 Troubleshooting ENWW