HP Officejet Pro L7480 All-in-One Printer - Manual (Page 73)

Check the printhead
•
Make sure the printhead is inserted into its correct color-coded slot. For more
information, see
Replace the printheads .
• Remove the printhead, and check to make sure the orange protective caps have
been removed from the printhead.
Clean the printhead
Complete the printhead cleaning procedure. For more information, see
Maintain the
printheads .
Turn off the device after removing the printhead
After removing the printhead, turn off the device, wait about 20 seconds, and turn it on
again without the printhead installed. After it has restarted, reinsert the printhead.
Something on the page is missing or incorrect
Check the printheads
Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any
problem areas, and perform the recommended actions. For more information, see
Print the print quality diagnostic page .
Check the margin settings
Make sure the margin settings for the document do not exceed the printable area of
the device. For more information, see
Set minimum margins .
Check the color print settings
Make sure Print in Grayscale is not selected in the printer driver. For information on
changing this setting, see
Change print settings .
Check the device location and length of USB cable
High electromagnetic fields (such as those generated by USB cables) can sometimes
cause slight distortions to printouts. Move the device away from the source of the
electromagnetic fields. Also, it is recommended that you use a USB cable that is less
than 3 meters (9.8 feet) long to minimize the effects of these electromagnetic fields.
Placement of the text or graphics is wrong
Check how the media is loaded
Make sure the media width and length guides fit snugly against the edges of the stack
of media, and make sure the tray is not overloaded. For more information, see
Load
media .
Solve printing problems 69