HP Officejet Pro 8500 - Manual (Page 197)

General print quality troubleshooting
Check the printheads and ink cartridges
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
To
print the print quality diagnostic page .
Check the paper quality
Make sure the media meets HP specifications, and try to print again. For more
information, see
Select print media .
Check the type of media loaded in the device
•
Make sure the tray supports the type of media you have loaded. For more
information, see
Understand specifications for supported media .
• Make sure you have selected the tray in the print driver that contains the media
that you want to use.
Check the device location and length of USB cable
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. You can also try to use a
different USB cable to see if the USB cable has failed.
Meaningless characters print
If an interruption occurs to a job that is printing, the device might not recognize the rest
of the job.
Cancel the print job and wait for the device to return to the ready state. If the device
does not return to the ready state, cancel all jobs in the printer driver, power cycle the
device, and then print the document.
Check the cable connections
If the device and computer are connected with a USB cable, the problem may be due
to a poor cable connection.
Make sure the cable connections at both ends are secure. If the problem persists, turn
off the device, disconnect the cable from the device, turn on the device without
connecting the cable, and delete any remaining jobs from the print spooler. When the
Power light is on and not flashing, reconnect the cable.
Check the document file
The document file may be damaged. If you can print other documents from the same
application, try printing a backup copy of your document, if available.
Poor print quality and unexpected printouts 193