HP CB015A User Manual - Page 64

Poor quality printouts, Meaningless characters print, Turn off the device after removing the printhead

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Chapter 5 Poor quality printouts 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 The paper might be too moist or too rough. 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 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. Turn off the device after removing the printhead Remove the printhead. Place the printhead on a sheet of paper or paper towel. Make sure the nozzle is facing up and not in contact with the paper. Turn off the device, wait about 20 seconds, and turn it on again without the printhead installed. After it has restarted, reinsert the printhead. 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 and wait again. When the device is ready, resend the job. If prompted by the computer to retry the job, click Cancel. 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. 60 Maintain and troubleshoot

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Poor quality printouts
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
The paper might be too moist or too rough. 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
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.
Turn off the device after removing the printhead
Remove the printhead. Place the printhead on a sheet of paper or paper towel. Make
sure the nozzle is facing up and not in contact with the paper. Turn off the device, wait
about 20 seconds, and turn it on again without the printhead installed. After it has
restarted, reinsert the printhead.
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 and wait again. When the device is
ready, resend the job. If prompted by the computer to retry the job, click
Cancel
.
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.
Chapter 5
60
Maintain and troubleshoot