HP OfficeJet Pro K8600dn User Manual

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 the device has restarted, reinsert the
printhead.
Device takes a long time to print
Check the system resources
Make sure your computer has enough resources to print the document in a reasonable
amount of time. If the computer meets only the minimum system requirements,
documents might take longer to print. For more...

about 20 seconds, and turn it on again without the printhead installed. After it has
restarted, reinsert the printhead.
Check the media settings
• Make sure you select the correct print quality settings in the printer driver for the
media loaded in the trays.
• Make sure the page settings in the printer driver match the page size of media
loaded in the tray.
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...

Check the margin settings
If the text or graphics are cut off at the edges of the page, make sure the margin
settings for the document do not exceed the printable area of your device. For more
information, see 
Set minimum margins.
Check the page-orientation setting
Make sure the media size and page orientation selected in the application match the
settings in the printer driver. For more information, see 
Change print settings.
Check the device location and length of USB cable
High electromagnetic...

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...

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.
Ink is smearing
Check the print settings
• When you print documents that use much ink, allow more time to dry before
handling the printouts. This is especially true for transparencies. In the printer
driver, select the Best print quality, and also increase the ink drying time and
reduce the ink saturation using the ink volume...

Check the paper type setting
When printing on transparencies or other special media, select the corresponding
media type in the print driver. For more information, see 
To print on special or custom-
sized media (Windows).
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 
To
print the print quality diagnostic page.
Colors are printing as black and white
Check the print...

Colors do not line up properly
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 
To
print the print quality diagnostic page.
Check the graphics placement
Use the zoom or print preview feature of your software to check for gaps in the
placement of graphics on the page.
Lines or dots are missing from text or graphics
Check the print mode
Try using the Best mode in the...

• When using thin special media, make sure that the tray is completely loaded. If you
are using special media that is only available in small quantities, try placing the
special media on top of other paper of the same size to help fill the tray. (Some
media is picked up more easily if the tray is full.)
• If you are using thick special media (such as brochure paper), load media so that
the tray is between 1/4 and 3/4 full. If necessary, place the media on top
of other paper of the same size so that the...

• If you are using thick special media (such as brochure paper), load media so that
the tray is between 1/4 and 3/4 full. If necessary, place the media on top
of other paper of the same size so that the stack height is within this range.
• When reinserting a removeable tray into the device, do so gently. Forceful
insertion with a full stack of paper may cause sheets to slide up within the device,
causing the device to jam or pick multiple sheets at one time.
• Use HP media for optimum performance and...

Troubleshoot installation issues
If the following topics do not help, see Support and warranty for information about HP
support.
•
Hardware installation suggestions
•
Software installation suggestions
•
Solve network problems
Hardware installation suggestions
Check the device
• Make sure that all packing tape and material have been removed from outside and
inside the device.
• Make sure that the device is loaded with paper.
• Make sure that no lights are on or blinking except the Power light, which...