HP OfficeJet Pro K8600 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 information on minimum and
recommended system requirements, see 
System requirements. In addition, if the
computer is too busy running other programs, documents can print more slowly.
Check the device software settings
Print speed is slower when Best or Maximum dpi is selected as the print quality. To
increase the print speed, select different print settings in the device driver. For more
information, see 
Change print settings.
Blank or partial page printed
Check for empty ink cartridges
Check the control panel or the embedded Web server (see 
Embedded Web server) to
see which cartridge is low or empty. The Toolbox (Windows), HP Printer Utility (Mac
OS), and the self-test diagnostic page (see 
Understand the self-test diagnostic page)
provide information about ink levels. If you are printing black text and a blank page
prints, the black cartridge might be empty. For more information, see 
Replace the ink
cartridges.
Check the printhead latch
Make sure the printhead latch is properly closed.
Check the printhead
• Make sure the printhead is inserted into its correct color-coded slot. For more
information, see 
To 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
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
Solve printing problems57
 
						

							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 any
problem areas, and perform the recommended actions. For more information, see 
To
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 trays are not overloaded. For more information, see 
Load
media.
Check the media size
• Content on a page might be cut off if the document size is larger than the media
that you are using.
• Make sure the media size selected in the printer driver match the size of media
loaded in the tray.
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							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 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.
If the above solutions do not work, the problem may be caused by the inability of the
application to interpret print settings properly. See the release notes for known
software conflicts, refer to the applications documentation, or contact the software
manufacturer for specific help.
Device prints half a page, then ejects the paper
Check the ink cartridges
The ink cartridges may be low on ink, and the print job was cancelled. Replace the ink
cartridges, and then resend the print job to the device. For more information, see
Replace the ink cartridges.
Poor print quality and unexpected printouts
This section covers the following topics:
•
Poor quality printouts
•
Meaningless characters print
•
Ink is smearing
•
Ink is not filling the text or graphics completely
•
Output is faded or dull colored
•
Colors are printing as black and white
•
Wrong colors are printing
•
Printout shows bleeding colors
•
Colors do not line up properly
•
Lines or dots are missing from text or graphics
Poor print quality and unexpected printouts59
 
						

							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.
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							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 under the advanced features
(Windows) or ink features (Mac OS). However, note that decreasing ink saturation
might give printouts a washed-out quality.
• Color documents that have rich, blended colors can wrinkle or smear when printed
using the Best print quality. Try using another print mode, such as Normal, to
reduce ink, or use HP Premium Paper designed for printing vivid color documents.
For more information, see 
Change print settings.
Check the media type
Some types of media do not accept ink well. For these types of media, ink will dry
more slowly and smearing may occur. For more information, see 
Select print media.
Ink is not filling the text or graphics completely
Check the media type
Some media types are not suitable for use with the device. For more information, see
Select print media.
Check the print mode
Try using the Best mode in the printer driver. For more infromation, see 
Change print
settings.
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.
Output is faded or dull colored
Check the print mode
To get better results, select Normal or Best. For more information, see 
Change print
settings.
Poor print quality and unexpected printouts61
 
						

							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 settings
Make sure Print in Grayscale is not selected in the printer driver. For information on
changing this setting, see 
Change print settings.
Wrong colors are printing
Check the 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 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.
Printout shows bleeding colors
Check the ink cartridges
Make sure ink cartridges have not been tampered with. Refilling processes and the
use of incompatible inks can disrupt the intricate printing system and result in reduced
print quality and damage to the device or printhead. HP does not guarantee or support
refilled ink cartridges. For ordering information, see 
HP supplies and accessories.
Check the media type
Some media types are not suitable for use with the device. For more information, see
Select print media.
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.
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							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 printer driver. For more information, see 
Change print
settings.
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.
Solve paper-feed problems
For information on resolving jams, see Clear jams.
•
A paper-feed problem is occurring
A paper-feed problem is occurring
Media is not supported for the printer or tray
Use only media that is supported for the device and the tray being used. For more
information, see 
Understand specifications for supported media.
Media is not picked up from a tray
• Make sure media is loaded in the tray. For more information, see 
Load media. Fan
the media before loading.
• Make sure the paper guides are set to the correct markings in the tray for the
media size you are loading. Also make sure the guides are snug, but not tight,
against the stack.
• Make sure media in the tray is not curled. Uncurl paper by bending it in the
opposite direction of the curl.
Solve paper-feed problems63
 
						

							• 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 stack height is within this range.
Media is not coming out correctly
• Make sure the output tray extension is extended; otherwise, printed pages may fall
off the device.
• Remove excess media from the output tray. There is a limit to the number of
sheets the tray can hold.
Pages are skewing
• Make sure the media loaded in the trays is aligned to the paper guides. If the tray
is removable, pull out the tray from the device and reload the media properly,
making sure that the paper guides are properly aligned.
• Make sure the rear access panel or duplexer is properly installed.
• Load media into the device only when it is not printing.
• 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.
Multiple pages are being picked up
• Fan the media before loading.
• Make sure the paper guides are set to the correct markings in the tray for the
media size you are loading. Also make sure the guides are snug, but not tight,
against the stack.
• Make sure the tray is not overloaded with paper.
• 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.)
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							• 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 efficiency.
• Do not load the paper when the carriage is moving.
Solve device management problems
This section provide solutions to common problems that involve managing the device.
This section contains the following topic:
NOTE:If you are accessing the Embedded Web Server using HTTPS protocol,
you may encounter browser security warnings. This is normal. You can install the
certificate and continue to the EWS website.
•Embedded Web server cannot be opened
Embedded Web server cannot be opened
Check your network setup
• Make sure you are not using a phone cord or a cross cable to connect the device
to the network. For more information, see 
Configure the device (Windows) or
Configure the device (Mac OS).
• Make sure the network cable is securely connected to the device.
• Make sure the network hub, switch, or router is turned on and working properly.
Check the computer
Make sure the computer that you are using is connected to the network.
Check your Web browser
Make sure the Web browser meets the minimum system requirements. For more
information, see 
System requirements.
Check the device IP address
• To check the IP address of the device from the control panel, print the network
configuration page. For more information, see 
Understand the network
configuration page.
• Ping the device using the IP address from the command prompt.
For example, if the IP address is 123.123.123.123, type the following at the MS-
DOS prompt:
C:\Ping 123.123.123.123
If a reply appears, the IP address is correct. If a time-out response appears, the IP
address is incorrect.
Solve device management problems 65
 
						

							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 should be
on. If a light other than the Power light is on or blinking, there is an error. For more
information, see 
Control-panel lights reference.
• Make sure that the device can print a self-test diagnostic page.
• Make sure that the rear access panel or duplexer is locked into place.
Check the hardware connections
• Make sure that any cords and cables that you are using are in good working order.
• Make sure that the power cord is connected securely to both the device and to a
working power outlet.
Check the printheads and ink cartridges
• Make sure that all of the printheads and ink cartridges are firmly installed in their
correct, colorcoded slot. Press down firmly on each one to ensure proper contact.
The device cannot work if they are not all installed.
• Make sure that all latches and covers are closed properly.
Software installation suggestions
Check the computer system
• Make sure that your computer is running one of the supported operating systems.
• Make sure that the computer meets at least the minimum system requirements.
• In the Windows device manager, make sure that the USB drivers have not been
disabled.
• If you are using a computer running Windows, and the computer cannot detect the
device, run the uninstallation utility (util\ccc\uninstall.bat on the Starter CD) to
perform a clean uninstallation of the device driver. Restart your computer, and
reinstall the device driver.
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66 Maintain and troubleshoot