HP OfficeJet Pro K850 User Manual

							Configuring the printer (Mac OS) 
You can use the printer with a single Macintosh computer using a USB cable, or you can share the
printer among other users on a network.
Installing the software for network or direct connection
To install the software for network or direct connection
1.Connect the printer to the computer with the USB cable or to the network with a network cable.
2.Insert the Starter CD into the CD-ROM drive.
3.Click Install Driver and follow the onscreen instructions.
4.Select your connection type, click Done, and then follow the onscreen instructions.
5.If open, close the Print Center or Printer Setup Utility.
6.If necessary, share the printer with other Macintosh computer users.
●Direct connection: Share the printer with the other Macintosh computer users. For more
information, see 
Sharing the printer on a locally shared network.
●Network connection: Individual Macintosh computer users who want to use the network
printer must install the printer software on their computers.
Sharing the printer on a locally shared network
When you connect the printer directly, you can still share the printer with other computers using a
simple form of networking known as locally shared networking. Use this configuration only in small
groups or when usage is low. The computer that is connected to the printer is slowed down when
many users print to the printer.
Basic requirements for sharing in a Macintosh environment include the following items:
●The Macintosh computers must be communicating on the network using TCP/IP, and the
Macintosh computers must have IP addresses. (AppleTalk is not supported.)
●The printer that is being shared must be connected to a built-in USB port on the host Macintosh
computer.
●Both the host Macintosh computer and the client Macintosh computers that are using the shared
printer must have printer-sharing software installed and the printer driver or PPD for the printer
that is installed. (You can run the installation program to install the printer sharing software and
associated Help files.)
●The client Macintosh computers should have the appropriate HP printer drivers installed.
●The client Macintosh computers must be PowerMac computers.
For more information about USB printer sharing, see the support information that is available on the
Apple website (
www.apple.com) or the Mac Help on the computer.
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							To share among computers with the same operating system
1.Turn on printer sharing on the Macintosh computer (the host) that is connected to the printer:
Open System Preferences, click Sharing, click Services, and then select the Printer Sharing
check box.
2.To print from the other Macintosh computers (the clients) on the network, preselect the printer in
Sharing. Then, choose the neighborhood where the printer is shared and select the printer.
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							Uninstalling the printer software
Uninstalling the printer software (Windows)
If you are using Windows 2000 or Windows XP, you must have administrator privileges to uninstall
the printer software.
To uninstall the printer software
1.If the computer is connected directly to the computer using a USB cable, disconnect the printer.
2.Close any applications that are running.
3.From the Windows desktop, click Start, and then click Control Panel.
4.Double-click Add/Remove Programs.
5.Select the printer software that you wish to remove, and then click the button for adding or
removing software.
6.Follow the onscreen instructions to remove the software.
NOTEIf the uninstall process fails, restart the computer and complete the steps above
to uninstall the software.
If the software was not successfully installed or the installation program could not be
found, complete the following steps to run the uninstaller utility. (The uninstaller utility is
not available for computers running Windows NT 4.0.)
7.Disconnect the printer from the computer.
8.On the computer, restart Windows.
9.Insert the Starter CD in the CD drive, click Utilities, and then click the Uninstaller.
Uninstalling the printer software (Mac OS)
To uninstall the printer software
1.If the computer is connected directly to the computer using a USB cable, disconnect the printer.
2.Restart the computer.
NOTEIf you do not restart the computer before you uninstall the software, some files
are not removed from your computer when you run the Uninstall option.
3.Insert the Starter CD into the CD drive.
4.Double-click the CD icon on the desktop.
5.Double-click the setup icon and follow the onscreen instructions.
6.When the Main Installation dialog box appears, select Uninstall from the drop-down list located
in the upper-left part of the dialog box.
7.Follow the onscreen instructions to remove the printer software.
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							5 Maintaining and troubleshooting
This section provides information on maintaining ink cartridges and printheads, calibrating color and
line feed, using the configuration page, and troubleshooting various problems.
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							Replacing the ink cartridges
You can check the ink levels from the Toolbox (Windows) or the embedded Web server. For
information about using these tools, see 
Overview of printer management tools.
After removing a cartridge from its package, install it right away. Do not remove a cartridge from the
printer for long periods of time.
CAUTIONHP recognizes customers choice, but cannot guarantee the quality or reliability of
non-HP ink cartridges. Printer services or repairs required as a result of using non-HP or
refilled ink cartridges is not covered under warranty.
NOTETo find out which ink cartridges work with your printer, see HP supplies and
accessories.
To replace an ink cartridge
1.Press and release to open the ink cartridge cover.
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							2.Remove the ink cartridge that requires replacement by grasping it between your thumb and
forefinger and pulling it firmly toward you.
3.Remove the new ink cartridge from its package.
4.Insert the cartridge into its own color-coded slot. Press down firmly on the cartridge to ensure
proper contact.
5.Close the ink cartridge cover.
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							Maintaining the printheads
If printed characters are incomplete, or dots or lines are missing from printouts, this might be caused
by clogged ink nozzles and you might need to clean the printheads. To find out which printheads
work with your printer, see 
HP supplies and accessories.
When the quality of printouts deteriorates, complete the following:
●Check the health of the printheads. See 
To check printhead health.
●Align the printheads. See 
To align the printheads.
●Initiate the automatic printhead cleaning process. See 
To clean printheads automatically.
●Manually clean the printhead contacts. See 
To clean the printhead contacts manually.
●Replace the printheads, if the problems persist after cleaning. See 
Replacing the printheads.
CAUTIONHP is not responsible for damage to the printer that results from modifying the
printheads.
To check printhead health
Use the following means to check the printhead health. If the status of any printhead is bad, clean or
replace the printhead.
Toolbox (Windows)
Open the Toolbox. Click the Information tab, and then click Printhead Health.
Embedded Web server
Open the embedded Web server. Click the Information tab, and then click Ink Supplies in the left
pane.
Configuration page
From the control panel, print a printer configuration page by holding down 
 (Power button),
pressing 
 (Cancel button) once, and then releasing the Power button.
Check the message in the Printhead health line of the Printhead Status section of the configuration
page. See 
Understanding and printing the configuration page.
To align the printheads
Whenever you replace a printhead, the printer automatically aligns the printheads to ensure the best
print quality. However, if the appearance of your printed pages indicates that the printheads are
misaligned, you can align them manually.
Printer driver
●In Windows 2000 or XP, click the Services tab, click Service this device, and then follow the
onscreen instructions.
●In Windows 98, click the Services tab, click Align Printheads, and then follow the onscreen
instructions.
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							Toolbox (Windows)
▲Click the Printer Services tab, and then click Align Printheads.
HP Printer Utility (Mac OS)
▲Open Information And Support , click Align, and then follow the onscreen instructions.
Embedded Web server
1.Open the embedded Web server.
2.Click the Settings tab.
3.Click Maintenance in the left pane.
4.In the Printhead section, click Align printheadsin the drop-down list.
Control panel
1.
Hold down 
 (Power button).
2.Press 
 (Resume button) two times.
To clean printheads automatically
NOTEClean the printheads only when necessary; cleaning uses ink and shortens the life of
the printheads. There are three levels of cleaning available. After one level of cleaning,
perform the next level of cleaning only if the results are not satisfactory.
Printer driver
●In Windows 2000 or XP, click the Services tab, click Service this device, and then follow the
onscreen instructions.
●In Windows 98, click the Services tab, click Clean Printheads, and then follow the onscreen
instructions.
Toolbox (Windows)
▲Click the Printer Services tab, and then click Clean Printheads
HP Printer Utility (Mac OS)
▲Open Information And Support, click Clean, and then follow the onscreen instructions.
Embedded Web server
1.Open the embedded Web server.
2.Click the Settings tab.
3.Click Maintenance in the left pane, and then click the appropriate cleaning level in the drop-
down list in the Printhead section.
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							Control panel
1.
Press and hold 
 (Power button).
2.While holding down the button, do one of the following.
NOTEPerform the next level of cleaning only if results from the previous level are not
satisfactory.
a.For level 1 cleaning: Press  (Resume button) five times.
b.For level 2 cleaning: Press 
 (Resume button) six times.
c.For level 3 cleaning: Press 
 (Resume button) seven times.
3.
Release 
 (Power button). The printer begins the cleaning process.
To clean the printhead contacts manually
CAUTIONManually clean the printhead contacts only after you have attempted to clean the
printheads automatically. See 
To clean printheads automatically. Printhead contacts contain
sensitive electronic components that can be damaged easily.
1.Open the top cover.
2.Make sure the printer is turned on.
3.Wait two or three seconds and unplug the printer power cord.
NOTEDo not turn the printer off by pressing  (Power button). This causes the print
carriage to move out of reach.
4.Lift to open the printhead latch.
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