HP Officejet Pro K850dn Printer - Manual (Page 84)

● If the printer is connected directly to a computer, it is set up to point to the correct port.
● If the printer is connected to a network, the correct IP address is used.
Resolving printing problems
Printer shuts down unexpectedly
Check power and power connections.
Make sure the printer is connected firmly to a functioning alternating current (AC) power outlet. See
Printer specifications for voltage requirements.
All printer lights are blinking
A non-recoverable error has occurred.
Reset the printer. See Troubleshooting .
If the problem persists, contact HP. See Support and warranty .
Printer is not responding (nothing prints)
Check printer setup
See General troubleshooting tips .
Check the printhead initialization
When new printheads are installed, the printer automatically prints two alignment pages to align the
printheads. This process takes about eight minutes. Once the process starts you cannot print until
the automatic alignment pages have been printed.
When printheads are removed and then reinserted in the printer, the alignment pages do not print
automatically. See
To align the printheads .
Check the printer software installation
If the printer is turned off when printing, an alert message should appear on your computer screen;
otherwise, the printer software might not be installed correctly. To resolve this, uninstall the software
completely, and then reinstall the printer software. See
Uninstalling the printer software .
Check cable connections
● Make sure both ends of the cable (USB, parallel, or network) are secure.
● If the printer is connected to a network, check the following:
● Verify that the Link light on the back of the printer is on.
● Make sure you are not using a phone cord to connect the printer.
● The network hub, switch, or router is on and working properly.
76 Chapter 5 Maintaining and troubleshooting ENWW