HP Officejet Pro K550 Printer - Manual (Page 48)

Resolving printing problems
Printer shuts down unexpectedly
Check the power and power connections
▲ Make sure the printer is connected firmly to a functioning alternating current (AC) power outlet.
See
Electrical specifications for voltage requirements.
Check the printer vents
▲ The printer vents are located on the sides of the printer. If the vents are covered and the printer
overheats, the printer automatically turns off. Make sure the vents are not covered and the
printer is in a cool, dry location. See
Environmental specifications for the required operating
environment for the printer.
All printer lights are on
A non-recoverable error has occurred
▲ Disconnect all cables (such as power cord, network cable, and USB cable), wait about 20
seconds, and reconnect the cables. If the problem persists, visit HP website (
www.hp.com/
support/officejetprok550 ) for the latest troubleshooting information, or product fixes and updates.
Printer is not responding (nothing prints)
If the printer supports wireless communication, see also Problems setting up or using wireless
communication .
Check the printer setup
▲ See General troubleshooting tips .
Check the printhead initialization
▲ When printheads are installed or replaced, the printer automatically prints a few alignment pages
to align the printheads. This process takes about 8 minutes. Until this process is complete, only
the automatic alignment pages can be printed.
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 .
40 Chapter 4 Maintaining and troubleshooting ENWW