HP K850 User's Guide - Page 84

Resolving printing problems, Printer shuts down unexpectedly, All printer lights are blinking - printer printhead errors

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● 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

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●
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