restore factory defaults
You can restore the original factory settings to what they were when you
purchased your HP OfficeJet. Choosing to restore your factory defaults
restores all settings, except copy settings, speed-dial entries, date, and fax
You can perform this process from the front panel only.
Press 7, then press 5.
This selects the Status and Maintenance menu, then selects the Restore
Factory Defaults option.
The factory default settings are restored.