set the power save mode time
The bulb in your HP OfficeJet remains on for a specified period so that the
unit is immediately ready to respond to your request. When the HP OfficeJet
has not been used within that specified period, it turns the bulb off to
preserve power and displays Power Save On in the front-panel display. (You
can exit this mode by pressing any button on the front panel.)
Your unit is automatically set to enter power-save mode after 12 hours.
Follow these steps if you want the HP OfficeJet to enter this mode earlier.
Press 7, then press 6.
This selects the Status and Maintenance menu, then selects the Set
Power Save Mode Time option.
until the desired time appears, then press Enter.
maintain your hp officejet
hp officejet d series