Your HP manual reflects following:
:
Set Auto-On/Auto-Off mode
Auto-On\Auto-Off is an energy-saving feature of this product. After a
user-specified time period, the product automatically reduces its power consumption. The product returns to the ready state when a button is pressed or a print job is received.
NOTE:
Although the product lights are off in Auto-Off mode, the product will work normally when it receives a print job.
Change the Auto-On\Auto-Off setting
You can change how long the product remains idle (Auto-Off delay) before it enters Auto-Off mode. You can also select which events cause the product to turn on.
1.
In the Windows system tray, right-click the Device Settings
icon and then click the product name.
2.
Click the Device Settings button.
3.
Click the AutoOFF after delay button, and then select the Auto-Off delay from the drop-down list.
4.
Under AutoON to these events click the desired events (optional).
Advise