The printer enters sleep mode or turns off automatically if no operations are performed for a specified period. You can adjust the time before power management is applied. Any increase will affect the product's energy efficiency. Please consider the environment before making any change.
Select More on the home screen on the printer's control panel.
To select an item, use the 
buttons, and then press the OK button.
Select Settings > Printer Setup.
Do one of the following.
Your product may have the Power Off Settings or Power Off Timer feature depending on the location of purchase.
Adjust settings as needed.