Ricoh EMP 156 User Manual page 3

Our company, as a partner in the Energy Star Program, considers that this product
satisfies the appropriate standard covered in this program.
:
NOTE
The EMP156 printer comes with the power management mode enabled and will go
into a "Sleep" mode after 15 minutes if there is no printing or communications with
the printer.
These are default settings and should remain in these conditions to get the energy
saving benefits of Energy Star.