AR-153EN (serv.man8). Please see AR122E Operation manual - Sharp Copying Equipment User Guide / Operation Manual. Page 20

This chapter describes the special functions of this unit. Use these functions as 
needed.

Reduces toner consumption by approximately 10%.

Power save modes (page 19)

The unit has two power save modes of operation: preheat mode and auto power 
shut-off mode.

When the unit enters the preheat mode, the power save (

) indicator will light up 

and other indicators will remain on or off as before. In this condition, the fuser in 
the unit is maintained at a lower heat level, thereby saving power. To copy from 
the preheat mode, make desired copier selections and press the start (

) key 

using the normal copying procedure.

When the unit enters the auto power shut-off mode, the power save (

) indicator 

will light up and other indicators except the ONLINE indicator will go out. The auto 
power shut-off mode saves more power than the preheat mode but requires a 
longer time before starting copying. To copy from the auto power shut-off mode, 
press the start (

) key. Then make desired copier selections and press the start 

(

) key using the normal copying procedure.

Auto clear (page 19)

The unit returns to the initial settings a preset amount of time after the end of copy, or 
scanner job. This preset amount of time (auto clear time) can be changed.

You can set the copy resolution used for AUTO and MANUAL (

) exposure 

mode.