AR-651 (serv.man25). AR651 810 Operation Manuals - Sharp Copying Equipment User Guide / Operation Manual. Page 19

When this key is pressed, all selected copy modes are cleared to default settings. 

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* Automatic CLEAR ALL 

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  STOP  key
Use this key to stop an ongoing scan and copy operation. 

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Press this key to start copying.

While copying is already in progress, press this key when you want to make copies of different originals.
Pressing the key again will return you to the previous copy job.

When you are not going to use the copier for a while, press this key, which automatically turns off all
display lamps.  To resume copying, press this key again.
If you press this key when the optional printer controller is installed, the power supply to the printer board

is not cut off, which allows automatic return of the device when it receives printer data.

TIMER lamp
TIMER lamp lights when the weekly timer is being used.

Clip tray
Put clips or staples unfastened out of originals.

Even if you do not press the   CLEAR ALL  key,
within the specified period of time after copying is
finished or after the last key is pressed in a copy
procedure, the automatic CLEAR ALL mode will work
to clear all settings to defaults, and the basic screen
will be displayed. While the Account Number mode
is being operated, the display returns to the account

number input screen. 

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