MX-M950, MX-MM1100 (serv.man50). User Manual - Sharp Copying Equipment User Guide / Operation Manual. Page 17

There are status indicators at the top of the operation panel.
There are both red and green indicators, and these light or blink to indicate the machine's status.

The status indicators light or blink to indicate the following conditions.

The green indicator has two indicating patterns. The indicating pattern can be changed using "Status Indicator Settings" 
in the system settings (administrator). The factory default setting is "Pattern 1".

A problem exists but the machine 
can be used.
(The toner cartridge is out of toner 
and the machine is using the spare 
toner, etc.)

Job in progress
(During paper feeding and 
output.)

Standby

A problem exists that prevents the 
machine from being used (out of 
toner, paper misfeed, etc.)

Original scanning in progress

Job in progress
(During original scanning, paper 
feeding, and output)

No problems

Standby

Jobs cannot be accepted

• If solidly lit and blinking states occur simultaneously, the blinking state is given priority.

• When auto power shut-off has occurred, the status indicators turn off.

System Settings (Administrator): Status Indicator Settings
Use this to change the indicator settings of the green status indicator.