Well, before you do any FORCED BACK UP, do this:
Menu > Maintenance > System > Error Log > Permanent > and then DROP all of them, and then back up and do the same to TRANSIENT ERRORS.
That should make your light go out.
NO - YOU DO NOT NEED TO POWER DOWN -
To do a Back Up, go to MENU > System Program > Start > SYSTEM > Back Restore and choose a BACK UP LOCATION on the LEFT SIDE of the Screen >