mmm maintenance information 1=aa...aa, maintenance information 2=bb...bb, maintenance information 3=cc...cc

mmm: NET identifier

aa...aa: Maintenance information (necessary for checking other errors)

bb...bb: Maintenance information (necessary for checking other errors)

cc...cc: Maintenance information (necessary for checking other errors)

S: Continues processing, accepting the NET operation command in the fallback mode.

O: Contact the maintenance personnel.