I am having some issues with our Agilent 7890A GC coupled with an Agilent 7000 QQQ MS. The system had been running very well for months and a few days ago we started receiving errors when we were running a sequence. After a few samples it read "QQQ fault detected 1.2 ion body driver cannot maintain requested voltage". In what case the error is repeatedly occurred, we need to justify about the error in a investigation report, please suggest and give necessary actions.