PROBLEM

HELLO,THE MACHINE WORKS NORMALLY WHEN THE DOCTOR WORKS ON IT BUT WHEN HE LEAVES IT ON STANDBY WITH THE IMAGE FROZEN ROR 30 MINUTES FOR EXAMBLE AND THEN GOES TO USE IT AGAIN THEN THE MACHINE HANGS .CAN SOMEONE HELP ME TO FIND THE SOLUTION PLEASE? THANK YOU

Equipment: GE Healthcare - Voluson S-Series