MAZAK QT 6G Servo problem

[eva_1686]

guys, i have a problem with my MAZAK QT 6G.....alarm that appear in the monitor is 84 " X- Driver Unit Power Malfunction"....i have checked and replaced some component in servo board ( the component that suspected are broken )
after that we tested. only 20minutes the alarm didn't appears.....

what should we do to solve this problem?

[eva_1686]

guys,i think i have found the problem....the problem is my X-axis motor is broken.....thx for ur attention.