Servo IPM alarm 449

[Assamalla]

Hello,
we have Mori Seiki SL-153SY with Fanuc 18i.
In mornings after power on there is a servo alarm 449 (IPM alarm) on Z or on Z and A axes
(on united servo module alarms 8. or b.) some times.
Probably is faulty a servo amplifier A06B-6096-H207. But how to change it?
If we buy a new / repaired amplifier or change it with same type Y-B axis module (to specify fault location more precisely), absolute position data in the memory (battery 6V) maybe lost. How to prevent it or to restore the positions?

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[tristarcnc]

The problem is within your servo amplifier. There is no way to maintain the absolute position and the zero postion will need to be reset. I suggest contacting your local Mori Seiki distributor for a procedure to reset set the axis zero positions.