Good evening chaps we have a vmc 600 with tnc 370 control we are having following errors

Gross positioning error z c (less common)
Gross positioning error z b (most common)(daily)
processor check error b (less common)

we have noticed that this dose this on a z lift in a rapid but also last week i swapped out the rapids manualy to get the job done and it did it again witch is a pain i have spoken to technical over the phone and they say it could be a hole coast of things but it could be break sticking and maybe lube not getting to where it needs to be (illuminated that today by manually wiring up pump and priming with new oil)

Please note that it starts out fine and at the same point in a program it fails but the program works sometimes it makes a huge bang spindle spools down etc

any help would be appreciated i will go ahead and try clean connectors to the encoders tomorrow also its 3 degrees c in our workshop could that be an issue ?

much appreciated, chris

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