HEIDENHAIN iTNC 530 Service Manual page 419

Removing the 
defective MC 422




SIK


May 2006
Switch off main switch of the machine and take precautions against resetting.
--> See "Safety Precautions" on page 1 – 9!
Label and remove all of the connections on the MC.
Loosen two torx screws at the top and two at the bottom of the housing (do not screw off
completely).
Remove the defective MC by drawing it towards you by the handles until the MC disengages
from the CC.
Now you can pull out the MC at a slight angle to the right.
Caution
Observe the ESD precautions. --> See "Important Information" on page 26 – 411!
Remove the SIK from the defective MC 422 and insert it into the new MC 422.
Caution
The SIK (System Identification Key) will remain with the machine.
It must be inserted into the new or replacement MC; i.e. all enabled options are still
available.
Only defective SIKs are exchanged.
If options were enabled on the defective SIK, you will receive the code numbers to enable
these on your new SIK after giving us the number of your defective SIK.
The number is displayed on the screen after entering the SIK code. It can also be found
on the SIK housing or on a sticker below the ID label of the MC.
The defective SIK has to be returned.
Remove the label with the SIK number (over the ID plate) from the MC and apply it on the new
MC 422 (over the ID plate).
Secure the hard disk for the transport!
(See sticker on the housing of the MC 422)
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