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What does it mean when an Altivar 66 display shows the image of a keypad and a drive with a line between the two and an ``X`` across the line?

This indicates a link fault or keypad link fault (not to be confused with a serial communication link fault).  This means communication between the keypad and the control board has been interrupted.  

It may be the keypad is mis-seated, there is a loose keypad cable (if applicable), the control board of keypad has malfunctioned, or there is a power board issue.  Additionally, users should check the amount of loading on the drive`s power supplies (e.g., option boards, logic inputs, analog & logic outputs, etc) to make sure it is not overloaded.

Each of these should be checked in turn to isolate.



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