Hi Brian:

The usual answer... it depends!

I assume your unit is a recognized component or
equivalent.  If you change a component that is
among the "safety-critical" components, then you
must re-submit the R/C.

I assume the end item is a fully certified unit
with a certification report that specifies the R/C.
In this case, the end-item certification need not
be changed as R/C = R/C.

However, the courteous thing to do is to notify
the end-item cert house of the change.

Need more info to provide more details.  (I may
have totally mis-interpreted your question.)


Best regards,
Rich





On 12/9/2010 15:23, Brian O'Connell wrote:
> We get non-warranty returns.
>
> Is there any significant risk if I change the VDR to conform to IEC60950-1
2d ed if the unit was installed in an end-item certified to IEC60950-1 1st ed
or previous?
>
> Brian
>

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