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1261.0. "DEC 7610 multi voltage regulator seating prob?" by GIDDAY::BENBROOK (Brisbane ruLes) Fri May 02 1997 04:31

	  I've been working with a DEC 7610 that has intermittent instances
	where Errorlog has all 3 XMI devices register errors.   An earlier
	note suggested the "multi voltage regulator" could be the cause.
	Since the symptom certainly could be power related, I went for a swap.

	  Horrors!!!!!     On checking the regulator, and replacing it, I
	found that neither the original one, nor the new one, was making
	any more than 1/16" worth of contact with its receptacle !!!

	  I removed the large supply (to compare connectors) and found a large
	difference in the seating of the regulators.   This large supply has
	at least 1/4" of contact - the connector it meshes with sits out a 
	whole lot more than the multi voltage connector does.

	  Since the site has 2 7610's, we took the other system down - and
	found it was identical.   Again, the multi voltage supply is only just
	in mesh with its connector (approx. 1/16" too).

	  I could see no way to mount the connector further out (to give
	better contact) so simply replaced the regulator anyway, and decided
	to burst into print ...

	  I did use DIR/TITLE using POWER, SEATing, CONNECTor, REGULATor &
	MULTI to see if this had been mentioned previously, but found nothing.

	  I believe the tiny amount of meshing is a potential trouble spot,
	but what do others think ?   Anyone been there, done that ??  


Les Benbrook,
MCS Brisbane.