Re: Looking for comments on the 15-pin ethernet connector


Richard Johnson (raj%glacier.ics.uci.edu@ROME.ICS.UCI.EDU)
Thu, 16 Jun 88 12:33:07 -0700


We have a lot of Sun fileservers around here and thus we've had a lot of
problems with the transceiver connectors. The problem with Sun equipment
in particular is that the fashion in which the connector is attached to
the outside of the ethernet board (same thing goes for the ethernet connector
on the CPU board). The screws onto which the slide connector is supposed
to catch are mounted on the OUTSIDE of the board whereas the connector
itself is mounted on the INSIDE. This means that the transceiver cable
connector can't make full contact with the one on the board. (I tried to
draw this in this message but it's too difficult.) The problem is that
the pins on the transceiver cable connector side don't go all of the way
into the holes on the board side because the catches for the connector
are mounted too far away from the top of the board side connector. (Take
a look at it, you'll see.)

We finally just removed the screws from both sides as well the slide latch
and replaced them with screws going straight through the cable side connector
and into the nuts on the board side connector. This allows the connectors
to be close enough together so that they make good contact. We've never had
problems with any that we done this to so this is the first thing I do
whenever we start having problems now.

If Sun would solve the basic problem, however (as described above) I think
the latches would be just fine.

-----------------------------------------------------------------------------
Richard A. Johnson raj@rome.ics.uci.edu (Internet)
UCI ICS Assistant Technical Manager ucbvax!ucivax!raj (UUCP)
Postmaster / Network Services raj@tertius.ics.uci.edu (via Nameservers)



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