4 Nov
2009
4 Nov
'09
6:24 a.m.
On Tue, 3 Nov 2009, Ian King wrote:
Hey Ian;
They are labelled as Clearpoint Research Corporate, DCMEV40, 128MBX.
They're covered in 4C1004s (if that makes sense to anyone).
I've determined which board is causing the failure, that was the easy part
- thankfully only a single board out of the set of four. The KA670 manual
does not describe in sufficient detail the diagnostic tests for memory to
determine any better what it's up to. I've started running the test
scripts manually to see if I can get better output from the test.
I found a diagnostics manual for VAX, "EK-1VAXD-TM-001 VAX Diagnostic
Design Guide". I haven't attached it yet, but it might prove more useful.
I have _never_ even attempted to repair a RAM board, so I'm not sure how
to go about isolating which chip is at fault... A new adventure!
- JP
Where would
the sages suggest I begin in tracking down a fault in one
of
the four boards:
http://www.kiwigeek.com/misc/VAX4000_Mem_Errors.JPG
My thanks to everyone who made very good, but due to my incompetance,
unused suggestions.
Glad to help, even if it wasn't needed. :-) So what boards are those?
The 4000/300 Technical Manual calls out two different memory boards, one
32MB, the other 64MB, and there are four memory slots. I'd *love* to
beef up my 4000 with more than 128MB. -- Ian 