What to do with a VAX KA655 board that is prone to CDAL parity error?
Gordon JC Pearce
gordon at gjcp.net
Sat Dec 16 09:37:57 CST 2006
9000 VAX wrote:
> It looks clean and great, but it reports CDAL parity error (machine check
> 10) randomly if the panel head is installed in place, when it is processing
> bulk of data. If the panal head is hanging there loosely, the chance of
> getting a CDAL parity error is much much rarer.
> What could cause this problem? A defective cache memory chip? supportive
> chip? capacitors?
> Or is it better for me to unsolder the CPU and sell it to collectors?
> Any idea?
That's a bit odd. What is this "panel head" of which you speak? The
thing with the sockets on?
I'd wonder if there was some crazy earthing shenanigans going on.
More information about the cctalk