Lucifer wrote:

I will check the battery and RAM placement. Thanks.

It has 6 x 2GB RAM cards. 3 for each CPU. Only 3 cards (6GB)
show in System Profiler.
I could have all 6 RAM cards for the one CPU but I'd really
like to have both CPUs working.

I've never seen one of those Xserves up close but have resurrected from the
dead a few Sun servers. On Suns, the memory is more of a pool where is
installed correctly, either cpu can grab as much ram as it needs, in other
words, it's not dedicated to each cpu.

But who knows with apple.

I don't know if you have this or ran across it...

https://support.apple.com/kb/DL1428?locale=en_US

but it seems to contain the hardware diagnostics for that thing, at least
the part of it called AXD EFI.

There are other versions, 3x104, 3x106 but one of them should work.

As the other guy (John?) mentioned, there could be a pair of simm looking
things that are called VRM's, usually one for the cpu, the other for the ram
bank, 4 all together (2cpu, 2ram). You can usually swap the cpu ones just to
see if the off-led follows to the other one. If so, you know what to look
for.

I can't find a diagram of that thing anywhere so only taking a guess there.

They are socketed like the simms and the only reason for that is again, on
the Suns, they are changed if the cpu is upgraded. I don't know if they go
bad, never had a bad one.

Good luck.

-bruce