emanuel stiebler wrote:

> Hi,
> Just tried to upgrade my 4000/400 to a 4000/600.
>
> Nu success :-(
>
> I guess, it's simply exchanging the CPU boards, right ?
> Anything else to do ?

Well normally you can't just replace the 400 CPU board with a 600 CPU
board, since the 600 CPUs aren't compatible to the older 200/300/400
backplanes. There are some newer systems witch have 300/400 CPUs and
have the newer backplane witch supports the 600 CPU. Check if your
system has a H7206-B power controler. If it doesn't you won't be able to
use the 600 CPU.

Best Regards - Chris