[rescue] 3-1-4-3 beep error codes on Sun Ultra20 m2 system

Andrew M. Hoerter amh at POBOX.COM
Mon Jan 8 20:59:09 CST 2018

On Mon, Jan 08, 2018 at 05:57:13PM -0600, Jerry Kemp wrote:

>Anyway, start with plugging it in.  Had not used this box in a few years.  
>Fan(s) wind up to full speed, but no output what-so-ever on the monitor.  
>Fans never wind down.
>I'm guessing that the motherboard has died, and I am left with its 
>components to find new homes for.
>Wanted to post here first to see if anyone else had any thoughts or 

You did say that you checked the Sun documentation already, but I
found a page suggesting that there's a 7-segment LED on the 
motherboard showing POST progress codes.  If you haven't already
found that, seems like it might be helpful.  Or maybe this doesn't 
apply to your particular model.  In any case, here it is:


More information about the rescue mailing list