The Sparc 2 is special in that you have to reprogram the EEPROM to get
it to use ttya as the console when the keyboard isn't plugged in.  If you
don't, it tries to use the keyboard ort anyway.  (All other Suns taht I'm
familiar with, automatically switch to ttya if there is no keyboard,
including the SLC and ELC machines.)
So, you need to get a sun keyboard, plug it in, wait about 15 seconds after
yo turn on the power, press L1-a, and type:
>n
OKsetenv input-device ttya
OKsetenv output-device ttya

Hope this helps.
-Brian

On Mar 31,  4:52pm, Kyle Mestery wrote:
} Subject: Sparc2 problems part II
} 
} Okay, thanks to the advice of those on the list, I checked out the memory
} in my Sparc2.  It wasn't seated properly, but now is.  A recap of the
} hardware:
} 
} Sparc2, headless with a vt100 terminal on ttya.  32MB of RAM, 1 internal
} SCSI disk, 2 external SCSI disks.  The Sparc is powered on and after 5
} seconds, I get a "WARNING: Cannot determine keyboard type" on the serial
} console.  After that, nothing.  Now, if I recall correctly, when you turn
} a Sparc2 on, shouldn't it beep right away?  This leads me to believe that
} the hardware is still not functioning correctly/installed correctly.  Does
} anyone have any other ideas?  Thanks!
} 
} --
} Kyle Mestery
} StorageTek's Network Systems Group
} "Keep honking, I'm reloading."
} "Lottery: A tax on people who are bad at math."
} 
>-- End of excerpt from Kyle Mestery