A new issue! I swapped in an 3902 board (original software) that I hadn't used in about 8 months.
First, there was no digital sound, so I thought maybe the sound card wasn't sitting right. Popped it out, then back in. Still no sound.
The next day when I powered on, I got the errors as shown in the photos. Never saw those before. I turned the attendant key, and it said it was doing the "download" — eventually I just turned it off.
One day later, it booted up and played fine, just without digitized sound.
Any ideas on what's going on?