Yep, audit mode. Check those batteries ASAP! That's your most likely cause, just old batteries. As long as there's no corrosion, just swap in some fresh ones and off you go. Look into a remote battery pack, or some lithium AA's (they don't leak). If that's not it, the next things to check are the 5101 RAM chip and blocking diode..... but my money is that it's just the batteries if it's just started doing this.
If you use regular alkaline batteries, change them annually. Lithiums you can wait till they die as they don't leak at all.
Not likely to find SCANBE socket in a System 7 board though, they're pretty much all switched over to the RN brand by then.
-Hans