Overland Data OD3210 error codes?

Many thanks to _Bernhard Wulf_, who found Overland OD32XX tape drive info and software at this extremely helpful link: http://www.pestingers.net/antique_computer_Gallery.htm From the User Manual, my unit appears to have a Critical Error (alert flashing 4x per second). This error translates into error 60, "Bad NOVROM magic" -- whatever that means (see page 41 of manual). This error if I understand it correctly makes sense, as I removed the button cell battery off the main PCB to replace it. Anything backed up by that battery would've been lost, so seemingly, the NOVROM contents were lost. Very sadly, the recommended service procedure for this fault code is "RC 1" -- Call a Service Tech to replace Main PWB. Insane that a battery replacement would render a perfectly good PWB useless. - John S.