DM 3200 Digital I/O

[HiFiDavid]

So I've been using the DM3200 fine for years now with the RCA DIN digital input into the Digital Channel 1 of the DM3200. Just got a new Sony recorder with digital I/O so I thought to plug it into the DM Digital Channel 2. Should work fine right? Well the digital setup only show Channel Two as XLR (AES I suppose) It should read the RCA DIN and adjust to that, but no. Docs say this is an auto setting. So can this be set manually? or am I experiencing a busted Digital Channel 2: Channel 1 works fine w/ the Sony so I know that part works

Thanks in advance...