How to find the 3583 LTO FSC1/FSC2 error code explanations

[Zoltan Forray/AC/VCU]

I am looking for a document that deciphers/explains the FSC1/FSC2 error
codes I get for the LTO2 drive in the 3583 library.

I checked all local physical docs but could only find SAC codes (as well
as media type errors).

Google searchs found nothing.