Alesis ADAT-XT20 Reference Manual page 125

Appendix C: Error Codes
6
ADAT system, see if you can visit your dealer.) It does not make sense to send
your XT20 in for service when there may be only a problem with, for example,
some tapes that you are using. If the same problems occur in another XT20 or
ADAT, then either the tape is faulty or it was formatted on an out of alignment
XT20 or ADAT. At this point, you should call Alesis Product Support. If the
problem does not occur, and the tape works fine, then we need to look at your
XT20. Call Alesis Product Support.
Whatever happens, the answers to all these questions are useful information
for our Product Support representatives. The more we know, the faster we can
discover the cause of your problems. You will help us isolate whether the
problem lies in the XT, the tape or somewhere else.
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Try the tape in a different XT20 or ADAT. (If you are using a single
ADAT-XT20 Reference Manual