Primera Technology DP-XRn Benutzerhandbuch

If a job calls for media that has not been designated in the
admin utility, the user will be prompted of this fact but will be
allowed to send the job anyway. The XRn will then pick from
the default bin as specified in this window.  Below are a few
scenarios that may provide some clarification:

The left bin is designated as DVD and the right

bin is designated as CD.  The user submits a job that requires 
a DVD.  A DVD is picked from the left bin and the job 
completes.

The left bin is designated as DVD and the right

bin is designated as CD. The user submits a job that requires a
DVD-DL.  The user is prompted that the media is not currently
in the XRn.  At this point a user can change their media type or
ignore the message.  If they ignore the XRn will pick from the
left bin or whatever bin has been designated as the default.  In
this scenario it is expected that a user will load the appropriate
media before submitting the job. Failure to load the correct
media will cause disc rejection and failed job.

Bin Selection has been disabled. The user 

submits a job that requires a DVD.  No prompt is displayed.
The XRn automatically picks from the right bin.  In this 
scenario it is expected that a user will load the appropriate
media before submitting the job.