Product Manual

Using the N-560
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6. If the N-560 detects an internal problem during the self-test, an
alarm tone sounds and the N-560 displays an Error Code and the
corresponding number. See Troubleshooting on pa
ge 75.
7. Upon successful completion of the POST, the N-560 sounds a
one-second tone indicating that the N-560 has passed the test.
WARNING: If you do not hear the POST pass tone, do not use
the N-560.
WARNING: Ensure that the speaker is clear of any obstruction.
Failure to do so could result in an inaudible alarm tone.
Note: In addition to serving as the POST pass verification, the POST
pass tone also functions as an audible confirmation that the
speaker is performing properly. If the speaker does not
function, the alarm sounds cannot be heard.