Power Failures - AT&T MERLIN Attendant for MERLIN LEGEND Installer's Manual

Testing and Troubleshooting
CAUTION:
If you must disconnect ac power to the MERLIN Attendant, make sure
setup switches 1 and 2 on the back panel are on (down). This saves
programming and recorded announcements.
Table 3-1
Number
of Blinks
1
2
3
4
5
6
7
8
9
10

Power Failures

During a power failure, the MERLIN Attendant can maintain all of its
programming information (i.e., routes, business schedule, authorization code)
up to eight weeks and all recorded announcements up to three hours if the
MERLIN Attendant battery was fully charged and switches 1 and 2 were in the
ON position at the time of the power failure.
It takes 18 hours of continuous power to charge the battery.
3-4
Troubleshooting
Out-of-Service Codes
Problem
Announcements were not recorded or
were erased (slow blink) or cannot
compute battery level (fast blink)
Unable to turn Voice Recorder off
Unable to turn Voice Recorder on
Unable to turn Voice Playback off
Unable to turn Voice Playback on
Announcement detected with no time
allocation
Attempt made to play an unrecorded
announcement
RAM constants pool corruption detected
ROM check-sum error detected
Invalid value read from Real-Time Clock