Troubleshooting Procedures - AT&T Door Phone Controller Installation And Operation Manual

Troubleshooting Procedures

Table 7-1. Troubleshooting Procedures
Trouble
LED "off" constantly
LED "on" constantly
LED blinking more than four
times a second
Talkback volume, but no
speaker volume
Speaker volume, but no
talkback volume
No page or talkback volume
Unit disconnects after a
certain time
Dial tone heard from the
speaker
Cannot hear your own voice
in telephone ear piece
Station mode seizes line then
disconnects before AT&T
Door Phone Controller is
accessed
Cannot access AT&T Door
Phone Controller in trunk
saver mode
Getting door-ajar callback
when door is actually closed
7-2 Troubleshooting and Maintenance
Possible Cause
Check power connection.
Brown-out condition or software
frozen.
Internal software error; may still
work.
Volume control turned down or
DIP switches incorrectly set for
mode of operation.
Volume control turned down.
Shorted or open speaker lead
connection.
Check forced disconnect
time-out selection.
DIP switches incorrect for mode
of operation. Telephone system
returns dial tone after Door
Phone goes on-hook.
DIP switch incorrect.
Plugged wires into wrong jack.
Forced disconnect timeout set
to low.
Station line plugged into J2.
J1 and J2 swapped.
Bad door ajar switch.
Open door ajar switch wiring.
Possible Solution
If power connection is good,
then return for repair.
Unplug and plug back in.
Unplug and plug back in; if
problem continues return for
repair.
Verify setting of controls and
DIP switches.
Verify setting.
Remove short or open.
Change time-out (option
selection).
Verify Mode of operation.
Program telephone system for
no dial tone on this extension.
Correct.
Correct.
Enter Option Selection Mode
(##3), and enter new Forced
Disconnect Timeout Duration.
Correct, move to J1.
Check connections and correct
if needed.
Fix or adjust.
Fix.