5.3
Causing An Analog Station To Self Test
You can cause analog multiline stations to self test for proper operation per the following instructions:
1. Disconnect line cord at station base.
NOTE: The adjacent odd or even station will be disabled during the time that the station line cord is being
disconnected or reconnected.
2. Press and hold MUTE and reconnect line cord to station connector. Station will automatically perform self
test routine.
3. Release MUTE as soon as test begins. Sequence of test is as follows:
•
(a.) Indicators will light in sequence
(b.) Indicators will then turn off at the same time
(c.) Ringer will sound—be sure to set station ringer volume to medium or high setting
4. Replace any station that does not pass the self test.
5.4
Causing A DSS/BLF Console To Self Test
You can cause the DSS/BLF Consoles to self test for proper operation as follows:
1. Disconnect console line cord plug from line.
2. Press and hold console button C10 while reconnecting line cord plug to line.
NOTE: The companion station will be disabled during the time that the console is being disconnected and
reconnected.
3. Release console button C10, and note that BLF indicators will each turn on in sequence beginning with
station 10 indicator. Indicators will then turn off and console will become operational.
5.5
Understanding The Failure Indications
If erratic light indications or ring signals occur at a paired station, an open data pair at either station may be the
fault. A station with an open data line may work properly on a short loop but fail on a long loop.
Stations are paired for overload current protection. If a fault occurs that causes more than 300 milliamps of
current to be drawn, the overload paired stations are disabled by circuit action. Disconnect the disabled stations
and reconnect them one at a time to isolate the faulty one.
Installing The Analog Station Board
IMI89–173
Installing The Analog Station Board – 15
