Simplex Expanded Transponder FA Digital Monitor, Class A, Trouble Isolation Procedure

2120 Multiplex Transponder Alarm Digital Monitor Class A Isolation Procedure be petionned qualifted Representa publication provides A McCulloh board procedures the expanded fire alarm digital monitor ET McCulloh feature is provided by two boards The fire alarm digital monitor board Class A 562 465 an ET daughter card The fire alarm digital monitor board Class A 562 466 feature provides Class A operation monitor points 1 through 4 on the fire alarm digital ET McCulloh troubles monitor 6 through 8 may be used as normal A single break on any one of the first four monitor point circuits will the I O board to put all four board Class A Monitor point 5 on the l O board is used to report McCulloh Class A operation of the way the ET McCulloh point by an ET This procedure is actually trouble outlined below feature works a special procedure there BMUX only knows required a McCulloh locate the Class A trouble being proceeding notify building personnel and local authorities will be working on the 2120 system department etc that RECEIVING AN ET MCCULLOH LOOP TROUBLE REPORT Determine which ET reported the McCulloh trouble via the BMUX trouble report Go to that ET and locate the fire alarm digital monitor l O board Class A that contains the troubled zone Do one of the following Find switch Sl on the I O board just located Hold Sl down for five seconds This will allow the ET at the BMUX trouble report to determine trouble report the monitor point that is actually troubled zone Locate board block TB2 Hold switch Sl down and at the same time use your VOM check each monitor point circuit for opens via the terminals on terminal block TB2 1986 Simplex Recorder Gardner Mass 01441 0001 S A Repair the open in the troubled monitor point circuit wiring Optional Hold Sl on the I O board down for five seconds no monitor point troubles are reported then have fixed the problem Press the BMUX DETECTOR RESET pushbutton The McCulloh trouble will clear and the ET Class A boards will resume normal operation 9 86