Instruction manual

7-6
Procedure I
If the green AC LED is “ON”, yellow TROUBLE LED is “ON”, and D39, STB OPEN LED is “ON”, an
open condition exists on the STB OUT NAC output circuit. A STB OPEN trouble condition might be
caused by:
1. Missing UL Listed 10K OHM, ½ W EOLR on the STB OUT circuit (TB2)
2. Faulty wiring causing an open on the Strobe Notification Appliance Circuit.
Perform the following:
1. Check for proper EOLR.
3. Check strobe notification appliance circuit wiring for an open condition.
Procedure J
If the green AC LED is “ON”, yellow TROUBLE LED is “ON”, and D49, (AUX IN LED) is “ON”, an
open condition exists on the CC/NAC input circuit. An AUX IN trouble condition might be caused by:
1. A Remote Microphone trouble being reported to the SP40/2 (if a remote MIC is connected).
2. Faulty wiring causing an open on the CC/NAC input circuit.
3. Jumper W5 being removed and missing UL Listed 10K Ohm, 1/2W EOLR on the CC/NAC
circuit (TB 6) (if a remote MIC is not connected).
4. If remote MIC is used, a 10K Ohm resistor is needed on AUX IN.
Perform the following:
1. Check Remote Microphone wiring for an open condition.
2. Check jumper setting if a Remote Microphone is not connected to the SP40/2.
Procedure K
If the green AC LED is “ON”, yellow TROUBLE LED is “ON”, and D54, AUDIO SHORT LED is “ON”,
a short condition exists on the AUDIO OUT NAC output circuit. An AUDIO SHORT trouble condition
might be caused by:
2. Shorted speaker appliance on AUDIO OUT.
5. Faulty wiring between AUDIO OUT and Speaker Notification Appliance Circuit causing a
short.
Perform the following:
Check wiring and Audio Notification Appliances for a short circuit condition.
Procedure L
If the green AC LED is “ON”, yellow TROUBLE LED is “ON”, and D58 AUDIO OPEN LED is “ON”,
an open condition exists on the STB OUT NAC output circuit. A STB OPEN trouble condition might
be caused by:
1. Missing UL Listed 10K OHM, ½ W EOLR on the AUDIO OUT circuit (TB6)
2. Faulty wiring causing an open on the speaker notification appliance circuit.
Perform the following:
1. Check for proper EOLR.
2. Check speaker notification appliance circuit wiring for an open condition.