Cooper Notification SP40S Series, Installation, Testing, Operation And Maintenance Manual

Page: 73 / 81

Troubleshooting
SP40S Multi-Function Communications System 73
8.2.15 Procedure O
If the green PWR LED is "ON," the yellow SYSTEM TROUBLE LED is "ON," and D6
EXT AC WIR is "ON," an open condition exists on the SPB SUP terminals (TB4). This
trouble can be caused by:

Switch SW2 position 1 is ON despite the SPB SUP terminals not being used.

UL Listed 10k OHM ½ W EOLR not detected by the SUB SUP terminals.
Perform the following:
1. If AC is being reported separately from the Audio Booster, make sure that a 10k
Ohm ½ W EOLR is properly installed at the Audio Booster and the Audio
Booster is operating properly.
2.
If AC is NOT being reported separately, make sure there is nothing on the SPB
SUP terminals (TB4) AND Switch SW2 - position 1 (SPB SUP) is OFF.
8.2.16 Procedure P
If the green PWR LED is "ON," the yellow SYSTEM TROUBLE LED is "ON," and D5
AMP LED is blinking, an Auxiliary preamp trouble has occurred.
Perform the following:
1. Turn Aux Volume Pot (R100) fully clockwise.
2. Initiate the AUX input if it is being used (via Remote MIC).
3. Reset power to the SP40S board by turning it OFF and reenergizing it. Remove
battery power first, then remove AC power. Wait 30 seconds. Apply AC Power
first, then apply battery power.
4. Replace the motherboard.
8.2.17 Procedure Q
If the green PWR LED is "ON," the yellow SYSTEM TROUBLE LED is "ON," and D4
MIC LED is blinking, a Mic preamp trouble has occurred.
Perform the following:
1. Initiate the MIC input to verify its functionality.
2. Reset power to the SP40S board by turning it OFF and reenergizing it. Remove
battery power first, then remove AC power. Wait 30 seconds. Apply AC Power
first, then apply battery power.
3. Replace the motherboard
.