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Chapter 8: Troubleshooting
Series SPB Audio Boosters Manual, Revision A
8-9
8.2.13 Procedure M (SPB-80/4 Only)
If the green AC LED is “ON,” the yellow TROUBLE LED is “ON,” and D56 STRB1 SHORT
LED is “ON,” the supervision circuit is unable to read the 1/2W EOLR: This can be caused by:
• Strobe appliance connected improperly or is shorted.
• Shorted connection on the STB1 OUT circuits.
• Circuit installed improperly.
Perform the following:
1. Check the wiring to STB1 OUT terminals and ensure proper polarity.
2. Troubleshoot the strobe circuit for incorrect wiring of an appliance or a failed
appliance.
8.2.14 Procedure N (SPB-80/4 Only)
If the green AC LED is “ON,” the yellow TROUBLE LED is “ON,” and D69 STRB1 OPEN
LED is “ON,” the supervision circuit is unable to read the 1/2W EOLR: This can be caused by:
• Missing or improper EOLR
• Open or loose wiring on the STB1 OUT terminals.
• Open STB1 OUT appliance circuit.
Perform the following:
1. Check that the 1/2W EOLR is in place is UL Listed 10k Ohm ½ EOLR.
2. Check the wiring to STB1 OUT terminals and make sure that there’s no open circuit.
3. Troubleshoot the strobe circuit for incorrect wiring.
8.2.15 Procedure O (SPB-80/4 Only)
If the green AC LED is “ON,” the yellow TROUBLE LED is “ON,” and D67 STRB2 SHORT
LED is “ON,” the supervision circuit is unable to read the 1/2W EOLR: This can be caused by:
• Strobe appliance connected improperly or is shorted.
• Shorted connection on the STB2 OUT circuits.
• Circuit connect installed improperly.
Perform the following:
1. Check the wiring to STB2 OUT terminals and ensure proper polarity.
2. Troubleshoot strobe circuit for incorrect wiring of an appliance or a failed appliance.
8.2.16 Procedure P (SPB-80/4 Only)
If the green AC LED is “ON,” the yellow TROUBLE LED is “ON,” and D56 STRB2 OPEN
LED is “ON,” the supervision circuit is unable to read the 1/2W EOLR: This can be caused by:
• Missing or improper EOLR
• Open or loose wiring on the STB1 OUT terminals.
• Open STB1 OUT appliance circuit.
Perform the following: