Technical data

Chapter 8: Troubleshooting
8.2.3 Procedure C
If the green PWR LED is “ON,” the yellow SYSTEM TROUBLE LED is “ON,” and D8, BAT
LED is “ON,” Battery Voltage is below 18.5 VDC or the battery is missing. A Battery Trouble
condition might be caused by:
• Batteries are missing.
• Battery wiring is incorrect.
• Batteries are defective.
• Battery charging section of the motherboard is inoperable.
Perform the following:
1. Check the battery compartment for the presence of batteries. If batteries are not installed,
install them.
2. Ensure that batteries are properly wired. See Figure 4-14 and 4-15 for reference.
3. With the batteries NOT connected to the SP40S measure the series voltage of the
batteries. If the battery voltage is below 18.5VDC allow the SP40S more time to charge
the batteries.
4. With the batteries NOT connected, check for 24VDC at (+, -) BAT connection at TB10
on the motherboard. If the voltage is below 18.5VDC, the battery charging section of the
motherboard is inoperable. Replace the motherboard.
5. If Steps 1 through 4 are satisfied, replace the batteries.
NOTE: The Batteries could take up to 24 hours to charge to capacity.
8.2.4 Procedure D
If the green PWR LED is “ON,” the yellow SYSTEM TROUBLE LED is “ON,” the AC
TROUBLE LED is “ON,” and the D93 CHG TRB LED is “ON” the AC is low or missing. An
AC Trouble condition might be caused by:
• AC input missing or low.
• AC fuse (F2) is blown.
• A faulty motherboard.
Perform the following:
1. Check fuse F2 on the motherboard. Replace if necessary (250V, 10A).
2. Check for 120VAC at TB9
- If voltage is not present, check the wiring and circuit breaker.
- If voltage is present AND fuse F2 is not open, replace the motherboard.
SP40S Multi-Function Facility Communication System Manual, Revision D
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