49
Troubleshooting
Description, Specifications, and Installation Manual
Checking the Battery
To check the battery:
1. Remove AC power and measure the DC voltage across the DC input connector on
the control board. If the battery has been charging for at least 24 hours, this voltage
should be above 12.75 Vdc.
2. Typically, the battery needs to be replaced every 3-5 years depending on the
application environment. The battery life is diminished if it is left in a discharged
state for prolonged periods.
3. Maintain or replace the battery as recommended by its manufacturer; obey local or
state laws governing the disposal of lead-acid batteries.
4. Check the battery terminals for corrosion. Clean and grease connectors and
terminals, if necessary.
Replacing the Battery
To replace the battery:
1. Disconnect the battery from the control board by unplugging the connector at JP36.
2. Disconnect the battery wires from the battery terminals.
3. Remove and retain the two screws that retain the battery bracket.
4. Remove the battery bracket and then remove the battery.
5. Reassemble in the reverse order of these steps.
Troubleshooting
Table 31 Troubleshooting
Problem
Action
No Radio Decode
• Unit is not programmed to recognize that particular code
sequence or signal is not being received properly.
• Verify programming is correct. Check the received audio signal
quality at the RX test pin on the front of the control
card
.
Low output from
speaker array
Check battery voltage. Also, check signal indicators on amplifiers
during a function. If indicators are off, remove amplifier for service.
Function stops
before normal
timeout
Batteries may require further charging. Check battery voltage under
load. Check charger output.
Local PA feeds back Lower PA volume using knob above MIC connector.
Local PA has little or
no output
Hold microphone close to mouth. Increase PA volume using knob
above MIC connector.
Batteries not holding
charge
Check that the battery fuse is intact and check charger output.
Load test batteries.
Relay outputs do not
operate
With a voltmeter, check that there is at least 12 Vdc across TP16
and TP18.
Radio PA takes too
long to timeout
Check radio for proper operation of squelch.
CD LED should light while carrier is present
