A D V A N C E D T R O U B L E S H O O T I N G
31.
This section is designed for use by a QUALIFIED RADIO TECHNICIAN only!!!
This section is designed to aid in the troubleshooting process of an intercom system that has
been working properly, but has now failed. Make sure you read and understand
THE
ENTIRE
procedure
BEFORE
attempting any of the troubleshooting steps in this section.
If there are questions regarding this information, contact your local Firecom Dealer for
more information
BEFORE
proceeding with the troubleshooting steps.
The System Test on page 20 is also a helpful tool in isolating and determining the actual
symptoms of the problem.
A) THERE IS NO SOUND IN THE HEADSET FROM EITHER THE
INTERCOM OR THE RADIO
1.
Check the headset Volume Control. Make sure it is not turned all the way down.
2.
Check the headset location for faulty connections or components. See
“Troubleshooting a Headset Location” (page 30).
3.
Verify that some of the Volume Indicator LEDs on the front panel of the intercom
unit are lit, indicating that the intercom is powered on.
4.
Measure the voltage between pins 1 & 2 on the Power Cable. There should be at
least 12 volts DC present, and not more than 36 volts DC.
5.
Check the wiring to the intercom and any fuses or circuit breakers in the power
circuits to the intercom and correct any faults.
6.
If there is sufficient power to the intercom, and it doesn’t work, the Intercom Unit
is faulty. Contact Firecom Service for a Return Material Authorization (RMA)
Number to return the Intercom Unit for repair
.
B) THERE IS SOUND IN THE HEADSET FROM THE INTERCOM, BUT NOT
FROM THE RADIO
(Perform one or more of the following as needed.)
1.
Check the radio volume. Make sure it is not turned all the way down.
3.
Adjust the Receive Audio adjustment. See “Intercom Adjustments” (page 16).
5.
Verify that Receive Audio is present by listening to the radio’s speaker.
2.
If there is no audio from the radio’s speaker:
c.
Disconnect the Radio Interface Cable from the back of the intercom unit. If
there is audio from the radio’s speaker, the Intercom Unit is faulty. Contact
Firecom Service for a Return Material Authorization (RMA) Number to
return the Intercom Unit for repair.
a.
Disconnect the Radio Interface Cable from the radio. If there is audio from
the radios’s speaker, the Radio Interface Cable is faulty.
b.
If there is still no audio from the radio’ s speaker, the radio is faulty.
4.
If there is audio from the radio’s speaker, check the connections to pins 6 & 7 on
the Radio Interface Port on the back of the intercom unit.
IMPORTANT
