Extended Troubleshooting - Firecom 3000A Installation & Operator's Manual

3000A

EXTENDED TROUBLESHOOTING

EXTENDED TROUBLESHOOTING
EXTENDED TROUBLESHOOTING EXTENDED TROUBLESHOOTING EXTENDED TROUBLESHOOTING
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The FIRECOM Apparatus Intercom System, when in-
stalled properly and adjusted according to specifications,
will perform to industry standards and offer you the finest
in hearing protection and enhanced communication.
However, occasionally you might experience a malfunc-
tion.
The following recommendations cover potential trouble
areas.
Find the symptom which you are experiencing and fol-
low the trouble-shoot steps in the sequence given.
If the symptoms you are experiencing are not covered in
this document, call the
Department at 1-800-527-0555.
Definitions: Definitions: Definitions: Definitions: Definitions:
Intercom unit
Radio Interface Port
Radio Interface Cable
Intercom Port
Intercom/Tx Port
HM-1
PP-2
CA Cable
Headset Location
FIRECOM Customer Service
3000A Intercom with or without
the DMR.
25 pin d sub jack on the rear of
the intercom unit.
Cable which mates with the ra-
dio interface port.
Any one of six modular jacks on
the rear of the intercom unit.
One of the three intercom ports
capable of keying and transmit-
ting over the apparatus radio
through the Radio Interface
Port.
Black plastic module with a
speaker jack and a smaller mi-
crophone jack used to connect
headsets into the intercom sys-
tem
A mic jack and a speaker jack
in a water resistant enclosure.
Flat six conductor cable with six-
wide modular plugs on each end
used to make connections be-
tween HM-1's or PP-2's and the
intercom unit
Any combination of "CA" cables
and HM-1's or PP-2's con-
nected to a single port on the
rear of the intercom unit.
How to verify that a headset location has a bad How to verify that a headset location has a bad How to verify that a headset location has a bad
How to verify that a headset location has a bad How to verify that a headset location has a bad
component and troubleshoot to either a bad component and troubleshoot to either a bad
component and troubleshoot to either a bad component and troubleshoot to either a bad component and troubleshoot to either a bad
headset, bad cable or bad HM-1 headset, bad cable or bad HM-1 headset, bad cable or bad HM-1 headset, bad cable or bad HM-1 headset, bad cable or bad HM-1
(A) Examine the headset's label to determine if the head-
set is a jumpseat type or a radio transmit type head-
set.
1. If the headset is a radio transmit type, the speak-
ers should always be active. The mic should al-
ways be active. Pressing the red PTT button on
the eardome should key the radio only if that head-
set location is plugged into an intercom/tx port,
otherwise the PTT button will have no effect.
2. If the headset is a jumpseat type headset, the
speakers should always be active. The mic should
be active only when the black PTT button on the
eardome is pressed. The headset should never
cause the radio to key once installed in any head-
set location.
(B) Unplug the headset location from the intercom unit
and exchange intercom ports with a known good
headset location. If the headset fails to perform prop-
erly, the headset location has a faulty component
and you should continue troubleshooting the head-
set location
(C) Plug the headset into another good headset loca-
tion. If the headset fails to perform properly in the
new location, the headset is faulty and needs to be
repaired.
(D) If the headset is not at fault, check the HM-1 by ex-
changing it with a known good one from another
headset location, and checking for proper operation
of the headset location. Check the modular plug of
the HM-1 for bent or stuck pins. If the pins look
good and the HM-1 fails to perform properly, it will
need to be replaced.
(E) If the HM-1 is not at fault, check the intercom port
the headset location is connected to by plugging a
known good headset location into that port. If the
new headset location operates properly, the cable
of the original headset location is bad and will need
to be replaced. It is possible that the problem with
the cable will be at the modular connector and that a
new one could be crimped on and thus solve the
problem with the headset location. A modular cable
crimping tool is required to attach new modular ends.
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