Firecom 3000A Installation & Operator's Manual page 16

3000A
EXTENDED TROUBLESHOOTING EXTENDED TROUBLESHOOTING
EXTENDED TROUBLESHOOTING EXTENDED TROUBLESHOOTING EXTENDED TROUBLESHOOTING
(I) (I) (I) (I) (I) The radio keys but has no transmitter audio (car- The radio keys but has no transmitter audio (car- The radio keys but has no transmitter audio (car- The radio keys but has no transmitter audio (car- The radio keys but has no transmitter audio (car-
rier but no audio). rier but no audio). rier but no audio). rier but no audio). rier but no audio).
1. Verify radio interface pin 17 (transmit audio) for
proper connection.
2. If pin 17 is properly connected, verify that the trans-
mit audio adjustment inside the intercom unit is
not set for zero output by setting it to mid-range.
3. If no fault is found and another intercom unit is
available, try swapping a known good intercom
with the suspect one. If the problem goes away,
the fault is in the suspect intercom unit. Remove
it for repair. If the problem persists, call
COM COM technical support COM COM COM
(J) (J) (J) (J) The radio doesn't key (J) The radio doesn't key The radio doesn't key The radio doesn't key. . . . . The radio doesn't key
1. Verify that the headset location is good. Replace
any faulty headset location components.
2. If the headset location checks good, verify proper
connection of radio interface pins 8 and 10.
3. If no fault is found and another intercom unit is
available, try swapping a known good intercom
with the suspect one. If the problem goes away,
the fault is in the suspect intercom unit. Remove
it for repair. If the problem persists, call
COM COM technical support COM
COM COM
(K) (K) (K) Alternator and/or strobe noise is present in trans- Alternator and/or strobe noise is present in trans- Alternator and/or strobe noise is present in trans- Alternator and/or strobe noise is present in trans-
(K) (K) Alternator and/or strobe noise is present in trans-
mit audio only mit audio only. . . . . mit audio only
mit audio only mit audio only
1. Verify that radio interface pin 1 is connected to
mic low and all connections are clean and tight.
2. Verify that the intercom transmit audio level ad-
justment is not set too high. Too much gain here
will cause excessive background noise to be
transmitted along with the voice. In the worst case,
the voice will be somewhat distorted when trans-
mitting from a quiet place and will become un-
readable in the presence of background noise.
(L) Alternator and/or strobe noise is present in all (L) Alternator and/or strobe noise is present in all
(L) Alternator and/or strobe noise is present in all (L) Alternator and/or strobe noise is present in all (L) Alternator and/or strobe noise is present in all
intercom audio. intercom audio. intercom audio. intercom audio. intercom audio.
1. Review the set up and operation of the intercom
volume and squelch controls. Possibly the inter-
com volume is set too high.
2. Inspect the headset microphones, making sure
that all the slots on both sides of the mic are clean
and unobstructed. Obstruction of these slots will
hamper the noise cancelling characteristics of the
mics.
3. Disconnect any exterior mounted headset loca-
tions. If the noise stops, inspect that location for
water or other contamination is present,
FIRECOM FIRECOM
FIRECOM FIRECOM FIRECOM for return of the unit.
FIRE- FIRE-
FIRE- FIRE- FIRE-
for assistance.
FIRE- FIRE- FIRE- FIRE- FIRE-
for assistance.
contact
(M) (M) Engine noise and sirens are present in transmit (M) (M) (M) Engine noise and sirens are present in transmit Engine noise and sirens are present in transmit Engine noise and sirens are present in transmit Engine noise and sirens are present in transmit
audio. audio. audio. audio. audio.
1. Verify that the intercom transmit audio level ad-
justment is not set too high. Too much gain here
will cause excessive background noise to be
transmitted along with the voice. In the worst case,
the voice will be somewhat distorted when trans-
mitting from a quiet place and will become un-
readable in the presence of background noise.
(N) (N) (N) (N) (N) Intercom volume control has no effect. Intercom volume control has no effect. Intercom volume control has no effect. Intercom volume control has no effect. Intercom volume control has no effect.
FIRECOM FIRECOM
1. Call FIRECOM FIRECOM technical support FIRECOM
or return authorization
(O) (O) Intercom squelch has no effect. (O) Intercom squelch has no effect. Intercom squelch has no effect. Intercom squelch has no effect.
(O) (O) Intercom squelch has no effect.
1. Call FIRECOM FIRECOM FIRECOM technical support FIRECOM FIRECOM
or return authorization
(P) (P) Cannot seem to set the squelch level (squelch Cannot seem to set the squelch level (squelch
(P) Cannot seem to set the squelch level (squelch (P) (P) Cannot seem to set the squelch level (squelch Cannot seem to set the squelch level (squelch
is too touchy). is too touchy). is too touchy). is too touchy). is too touchy).
1. First review the set up and operation of the squelch
control. Note that is important to speak in a loud
clear voice and keep the mic very close to the
speaker's mouth.
2. Call FIRECOM FIRECOM technical support FIRECOM
FIRECOM FIRECOM
or return authorization
(Q) (Q) (Q) DMR does not work (Q) (Q) DMR does not work DMR does not work DMR does not work DMR does not work
1. Review proper operation of DMR switches
2. Call FIRECOM FIRECOM FIRECOM FIRECOM FIRECOM for return authorization.
(R) (R) DMR has a noisy playback. DMR has a noisy playback.
(R) DMR has a noisy playback. (R) (R) DMR has a noisy playback. DMR has a noisy playback.
1. Call FIRECOM FIRECOM FIRECOM FIRECOM FIRECOM for return authorization.
(S) (S) DMR playback is weak. DMR playback is weak.
(S) DMR playback is weak. (S) (S) DMR playback is weak. DMR playback is weak.
1. Call FIRECOM FIRECOM FIRECOM FIRECOM FIRECOM for return authorization.
for assistance
for assistance
for assistance
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