Maintenance; Troubleshooting; D Transceiver Power; D Transmit And Receive - Icom IC-7600 Instruction Manual

■ Troubleshooting

The followng chart s desgned to help you correct
problems whch are not equpment malfunctons.

D Transceiver power

PROBLEM
Power does not come on
when the [POWER] swtch s
pushed.

D Transmit and receive

PROBLEM
No sounds from the speaker.
Senstvty s too low, and only
strong sgnals are audble.
Receved audo s unclear or
dstorted.
The [ANT] swtch does not
functon
Transmttng s mpossble.
Output power s too low.
No contact can be made wth
another staton.
Transmt sgnal s unclear or
dstorted.
Repeater cannot be accessed. • Splt frequency functon s not actvated.
POSSIBLE CAUSE
• Power cable s mproperly connected.
• Fuse s blown.
POSSIBLE CAUSE
• Volume level s too low.
• The squelch s closed.
• The transcever s n transmt.
• The antenna s not connected properly.
• The antenna for another band s selected.
• The antenna s not properly tuned.
• The attenuator s actvated.
• Wrong operatng mode s selected.
• PBT functon s actvated.
• Nose blanker s turned ON when recevng a
strong sgnal.
• Preamp s actvated.
• The nose reducton s actvated and the [NR]
control s too far clockwse.
• The antenna swtch has not been actvated.
• The operatng frequency s not nsde a ham
band.
• The [RF POWER] control s set too far coun-
terclockwse
• The drve gan level s set too hgh.
• The [MIC GAIN] control s set too far counter-
clockwse
• The antenna for another band s selected.
• The antenna s not properly tuned.
• RIT or ∂TX functon s actvated.
• Splt frequency functon and/or dualwatch are/
s actvated.
• The [MIC GAIN] control s set too far clock-
wse.
• The speech compressor functon s actvated.
• Programmed subaudble tone frequency s
wrong.

MAINTENANCE

If you are unable to locate the cause of a problem
or solve t through the use of ths chart, contact your
nearest Icom Dealer or Servce Center.
SOLUTION
• Re-connect the DC power cable correctly.
• Check for the cause, then replace the fuse
wth the spare one.
( Fuses are nstalled n the DC power cable
and the nternal PA unt.)
SOLUTION
• Rotate the [AF] control clockwse to obtan a
sutable lstenng level.
• Rotate the [RF/SQL] control to 11 o'clock
poston to open the squelch.
• Push [TRANSMIT] to receve or check the
SEND lne of an external unt, f connected.
• Re-connect to the antenna connector.
• Select an antenna sutable for the operatng
frequency.
• Push and hold [TUNER] for 1 sec. to manually
tune the antenna.
• Push [ATT] (MF4) several tmes to select
"ATT OFF."
• Select a sutable operatng mode.
• Push and hold [PBT-CLR] for 1 sec. to reset
the functon.
• Push [NB] to turn the nose blanker OFF.
• Push [P.AMP] (MF3) once or twce to turn the
functon OFF.
• Set the [NR] control for maxmum readablty.
• Set the antenna swtch n set mode to "Auto"
or "Manual."
• Set the frequency to be n a ham band.
• Rotate the [RF POWER] control clockwse.
• Set the drve gan level to a sutable level.
• Set the [MIC GAIN] control to a sutable pos-
ton.
• Select an antenna sutable for the operatng
frequency.
• Push and hold [TUNER] for 1 sec. to manually
tune the antenna.
• Push [RIT] or [∂TX] to turn the functon OFF.
• Push [SPLIT] and/or [DUALWATCH] to turn
the functon OFF.
• Set the [MIC GAIN] control to a sutable pos-
ton.
• Push [COMP] (MF7) to turn the functon OFF.
• Push [SPLIT] to to turn the functon ON
• Reset the frequency usng set mode.
11
REF.
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