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

■ Troubleshooting

The following chart is designed to help you correct
problems which are not equipment malfunctions.

D Transceiver power

PROBLEM
Power does not come on
when the [POWER] switch is
pushed.

D Transmit and receive

PROBLEM
No sounds from the speaker.
Sensitivity is too low, and only
strong signals are audible.
Received audio is unclear or
distorted.
The [ANT] switch does not
function
Transmitting is impossible.
Output power is too low.
No contact can be made with
another station.
Transmit signal is unclear or
distorted.
Repeater cannot be accessed. • Split frequency function is not activated.
POSSIBLE CAUSE
• Power cable is improperly connected.
• Fuse is blown.
POSSIBLE CAUSE
• Volume level is too low.
• The squelch is closed.
• The transceiver is in transmit.
• The antenna is not connected properly.
• The antenna for another band is selected.
• The antenna is not properly tuned.
• The attenuator is activated.
• Wrong operating mode is selected.
• PBT function is activated.
• Noise blanker is turned ON when receiving a
strong signal.
• Preamp is activated.
• The noise reduction is activated and the [NR]
control is too far clockwise.
• The antenna switch has not been activated.
• The operating frequency is not inside a ham
band.
• The [RF POWER] control is set too far
counterclockwise
• The drive gain level is set too high.
• The [MIC GAIN] control is set too far
counterclockwise
• The antenna for another band is selected.
• The antenna is not properly tuned.
• RIT or ∂TX function is activated.
• Split frequency function and/or dualwatch are/
is activated.
• The [MIC GAIN] control is set too far
clockwise.
• The speech compressor function is activated.
• Programmed subaudible tone frequency is
wrong.

MAINTENANCE

If you are unable to locate the cause of a problem
or solve it through the use of this chart, contact your
nearest Icom Dealer or Service Center.
SOLUTION
• Re-connect the DC power cable correctly.
• Check for the cause, then replace the fuse
with the spare one.
( Fuses are installed in the DC power cable
and the internal PA unit.)
SOLUTION
• Rotate the [AF] control clockwise to obtain a
suitable listening level.
• Rotate the [RF/SQL] control to 11 o'clock
position to open the squelch.
• Push [TRANSMIT] to receive or check the
SEND line of an external unit, if connected.
• Re-connect to the antenna connector.
• Select an antenna suitable for the operating
frequency.
• Hold down [TUNER] for 1 second to manually
tune the antenna.
• Push [ATT] (MF4) several times to select "ATT
OFF."
• Select a suitable operating mode.
• Hold down [PBT-CLR] for 1 second to reset
the function.
• Push [NB] to turn the noise blanker OFF.
• Push [P.AMP] (MF3) once or twice to turn the
function OFF.
• Set the [NR] control for maximum readability.
• Set the antenna switch in the set mode to
"Auto" or "Manual."
• Set the frequency to be in a ham band.
• Rotate the [RF POWER] control clockwise.
• Set the drive gain level to a suitable level.
• Set the [MIC GAIN] control to a suitable
position.
• Select an antenna suitable for the operating
frequency.
• Hold down [TUNER] for 1 second to manually
tune the antenna.
• Push [RIT] or [∂TX] to turn the function OFF.
• Push [SPLIT] and/or [DUALWATCH] to turn
the function OFF.
• Set the [MIC GAIN] control to a suitable
position.
• Push [COMP] (MF7) to turn the function OFF.
• Push [SPLIT] to to turn the function ON
• Reset the frequency using the set mode.
11
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