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12
85
TROUBLESHOOTING
The following chart is designed to help you correct
problems which are not equipment malfunctions.
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.
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
PO
WER SUPPL
Y
Power does not come
o n w h e n [ P W R ] i s
pushed.
• DC power cable is improperly connected. • Reconnect the power cable correctly.
p. 15
• Fuse is blown.
• Check for the cause, then replace the
fuse with a spare one.
(Fuse is installed in the DC power cable)
p. 83
• Battery is exhausted if you are using a
12 V battery as the power source.
• Check the battery voltage.
—
RECEIVE
No sound comes from
the speaker.
• Volume level is set too low.
• Rotate
[AF]
clockwise to obtain a suit-
able listening level.
p. 29
• The squelch level is closed.
• Rotate
[RF/SQL]
to 12 o’clock position
to open the squelch.
p. 30
• The transceiver is in the transmit mode. • Release
[PTT]
on the microphone or
check the SEND line of an external unit,
if connected.
—
• An external speaker or headphones are
connected.
• Check the external speaker or head-
phone plug connection.
p. 14
Sensitivity is too low,
and only strong signals
are audible.
• The antenna is not connected properly. • Reconnect to the antenna connector.
—
• The antenna feed line is cut or shorted. • Check the feed line and correct any im-
proper conditions.
—
• The antenna is not properly tuned.
• Push
TUNER
to manually tune the an-
tenna.
p. 67
• The attenuator function is activated.
• Push
P.AMP
ATT
to turn the function OFF.
p. 45
• The antenna for another band is se-
lected.
• Select an antenna suitable for the oper-
ating frequency.
p. 67
Receive audio is dis-
torted.
• The operating mode is not selected cor-
rectly.
• Select a suitable operating mode.
p. 29
Receive signal is dis-
torted by strong sig-
nals.
• The noise reduction is activated and the
noise reduction level is too high.
• Set the noise reduction level for maxi-
mum readability.
p. 50
• Noise blanker function is activated.
• Push
NB
to turn the function OFF.
p. 49
• Preamp is activated.
• Push
P.AMP
ATT
to turn the function OFF.
p. 45
The shift frequency of
the RIT function cannot
be added/subtracted.
• The XFC (transmit frequency check
function) is turned ON.
• Turn the XFC (transmit frequency check
function) OFF in set mode.
p. 76