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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 near-
est Icom Dealer or Service Center.
PROBLEM
POWER SUPPLY
RECEIVE
POSSIBLE CAUSE SOLUTION REF.
Power does not come
on when [PWR] key is
pushed.
No sound comes from
the speaker.
Sensitivity is low.
Receive audio is distor-
ted.
Receive signal is distor-
ted with strong signals.
DC power cable is improperly
connected.
Fuse is blown.
Battery is exhausted if you are using
a 12 V battery as the power source.
Reconnect the power cable correctly.
Check for the cause, then replace the
fuse with a spare one.
(Fuses are installed in two places. One is
installed in the DC power cable and the
other is installed in the FRONT unit.
Check the battery voltage.
p. 19
p. 139
—
pgs. 1,
25, 33
pgs. 1,
25, 35
—
p. 18
—
—
pgs.
116, 117
p. 74
p. 34
p. 79
p. 80
p. 74
Volume level is set too low.
The squelch is closed.
The transceiver is in the transmitting
condition.
An external speaker or headphones
are connected.
The antenna is not connected properly.
The antenna feed line is cut or shorted.
The antenna is not properly tuned.
The attenuator function is activated.
The operating mode is not selected
correctly.
The PBT function is activated.
Noise blanker function is activated.
Preamp is activated.
Rotate [AF] clockwise to obtain a suit-
able listening level.
Rotate [SQL] counterclockwise to
open the squelch.
Release [PTT] on the microphone or
check the SEND line of an external
unit, if connected.
Check the external speaker or head-
phone plug connection.
Reconnect to the antenna connector.
Check the feed line and correct any
improper conditions.
Push [TUNE/CALL] to manually tune
the antenna.
Push [P.AMP/ATT] to turn the
function OFF.
Select a suitable operating mode.
Push [PBT/M-ch/RIT(CLR)] for 1 sec.
to clear the PBT function.
Push
[NB/ADJ]
to turn the function
OFF.
Push [P.AMP/ATT] to turn the
function OFF.
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