Operation Manual

14-5
MAINTENANCE
14
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.
Power does not come
on when
POWER
is
pushed.
Power cable is improperly
connected.
Reconnect the DC power cable
correctly.
p. 2-4
The external power supply is turned
OFF.
Turn ON the external power supply. p. 2-4
The DC power cable fuses or
circuitry fuse are blown.
Find and repair the cause of the
problem and then replace the
damaged fuse with a new one.
p. 14-2
No sound is heard from
the speaker.
Audio level is too low.
Rotate
AF RF/SQL
(inner) clockwise
to obtain a suitable listening level.
p. 3-2
The squlech is closed.
Rotate
AF RF/SQL
(outer) to the 12
o’clock position to open the squelch.
p. 3-10
The tone squelch is ON in the FM
mode.
Turn OFF the Tone squlech. p. 4-30
An external speaker or headphones
are connected to [PHONES] jack.
Disconnect the head-phone or
external speaker.
p. 2-2
The external speaker cable is cut. Check the external speaker cable
and repair it.
–
Sensitivity is too low,
and only strong signals
can be heard.
The attenuator is activated. Turn OFF the attenuator in the
FUNCTION screen.
p. 4-3
The squlech is closed.
Rotate
AF RF/SQL
(outer) to 12
o’clock position to open the squelch.
p. 3-10
The antenna is defective or the
coaxial cable connector is shorted
or cut.
Repair the problem and then
reconnect to the antenna connector.
p. 2-3
You are using an antenna not
suitable for the band you have
selected.
Connect an antenna suitable for the
operating frequency.
p. 2-3
Hold down
TUNER
to tune the
antenna.
p. 11-2
No power output or the
output power is too low.
The operating frequency is outside a
ham band.
Set the frequency to a ham band. p. 3-4
The modulation input signal level is
set too low.
Adjust the microphone gain in the
Multi-function menu.
p. 3-11
The microphone is bad, or the [MIC]
connector is shorted.
Try to transmit in the FM, CW, or
RTTY mode to check whether the
microphone or the transceiver has a
problem.
p. 3-3
The antenna SWR is more than 3:1. Adjust the antenna for an SWR of
less than 3:1.
p. 11-2
The antenna is not properly tuned.
Hold down
TUNER
for 1 second to
tune the antenna.
p. 11-2
TX power is set too low. Adjust the RF POWER in the Multi-
function menu.
p. 3-11