7
TROUBLESHOOTING
22
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
POWER
Power does not come on
when [POWER] is
pushed.
• Power cable is improperly connected.
• Blown fuse.
• Reconnect the cable securely.
• Check for cause, then replace the fuse
with a spare one.
p. 18
p. 21
RECEIVE
No sound comes from the
speaker.
• The [SPEAKER] switch is turned on.
• Microphone is not connected.
• The squelch is closed.
• Turn off the [SPEAKER] switch.
• Connect the microphone to the
[MICROPHONE] connector.
• Push the [SQL] switch to turn the
squelch off.
p. 2
p. 2
p. 9
Sensitivity is too low and
only strong signals are
audible.
• Antenna is not properly matched to the
operating frequency.
• Wrong tuner condition is selected in set
mode.
• Push [TUNE] to tune the connected
antenna tuner or select “automatic
tuning” using set mode when an
optional AT-130 is connected.
• Set the proper condition for the
connected tuner.
pgs.
2, 11
p. 11
Received audio is unclear
or distorted.
• Wrong type of emission is selected.
• AGC is deactivated while receiving a
strong signal.
• Noise blanker is turned on when
receiving a strong signal.
• The [CLARITY] control is rotated too
far clockwise or counterclockwise.
• Push [MODE] to select the proper
operating mode.
• Push [AGC] to activate the AGC
function.
• Push [NB] to turn the noise blanker off.
• Adjust the [CLARITY] control to receive
proper audio output.
p. 3
p. 9
p. 9
p. 9
TRANSMIT
Your signal does not
reach as far away as
usual.
• Antenna tuner is improperly matched to
the operating frequency when manual
tuning is selected.
• CW or FSK mode is selected for voice
transmission.
• Push [TUNE] to tune the connected
antenna tuner or select “automatic
tuning” using set mode.
• Push [MODE] to select USB mode (or
AM, R3E, etc.).
pgs.
2, 11
p. 3
Transmit signal is unclear
or distorted.
• Wrong type of emission is selected.
• Microphone is too close to your mouth.
• Push [MODE] to select the proper
operating mode.
• Speak into the microphone naturally
and do not hold the microphone too
close to your mouth.
p. 3
—
DISPLAY
All indicators appear and
the channel number
cannot be read.
• The highest contrast is selected in set
mode.
• Set to the proper display contrast.
p. 13
What appears to be equipment malfunction may not be
damaging or difficult to solve. Check the following chart
before making any adjustments or sending the trans-
ceiver to an Icom Service Center.