Icom IC-706 Instruction Manual page 50

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The following chart is designed to help you correct
problems which are not equipment malfunctions.
Power does not come
No sound comes from
Sensitivity is low.
Receive audio is distort-
Receive signal is distort-
ed with strong signals.
TROUBLESHOOTING
eDC power cable is
connected,
improperly
e Fuse is blown.
e Battery is-exhausted if you are using
a 12 V battery as the power source.
e Volume-.level is set too low.
e The squelch is closed.
e The transceiver is in the transmitting
condition.
e An external speaker or headphones
are connected.
e The antenna is not connected properly.
e The antenna feed line is cut or shorted.
e The antenna for another band is
selected.
* The antenna is not properly tuned.
e The attenuator function is activated.
e The operating mode is not selected
correctly.
e The [SHIFT] control is set off-center.
e Noise blanker function is activated.
e Preamp is activated.
e Reconnect the power cable correctly.
e 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 PA unit.
e Check the battery voltage with the
[POWER] pushed IN.
e Rotate [AF] clockwise to obtain a suit-
able listening level.
e Hotate [SQL] counterclockwise to
open the squelch.
e 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.
e Check the speaker ON/OFF switch or
speaker A/B switch, when an optional
SP-20 EXTERNAL SPEAKER is in use.
e Reconnect to the antenna connector.
* Check the feed line and correct any
improper conditions.
e Select an antenna suitable for the
operating frequency.
Make sure that [ANT1] is used for
frequencies less than 60 MHz and
[ANT2] is used for frequencies of 60
MHz and above.
e Push [TUNE] to manually tune the
antenna.
e Push [ATT] to turn the function OFF.
e Select a suitable operating mode.
e Set [SHIFT] to the center position.
e Push [HE] to turn the function OFF.
ePush [P.AMP] to turn the function | p. 20
OFF.