Icom IC-2730E Instruction Manual page 88

13
MAINTENANCE
■ Troubleshooting
The following chart is designed to help you correct problems
which are not equipment malfunctions.
PROBLEM
Power does not turn ON when
[PWR] is pushed.
No sound from the speaker.
Sensitivity is too low, and only
strong signals can be heard.
No contact can be made with
another station.
The displayed frequency is
erroneous.
83
POSSIBLE CAUSE
• The power cable is improperly connected.
• A fuse is blown.
• Power source voltage is not correct.
• The audio volume level is too low.
• The squelch is closed.
• The Tone squelch is ON in the FM mode.
• The external speaker is not connected.
• The audio is muted.
• The antenna is defective or the coaxial cable
connector is shorted or cut.
• The Attenuator function is turned ON.
• The squelch is set too tight.
• Duplex function are ON, and the transmit and
receive frequencies are different.
• The CPU has malfunctioned.
• External factors have caused the fault.
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.
SOLUTION
• Reconnect the DC power cable correctly.
• Correct the cause, then replace the fuse with
an equivalent fuse. (Fuses are installed in the
DC power cable and in the internal PA unit.)
• Apply the correct 13.8 V DC.
• Rotate [VOL]S clockwise to obtain a suitable
listening level.
• Rotate [SQL]S to 12 o'clock position to open
the squelch.
• Turn OFF the Tone squelch.
• Correct the cause, then reconnect.
• Push [ ]( ) (or any other key) to release mute.
• Reconnect to the antenna connector.
• Turn OFF the Attenuator function.
• Rotate [SQL]S to adjust the squelch level.
• Turn OFF the Duplex function.
• Enter the correct RX and TX frequencies.
• Reset the transceiver.
• Disconnect and connect to the DC power
source.
REF.
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p. 25
p. 25
p. 56
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p. 27
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p. 14
p. 25
p. 50
p. 24
p. 81
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