Troubleshooting - Icom i2730A Instruction Manual

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 an-
other station.
The displayed frequency is errone-
ous.
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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