Icom ID-4100A

55
9
MAINTENANCE
New2001 New2001
BASIC MANUAL
■ 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.
Transceiver does not
turn ON.
• The power cable is improperly connected.
• A fuse is blown.
• Power source voltage is not correct.
• 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.)
• Apply the correct 13.8 V DC.
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p. 54
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No sound comes from
the speaker.
• The audio volume level is too low.
• The squelch is tightly closed.
• The tone squelch is ON in the FM mode.
• The external speaker is not connected.
• The audio is muted.
• Rotate [VOL] clockwise to obtain a suitable
listening level.
• Rotate [SQL] to the proper level to open the
squelch.
• Turn OFF the Tone squelch.
• Reconnect the external speaker.
• Hold down [MUTE] to release mute.
p. 19
p. 19
p. 20
p. 15
p. 10
Sensitivity is too low,
and only strong signals
are audible.
• 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.
• Correct the cause, then reconnect to the
antenna connector.
• Turn OFF the attenuator.
• Rotate [SQL] to adjust the squelch level.
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p. 35
p. 19