Trouble Shooting - Icom ic-U80 Instruction Manual

13

TROUBLE SHOOTING

If your transceiver seems to be malfunctioning, please check the following points before sending it to a service center.
PROBLEM
The transceiver does not
turn ON.
No sound comes from the
speaker.
Transmitting is impossible.
Transmitting using the VOX
function is impossible.
Contacting with another
station is impossible.
Frequency cannot be set.
A programmed scan does
not start.
A memory scan does not
start.
The displayed frequency is
erroneous.
52
POSSIBLE CAUSE
• The battery is exhausted.
• The battery polarity is reversed.
• Loose connection of a battery pack or case.
• The audio volume is too low.
• An external speaker or a cloning cable is
connected to the [SP] jack.
• The battery is exhausted.
• TX permission is inhibited.
• The VOX gain is set to OFF or too low.
• The microphone gain is too low.
• A different tone or code is used for the tone/
DTCS squelch.
• The Key Lock function is activated.
• The memory mode or Call channel mode is
selected.
• The memory mode or Call channel mode is
selected.
• The same frequency has been programmed
in the scan edge channels, "XA"–"Xb."
• The VFO mode or Call channel mode is se-
lected.
• Only one or no memory channel has been
programmed.
• The CPU has malfunctioned.
• External factors have caused a fault.
SOLUTION
• Charge the battery pack, or replace the batteries.
• Correct the reverse polarity.
• Clean battery terminals.
• Rotate [VOL] to adjust to a desired audio level.
• Check the external speaker connection or remove
the cloning cable.
• Charge the battery pack, or replace the batteries.
• Set the TX permission setting to "ON" in the Set mode.
• Set the VOX gain to a suitable level.
• Set the microphone gain to a suitable level.
• Check the tone/DTCS by performing a tone scan.
• Push [FUNC](M), then hold down [
second to cancel the Key Lock function.
• Push [VFO/MR/CALL] one or more times to select
the VFO mode.
• Push [VFO/MR/CALL] one or more times to select
the VFO mode.
• Program different frequencies- in the scan edge
channels.
• Push [VFO/MR/CALL] one or more times to select
the memory mode.
• Program two or more memory channels.
• Reset the transceiver.
• Remove and re-attach the battery pack or case.
REF.
pp. 11–14
p. 14
p. 14
p. 15
–
pp. 11–14
p. 42
pp. 42, 56
p. 42
p. 35
](# ENT) for 1 p. 18
p. 16
p. 16
p. 26
p. 16
p. 26
p. 51
p. 2