Troubleshooting - Icom IC-T7H Instruction Manual

If your transceiver seems to be malfunctioning, please check
the following points before sending it to a service center.
PROBLEM
No power comes on. • The battery is exhausted.
(A slight current flows in the circuits even when
• Poor plug connection to the external DC power
cable.
Transmitting is impossible. • The battery is exhausted.
Frequency cannot be set. • Memory mode, call channel or channel indication
mode is selected.
• The lock function is activated.
Scan does not function. • The same frequencies are programmed into XA
and XB.
• Memory channels 1 and/or 2 are not programmed
[Y] or [Z] keys do not func-
and simple mode is selected.
tion when using the optional
HM-75A.
Squelch does not open for • Tone squelch is activated.
received signals.
No beep sounds even when • Beep tones are turned OFF in initial set mode.
a key is pushed.
POSSIBLE CAUSE
the power is OFF.)

TROUBLESHOOTING

SOLUTION
• Charge the battery pack or place new dry cell bat-
teries in the battery case.
(Remove the battery pack if you will not be using
the transceiver for a long time.)
• Check the connector or remove and replace the
cable.
• Charge the battery pack or place new dry cells in
the battery case.
• Push [VFO] to select VFO mode.
• Set [LOCK] down to deactivate the lock function.
• Program different frequencies.
• Program the memory channels or set to micro-
phone normal.
• Turn OFF the tone squelch.
• Set beep tones ON in initial set mode.
6
REF.
pgs. 7,
8
—
pgs. 7,
8
p. 10
p. 12
p. 18
p. 15
p. 21
p. 24
27