Maintenance; I Troubleshooting - Icom IC-207H Instruction Manual

15

MAINTENANCE

I Troubleshooting

PROBLEM
No power comes on.
No sound comes from the
speaker.
Sensitivity is low and only
strong signals are audible.
No contact possible with an-
other station.
Repeater cannot be ac-
cessed.
Frequency cannot be set.
Frequency cannot be set via
the microphone.
67
POSSIBLE CAUSE
• Power connector has a poor contact.
• Polarity of the power connection is reversed.
• Blown fuse.
• Volume level is too low.
• The squelch level is set too tight.
• A selective call or squelch function is activated
such as pocket beep or tone squelch.
• Antenna feedline or the antenna connector sol-
der has a poor contact or is short circuited.
• The transceiver is set to semi-duplex.
• The other station is using tone squelch.
• Wrong offset frequency is programmed.
• Wrong subaudible tone frequency is pro-
grammed.
• The frequency lock function is activated.
• Priority watch is paused on the watching fre-
quency.
• The frequency lock function is activated.
• The microphone keypad lock function is acti-
vated.
• Priority watch is paused on the watching fre-
quency.
If your transceiver seems to be malfunctioning, please check
the following points before sending it to a service center.
SOLUTION
• Check the connector pins.
• Reconnect the power cable observing the
proper polarity. Replace the fuse, if damaged.
• Check the cause, then replace the fuse.
• Rotate [VOL] clockwise.
• Set the squelch level to the threshold.
• Turn the appropriate function OFF.
• Check, and if necessary, replace the feedline or
solder the antenna connector again.
• Set to simplex.
• Turn ON the tone squelch function.
• Correct the offset frequency.
• Correct the subaudible tone frequency.
• Turn the function OFF.
• Push [ PRIO] to resume the watch.
(M/CALL)
• Push and hold LOCK
quency lock function.
• Push [FUNC], then [A16KEY LOCK] to deacti-
vate the microphone keypad lock function.
• Push [ PRIO] to resume the watch.
(M/CALL)
REF.
—
pgs.
13, 69
p. 69
p. 20
p. 20
pgs.
50, 51
p. 14
p. 24
p. 51
p. 27
p. 26
p. 16
p. 45
p. 16
to deactivate the fre-
p. 16
p. 45