37
11
MAINTENANCE
10
11
■
Troubleshooting
If your transceiver seems to be malfunctioning, please check the following points before sending it to a service center.
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
The transceiver’s power
will not turn ON.
No sound is heard from
the speaker.
Sensitivity is low and only
strong signals can be heard.
No contact possible with
another station.
Cannot change the oper-
ating channel.
Scan does not start.
• Power connector has poor contact.
• Polarity of the power connection is reversed.
• Blown fuse.
• Volume is too low.
• The volume level is set to 0 (audio muting).
• Squelch is set too high.
• A selective call or squelch function is activated
such as pocket beep or tone squelch.
• Antenna feedline or the antenna connector has
poor contact or is shorted.
• The other station is using tone squelch.
• The lock function is activated.
• Priority scan is paused on the watching
frequency.
• The squelch is open.
• Priority scan is activated.
• Check the connector pins.
• Reconnect the power cable observing the proper
polarity.
• Repair the cause, then replace the fuse.
• Push
.
• Push
.
• Set the squelch level to the threshold.
• Turn OFF the appropriate function.
• Check, and if necessary, replace the feedline or
solder the antenna connector again.
• Turn ON the Tone Squelch function.
• Hold down
for 2 seconds to turn OFF the Lock
function.
• Push
to cancel the scan.
• Set the squelch to the threshold point.
• Cancel the scan.
—
p. 4
p. 38
p. 10
p. 10
p. 14
pp.
26–27
p. 5
p. 26
p. 14
p. 24
p. 14
p. 24
Summary of Contents for IC-450
Page 1: ...INSTRUCTION MANUAL i450 UHF TRANSCEIVER ...
Page 46: ......
Page 49: ...MEMO ...
Page 50: ...MEMO ...
Page 51: ...MEMO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...
Page 52: ...46 MEMO ...
