TROUBLESHOOTING
7
28
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
No power comes on.
• Power cord not connected properly.
• Blown fuse.
• Check the power cord connection.
• Check the polarity of the power connection, then,
replace the fuse.
p. 23
p. 26
No sound comes from the
speaker.
• [SQUELCH] is rotated too far clockwise.
• Rotate [SQUELCH] counterclockwise to a suit-
able position.
p. 8
• [SQUELCH] is rotated too far clockwise.
• Antenna feedline or the antenna connector sol-
der has poor contact or is short circuited.
• Rotate [SQUELCH] counterclockwise to a suit-
able position.
• Check, and if necessary, replace the feedline or
solder the antenna connector again.
p. 8
p. 23
• Transmission is restricted on some channels.
• Change channels.
p. 29
Desired channel cannot be
selected.
• Different channel group is selected.
• Push and hold [
CH/WX
• U/I/C] to select the ap-
propriate channel group (U.S.A., INT or CAN).
p. 7
No display backlighting.
• Backlight function is turned OFF.
• While pushing [
HI/LO
• DIM], rotate the channel
selector to select the desired brightness.
p. 11
Scan does not start.
• No “TAG” channels are programmed.
• Set channels to be scanned as “TAG” channels.
p. 10
Receive signal cannot be un-
derstood.
• Voice scrambler has been turned OFF.
• Voice scrambler code has not been set correctly.
• Install the optional UT-79, then activate the func-
tion.
• Reset the scramble code.
p. 8
p. 20
Sensitivity is low and only
strong signals are audible.
Transmitting is impossible or
high power cannot be se-
lected.
No beeps sound even when a
switch is pushed.
• Beep function is turned OFF.
• Set beeps to ON in SET mode.
p. 20
