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Troubleshooting
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Fuse replacement
If the fuse is blown or the transceiver stops functioning,
fi nd the source of the problem if possible, repair the
problem and then replace the damaged fuse with a new
rated one (FGB 20 A), as shown at right.
20 A
fuse
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
No power comes on.
• Power connector has a poor contact.
• Polarity of the power connection is re-
versed.
• Blown fuse.
• Check the connector pins.
• Re-connect the power cable observing the
proper polarity. Replace the fuse if blown.
• Check the cause, repair it, then replace the
fuse following the instruction below.
–
No sound comes from the
speaker.
• Volume is too low.
• The audio mute function is activated.
• Squelch is set too tight.
• A selective call or Squelch function is
activated such as pocket beep or tone
squelch.
• Rotate
[VOL]
clockwise.
• Push any switch or key to deactivate it.
• Set the squelch level to the threshold.
• Turn OFF the those functions.
Sensitivity is low and only
strong signals are audible.
• Antenna feedline or the antenna con-
nector solder has a poor contact or is
shorted.
• The S-meter Squelch or Squelch At-
tenuator function is activated.
• Check, and if necessary, replace the feedline
or re-solder the antenna connector.
• Set
[SQL]
to between the 10 and 12 o’clock
position.
• Turn OFF the S-meter squelch or squelch at-
tenuator.
No direct contact possible
with other stations.
• The other station is using tone squelch.
• The transceiver is set to duplex.
• Set the appropriate tone frequency or code,
and then turn ON the tone or DTCS squelch.
• Select the simplex mode.
Repeater cannot be ac-
cessed.
• Wrong frequency offset is programmed.
• Wrong subaudible tone frequency is pro-
grammed.
• Correct the frequency offset.
• Correct the subaudible tone frequency.
Frequency cannot be set.
• The frequency lock function is activated.
• Priority watch is paused on the watching
frequency.
• Turn the function OFF.
• Cancel the watch.
Frequency cannot be set
using the microphone.
• The frequency lock function is activated.
• Priority watch is paused on the watching
frequency.
• Turn the function OFF.
• Cancel the watch.
Some memory channels
cannot be selected using
the microphone keypad.
• The input channel number has not yet
been programmed.
• Rotate
[DIAL]
to check whether the channel
has been programmed or not.
–
Scan does not start.
• The squelch is open.
• Only one memory channel is programmed
or other channels are set as skip channels.
• Priority watch is activated.
• Set the squelch to the threshold point.
• Program other memory channels or cancel
the memory skip function in the desired chan-
nels.
• Cancel the watch.
Transmission is automatically
cut off.
• Time-out timer is activated.
• Turn OFF the timer.
Transmission continues even
when the PTT is released.
• One-touch PTT function is activated.
• Turn OFF the function.
The function display shows
erroneous information.
• The CPU is malfunctioning.
• Reset the CPU.
00
If your transceiver seems to be malfunctioning, please check the followings before sending it to the service center.
MAINTENANCE
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