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TROUBLESHOOTING
The radiotelephone will not
power up after connecting a
13.6 V DC power supply and
pressing [POWER]. Nothing
appears on the Display, and
no receiver noise is heard.
No sound comes from the
speaker; signals cannot be
received.
The DC power supply is not switched
ON.
The power cable is faulty.
The power cable is not connected
securely.
A power cable fuse is open.
The VOLUME control is fully
counterclockwise.
The SQUELCH control is fully
clockwise.
The Microphone PTT switch is
pressed.
1
3
Switch ON the DC power supply.
Inspect the power cable. Confirm
polarities are correct.
Red: positive (+); Black: negative (-).
Confirm that the power connector is
locked against the radiotelephone
Rear Panel. Confirm the connections
to the DC power supply are secure.
Look for the cause of the blown fuse.
After inspecting and correcting any
problems, install a new fuse with the
same rating.
Turn the VOLUME contro! clockwise.
Turn the SQUELCH control
counterclockwise.
Release the Microphone PTT switch.
the Display is dark.
+15% (11.6 to 15.6 V DC).
automatically changing
channels.
You cannot transmit even
though you press [PTT].
The antenna tuner will not
finish tuning successfully.
16
1 The microphone plug is not inserted
completely in the Front Panel MIC
connector.
Poor antenna connection
The selected channel is receive only.
You have selected the CW or DATA
mode instead of a voice mode.
Poor antenna connection
The antenna length is wrong.
If using an external tuner, it is not
grounded correctly.
Turn OFF the power, ensure the MIC
connector on the Front Panel has no
foreign objects in it, then plug in the
microphone connector. Secure the
connector with the locking ring.
Check the antenna system.
Select a channel programmed for
transmit and receive.
Press [MODE] to select a voice
mode.
Check the antenna system.
2 Use the correct antenna length.
Ground the tuner.
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