Troubleshooting - Kenwood TRC-80 Instruction Manual

TROUBLESHOOTING
The problems described in this table are commonly encountered operational malfunctions. These types of difficulties
are usually caused by improper hook-up, accidental incorrect control settings, or operator error due to incomplete
programming, and are not caused by circuit failure. Please review this table, and the appropriate section(s) of this
instruction manual, before assuming the radiotelephone is defective.
ProblemSymptom
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.
After switching ON the power,
the Display is dark.
SSB audio quality is poor.
The radiotelephoneis
automatically changing
channels.
You cannot transmit even
though you-press [PTT].
The antenna tuner will not
finish tuning successfully.
16
Probable Cause
Corrective Action
1 The DC power supply is not switched
I
1 Switch ON the DC power supply.
ON.
2 The power cable is faulty.
3 The power cable is not connected
securely.
4 A power cable fuse is open.
1 The VOLUME control is fully
counterclockwise.
2 The SQUELCH control is fully
clockwise.
3 The Microphone PTT switch is
pressed.
The input vOltageis outside 13.6 V DC
:t15%
(11.6to 15.6V DC).
The receiveris not tuned to the correct
frequency.
The Scan function is working.
1 The microphone plug is not inserted
completely in the Front Panel MIC
connector.
2 Poor antennaconnection
3 The selectedchannel is receiveonly.
4 You have selected the CW or DATA
mode instead of a voice mode.
1 Poor antenna connection
2 The antenna length is wrong.
3 If using an externaltuner, it is not
groundedcorrectly.
2 Inspect the power cable. Confirm
polarities are correct.
Red: positive (+);
Black: negative (-).
3 Confirm that the power connector is
locked against the radiotelephone
Rear Panel. Confirm the connections
to the DC power supply are secure.
4 Look for the cause of the blown fuse.
After inspecting and correcting any
problems, install a new fuse with the
same rating.
1 Turn the VOLUME control clockwise.
2 Turn the SQUELCH control
counterclockwise.
3 Releasethe Microphone PTT switch.
Correct the input voltage.
Turn the CLARIFIER control to tune the
receiverfor a clearer signal.
Press [SCAN] to stop scanning.
1 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.
2 Check the antenna system.
3
Select a channel programmed for
transmit and receive.
4
Press [MODE] to select a voice
mode.
1 Check the antenna system.
2 Use the correct antenna length.
3 Ground the tuner.
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