Troubleshooting - Kenwood TH-D72A Instruction Manual

TROUBLESHOOTING

The problems described in this table are commonly encountered operational
malfunctions and are usually not caused by circuit failure.
Problem
Nothing appears on
the display when the
transceiver is switched
ON, or the display is
blinking ON and OFF.
Most keys and the
Tuning control do not
function.
You cannot select the
exact desired frequency
using the Tuning
control.
Memory channels
cannot be selected
by turning the Tuning
control or by pressing
[ ]/[ ] .
The receiving sound
volume is weak even if
the signal is strong.
Turning the VOL
control does not allow
you to hear audio.
38
Probable Cause
1 The battery pack is
discharged.
2 The DC cable or
connection is bad.
3 The power supply
fuse is open (blown).
1 One of the Lock
functions is ON.
2 The transceiver is
in Channel Display
mode.
Programmable VFO
frequency range is too
narrow.
No data has been stored
in any Memory channel.
The receiving station
may be operating
in narrow band FM
bandwidth.
The selective call
function (CTCSS or
DCS) is ON.
Corrective Action
1 Recharge the battery pack
or replace the battery.
2 Replace the cable.
3 Investigate the cause for
the open fuse and replace
the fuse.
1 Unlock all of the Lock
functions.
2 With the transceiver
power OFF, press [PTT] +
[A/B] + Power ON to exit
Channel Display mode.
Expand the frequency range
in Menu No. 130 (Prog.VFO).
Store data in some Memory
channels.
Access Menu No. 131
(Modulation) to select "NFM".
Turn OFF the selective call
function.