Kenwood TH-D7A

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
TROUBLESHOOTING
The problems described in this table are commonly encountered operational malfunctions and are usually not caused
by circuit failure.
Problem Probable Cause Corrective Action Ref. Page
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 [UP]/ [DWN]
or Tuning control.
You cannot recall any
memory channels.
1 Low supply voltage 1 Recharge the battery pack or replace
the batteries.
2 If using the optional DC cable: 2
a)
b)
Bad power cable or connections
Open (blown) power supply fuse
1 Transceiver Lock is ON (Key icon is
visible).
2 The transceiver is in Channel
Display mode.
3 Tone Alert is ON (Bell icon is
visible).
4 Packet data was being transmitted
using the data band.
The current frequency step size does
not allow the frequency to be selected.
You have stored no data in any of the
memory channels using the current
band.
a) Check the power cable and
connections, then correct/replace
as necessary.
b) Investigate the cause for the
open fuse. Replace the fuse.
1 Press [F] (1 s) to switch OFF
Transceiver Lock.
2 Press [A/B]+ POWER ON to exit
Channel Display mode.
3 Press [F], [ENT] to switch OFF Tone
Alert.
4 Operate the keys or the Tuning
control after transmitting of packet
data is completed.
Select the appropriate frequency step
size.
Store the desired frequencies in
memory channels using the current
band.
2, 4
5
—
50
31
47
—
46
27
90