Kenwood TH-77A User Manual

6-3. IN CASE OF DIFFICULTY
The problems described in this table are failures caused,
in general,
by improper operation or connection of the
transceiver, not by defective components. Examine and check according to the following table.
Symptom
Probable cause
Corrective action
Indicators do not and
receiver noise
POWER switch is turned on.
All the indicators flash.
light
no
is heard when the
1. Low voltage.
2. With optional DC cable:
1) Bad power
connections.
cable or
. Recharge/ replace the battery.
“ 4) Check cables and connections.
2)
Blown
power
supply
fuse.
2)
Check
for
the
cause
of
the
blown
fuse
and
replace
the
fuse.
No
sound
from
the
speaker.
1.
Squelch
is
closed.
1.
Turn
the
SQL
control
counter-
No signal
can
be
received.
2.
With
the TSU-7:
CTCSS
is
operat-
clockwise.
ing.
2.
Press
the
F
key,
then
the
3/M.CT
or
2/S.CT
key
to
turn off the
CTCSS.
3.
DTSS
is operating.
3.
Press
the
F key,
then
the
6/M.DT
or
5/S.DT
key to turn
off
the
DTSS.
No
control
works.
1.
LOCK
is
ON.
1.
Press
the
F
key,
then
the
Bir
bOGk
key
to
turn
off
the
2.
T.ALT
is
ON.
23
ieee
the
F
key,
then
the
4/T.ALT
3.
During
A.B.C. operation,
being |
3.
Seo section
4-2-5
:
A.B.C .
exchanging
the
bands
each other.
Memory
channel
cannot
be
|Nothing
is
stored
in
the
memory
|
See
section
4-4-5
:
Memory
Entry
recalled.
channel.
Memory cannot be backed up.
Backup battery voltage is low.
Contact the authorized dealer.
50

Kenwood TH-77A Specifications

General

Brand	Kenwood
Model	TH-77A
Category	Transceiver
Language	English