4
8
MAINTENANCE
n
Troubleshooting
The following chart is designed to help correct prob-
lems which are not equipment malfunctions.
If you are unable to locate the cause of a problem or
solve it through the use of this chart, contact the near-
est Icom Dealer or Service Center.
n
Fuse replacement
If a fuse blows or the repeater stops functioning, try to
find the source of the problem, and then replace the
damaged fuse with a new, rated fuse.
CAUTION:
DISCONNECT
the DC power cable
from the repeater. Otherwise, there is danger of
electric shock and/or equipment damage.
Fuse rating: 20 A
USE
the 20 A fuse only.
D
Line fuse replacement
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
Powe r d o e s n o t
c o m e o n w h e n
[ P O W E R ]
i s
pushed.
• DC power cable is improperly connected.
• Fuse is blown.
• Re-connect the DC power cable correctly.
• Check the cause, then replace the fuse with
a spare one.
pgs.
5, 6
p. 8
No sounds from
the speaker.
• Volume level is too low.
• The squelch is closed.
• The audio mute function is activated.
• A selective call or squelch function is acti-
vated such as 5 tone call or tone squelch.
• The front speaker is set to OFF.
• Rotate
[VOLUME]
clockwise to obtain a suit-
able listening level.
• While in base operating mode, rotate
[SE-
LECT]
to counterclockwise to open the
squelch. (When the [SQL Level Up/Down] key
function is assigned to
[SELECT]
.)
• Push
[MONI]
(if assigned) to the audio mute
function OFF
• Turn the appropriate function OFF.
• Turn the front speaker ON using the optional
CS-FR5000
cloning
software
. Ask your
dealer for details.
p. 7
p. 7
–
–
–
Sensitivity is low
and only strong
signals are audible.
• Antenna feedline or the antenna connector
has a poor contact or is short-circuited.
• Check and re-connect (or replace if neces-
sary), the antenna feedline or antenna con-
nector.
p. 5
Received signal
cannot be under-
stood.
• Optional voice scrambler is turned OFF.
• Scrambler code is not set correctly.
• Turn the optional voice scrambler ON.
• Reset the scrambler code.
–
–
Output power is
too low.
• Output power is set to Low.
• Power amplifier protection circuit is activated.
• Push
[HIGH/LOW]
(if assigned) to select the
High power.
• Cool down the repeater or stop accessing to
the repeater until it has cooled down.
–
–
No contact pos-
sible with another
station.
• The other station is using tone squelch.
• While in base operating mode, the repeater
is set to duplex.
• Turn the tone squelch function ON.
• Set the repeater to simplex, when other trans-
ceiver is set to simplex.
–
–
