ICOM 370500 Manuale Utente

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The following chart is designed to help you correct 
problems 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 your 
nearest Icom Dealer or Service Center.

Power does not come 
on when  

[POWER] is 

pushed.

• DC power cable is improperly connected.

• Fuse is blown.

• Re-connect the DC power cable correctly.

•  Check for the cause, then replace the fuse 

with a spare one. 

pp. 
5, 6
p. 8

No sound comes 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 

LECT]  to  counterclockwise  to  open  the 
squelch. (When the [SQL Level Up/Down] key 
function is assigned to 

[SELECT].)

•  Push 

[MONI] (if assigned) to turn 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

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Sensitivity is low and 
only  strong  signals 
are audible.

•  Antenna feedline or the antenna connec-

tor 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 audio is un-
clear or distorted.

• Optional voice scrambler is turned OFF.
• Scrambler code is not set correctly.

• Turn the optional voice scrambler ON.
• Reset the scrambler code.

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Output  power  is  too 
low.

• Output power is set to Low.

•  Power amplifier protection circuit is acti-

vated.

•  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.

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No  contact  possible 
with another station.

• The other station is using tone squelch.
•  While  in  base  operating  mode,  the  re-

peater is set to duplex.

• Turn the tone squelch function ON.
•  Set the repeater to simplex, when other trans-

ceiver is set to simplex.

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