Icom IC-M504A [73/80] Troubleshooting

Icom IC-M504A [73/80] Troubleshooting
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10
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
No sound comes from
the speaker.
s3QUELCHLEVELISSETTOOHIGH
s6OLUMELEVELISSETTOOLOW
s3PEAKERHASBEENEXPOSEDTOWATER
p. 8
p. 8
s3ET[SQL] to the threshold point.
s3ET[VOL] to a suitable level.
s$RAINWATERFROMTHESPEAKER
The transceiver does
not turn ON.
s"ADCONNECTIONTOTHEPOWERSUPPLY
p. 56s#HECKTHECONNECTIONTOTHETRANSCEIVER
Transmitting is impossi-
ble, or high power can-
not be selected
.
s3OMECHANNELSAREPROGRAMMEDFORLOW
power or receive only by regulations.
s4HEOUTPUTPOWERISSETTOLOW
pp. 6, 7,
70
p. 8
s#HANGECHANNELS
s0USH[H/L] to select high power.
Scan does not start. s4!'CHANNELISNOTPROGRAMMED s3ETTHEDESIREDCHANNELSAS4!'CHANNELS p. 13
No beep sounds. s"EEPTONESARETURNED/&& s4URNTHEBEEPTONE/.IN3ETMODE p. 54
Distress call cannot be
transmitted.
s--3)$3#SELF)$CODEISNOTPRO-
grammed.
s0ROGRAMTHE--3)$3#SELF)$CODE p. 15
Sensitivity is low. s4HE!TTENUATORISACTIVATED s0USH;,/$8s)#s3#2-= to turn the function
OFF.
p. 8
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