Icom IC-M504

67
10
TROUBLESHOOTING
9
10
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
No sound comes from
the speaker.
•Squelchlevelistoohigh.
•Volumelevelistoolow.
•Speakerhasbeenexposedtowater.
p. 8
p. 8
—
•Set[SQL] to the threshold point.
•Set[VOL] to a suitable level.
•Drainwaterfromthespeaker.
The transceiver does
not turn ON.
•Badconnectiontothepowersupply.
p. 58•Checktheconnectiontothetransceiver.
Transmitting is impossi-
ble, or high power can-
not be selected
.
•Somechannelsareprogrammedforlow
power or receive only in regulations.
•Theoutputpowerissettolow.
pp. 6, 7,
70
p. 8
•Changechannels.
•Push[H/L] to select high power.
Scan does not start. •TAGchannelisnotprogrammed. •SetthedesiredchannelsasTAGchannels. p. 13
No beep sounds. •BeeptonesareturnedOFF.
•Thesquelchisopen.
•TurnthebeeptoneONinSetmode.
•Set[SQL] to the threshold point.
p. 56
p. 8
Distress call cannot be
transmitted.
•MMSI (DSC self ID) code is not pro-
grammed.
•ProgramtheMMSI(DSCselfID)code. p. 15
Sensitivity is low. •TheAttenuatorisactivated. •Push[LO/DX•IC•SCRM] to turn the function
OFF.
p. 8