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New2001

TROUBLESHOOTING

PROBLEM POSSIBLE CAUSE SOLUTION REF.

The transceiver does

not turn ON.

•Badconnectiontothepowersupply. •Checktheconnectiontothetransceiverand

power supply.

p. 83

Little or no sound comes

from the speaker.

•Squelchlevelissettoohigh.

•Volumelevelissettoolow.

•Speakerhasbeenexposedtowater.

•Setthesquelchtothethresholdpoint.

•Setthevolumetoasuitablelevel.

•RemovethewaterwiththeAquaQuakefunc-

tion.

p. 15

p. 16

Transmitting is impossi-

ble, or high power can-

not be selected

•Some channels are programmed for low

power or receive only by regulations.

•Theoutputpowerissettolow.

•Changechannels.

•Push[HI/LO]toselecthighpower.

pp. 9,

10, 11

p. 11

Scan does not start. •Favoritechannelsarenotprogrammed. •Setthedesired channels asFavoritechan-

nels.

p. 18

No beep sounds. •BeeptonesareturnedOFF. •TurnthebeeptonesONintheCONFIGURA-

TION menu.

p. 78

Distress calls cannot be

transmitted.

•MMSI (DSC self ID) code is not pro-

grammed.

•ProgramtheMMSI(DSCselfID)code. p. 8

Icom IC-M423 User Manual

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