Icom IC-M604A Instruction Manual

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Contents

58TROUBLESHOOTING10PROBLEM POSSIBLE CAUSE SOLUTION REF.The transceiver doesnot turn ON.• Bad connection to the power supply. • Check the connection between the battery-and the transceiver.pp. 50,51No sound comes fromthe speaker.• Squelch level is too high.• Volume level is too low.• Speaker has been exposed to water.• Internal speaker is turned OFF.• Set [SQL] to the threshold point.• Adjust [VOL] to a suitable level.• Clear water from the speaker.• Turn the internal speaker ON in the Setmode.p. 9p. 9p. 11p. 48Sensitivity is low. • The attenuator is activated. • Push [6• LO/DX ] after pushing [O] to turnthe function OFF.p. 9Transmitting is impos-sible, or high powercannot be selected.• Some channels are programmed for onlylow power or receive by regulation.• The output power is set to low.• Change channels.• Push [H/L] to select high power.pp. 7, 8,61p. 9Scan does not start. • TAG channel is not programmed. • Set the desired channels as TAG channels. p. 15No beep sounds. • Beep tones are turned OFF.• The squelch is open.• Turn the beep tone ON in the Set mode.• Set [SQL] to the threshold point.p. 48p. 9Receive signal cannotbe understood.• Optional voice scrambler is turned OFF.• Scramble code is not set correctly.• Turn the optional voice scrambler ON.• Reset the scramble code.pp. 12,49Distress call cannot betransmitted.• MMSI (DSC self ID) code is not pro-grammed.• Program the MMSI (DSC self ID) code. p. 16