Icom IC-M604 - 10 Troubleshooting

54
TROUBLESHOOTING
10
PROBLEM POSSIBLE CAUSE SOLUTION REF.
The transceiver does
not turn ON.
• Bad connection to the power supply. • Check the connection to the transceiver. pp. 46,
47
No sound comes from
the 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.
• Set
[VOL] to a suitable level.
• Drain water from the speaker.
• Turn the internal speaker ON in set mode.
p. 9
p. 9
p. 11
p. 44
Sensitivity is low. • The attenuator is activated. • Push
[6•
LO/DX
] after pushing [F] to turn
the function OFF.
p. 9
Transmitting is impos
-
sible, or high power
cannot be selected.
• Some channels are programmed for low
power or receive only in regulations.
• The output power is set to low.
• Change channels.
• Push
[H/L] to select high power.
pp. 7, 8,
57
p. 9
Scan does not start. • TAG channel is not programmed. • Set the desired channels as TAG channels. p. 15
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. 44
p. 9
Receive signal cannot
be 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,
45
Distress call cannot be
transmitted.
• MMSI (DSC self ID) code is not pro
-
grammed.
• Program the MMSI (DSC self ID) code.
p. 16