Troubleshooting - Icom IC-M604 Instruction Manual

10

TROUBLESHOOTING

PROBLEM
The transceiver does
not turn ON.
No sound from speaker. • Squelch level is too high.
Sensitivity is low.
Transmitting is impossi-
ble, or high power can
not be selected.
Scan does not start.
No beeps.
Receive signal cannot
be understood.
Distress call cannot be
transmitted.
54
POSSIBLE CAUSE
• Bad connection to the power supply.
• Volume level is too low.
• Speaker has been exposed to water.
• Internal speaker is turned OFF.
• The Attenuator is activated.
• Some channels are programmed for low
power or receive only in regulations.
• The output power is set to low.
• TAG channel is not programmed.
• Beep tones are turned OFF.
• The squelch is open.
• Optional voice scrambler is turned OFF.
• Scramble code is not set correctly.
• MMSI (DSC self ID) code is not pro-
grammed.
SOLUTION
• Check the connection to the transceiver.
• 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.
• Push [6• ] after pushing [F] to turn
LO/DX
the function OFF.
• Change channels.
• Push [H/L] to select high power.
• Set the desired channels as TAG channels.
• Turn the beep tone ON in Set mode.
• Set [SQL] to the threshold point.
• Turn the optional voice scrambler ON.
• Reset the scramble code.
• Program the MMSI (DSC self ID) code.
REF.
pgs. 46,
47
p. 9
p. 9
p. 11
p. 44
p. 9
pgs. 7,
8, 57
p. 9
p. 15
p. 44
p. 9
pgs. 12,
45
p. 16