Troubleshooting - Icom IC-M502 Instruction Manual

10

TROUBLESHOOTING

PROBLEM
No power comes ON.
No sound comes from
the speaker.
Sensitivity is low.
Transmitting is impossi-
ble, or high power can-
not be selected.
Scan does not start.
No beep sounds.
Receive signal cannot
be understood.
Distress call cannot be
transmitted.
40
POSSIBLE CAUSE
• Bad connection to the power supply.
• Squelch level is too deep.
• Volume level is too low.
• Speaker has been exposed to water.
• Internal speaker is turned OFF.
• The attenuator is activated.
• Some channels are for low power or re-
ceive only.
• The output power is set to low.
• "TAG" channel is not programmed.
• Beep tone is 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 squelch to the threshold point.
• Set [VOL] to a suitable level.
• Drain water from the speaker.
• Turn the internal speaker ON in set mode.
• Push [LO/DX] to turn the function OFF.
• Change channels.
• Push [HI/LO] to select high power.
• Set the desired channels as "TAG" chan-
nels.
• Turn the beep tone ON in set mode.
• Set squelch to the threshold point.
• Turn the optional voice scrambler ON.
• Reset the scramble code.
• Program the MMSI (DSC self ID) code.
REF.
p. 35
p. 8
p. 8
—
p. 32
p. 8
pgs.
6, 41
p. 8
p. 13
p. 32
p. 8
p. 10
p. 33
p. 14