Troubleshooting - Icom IC-M804 Instruction Manual

10

TROUBLESHOOTING

The transceiver does not turn ON.
z There is a bad connection to the power supply.
→Check the connection between the transceiver and the power supply. (p. 65)
z The fuse is blown.
→Repair the problem, and then replace the fuse. (p. 70)
Little or no sound comes from the speaker.
z The squelch level is set too high.
→Set the squelch (S-meter Squelch level) to the threshold point. (p. 14)
z The volume level is set too low.
→Set the volume level to a suitable level. (p. 3)
You cannot transmit.
z Some channels are set for receive only by regulations.
→Change channels. (p. 9)
No beep sounds.
z The Key Beep function is OFF.
→Turn ON the function. (p. 56)
The Main screen is not displayed at power ON.
z The MMSI (DSC self ID) code is not set
→Set the MMSI (DSC self ID) code. (p. 8)
Individual or Group ID cannot be set.
z The entered ID code is incorrect. The first digit must be set to between '1' and '9' for an Individual ID.
→Enter a correct ID code. (p. 20)
"??" blinks instead of the position and time.
z Four hours have passed since the position data was manually entered.
→Re-enter the position and time.
z The GPS signal is not correctly received.
→Manually enter the position and time. (p. 22)
"No Position" and "No Time" are displayed instead of the position and time.
z The GPS antenna is not correctly connected.
→Make sure the GPS antenna is located where it has a clear view to receive a signal from satellites. (p. 63)
→Check the cable connection to GPS-DATA or GPS-ANT. (pp. 63, 71)
z The position and time have not been manually entered.
→Manually enter the position and time. (p. 22)
Sensitivity is too low, and only strong signals can be heard.
z The antenna is defective, or the coaxial cable connector is shorted or cut.
→Repair the problem, and then reconnect the antenna connector. (p. 62, 65)
Communication cannot be established.
z The antenna is defective, or the coaxial cable connector is shorted or cut.
→Repair the problem, and then reconnect the antenna connector. (p. 62, 65)
"The transceiver cannot receive or transmit. Contact your dealer" is displayed.
z The transceiver's Phase Lock Loop is unlocked.
→Contact your dealer.
The transceiver is locked up and does not respond.
z A software error has occurred.
→The transceiver will automatically restart after approximately 10 seconds have passed.
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