12 MAINTENANCE & TROUBLESHOOTING

12.6 Simple Troubleshooting

The table below provides common problems and the means with which to restore normal operation. If normal operation cannot be restored, do not attempt to check inside the equipment. Any servicing should be referred to a qualified technician.

Problem

 

Probable cause

 

Remedy

Power cannot be

Mains switchboard may be

Turn on the mains switchboard.

turned on.

 

off.

 

 

 

 

 

 

 

(DC) voltage is too high.

Check supply voltage.

 

Battery may have

Recharge battery and tighten battery

 

 

discharged, or poor contact

 

terminals.

 

 

at terminals.

 

 

 

 

 

 

Display

Contrast is too low.

Operate the [9/

 

 

] key to adjust

 

 

indications do

 

 

 

contrast.

not appear but

 

 

 

 

 

 

 

 

key lamps are lit.

 

 

 

 

 

 

 

 

Power is on but

Loudspeaker is off.

Operate the [7/

 

 

] key to turn on the

 

 

no sound from

 

 

 

loudspeaker.

loudspeaker.

 

 

 

 

 

 

 

 

Poor articulation

Wrong class of emission

Class of emission should match that of

 

 

may be in use.

 

incoming signal.

Output power

Power is automatically

Wait until the unit returns to normal

reduced to LOW

 

reduced to protect against

 

condition.

 

 

overheating due to

 

 

 

 

 

 

 

 

continuous transmission.

 

 

 

 

 

 

Antenna coupler

Antenna may be

Check antenna connection.

cannot tune

 

disconnected or shorted to

 

 

 

 

 

 

antenna

 

ground.

 

 

 

 

 

 

 

Antenna is out of tunable

Recommended length is 7 to 30

 

 

length.

 

meters.

 

Poor grounding of antenna

Check coupler ground.

 

 

coupler.

 

 

 

 

 

 

 

Breaker in coupler has

Checks mains voltage and polarity. If

 

 

tripped.

 

 

 

normal, reset breaker.

 

Connection cable loosened

 

 

Check cable.

 

 

or disconnected.

 

 

 

 

 

 

 

 

12.7 Error Messages

The table below shows error messages and their meanings.

Error messages

Error message

Meaning

Remedy

Busy: RT

Radiotelephone is in

Wait until the radiotelephone is free.

 

operation.

 

 

 

 

Channel Busy

You attempted to transmit on

The message is automatically erased

 

a channel which is currently

when the channel becomes clear.

 

busy. (This occurs with

 

12-5

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Furuno FS-1570 Simple Troubleshooting, Error Messages, 12-5, Problem Probable cause Remedy, Error message Meaning Remedy