6. MAINTENANCE, TROUBLESHOOTING
6-5
6.7 Error Messages
The table below shows the error messages which may appear on the display. All error
messages are accompanied by an audio alarm, which you may silence with the R/B key.
Message Meaning, Remedy
Hull Unit
HULL UNIT
POWER OFF
(CHECK BREAKER AND FUSE.)
PRESS R/B KEY TO SILENCE ALARM.
Hull unit is not powered. Silence the audio
alarm with the R/B key, and then turn on the
hull unit to erase the message and restore
normal operation.
RAISE/LOWER FUNCTION HAS NOT BEEN
COMPLETED.
CHECK IF THE BREAKER AT THE HULL UNIT
HAS BEEN ACTIVATED.
MAXIMUM ALLOWABLE SPEED IS 15 KNOTS
WHILE SOUNDOME IS BEING RETRACTED.
PRESS R/B KEY TO SILENCE ALARM.
You attempted to raise or lower the
transducer when the ship’s speed is above
15 knots or the breaker on the hull unit
tripped. Check the breaker and lower the
ship’s speed below 15 knots to execute
function desired.
Frequency Code Error
FREQUENCY CODE ERROR
(CHECK TRANSCEIVER UNIT.)
PRESS R/B KEY TO SILENCE ALARM.
CPU does not receive frequency flag from
transducer. Silence the audio alarm with the
R/B key, and then check the transceiver
unit.
Train Error
TRAIN NG
CPU does not receive heading signal.
Check source of heading signal.
Excessive Speed
SHIPS SPEED EXCEEDS 15 kt.
(SLOW DOWN UNDER 15 kt WHEN MOVING
TRANSDUCER.)
PRESS R/B KEY TO SILENCE ALARM.
TRANSDUCER REMAINS LOWERED.
(REDUCE SHIP'S SPEED AND PRESS
↑ TO
RETRACT IT.)
PRESS R/B KEY TO SILENCE ALARM.
See page 5-13 for details.