6-6
Symptom of Error Possible Cause or Cause of Fault Countermeasures
The control unit malfunctions. Replace the CDJ-2779 circuit
board.
The illumination does
not light.
The LCD malfunctions. Replace the LCD.
The transponder power supply is
not turned on.
Turn on the transponder power
unit.
The whip antenna is damaged. Replace the whip antenna.
No AIS message is
received.
The following alarm number
appears: 003, 004, or 005.
The synthesizer in the receiving
circuit is unlocked.
Replace the transponder.
The following alarm number
appears.
001, 052, 53: Power circuit fault
001, 054: PA collector current
abnormal
001, 055: PA temperature
abnormal
001, 058: PA protection circuit
operated
001, 060: TX synthesizer unlock
operated
003, 004, 005: RX synthesizer
unlock operated
Replace the transponder.
001, 057: Antenna not connected Check that the antenna is
connected.
Check setting of the external and
internal antennas.
No AIS message is
transmitted.
001, 002: VSWR abnormal Check that the antenna is
connected.
Check that there are no objects
around the antenna.
Replace the antenna and check for
normal transmission.
The polarity of the serial cable is
incorrect.
Check if the polarity is correct and
connect it.
The interface between the sensor
and connection box is incorrect.
Check if the interface is correct
before its connection.
The sentence that the sensor
generates is not supported by the
AIS.
Check the output command and
the version.
The serial format (baud rate, etc.)
does not meet the setting of the
controller.
Check the serial format of the
sensor.
The sentence that the sensor
generates does not match the
sentence setting of the controller.
Check the serial format of the
sensor.
The valid/invalid sensor data flag
is invalid.
Check if the sensor is working
correctly.
The sensor (GPS, gyro,
rate-of-turn indicator)
malfunctions.
Replace the sensor.
Sensor data (external
GPS, gyro, and
rate-of-turn) cannot
be loaded.
The control unit malfunctions. Replace the CDJ-3182 circuit
board.
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