JRC JHS-183 Instruction Manual page 106

Symptom of Error
The illumination does
not light.
No AIS message is
received.
No AIS message is
transmitted.
Sensor data (external
GPS, gyro, and
rate-of-turn) cannot be
loaded.
6-8
Possible Cause or Cause of Fault
The control unit malfunctions.
The LCD malfunctions.
The transponder is not turned on.
The whip antenna is damaged.
The following alarm number
appears: 003, 004, or 005.
The synthesizer in the receiving
circuit is unlocked.
Channel setting is not correct.
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
001, 057: Antenna not connected
001, 002: VSWR abnormal
MMSI has been set "000000000"
The cable is not connected
properly.
The polarity of the serial cable is
incorrect.
The interface between the sensor
and connection box is incorrect.
The sentence that the sensor
generates is not supported by the
AIS.
The sentence that the sensor
generates does not match the
sentence setting of the controller.
The sensor data flag has been set
to "invalid".
The sensor (GPS, gyro, rate-of-turn
indicator) malfunctions.
The control unit malfunctions.
Countermeasures
Replace the CDJ-2983 circuit
board.
Replace the LCD unit.
Confirm whether the transponder is
turned on.
(MENU 3.1.1 TRANSPONDER)
Replace the whip antenna.
Replace the transponder.
Set it by operating channels.
(MENU 4.6 CHANNEL/POWER)
Replace the transponder.
Check that the antenna is
connected.
Check the setting of antenna
selection from external and internal.
Check that the antenna is
connected.
Check that there are no objects
around the antenna.
Replace the antenna and check for
normal transmission.
Set the MMSI correctly.
Check the connection.
Check the polarity and connect it.
Check the interface before its
connection.
Check the output command and the
version.
(Refer to 8.3.4 Supported Interface
Sentence)
Check the output sentence and
sensor setting of JHS-183.
Check if the sensor is working
correctly.
Replace the sensor.
Replace the CDJ-2983 circuit
board.