JRC ALPHAMIDICOURSE Mk2, Installation And Operation Manual

Page: 73 / 99

73 | Maintenance
5.4.2 Alarm code 2: Power Supply Abnormal
This alarm code is generated when the Control Unit’s power is over current or over voltage.
1. Turn OFF the power switch.
2. Wait approx. 20 seconds before turning ON again.
3. Take action according to paragraph 2.5.1 Start , if no alarm code 2 was activated.
4. When alarm code 2 is activated again, turn OFF the power switch and request repair from Alphatron Marine
service engineer, or agent.
5.4.3 Alarm code 3: Inverter Failure
• CAUTION - Not all repeaters operate.
• When checking fuses, turn OFF the power switch, and disconnect the power cable from the ship’s distribution
terminal board.
Alarm is generated when in the Inverter of Master Compass, an over current or over voltage is detected.
1. Turn OFF the power switch.
2. Turn ON again after approx. 20 seconds.
3. Take action according to paragraph 2.5.1 Start , if no alarm code 3 was activated.
4. Check the inverter fuse F1: 12A, located in the base of the master compass, refer to paragraph 5.8.1 Master
Compass Inverter Fuse .
5. When alarm code 3 is activated again, turn OFF the power switch and request repair from Alphatron Marine service
engineer, or agent.
5.4.4 Alarm code 6: Rotor Level Failure
• CAUTION
• The Gyrocompass True heading may have an error.
1. Turn OFF the power switch.
2. Turn ON again after approx. 20 seconds.
3. Take action according to paragraph 2.5.1 Start .
4. Observe the heading of the Gyro Compass for two hours or more.
5. Contact Alphatron Service Engineer, or agent, after checking heading of the Gyro Compass.
5.4.5 Alarm code 8: Zero Cross Failure
• CAUTION
• Determination of the Gyro Compass True Heading when alarm code 8 is activated, may cause a large
change of the True Heading. During automatic navigation, take great care, because a large course change
may have happened.
This Alarm is generated when the reference angle for the gyro compass bearing not can be properly detected, or if a
fault is generated in the bearing calculations.
1. Press DISP button until flashing bearing is displayed by S.S.G or GYt.
2. Adjust the bearing with arr
ow buttons until the bearing corresponds with ship’s actual bearing and press ACK/ENT button
to confirm the change.
If the bearing input was accepted by the control unit its display will show the current bearing without flashing.
3. Contact Alphatron Marine, or agent, even when True Heading has been recovered.