Furuno FEA-2807 Operator's Manual page 463

Alert number 476:
------------------------------------
THIS IS A WARNING THAT YOU ARE USING
ROUTE STEERING WITH ONE POSITION
DEVICE AND WITHOUT ANY LOG DEVICE.
VERIFY AND SELECT SENSORS IN'SENSORS'
Alert number 480: AUTOPILOT RECEIVE ERROR
------------------------------------
AUTOPILOT AND ECDIS CANNOT COMMUNICATE
TOGETHER. CHANGE STEERING MODE TO
'AUTO'.
Alert number 485:
------------------------------------
WAYPOINT IS SOON BEING APPROACHED.
Alert number 488: STEERING: STOP-SYSTEM FAIL
------------------------------------
AUTOPILOT AND ECDIS CANNOT COMMUNICATE
TOGETHER. CHANGE STEERING MODE TO
'AUTO'.
Alert number 489:
------------------------------------
IF ALERT 492 OR 507 HAS BEEN
VALID FOR 10 MINUTES. STEERING MODE
IS AUTOMATICALLY CHANGED TO GOSEA
Alert number 497:
------------------------------------
GYRO, SPEED AND/OR POSITION DATA IS
NOT RECEIVED CORRECTLY.
Alert number 505:
------------------------------------
THIS IS INSTRUCTION TO CHANGE
STEERING MODE. THIS ALERT IS
GENERATED IF THERE ARE NOT
SUFFICIENT SENSORS AVAILABLE TO
CONTINUE GOSEA
Alert number 506:
------------------------------------
THIS IS INSTRUCTION TO CHANGE
STEERING MODE.
GENERATED IF THERE ARE NOT
SUFFICIENT SENSORS AVAILABLE TO
CONTINUE TRACK MODE
Alert number 511:
------------------------------------
IF ALERT 471 HAS BEEN GENERATED
AND LATER CONDITION FOR ALERT 471
DISAPPEARS WITHOUT CHANGING STEERING
MODE FROM "NAVI" TO "AUTO" OR "HAND".
FIRST CHANGE STEERING MODE TO "AUTO"
OR "HAND" AND CHECK THAT PRECONDITIONS
FOR ROUTE STEERING ARE FULFILLED.
ROUTE: NEEDS LOG SENSOR
ROUTE: WPT PREWARNING ALERT
ROUTE: CHANGED TO GOSEA
ROUTE: STOP-SENSOR FAIL
ROUTE: USE GOSEA
ROUTE: USE AUTO CONTROL
THIS ALERT IS
ROUTE: AUTO RESUME DISABLE
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30. Alerts
30-33