When thrusting (or operating auxiliary equipment, See Below)  in ‘X’ direction, The Video image goes blank, lamps go out, and the startup message ‘SeaBotix LBV150(300, 1500) is displayed. Normal (or slightly corrupted) Overlay Data is then shown.
Note	This failure can occur with Grabber and External Lighting when these devices are being operated, but the fault isolation would be the same.
Failure #1	Thruster is drawing excessive current when thrusting.
Cause #1	Motor controller is faulty.
Fault Isolation	In the case of Lateral and Vertical thrusters, simply thrust only one thruster, in one direction at a time until symptom reoccurs. In the case of Port and Starboard Thrusters (since they work together), first determine if the failure is in the forward or aft direction. For example: If the failure occurred in the forward direction, you can determine which thruster failed by utilizing the LBV’s ‘Rotate’ function. Rotating the LBV clockwise causes the Port Thruster is thrusting forward while the Starboard is thrusting aft. By using this feature, the troubleshooter can run each thruster in one direction at a time. The faulty thruster needs to be replaced.

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