DOCS-001 Manual, SeaBotix Inc. Users, 150 – 200 Series - Rev B – 27 Jan 10 - Page 49 of 64
Cause: The SPS is configured for 240 VAC operation but is plugged into a 120 VAC
supply. Reconfigure as per the procedures manual.
Cause
: The SPS is configured for 120 VAC operation but is plugged into a 240 VAC
supply. SPS board power input section is damaged and must be returned to the factory
for replacement or repair.
Fault: The LBV Vehicle Power Supply is shorted. The Motherboard power LEDs are
flashing.
Cause: Various (See “LBV Power Failure Section”).
Fault: Communications error inside the LBV. The Motherboard power LEDs are normal but
either one or both communication LEDs are unlit or lit but not flashing.
Cause: Various (See “LBV Communication Failure Section”).
Symptom: No thruster, grabber and/or ELS control, but video is present and cameras are
controllable.
Fault: The Vehicle Power Supply has shut down power to the backplane. All LEDs are normal.
Cause: One or more external LBV component has a short between 28 VDC and
ground.
Fault Isolation: Following the procedure manual, remove one backplane
component at a time, re-energizing the LBV each time to test for normal
operation of the remaining components.
Be advised that (though all thrusters are modular and interchangeable) the port
and starboard thrusters operate in concert. So, if no thrusters operate, and the
port thruster (which for this example will “play dead”) is removed, the starboard
thruster may operate erratically. As long as the vertical thruster now acts
normally, the problem was indeed the port thruster. In this case the port thruster
is to be replaced. The fault could have been the grabber and others as well.
Cause: The VPS backplane over current protection circuit has otherwise failed (See
“LBV Power Failure Section”).
Symptom: 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.
Fault: The thruster is drawing excessive current when thrusting.
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