DOCS-010 Manual, SeaBotix Inc. Users, 200 Series – 18 Mar 09 - Rev B - Page 45 of 52
-Upon pressing the OCU power button, a soft click can be heard from the SPS/ICC. The red
LED remains lit and the SPS amber LED begins a continuous cycle of being lit and unlit for
~2 seconds in each state. The OCU power LED is continuously lit and the OCU Auto Head
and Auto Depth LEDs remain unlit.
-A color video image appears on the monitor (from camera #1), and an overlay message,
“SeaBotix LBV 150(300, 600)”, briefly appears on screen. This message is replaced by the
standard overlay as described in the LBV u
ser‟s manual.
-The overlay should appear so that the following conditions are met: Up, Down and
Horizontal Thruster Gains all display “5”. The heading display indicates a valid value (0-
360/does not read 777). The date/time stamp is correct and counting. The depth reading is
approximately 0 (+/-20MS does not read 777.7), and the temperature reading is stable (not -
9 deg C). These conditions indicate a loss of internal communications between the
Motherboard and the sensor board
-The LBV shows the following indications: The green Motherboard communication LEDs are
flashing @ 2 Hz. The Motherboard red 12 VDC and 5 VDC power LEDs are continuously lit
(with no flicker).
-The user is able to operate all LBV functions, i.e.: Operate thrusters in all directions, tilt the
camera chassis, select and focus cameras, operate lamps, open/close grabber, etc.
5.5 Fault Modes
Symptom:
No Video and No LBV Control
This mode is usually accompanied by alternate flashing of the CC Auto Head and Depth
LEDs. OCU Power LED is lit.
Fault:
The SPS is not supplying 360 VDC.
Cause:
The GFI has been tripped due to an insulation failure in the SPS, tether or LBV. The
SPS amber LED flashes one long pulse and two short pulses. All Motherboard LEDs are
unlit.
Fault Isolation:
Unplug the tether from the LBV and energize the LBV as normal. Check for
360 VDC between pins 1-3 & 2-3 at the LBV end of the tether. If 360 VDC is present, the
fault is in the LBV (See “LBV Power Fault Section‟). If it is absent, and the SPS amber LED
is still flashing the „1 long, 2 short‟ error code, unplug the tether from the SPS and energize
the LBV as normal. If the SPS amber LED is still flashing the above error code, the fault is in
the SPS (See „SPS Power Fault Section‟). If the amber LED is in the proper operating
condition, the fault is in the tether
(See „Tether Fault Section‟).
Cause:
The SPS 360 VDC turn on circuit is not operating. The DC voltage readings at the
LBV end of the tether (between pins 1 & 3) are more than 0, but less than 300 VDC. The
LBV Motherboard power LEDs are continuously unlit.
