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8.4. Umbilical Troubleshooting
Troubleshooting by way of simple continuity checks through the umbilical are not
effective due to the isolation circuit.
Static, spike and signal conditioning are built into the umbilical for the network signals.
Power fuses are provided within the umbilical for the power distribution to the various
receptacles. When troubleshooting, if a module is not functioning properly when
plugged into a receptacle, it may be plugged into any other matching receptacle.
8.5. Additional Issues
Problem
Possible Cause
Solution
Handheld
controller
display does not
activate
Input power requirements
not met.
Ensure input power meets requirements.
(see “Power Requirements” on page 10)
Handheld controller not
plugged into umbilical
Plug handheld controller into umbilical.
Ensure connectors are dry, clean and
connector pins are not bent.
Umbilical cable not
properly connected.
Check umbilical cable connections at both
ends. Ensure connectors are dry, clean and
connector pins are not bent.
NAVIC
system not started. Start the
NAVIC
system.
(see “System
Startup” on page 131)
Damaged components
in handheld controller,
crawler, power controller or
cabling.
Contact manufacturer.
(see “Jireh Industries
Ltd.” on page 3)
Handheld
controller
display is
activated, yet
crawler does not
drive
Handheld controller is not
in correct mode for driving.
(see “Mode Select Screen” on page 138 for
additional details)
.
Damaged components
in handheld controller,
crawler, power controller or
cabling.
Contact manufacturer.
(see “Jireh Industries
Ltd.” on page 3)
Crawler does
not drive and is
unreachable
See possible causes for
problem one.
See solutions for problem one. If the
crawler is still unresponsive
(see “Retrieval of
a Stranded Crawler” on page 161)
Crawler does
not steer
properly
A drive module is dead
Contact manufacturer.
(see “Jireh Industries
Ltd.” on page 3)