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Fault Finding
20220760L 107
8 FAULT FINDING
This chart assumes that the instrument is part of an IS15
instrument system including an IS15 Transceiver, or an IS15
Power Supply or Expander. If it is connected to another
equipment as a NMEA repeater, then perform the equivalent
checks on that equipment.
General Display and Communications Faults
Condition Probable Cause Action
All instruments have
blank displays.
No 12V Power
Supply.
Check that the ships instrument system
fuse(s) or circuit breaker(s) are not blown /
tripped.
Check the power supply wiring to the IS15
Transceiver.
Check the green LED lamp inside the
Transceiver indicating supply polarity OK.
(In order to remove the top cover to the
Transceiver first remove the six fastening
screws.)
Measure the voltage (10,8-15,6V)
Check the Roblink/power cable from the
Transceiver to the instruments.
Measure the voltage. Should be 18VDC.
Contact your dealer.
One instrument in
the middle of the
chain have blank
display
Instrument head is
defective.
Replace instrument (Perform master reset
and new setup).
One or more
instruments at the
end of a chain have
blank displays.
There is no Roblink/
supply to the affected
instrument (s).
Check the Roblink/power cable(s) to the
affected instrument(s).
Contact your dealer.
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  • Simrad is15 multi???
    How do u convert display depth meters to feet?
    Help Submitted on 17-6-2023 at 13:49

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