10.2 Instrument troubleshooting
Fault
Cause
Action
Blank display.
No power supply.
• Check fuse / circuit breaker.
• Check power supply.
• Check SeaTalk / SeaTalk
ng
cabling
and connector security.
SeaTalk / SeaTalk
ng
information not being
transferred between instruments.
SeaTalk / SeaTalk
ng
cabling or connector
fault.
• Check security of SeaTalk / SeaTalk
ng
connections between units.
• Check condition of SeaTalk / SeaTalk
ng
cables.
• Isolate faulty unit by disconnecting
units one by one.
A group of SeaTalk / SeaTalk
ng
units not
working.
SeaTalk / SeaTalk
ng
cabling or connector
fault.
• Check the security of SeaTalk /
SeaTalk
ng
connectors between
functioning and non-functioning units.
• Check the condition of SeaTalk /
SeaTalk
ng
cable between functioning
and non-functioning units.
LAST
flashing or dashes displayed
continuously (depth greater than 3 feet).
Transducer cable or connector fault.
• Check condition of the transducer
cable(s) and the security of the
connections.
LAST
flashes when under way.
Aerated water due to vessel wakes,
propeller wash etc.
• Ensure reading stabilizes when clear
of disturbed water.
Troubleshooting
75
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