Chapter 2: Maintenance and Fault Finding
11
Fault Cause Remedy
Instrument display blank. No supply. Check supply.
Check cabling and security of
SeaTalk connectors.
Check fuse/breaker.
Return unit for repair.
No speed or temperature Speed transducer Check cabling and
information. cabling problem security of transducer
connections.
No speed information. Speed transducer Clean paddle wheel.
paddle wheel fouled See CAUTION below
No exchange of information SeaTalk cabling Check security of SeaTalk
between SeaTalk instruments problem. connectors.
Disconnect instruments one by
one to isolate faulty unit
Failure of a group of SeaTalk cabling or Check security of connections
instruments in SeaTalk chain connector problem. between functioning and
non-functioning instruments
LAST flashing or dashes Depth transducer or Check cabling cable or
displayed continuously. connector problem. and security of transducer
(depth greater than 3 feet) connections.
LAST flashes while Aerated water Ensure readings stabilises
under way. Boat wakes when clear of disturbed water.
Prop wash etc.
CAUTION
If you need to remove the speed transducer insert, have the
transducer bung to hand and secure it in the transducer body
immediately after the insert has been removed, to prevent
excessive ingress of water.
If you are unable to rectify a problem, contact the Raytheon Product
Support Department or your own National Distributor, for assistance.
040_2c02.p65 09/08/99, 09:3211
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