Raymarine ST40 Owner's Handbook Manual page 21

12
No speed or
temperature
information
No speed
information but
temperature
information is
present
Action
CAUTION
If you need to remove the 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.
The speed transducer paddle wheel may be fouled. Clean the paddle
wheel.
ST40 BIDATA
and
ST40 BIDATA
Action
Check the condition of the speed transducer cable and the
security of the connections.
ST40 BIDATA
and
ST40 BIDATA
ST40 Bidata Instrument Owner's Handbook
OR
ST40
ST40
OR
ST40
ST40
BIDATA
and
BIDATA
D4741-3
BIDATA
and
BIDATA
D4742-2