Raymarine ST40 - Manual (Page 16)

Chapter 2: Maintenance and Fault Finding 7
Action
Recharge your vessel’s battery as
soon as possible
Action
Transducer paddle wheel may be
fouled.
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.
Clean the paddle wheel.
SPEED
D4638-1
Action
Check fuse/circuit breaker.
Check power supply.
Check SeaTalk cabling and
connector security.
SPEED
D4639-2
ST40
Action
Check the condition of the transducer
cable and the security of the
connections.
No speed or
water
temperature
information
No speed
information
but water
temperature
information is
present
D4641-2
SPEED ST40
SPEED ST40
Low battery
Display blank
D4640-2
SPEED ST40
SPEED ST40
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