Raymarine RVM-400 Series, Installation Instructions Manual, Page: 42 / 58

Possible causes Possible solutions
Transducer location • Check that the transducer has been installed in
accordance with the instructions provided with
the transducer.
• If a transom mount transducer is mounted too
high on the transom it may be lifting out of the
water, check that the transducer face is fully
submerged when planing and turning.
Transducer
kicked-up If the transducer has a kick-up mechanism, check
that it has not kicked up due to hitting an object.
Damaged or fouled
transducer Check transducer condition, ensuring it is not
damaged and is free from debris/fouling. If
necessary, clean or replace your transducer.
After cleaning or replacement coat the transducer
using a water-based anti-fouling paint.
Damaged transducer
cable Check that the transducer cable and connection
is free from damage and that the connections are
secure and free from corrosion.
Turbulence around
the transducer at
higher speeds may
affect transducer
performance Slow vessel speed and recheck.
Interference from
another transducer 1. Turn off the transducer causing the interference.
2. Reposition the transducers so they are farther
apart.
Unit power supply
fault Check the voltage from the power supply, if this is
too low it can affect the transmitting power of the
unit.
Resetting the sonar module
You can use the reset function on a compatible Raymarine multifunction
display to restore the sonar module to its factory default settings.
In the fishfinder application:
1. Select
[Menu] .
2. Select [Set-up] .
3. Select [Sounder Set-up] .
4. Select [Sonar Reset] .
5. Select [Yes] to confirm or [No] to abort the operation, as appropriate.
The unit will now be reset to factory default settings.
42