Raymarine A65, Operation Instructions Manual

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Possible causes Possible solutions
6. With the product under load, using a multi-meter, check for high voltage drop
across all connectors/fuses etc (this can cause the Fishfinder applications to
stop scrolling or the unit to reset/turn off), replace if necessary.
Vessel speed too high Slow vessel speed and recheck.
Note: A Sonar channel will be able to hold bottom at higher speeds than
the DownVision ™ channel.
Bottom too shallow or too deep The bottom depth may be outside of the transducers depth range, move vessel
to shallower or deeper waters as relevant and recheck.
Note: Depending on water conditions, Sonar channels maybe able to
achieve increased depth range over a DownVision ™ channel.
Poor / problematic image
Possible causes Possible solutions
Vessel stationary Fish arches are not displayed if the vessel is stationary; fish will appear on the
display as straight lines.
Scrolling paused or speed set too low Unpause or increase sonar scrolling speed.
Sensitivity settings may be inappropriate for
present conditions. Check and adjust sensitivity settings or perform a Sonar reset.
Damaged cables 1. Check the unit’s connector for broken or bent pins.
2. Check that the cable connector is fully inserted into the unit and that the
locking collar is in the locked position.
3. Check the cable and connectors for signs of damage or corrosion, replace
if necessary.
4. With the unit turned on, try flexing the power cable near to the display
connector to see if this causes the unit to re-boot/loose power, replace
if necessary.
5. Check the vessel’s battery voltage, the condition of the battery terminals
and power supply cables, ensuring connections are secure, clean and free
from corrosion, replace if necessary.
6. With the product under load, using a multi-meter, check for high voltage drop
across all connectors/fuses etc (this can cause the Fishfinder applications to
stop scrolling or the unit to reset/turn off), replace if necessary.
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 the condition of the transducer ensuring it is not damaged and is free
from debris / fouling.
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 further 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.
Troubleshooting
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