Raymarine A65, Installation And Operation Instructions Manual

Page: 278 / 308

27.5 Sonar troubleshooting
Problems with the sonar and their possible causes and solutions are described here.
Problem Possible causes Possible solutions
Unit power supply fault. Check the unit power supply and cables.
Other unit fault. Refer to the instructions supplied with the unit.
Check that the unit is correctly connected to a Raymarine network SeaTalk hs
switch or crossover coupler (as applicable).
Check the status of the Raymarine network switch (if applicable).
SeaTalk hs / RayNet network problem.
Check that SeaTalk hs / RayNet cables are free from damage.
Sonar data not available on multifunction
display.
Software mismatch between equipment
may prevent communication. Contact Raymarine technical support.
Gain or Frequency settings may be
inappropriate for present conditions. Check the sonar presets, gain and frequency settings.
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.
Unit cable fault. Ensure that the power, transducer and all other cables to the unit are
properly connected and free from damage.
Check that the transducer is mounted correctly and is clean. Transducer fault
If you have a transom-mount transducer, check that the transducer hasn't
kicked up due to hitting an object.
Other unit fault. Refer to the instructions supplied with the unit.
Vessel stationary Fish arches are not displayed if the vessel is stationary, fish will appear on
the display as straight lines.
High vessel speed Turbulence around the transducer may be confusing the unit.
Problematic depth readings or sonar
image.
Scroll speed set to zero Adjust scroll speed
Paddle wheel fault Check that the paddle wheel is clean.
No speed offset set Add speed offset.
Incorrect speed reading
Incorrect calibration Re-calibrate equipment
278 New a Series / New c Series / New e Series