Raymarine G-Series system, Installation Instruction

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8.7 Sonar troubleshooting
Problems with the sonar and their possible causes and solutions are described here.
Problem Possible causes Possible solutions
DSM power supply fault. Check the DSM power supply and cables.
Other DSM fault. Refer to the instructions supplied with the DSM unit.
Check that the DSM is correctly connected to the a SeaTalk hs switch or
crossover coupler (as applicable).
Check the status of the SeaTalk hs switch (if applicable).
SeaTalk hs network problem.
Check that SeaTalk hs cables are free from damage.
No data source for the fishfinder.
Software mismatch between equipment
may prevent communication. Contact Raymarine technical support.
Gain or Frequency settings may be
inappropriate for present conditions. Check the fishfinder presets, gain and frequency settings.
DSM cable fault. Ensure that the power, transducer and all other cables to the DSM unit are
properly connected and free from damage.
Problematic depth readings or sonar
image.
Other DSM fault. Refer to the instructions supplied with the DSM unit.
Troubleshooting
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