Suzuki SMD16 Operator's Manual page 314

Problem
Noise or interference shows on
the display.
• Make sure the transducer cable is not near the engine.
• Check the ground for tight connection, corrosion.
• Check if another fish finder near your boat has the same fre-
quency as your fish finder.
• Try to reject the interference with [Interference Rejection] in the
[Settings] - [Sounder] menu.
15. MAINTENANCE, TROUBLESHOOTING
Remedy
15-5