[CA] [CA11] Axiom 9 RV Sounder issues

[Chuck - Raymarine - Moderator]

ktcarter,

We're one step short of believing that there may be a problem with your MFD. One of our techs believed that the system may be resulting from electrical noise, quite possibly AC ripple, in the power system. To test for the latter, the engine(s) and all equipment (except for the MFD) should be powered ON. The MFD's power cable would then be unplugged from the back side of the MFD and the DC voltage level would be measured at the cable's power pins using a multimeter configured to measure DC voltage. The voltage level should be approximately that of the engine's charging system or the electronics battery(s). The multimeter would then be configured to measure AC voltage and the voltage level would again be measured at the cable's power pins. if an AC voltage measuring 0.01 VAC or greater is measured, then a power condition would be recommended for the system. Should no AC ripple be measured, then it would be recommended that the MFD be sent to Raymarine’s Product Repair Center to be bench checked / serviced.