ITC-5 speed calibration failure

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum cstotland,

Before sending the iTC-5 to Raymarine's Product Repair Center, it is recommended that the speed transducer's bare lead be shifted from the speed/temp terminals to the black depth transducer terminal and that the system then be tested. Should the problem persist when connected in this manner, then the iTC-5 should be sent to Raymarine’s Product Repair Center to be bench checked / serviced.