I have a A65 chartplotter on which the log and trip function does not register.it is the second unit with the same problem all other functions work
how can I solve the problem?
It is unlikely the problem is in the A65 screen.....most likely it is an issue with the paddlewheel itself, its circuit in the depth/speed transducer, or least likely, in the DSM25 sounder module.
Both the log and the trip functiions are read from the paddle-wheel sensor of the connected DSM25 sounder module and transducer.
1. Make sure you have a DSM25 sounder module and transducer with a paddle wheel (the A65 is available without the DSM25 option.)
Double check the connections between the DSM25 and the A65, as well as the transducer connection to the A65. There is an indicator light on the DSM25 to confirm it is on.
2. Make sure the paddle wheel turns freely. They tend to get fouled easily with debris and growth.
3. Make sure the A65 is giving to a reading for SPEED when underway or when having a buddy spin the paddlewheel by hand. Do not confuse SPEED with SOG. SPEED is from the paddlewheel.....SOG (Speed over ground) comes from your GPS sensor and is not used by A65 for log or trip purposes.
If you get npo speed reading at all the paddle wheel may be defective or the depth/speed transducer may be defective. See your dealer about a replacement.
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