The control panel was working fine
It is the Button Locations and Layout that determines the method to get to the DEALER set up.
The Dealer set up has a form to fill out so when you "page" through the inputs, you have the number ready to input.
You must be at berth in the water.
Why?
You set your Rudder angles Maximum rotational angle Starboard to Port, thus the Rudder Position transducer.
Your Rudder will actually move through that angle range, and the reason you need to be a Berth.
I will send the manual for my version in a Private Message sometime this week.
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I have a chain but will check the tension
That is not the issue, but
Dealer Set Up is the key.
After that, you have control over several inputs, like Sea State tuning.
Jim...
PS: Same Control panel as mine.