Furuno FAR2167DS-BB - Manual (Page 45)

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How to access the INITIALIZE Menu with Control Unit RCU-015
1. Use the trackball to place the
pointer on the MENU box so it
is highlighted. DO NOT click
the menu box - just leave the
pointer over "MENU".
2. Press and hold down the F1
key. Keep it held down during
the next step.
3. Push the right button five times.
You should hear three beeps
on the fifth push.
The INITIALIZE menu appears.
Choose 4 INSTALLATION to
show the installation menus.
Menu operation with trackball module
1. Roll the trackball to choose the MENU box and then push
the thumbwheel or left button.
2. Spin the thumbwheel to choose menu item and then push
the thumbwheel or left button.
3. Spin the thumbwheel to choose menu option and then
push the thumbwheel or left button.
4. Left-click the MENU box to close the menu.