Maeda MK0003, Service Manual, Page: 196 / 348

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(2) Wire single fall selector button
When the “Wire single fall selector button” is pressed, the mode is
set to the wire single fall specification.
“Winch installation selector button” is also automatically selected
and winch operation becomes possible.
When the setting is completed, press the home button to return to
the home screen of the monitor 2.
(3) Winch installation selector button
Pressing the “Winch installation selector button” turns the blue circle
on the left to green and the moment limiter considers the weight of
the winch unit.
Even if the winch is not used with the fixed hook specification
selected, always select this mode when the winch unit is installed on
the boom. (Green)
When the winch has not been installed to the boom, be sure to leave
this button unselected. (Blue)