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Function MCK Position Display LEDs Action Remarks
String Up Mode
String Down Mode
Pull MCK out and turn
to Revolving Arrow LED
Pull MCK out and turn
to Revolving Arrow LED
Revolving Arrow and
# LED shine green
Revolving Arrow and
# LED shine green
Activate String Up
Mode by pressing
the display for 3
seconds.
Press the display
once and it will
toggle to String
Down Mode,
indicated by the
Revolving Arrow
switching from
green to red. Now
activate String
Down Mode by
pressing the dis-
play for 3 seconds.
Powerheads will begin
winding strings up
close to normal tuning.
When they stop turning,
activate Normal Tuning
mode to finish tuning
your instrument.
Powerheads will begin
to unwind all strings.
When they stop turning,
unscrew each post’s
locking nut so that you
are able to remove old
strings.
STRING UP / STRING DOWN MODES