Nautilus Commercial TreadClimber TC916 Service Manual page 22

mechanIcal ServIce
D:
to checK the encoDer ranGe
of movement anD to maKe
Sure the larGe encoDer
Wheel IS not SlIppInG DurInG
movement, folloW theSe
StepS:
9D-1: From the Intro screen, press [Speed UP] [6] [EN-
TER]. The display will read "DIAGNOSTIC". Press
the [Speed UP] or [Speed DOWN] keys to scroll
through the options until "TREADCLIMBER" is
displayed. Press [ENTER].
9D-2: The top line of the display will read: "ENCODER
- XX" (see Figure D-1). Press the [9] key. The PWM
value, which is on the lower line center position,
will change from 255 to 189, and the treadles will
be free to move up and down.
9D-3: Shift your weight to the left side, allowing the left
treadle to fall all the way to the bottom. With the
left treadle held at the bottom, note the number
displayed on the top line, far right. It should read
in the range between [ - 30 ] and [ - 50 ]. Remem-
ber the number.
9D-4: Next, shift your weight to the right side, allowing
the right treadle to fall all the way to the bottom.
The number displayed on the top line, far right
should read in the range between [ 30 ] and [ 50].
Remember the number.
9D-5: Calculate the total range between the two num-
bers. The absolute value of the negative number
(left side down) added to the positive number (right
side down), represents the total encoder range
of motion. This number should be in the range
between 70 and 90 total counts.
9D-6: If the range is less than 70, check to make sure the
large encoder wheel is not slipping.
to check if the encoder wheel is slipping, slowly move the treadles up and down. The encoder value
displayed will hesitate and not count up or down. In other words, the encoder value will not change, even though
there is movement in the treadles. If the encoder value does not change during movement of the treadles, then
the encoder wheel is slipping and needs to be tightened or replaced.

figure D-1