Possible Fault Causes - Precor Experience 700 Series Service Manual

Possible Fault Causes:

Lift motor cable connector pins damaged or not properly seated (plugged in)
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Damaged lift motor windings.
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Lift platform is physically jammed and unable to move.
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Lift fuse is blown (open).
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Bad MC lift motor control circuitry.
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1. Check for damaged lift motor cable wiring and/or connectors:
Inspect the lift motor cable wires and connector pins for damage which could cause
an open or short circuit condition. Make sure the cable connector is properly con-
nected and seated to the MC LIFT connector. Test the incline lift system operation. if
the lift system does not correctly operate, continue procedure.
2. Switch the input power OFF. Disconnect the MC LIFT connector. With an ohmmeter,
measure between terminals 5 (white) & 1 (black) and 5 (white) & 2 (red) of the lift
motor cable LIFT connector. Both readings should be approximately 12 ohms for a
120VAC lift motor and approximately 24 ohms for a 240
ing is significantly high or open replace the lift motor
3. Disconnect the lift motor tube from the lift platform. If the lift platform is jammed, dis-
connect the lift motor from the lift platform. If the lift tube or lift nut is jammed against
the motor housing, rotate the lift nut, or lift tube away from the motor housing:
a. If the lift motor was jammed, make sure the lift fuse is good. Do the Check for a
blown lift motor fuse step.
b. If the lift motor was jammed, recalibrate the lift motor and reinstall the lift motor
into the lift platform, see
c. Verify the lift movement and operation. if there are remaining lift motor fault con-
ditions, continue procedure.
4. Check for a blown lift motor fuse:
a. Remove the MC, see
b. The lift motor fuse (2 Amp) is located on the
Remove the MC bottom cover to access the fuse. Use a small standard screw-
driver to unsnap the clip fasteners and remove the cover.
c. Remove the fuse and use a multimeter to measure the resistance across the
fuse leads. The resistance will read almost zero ohms for a good fuse. any high
or infinite resistance reading indicates the fuse is bad (open circuit).
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voltage in an alternating current circuit
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Lower Printed Circuit Assembly board; also refered to as the Lower PCA or simply as the
lower board. On treadmills, it is the console to base function interface and the motor con-
troller unit (MCU). On self-powered units, it is the lower PCA console to base function inter-
face.
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
"Lift Motor Calibration" on
"Motor Controller (MC) Replacement" on
7 Troubleshooting
System Troubleshooting Procedures
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VAC lift motor. If either read-
page 75.
page 123.
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LPCA board in the MC module.
Page 270