Precor Experience 700 line Series Service Manual page 199

can cause the lift platform to jam which in turn can cause a blown lift fuse (see Lift
motion in only one direction step).
5. Verify the lift motor capacitor.
The lift capacitor is mounted inside the lift motor. If the lift capacitor is shorted, the lift
fuse will blow (open). If the lift capacitor is leaky, it may work for lighter people and not
for others. If the lift capacitor is open, the lift platform will not move.
a. Shorted lift motor capacitor test: Disconnect the lift motor connector from the MC
and using an ohmmeter measure between pins 7 (red) 8 (Black) of the lift motor
connector. If the resistance is 0 ohms, replace the lift motor.
b. Leaky or Open lift motor capacitor test: Connect the lift motor cable connector to
the MC. With the incline below 15% (to allow room for lift travel), measure the AC
voltage between pins 7 (red) and 8 (Black) of the lift motor connector. Select the
manual running program and press the INCLINE UP control. The AC voltmeter
should momentarily read between 1.5 to 2.0 times the AC line voltage. If this read-
ing is significantly low, replace the lift motor. Note that the AC line voltage reading
will only be present for a short period before an error condition is displayed
6. Lift motion in only one direction:
A failed MC lift switch or failed lift motor winding can cause this failure.
a. A shorted MC lift switch will cause uncommanded UP or DOWN lift movement as
soon as the machine is powered up. Typically this fault will cause the lift platform
to be jammed and it will also probably cause the MC lift fuse to blow. If the lift
moves as soon as the power is turned on and eventually jams, the MC must be
replaced. Refer to error code 44 for more information.
b. An open MC lift switch will cause the lift to only move in one direction. Perform the
following steps to determine if the switch is open:
6 Troubleshooting
System Troubleshooting Procedures
Page 191