Testing Components; Motor Components; Drive Motor; Elevation Motor - Landice L Series Diagnostic And Service Manual

1. MOTOR COMPONENTS

DRIVE MOTOR:

Generation Test – all Landice drive motors (110 & 220) are direct current or DC. A DC drive motor
can produce (generate) a DC voltage when it's manually rotated. The DC output is linear to the
speed the motor is rotated. To perform the "Generation Test" follow these steps:
1. Un-plug treadmill from wall outlet.
2. Disconnect drive motor from motor control board.
3. Connect DMM (Digital Multi-Meter) to the drive motor wires.
Note: Your DMM should be set on Volts DC (VDC)
Motor plus (+)
Motor minus (-)
4. Position your DMM so you can read it while standing on the treadbelt.
5. Start to manual push / run on the treadbelt.
Note: You are spinning the drive motor manually. The faster you spin the motor, the higher
the output of DC voltage will register on your DMM.
110 VAC treadmills use a 90 VDC drive motor. For every mile per hour you spin the drive motor
you will generate approximately 10 VDC output. So, at 1 mph you will measure 10VDC +/- and at
9mph you will measure 90VDC +/-.
220 VAC treadmills use a 180 VDC drive motor (double the input voltage, double the size of the
drive motor). For every mile per hour (mph) you spin the drive motor you will generate
approximately 20 VDC output. So, at 1.0mph you will measure 20 VDC +/- and at 9.0mph you will
measure 180 VDC +/-.
If you measure very low DC voltage or zero DC voltage, first check the drive motor brushes for
condition. Motor brushes are the leading cause for drive motor failure. If the motor brushes are
worn below 3/8" in length, replace them. (90VDC Motor Brush part#70222, 180 VDC Motor Brush
part#70223
Alternate Test 1: Attach 9 volt battery to motor leads. There should be motor movement.
Alternate Test 2: Unplug Treadmill. Disconnect Drive Motor wires. Disconnect Drive Belt. Hold
black and white wires together. Spin flywheel. There should be resistance when wires are
connected.

ELEVATION MOTOR

Using your voltmeter measure the input voltage (AC) to the elevation motor. Secure the black
(negative) meter probe to a good chassis ground. Place the red meter probe on the RED wire in
the elevation harness. Press the elevation DOWN key and you should get 120 /220VAC. Place the
red meter probe on the BLACK wire in the elevation harness. Press the elevation UP key and you
should get 120/220VAC. If the elevation motor is getting the proper AC voltage in but does not
turn, replace it.

TESTING COMPONENTS

= Red test lead from DMM
= Black test lead DMM
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