Landice L Series Diagnostic And Service Manual page 107

Upper display lights up but treadbelt doesn't move: L5 Error
1. Enter Open Loop Speed Mode.
6.1
(See Page 56)
2. Press FAST until 12.0mph is displayed.
Does four digit display window read SAFE?
6.2
Is the green LED2 light on the PWM lit?
1. Verify 110VAC from blue (L1) and
YES
white (L2) wire from relay board to
PWM.
2. Replace relay board.
Is speed control wiring OK?
6.3
Purple wire from V+ on pwm board to P3 on relay board.
Orange wire from P1 on pwm board to P1 on relay board.
Brown wire from P2 on pwm board to P2 on relay board.
P3 on pwm board has no connection.
6.4
Is the motor wiring OK?
Check the wires from motor to A+ & A-
6.5
Are the motor brushes OK?
UNPLUG treadmill and unscrew brush caps. Verify
brushes are at least 3/8" long and slide freely, Verify
brushes are curved and have no burns or cracks. Check
springs, verify copper wire is not broken or burned.
6.6
Spin the motor shaft by hand.
Is the motor seized or is the shaft broken?
Replace motor/flywheel
NO
YES
YES
YES
YES
YES
Attach safety lanyard.
Is the green BELTSW light
NO
on the relay board lit?
YES
1. Check RED wire on 9 pin harness
for loose connection or pushed pin.
2. Replace upper display board.
NO
NO
Replace motor
NO
brushes.
(2 required)
Verify at least 90VDC from
NO
Black (A+) wire and White
(A-) wire from PWM to Drive
Motor.
Replace PWM.
NO
Correct speed
control wiring.
Correct motor
control wiring.
107