Landice L Series Diagnostic And Service Manual page 106

Upper display lights up; treadbelt moves; speed will not increase; L5 error.
5.1
Check speed sensor alignment.
It should be within 1/16" of the flywheel
and parallel to the flywheel.
Is it out of position?
5.2
Unplug 3 wire speed sensor connector
from relay board. Check for pushed pins
or Loose wires.
Any found?
5.3
Unplug 9 wire upper harness connector
from relay board. Check for pushed pins
or loose wires. Specifically look at 5
(Brown) and 9 (Green).
Any found?
5.4
Is speed control wiring OK?
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.
NO
NO
NO
YES
Adjust speed sensor:
1. Use 1/2" wrench and loosen
the two lock nuts securing
YES
sensor to it's bracket.
2. Adjust sensor gap to 1/16".
3. Tighten lock nuts.
Repair or replace
YES speed sensor /
harness assembly.
Repair or replace
YES
upper harness
NO
Replace the speed sensor.
Correct speed
control wiring.
106