72
SYMPTOM
Display lights up,treadbelt does not turn.
Does the relay "click" when
the treadmill is switched on?
YES
Check for 120 VAC between L1
and L2 terminals on the motor
control board.
YES
Disconnect the P1, P2 and P3 wires
from the motor control board.Check
between P1 and P3 for 5000 ohms
resistance. Check the resistance
between P1 and P2 varies from
0 to 5000 ohms when the speed
control knob is turned.
YES
Plug P1, P2 and P3 back into
motor control board. Turn treadmill
on and turn speed up to 9 mph.
Check for 90 VDC between A+ and
A- terminals on motor control board.
1.Check On / Off switch
on
speed control panel.
NO 2. Check wiring between On / Off
switch and relay(wiring harness)
3.Replace relay.
NO 1. Check fuse on motor control
board, replace if necessary.
2.Check for loose connections
on terminal block or broken wires.
NO 1. Check wiring between motor
control board and potentiometer.
2.Replace speed control pot.
(#70132 Sprint 1 / #70169 Sprint 2)
NO Replace
board.
Replace
