Precor 9.31 Manual page 22

4. Insert the treadmill's A.C. line cord in the A.C. outlet and set the circuit breaker in the "on"
position. Set the treadmill in the manual program and press the LIFT
operates normally, test treadmill operation per Section 3. If the lift motor still does not
operate, retest the lift fuse per steps 2 & 3. If the fuse is open again, continue with step 13. If
the fuse is good continue with step 5.
5. Connect an A.C. voltmeter between terminals 1 & 4 of the J1 connector. See Diagram 5.2.
Set the treadmill in the manual program and press the LIFT
should read A.C. line voltage (120 Vac) and the red DS1 LED should illuminate. Note that
the A.C. line voltage reading will only be present prior to an error condition occurring.
6. If the F1 fuse is good and the DS1 LED illuminates and the A.C. voltmeter does not read the
presence of A.C. line voltage replace the lower logic PCA per Procedure 6.3.
7. If the DS1 LED does not illuminate and the display indicates that the lift should be moving
upward, replace the upper PCA.
8. If the A.C. voltmeter reads the presence of A.C. line voltage and an error 40 is displayed, go
to step 10.
9. If the A.C. voltmeter reads the presence of A.C. line voltage and an error 42 is displayed,
continue with step 11.
10. Set the treadmill's circuit breaker in the "off" position and remove the A.C. line cord from the
A.C. outlet. Remove the lift motor connector from the J1 connector on the lower PCA.
Visually. inspect the lift motor connector for broken or improperly crimped connections.
Using an ohmmeter, read the resistance between terminals 1 & 4 and between terminals
3 & 4. Both readings should be approximately 13.25 Ω. If either reading is open or very high
resistance, replace the lift motor per Procedure 6.1.
11. Set the treadmill's circuit breaker in the "off" position and remove the A.C. line cord from the
A.C. outlet. Remove the lift motor connector from the J8 connector on the lower PCA.
Visually inspect the lift motor connector for broken or improperly crimped connections.
Using an ohmmeter, measure between terminals 1 & 3, 1 & 2 and 2 & 3 of the lift motor
connector. Terminals 1 and 3 should read approximately 1 KΩ. The sum of the two readings
between terminals 2 & 3 and 1 & 2 should total approximately 1 KΩ. If either reading is open
or very high resistance, replace the lift motor per Procedure 6.1.
12. If you have performed all of the procedures above and have been unable to correct the
problem, call Precor customer service.
13. Set the treadmill's circuit breaker in the "off" position and remove the A.C. line cord from the
A.C. outlet. Remove the lift motor connector from the J1 connector on the lower PCA.
Visually inspect the lift motor connector for broken, frayed or improperly crimped
connections. Using an ohmmeter, read the resistance between terminals 1 & 4, 3 & 4 and 1
& 3. The readings should be approximately 13.25 Ω, 13.25 Ω and 26.5 Ω, respectively. If the
reading is significantly low, replace the lift motor per Procedure 6.1.
9.31, 9.33, 9.35 Treadmill
key. If the lift motor
key. The A.C. voltmeter
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