Precor 9.41si Service Manual download pdf (Page 7)

C942 Treadmill

8. Remove the P2 connector from the lower board. Using an ohmmeter, measure between

terminals 1 and 3 of P2, between terminals 1 and 2 of P2 and between terminals 2 and 3 of

P2. The measurements should be approximately 14.5Ω, 14.5Ω and 29Ω, respectively. If any

of the measurements are significantly low, replace the lift motor.

9. Re-insert the P2 connector in the lower PCA. Set the treadmill circuit breaker in the “on”

position. Using an AC voltmeter, monitor the voltage between terminals 1 and 2 (red and

white wires) of the P2 connector. Enter the manual program and press the INCLINE

▲ key.

The measurement should be approximately 120 Vac (line voltage). If the voltage is present

and the lift motor moves normally, skip to step 10. The voltage will only be present until such

time as an error occurs. If line voltage is not present skip to step 11. If line voltage is

measured but the motor does not move, replace the lift motor.

10. Monitor terminals 1 and 3 (white and black wires) of P2. Enter the manual program and

press the INCLINE

▼ key. The measurement should be approximately 120 Vac (line

voltage). If the voltage is present and the lift motor moves normally skip to step 12. The

voltage will only be present until such time as an error occurs. If line voltage is measured but

the motor does not move, replace the lift motor.

11. If line voltage is not present in both steps 9 and 10, there are three parts that could cause

the problem. There are not any good tests to check these parts other than substituting a

known good part. They are lower PCA, ribbon cable and upper PCA. Replace only one part

at a time. If the new part does not correct the problem replace the original part.

12. If you have performed all of the above tests and the lift system is still not functioning, call

Precor Technical Support.

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Precor 9.41si Service Manual Page 7