Precor EFX546 Service Manual download pdf (Page 31)

C546 Self Powered Elliptical Fitness Crosstrainer

Page 31

8. Remove both front covers. Enter the diagnostic program, if necessary, per Procedure 3.2.

Using the diagnostic program allows to test the lift system without continuously pedalling the

unit. Connect a DC volt meter to the lift motor cable as follows: voltmeter common lead to

terminal 2 (brown wire) and voltmeter “hot” lead to terminal 3 (red wire). Using the

CROSSRAMP

, keys operate the lift. The voltmeter should read +12 Vdc when the lift is

instructed to move upward and -12 Vdc when the lift is instructed to move downward.

9. If the voltage measurements in step 8 are correct replace the lift motor. If the either voltage

measurement in step 4 is significantly low, continue with step 10.

10. Verify that all of the wires in the intermediate lift cable (the cable inserted in to J3 of the

lower PCA) are securely inserted into the connector housing and providing a good electrical

connection.

11. If you have performed all of the above tests and are unable to resolve the problem, contact

Precor customer support

12. Enter the diagnostic program per Procedure 3.2 and advance to the Lift Test. If the A/D

reading is either 0 or 255, skip to step 15.

13. Using the CROSSRAMP

, keys operate the lift. If the A/D reading tracks the lift

movement smoothly without skips, calibrate the lift motor per Procedure 5.3 and re-test lift

functions in a normal operating mode.

14. If the A/D reading was erratic and did not smoothly follow lift motion, visually check the

connections between the lift intermediate cable and the J3 connector on the lower PCA and

between the lift intermediate cable lift motor cable.

15. Exit the diagnostics program, and leave the unit idle long enough for it to “shut off”.

Disconnect the red battery lead from terminal M6 of the lower PCA. Remove the lift

intermediate cable from the J3 connector of the lower PCA. Using an ohmmeter, test

between terminal 4 (green wire) and terminal 6 (brown wire) of the lift intermediate cable.

The ohmmeter should read approximately 1000Ω.

16. Test between terminal 4 (green wire) and terminal 5 (black wire) of the lift intermediate cable

and between terminal 5 (black wire) and terminal 6 (brown wire) of the lift intermediate

cable. These two readings should total approximately 1000Ω.

17. If the readings in steps 15 and 16 are correct, skip to step 19. If either reading is significantly

high or low, continue with step 18.

18. Disconnect the lift intermediate cable from the lift motor cable. Using an ohmmeter read

each of the six wires in the lift intermediate cable from end to end. Each of the wires in the

lift intermediate cable should read less than 1Ω. If any of the readings are significantly high,

replace the lift intermediate cable. If all of the readings are correct, continue with step 19.

19. Replace the lift motor. Calibrate the lift motor per Procedure 5.3.

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Precor EFX546 Service Manual Page 31