905E, 9.1, 9.10 Treadmills
Page 27
Procedure 6.3 - Replacing the Ribbon Cable on 905e, 9.1
Treadmills Made Before September 14, 1994
Removing and replacing the ribbon cable is a procedure that takes a significant amount of time to
accomplish. Before performing this procedure, ensure that the ribbon cable is defective by
connecting a spare ribbon cable to the upper PCA and lower PCA as described in Procedure 4.1
of the Residential Treadmill Service Manual.
Removing the Ribbon Cable
1. Place the magnetic safety key in the OFF position, then unplug the treadmill from the wall
outlet.
WARNING
Before continuing with this procedure, review the Warning and Caution statements listed in
Section One of the Residential Treadmill Service Manual.
2. Remove the electronic console as described in Procedure 6.1 of this appendix.
3. Remove the lift potentiometer from the potentiometer mounting bracket as described in
Procedure 6.7 of this appendix.
4. Position the crank handle on the lift jack shaft and tighten the screw.
5. Rotate the crank handle in the negative direction until the pressure washer breaks.
Note:
You will hear a loud popping sound when the pressure washer breaks.
6. Loosen the crank handle screw and remove the crank handle from the electronic console.
7. Remove the broken pressure washer and the spacer washer from the lift jack shaft.
8. Remove the screws that secure the potentiometer mounting bracket to the lift column.
9. Slide the drive wheel from the lift jack shaft. Set the drive wheel aside until maintenance
operations are complete.
10. Set the treadmill on its right side.
11. Disconnect the ribbon cable from the lower PCA.
12. Strike the lift jack shaft with the rubber mallet until the lift jack shaft is loosened from its
mounting position.
Note:
Even with the lift jack shaft loosened, the collar may remain lodged in the top of the lift column. If
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