Procedure 7.3 - Replacing a Lower PCA
Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch
points exist between the stairarm and ramp and between the stairarm and crankarm, when the
rear covers are removed.
Procedure
1. Set the on/off switch in the “off” position, then unplug the power cord from the A.C. outlet.
WARNING
Before continuing with this procedure, review the Warning and Caution statements listed in
Section One, Things You Should Know.
2. Remove the left and right hand cover sections per Procedure 7.1.
3. Attach an antistatic wrist strap to your arm, then connect the ground lead of the wrist strap to
the EFX frame ground or unpainted surface.
4. Remove the snap-on cover from the lower PCA.
5. Disconnect the magnet cable (J1), the speed sensor cable (J7), the lift drive cable (J4), the
lift position cable (J5), the data cable (J6), green-yellow ground wire and A.C. cables (J2 &
J3) from the lower PCA. See Diagram 6.3.
6. Remove the three remaining screws that secure the lower PCA to the front cover section.
Remove the lower PCA.
7. Position the replacement lower PCA at its mounting position on the front cover section.
Fasten the lower PCA with the screws removed in step.6, torque the screws to 6-9 inch
pounds.
8. Reconnect the data cable(J6), the speed sensor cable (J7), the lift drive cable (J4), the lift
position cable (J5), the magnet cable (J1), green-yellow ground wire, the blue A.C. wire to
(J3) and the brown A.C. wire to (J2).
9. Replace the snap-on cover on the lower PCA.
10. Replace the left, and right hand cover sections per Procedure 7.1.
11. Check operation as described in Section Four.
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