Procedure 6.3 - Replacing The Lower Pca - Precor 9.31 Manual

Procedure 6.3 - Replacing the Lower PCA

1. Set the treadmill circuit breaker in the "off" position. Remove the A.C. line cord from the A.C.
outlet.
2. Remove the treadmill's motor cover.
3. Disconnect the lower PCA drive motor leads (red and black) at the mid-point connector
between the lower PCA and the drive, motor. Disconnect Both lift motor connectors (J1 and
J8), the speed sensor connector (J3), the drive motor fan connector (J4), and the A.C. input
wires from the lower PCA. See Diagram 5.2.
4. Remove both lower PCA mounting screws and remove the lower PCA. See Diagram 6.3.
Diagram 6.3 - Lower PCA
5. Set the replacement lower PCA in its mounting position and fasten it with the screws
removed in step 4. Torque the lower PCA mounting screws to 120 inch pounds.
6. The A.C. input wires are the blue and brown wires from A.C. line filter on the front dress
panel. Connect the brown A.C. input wire to the M4 terminal and the blue A.C. input wire to
the M3 terminal of the lower PCA.
7. Connect the black and red drive motor wires to the mating black and red connectors from
the lower PCA.
8. Connect the speed sensor connector to the J3 connector of the lower PCA.
9. Connect the fan connector to the J4 connector of the lower PCA.
9.31, 9.33, 9.35 Treadmill
Mounting
Screw
Page 35