Procedure 6.11 - Replacing The Upper Pca - Precor 9.23 Service Manual

Procedure 6.11 - Replacing the Upper PCA

Note: If the lower PCA is replaced, the upper PCA to lower PCA initialization procedure
(Procedure 2.3) must be performed to ensure proper operation.
1. Set the treadmill's on/off switch in the "off" position and remove the treadmill's power cord
from the AC outlet.
2. A grounded anti-static wrist strap must be worn whenever the upper PCA is being handled.
3. Remove the four screws that fasten the backplate to the rear of the console and remove the
backplate. Refer to Diagram 6.9.
4. Disconnect the interconnect cable from the JK1 connector on the lower PCA.
5. Disconnect the keypad connector from the JK5 connector on the upper PCA.
6. When furnished, disconnect the heart rate connector from the JK2 connector on the upper
PCA.
7. Remove the five screws that fasten the upper PCA to the console and remove the upper
PCA from the console.
8. Set the replacement upper PCA in its mounting position in the console and fasten it with the
hardware removed in step 7. Connect the keypad connector to the JK5 connector of the
upper PCA.
9. When furnished, connect the heart rate connector to the JK2 connector on the upper PCA.
10. Connect the safety switch connector to the SW1 connector of the upper PCA.
11. Set the backplate in its mounting position and fasten it with the hardware removed in step 3.
12. Perform Procedure 2.3, upper PCA to lower PCA initialization.
13. Check treadmill operation per Section 3.
9.23, 9.27 Treadmill
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