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

Procedure 6.11 - Replacing the Upper PCA

Note: If the upper PCA is replaced, the treadmill calibration 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. Refer to
Diagram 6.9.
4. Disconnect the data cable from the JK8 connector and the heart rate cable from the JK5
connector on the console. See Diagram 5.1.
5. Remove the six screws that fasten the console rear cover to the display face, remove the
console rear cover.
6. Disconnect the keypad cable from the JK6, the safety key cable from the JK7 connector and
the user 1/2 keypad cable from the JK10 connector on the upper PCA.
7. Remove the four screws that fasten the upper PCA to the display face and remove the
upper PCA from the display face.
8. Set the replacement upper PCA in its mounting position in the display face and fasten it with
the hardware removed in step 7. Connect the keypad cable to the JK6 connector, the safety
switch cable to the JK7 connector and the user 1/2 keypad cable to the JK10 connector of
the upper PCA.
9. Set the console rear cover in its mounting position on the display face and fasten it with the
hardware removed in step 5.
10. Connect the data cable to the JK8 connector and the heart rate cable (9.27 only) to the JK5
connector on the console. See Diagrams 5.1.
11. Fasten the console to the backplate with the hardware removed in step 3.
12. Perform Procedure 2.3, treadmill calibration.
13. Check treadmill operation per Section 3.
20081-118
9.23, 9.27 Treadmill
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