Precor 9.31 Service Manual page 6

23. It is suggested that you perform this test on a treadmill known to be in excellent operating
condition. Note the values displayed at a fixed speed (such as 3 MPH) and your body
weight. Those values may then be used to benchmark the operation of treadmills you are
diagnosing.
24. Press press the ENTER key to proceed to the belt power test.
25. The display will momentarily read BELT POWER TEST.
26. The belt power test is similar to the belt speed test except that the SPEED keys control the
power bits (PWM value) instead of the belt speed.
27. The same (see step 16) values will be displayed as in the belt speed test.
28. This test is valuable in diagnosing treadmill response to load conditions. As load is
increased, the power bits are kept at a constant value (as set via the SPEED keys) and the
current and belt speed will vary proportionately to the load.
29. It is suggested that you perform this test on a treadmill known to be in excellent operating
condition. Note the values displayed at a fixed power bit reading (as set by the SPEED
keys) and your body weight. Those values may then be used to benchmark the operation of
treadmills you are diagnosing.
30. The belt power test is the last test in the diagnostics routine. Press the RESET or the
ENTER key to exit the diagnostics routine.
Diagram 2.2 - 9.31 Display
31. The keys on the display are hypothetically numbered 1 to 7 from left to right. See Diagram
2.2. QUICK START is key number 4.
32. The display will momentarily read DISPLAY TEST.
9.31, 9.33, 9.35 Treadmill
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