No Or Incorrect Pedaling Resistance - Precor UBK13 Service Manual

If the voltage reading in step 3 was normal, replace the lower PCA. If the lower PCA did not correct
4
the problem, continue with step 5.
5 With the unit powered up, measure between test point 24 and test point 37 for approximately 7.5
Vdc. If the measurement is correct, skip to step 8.
Figure 4: Lower PCA Connectors
6 If the measurement in step 5 is significantly low or high, disconnect the interconnect cable from the
J2 connector and repeat the measurement in step 5.
7 If the measurement in step 5 is still significantly low or high, replace the lower PCA. If replacing the
lower PCA does correct the problem, skip to step 8.
8 Remove the upper display panel and disconnect the interconnect cable form the upper PCA. With
the unit powered up, check the voltage between the outer two pins of the interconnect cable for DC
volts. It should read approximately 7.5 Vdc. Note: The interconnect pins can be difficult to get good
connections with the meter leads. If the voltage is absent or significantly low, troubleshoot the
interconnect cable.
9 If the voltage measurement in step 5 is correct, replace the upper PCA.
If you have performed all of the previous tests and have not been able to locate the trouble, call Precor
customer support.
No or Incorrect Pedaling
Resistance
1 If the display is not illuminated, go to Procedure, Display does not Illuminate.
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