EFX 885, 835, 825
Service Manual 20039-166
Page 137
©2011 Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law
8.
Remove the lift cover per Procedure 10.2. Enter the diagnostic program, if necessary, per Procedure 3.1
(P80) or 5.1 (P30). Using the diagnostic program allows to test the incline system without continuously
pedaling the unit. Connect a DC volt meter to the incline motor cable as follows: voltmeter common lead to
terminal 2 (brown wire) and voltmeter hot lead to terminal 3 (red wire). Using the CROSSRAMP
,
keys operate the incline. The voltmeter should read +12 Vdc when the incline is instructed to move upward
and -12 Vdc when the incline is instructed to move downward.
9.
If the voltage measurements in step 8 are correct replace the incline motor. If the either voltage
measurement in step 4 is significantly low, continue with step 10.
10.
Verify that all of the wires in the intermediate cable (the cable inserted in to J3 of the lower PCA) are
securely inserted into the connector housing and providing a good electrical connection.
11.
If you have performed all of the above tests and are unable to resolve the problem, contact Precor
customer support
12.
Enter the diagnostic program per Procedure 3.2 and advance to the Lift Test. If the A/D reading is either 0
or 255, skip to step 15.
13.
Using the CROSSRAMP
,
keys operate the incline. If the A/D reading tracks the incline movement
smoothly without skips, calibrate the incline motor per Procedure 5.3 and re-test incline functions in a
normal operating mode.
14.
If the A/D reading was erratic and did not smoothly follow incline motion, visually check the connections
between the intermediate cable and the J3 connector on the lower PCA and between the intermediate
cable.
15.
Exit the diagnostics program, and leave the unit idle long enough for it to shut off. Disconnect the red
battery lead from terminal M6 of the lower PCA. Remove the intermediate cable from the J3 connector of
the lower PCA. Using an ohmmeter, test between terminal 4 (green wire) and terminal 6 (brown wire) of
the intermediate cable. The ohmmeter should read approximately 1000W.
16.
Test between terminal 4 (green wire) and terminal 5 (black wire) of the intermediate cable and between
terminal 5 (black wire) and terminal 6 (brown wire) of the intermediate cable. These two readings should
total approximately 1000W.
17.
If the readings in steps 15 and 16 are correct, skip to step 19. If either reading is significantly high or low,
continue with step 18.
18.
Disconnect the intermediate cable from the incline motor cable. Using an ohmmeter read each of the six
wires in the intermediate cable from end to end. Each of the wires in the intermediate cable should read
less than 1W. If any of the readings are significantly high, replace the intermediate cable. If all of the
readings are correct, continue with step 19.
19.
Replace the incline motor. Calibrate the incline motor per Procedure 8.3.
Summary of Contents for EFX 825
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