Immediate, Excessive Resistance Load During Program - Life Fitness LS 9100 Service Manual

Life Fitness 9100/9500HR Belt Drive Stairclimbers
TROUBLESHOOTING GUIDES
Symptom: IMMEDIATE, EXCESSIVE RESISTANCE LOAD DURING PROGRAM
Symptom
Upon start of the program,
excessive resistance load
is immediate; no normal,
incremental increase from
"no load."
Probable Cause
Wire connectors not seated
properly
Alternator cable
Alternator brushes
Alternator
Power Control Board (PCB)
Display Console
Corrective Action
Remove the Display Console and then
disconnect and reconnect the harness
connections at the Display Console.
Remove shroud. See How To....
Verify field wire is connected. Use an
ohmmeter to verify cable.
Perform step alternator test. Tension should
increase as INCREASE key is pressed. If
tension does not increase, inspect alternator
brushes. Brushes should not be cracked or less
than 1/4 inch long. Brushes should be of
approximately equal length. Field wire should
be connected.
Replace faulty alternator brushes.
Perform field duty cycle test. See diagnostic.
Replace faulty alternator.
Using a voltmeter, verify power at test points.
See wiring diagram for voltage outputs and pin
locations
Replace faulty PCB.
Verify 8 VDC, cable, and Display Console
connections. See wiring diagram for pin
locations.
Replace faulty Display Console.
For Assistance Contact
Life Fitness Customer Support Services
Teleph.: 847.451.0036 or 800.351.3737
Telefacs.: 847.288.3702 or 800.216.8893
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