Telemetry Inoperative; Unit Pauses Unexpectedly; Load Resistance Varies - Life Fitness SC95 Service Manual

Independent Stairclimbers SC95, SC91, SC85, S9i, 95Si, 93Si, 90S, and 95Se
TROUBLESHOOTING GUIDE
SYMPTOM

Telemetry inoperative

Unit pauses unexpectedly

Displayed step activity
inaccurate

Load resistance varies

during operation
PROBABLE CAUSE
Chest strap not making good contact
with body of user
Faulty connection
Faulty transmitter or receiver
Telemetry option disabled
User is out of monitoring range
RPM signal loss
Insufficient pedal travel
Faulty connection
Faulty alternator brushes
Faulty alternator
Faulty alternator control board
Faulty connection
Faulty alternator harness
Faulty alternator
Faulty alternator brushes
7
CORRECTIVE ACTION
Adjust chest strap tightness. Moisten
sensor for better contact with skin.
Verify connections between Polar
receiver and display console. Repair
connections.
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Verify Polar transmitter (chest strap)
and receiver for proper operation.
(pulse simulator required)
Enable telemetry.
Move within three feet (1 meter) of
receiver.
Verify integrity of RPM_ALT signal
between alternator and alternator
control board.
Increase pedal travel during operation.
Verify connections between display
console, alternator control board, and
alternator. Repair connections.
Inspect alternator brushes. Brushes
should be of approximate equal length,
not cracked, or less than ¼" long. If
necessary, replace faulty alternator
brushes.
If necessary, replace alternator.
Verify connections between display
console and alternator control board.
Substitute a working alternator control
board. If necessary, replace alternator
control board.
Verify connections between display
console, alternator control board, and
alternator. Repair connections.
Verify integrity of harness between
alternator and alternator control board.
If necessary, replace alternator.
Inspect alternator brushes. Brushes
should be of approximate equal length,
not cracked, or less than ¼" long. If
necessary, replace faulty alternator
brushes.
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