Alternator Belt Slipping; No Power; Not Reading Heart Rate - Life Fitness 9500 Series Service Manual

Life Fitness Model 9500 Series Cross-Trainers
Malfunction
Front to back play in pedal /
arm.

Alternator belt slipping.

No Power.

Not reading heart rate.

Probable Cause
Worn bearings.
Poly-V pulley on intermediate
shaft is loose.
Crank Arm is loose.
Loose or worn alternator belt
Verify unit is turned on.
Line cord damaged.
Damaged cable.
Circuit breaker blown.
Fuse on control board is blown.
Faulty entry module.
Faulty power control board.
Cable connection.
Pinched cable in RT/LT side.
Not communicating with DSP
board.
Corrective Action
Check for front to back movement in bearings
that connect pedal lever and crank arm or in
the 14" link.
Replace linkage bearing assembly.
Replace intermediate shaft assembly
(See How To...).
Loosen set screws and clamping screw in
Crank arm Assembly. Place blue Locktite
on screws. Tighten set screws first and then
tighten the clamping screw.
Inspect for damage: replace alternator belt if
necessary. Adjust tension (See How To...).
Turn on at the ON/OFF switch.
Inspect AC line cord, verify no damage.
Inspect all cables for damage.
Reset circuit breakers. Replace if needed.
Replace control board.
Using a voltmeter, verify 14 v AC is at J4 on the
power control board.
Replace entry module.
Using a voltmeter, verify 8 V DC at J1 pin 4 and
7 (see wiring diagram).
Disconnect and reconnect display console
cable connection
Remove shroud caps and inspect cables.
Replace damaged cable.
Inspect cable to make sure the right side cable
is on the users right, and the left is on the left
side.
Enter diagnostic, see if DSP and monitor
version are displayed. If not displayed, replace
DSP board.
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