Precor C954 Serivce Manual page 59

7. If the treadmill being serviced operates on 120Vac, the 120Vac jumper must be removed
from the defective lower power PCA and re-installed on the replacement lower power PCA
between the M1 connector and the M6 connector.
Caution
If the treadmill being serviced operates on 240 Vac, the jumper in step 7 must not be installed.
If the jumper is installed and the treadmill is operated on 240 Vac, the lower power PCA will be
operated on double the intended voltage. Damage to the lower power PCA will result.
8. Set the treadmill circuit breaker in the "on" position and check treadmill operation per
Procedure 3.
20077-107
C954, C956 Treadmill
Page 59