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9.8 MOTOR CONTROL BOARD (MCB) REPLACEMENT
CHAPTER 9: PART REPLACEMENT GUIDE
1) Turn off power and disconnect the cord from the machine.
2) Remove the motor cover as outlined in Section 9.1.
3) Cut any wire ties that are secured to the MCB panel.
4) Disconnect wires from the MCB - five total connections.
5) Remove two MCB mounting screws using a Phillips head screwdriver (Figures A & B).
6) Reverse Steps 1-5 to install a new MCB. Be sure to re-connect the 5 wires removed from the old MCB in Step 4 (Figure C). NOTE: The
speed sensor wire from the motor is no longer used and can be tie strapped to a bracket.
7) Auto Calibration must ALWAYS be run after replacing the MCB (see Section 3.5).
FIGURE A
FIGURE B
FIGURE C
J10 - 8 pin black connector
to the console.
J16 - 2 pin white
connector to the
external fan.
J12 - 6 pin white
connector to the
incline motor.
TB2 - 3 pin connector from
the choke (2 wires) and a
ground (1 wire).
TB1 - 5 pin connector from
the motor.
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