Cybex Pro+ Treadmill Owner’s & Service Manual
Service
Page 7-24
Lower Control Board
NOTE: You will remove and replace the entire lower bracket in this procedure.
Tools Required
• Phillips head screwdriver
• 3/8” Nutdriver or socket wrench
• ESD (Electro Static Discharge) grounding strap
! WARNING: Disconnect the power cord before beginning this procedure. Keep wet
items away from inside parts of the treadmill. Electrical shock could occur
even if the treadmill is unplugged. Do not touch components on the lower
board. A charge can remain after unplugging the power cord and turning
off the treadmill.
1. Disconnect the external power source.
A. Turn the main power switch on the left side to the off (O) position.
B. Unplug the treadmill from the power outlet.
2. Remove the motor cover.
A. Using a Phillips head screwdriver, loosen three screws on each motor cover side (left
and right). See Figure 2.
B. Lift the motor cover center up and off the treadmill. The screws will stay in place. See
Figure 2.
3. Disconnect the cables from the lower control board and bracket.
A. Pull up on the lower board shield. It will snap out.
B. Disconnect the cables from the lower control board. This includes: the elevation motor
cable; display cable (P1 and P2); AC line 1 (black); AC line 2 (white); drive motor (black
red, yellow) and speed sensor cable.
C. Using a 3/8” nutdriver or socket wrench, remove the one nut and one washer from the
ground wire on the lower control bracket.
4. Remove the line filter.
A. Using a Phillips head screwdriver, remove the two screws that hold the line filter to the
lower control board bracket. NOTE: You should not need to disconnect the cables that
are connected to the line filter.
5. Remove the lower control board bracket.
A. Using a Phillips head screwdriver, remove the four screws that hold the lower control
bracket to the base.
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