Cybex 750T Treadmill Service Manual
Service
Page 4-14
25. Adjust the running belt tension and tracking.
A. Follow the Tension and Center the Belt procedure located in the Preventive Maintenance chapter
of this manual.
Motor Controller
NOTE: This procedure will cover the motor controller, power cord, on/off switch and line fi lter. Follow this
procedure from step 1 even though the heading for some of these procedures will appear before
the step where you remove that part.
Tools Required
• Phillips screwdriver
• 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 near the motor
controller. 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 front to the off (O) position.
B. Unplug the treadmill from the power outlet.
2. Remove the motor covers.
A. Using a Phillips screwdriver, loosen the seven screws on the front motor cover and each motor
cover side (left and right). See Figure 7.
B. Lift the motor cover up and off the treadmill. The screws will stay in place. See Figure 7.
C. Using a Phillips screwdriver, remove the four screws securing each motor cover side (left and
right). See Figure 8.
D. Using a Phillips screwdriver, remove the five screws securing the front motor cover. See
Figure 9. NOTE: The treadmill will need to be elevated or tipped on it’s side to remove the two
lower screws.
NOTE: Wear an ESD strap for the rest of this procedure.
3. Disconnect the cables from the motor controller.
A. Disconnect the cables from the motor controller. This includes: the power in (INPUT); display
cable (COMM.); elevation cable (INCLINE); drive motor cable (OUTPUT) and resistor (DB). See
Figure 18.
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