REPLACING THE POTENTIOMETER WIRING HARNESS
The dental chair fails to operate. You have isolated the problem to a faulty
potentiometer wiring harness. You must replace it. Refer to figure 3-11.
a. Use the foot switch to raise chair to its maximum height.
b. Disconnect the chair from the building power supply.
c. Disconnect the chair power cord from the base cords.
Figure 3-11. Potentiometer wiring harness installation.