Part No. 72972 Genie GS-2046 and GS-2646 and GS-3246 4 - 3June 2003 Section 4 • Repair ProceduresREV B1-1Circuit BoardsHow to Remove the PlatformControls Circuit Board1 Push in the Emergency Stop button to the offposition at both the ground and platformcontrols.2 Loosen the platform control box lid retainingfasteners. Open the control box lid.3 Locate the circuit board mounted to the insideof the platform control box lid.Electrocution hazard. Contact withelectrically charged circuits couldresult in death or serious injury.Remove all rings, watches andother jewelry.Component damage hazard.Electrostatic discharge (ESD) candamage printed circuit boardcomponents. Maintain firm contactwith a metal part of the machinethat is grounded at all times whenhandling printed circuit boards ORuse a grounded wrist strap.4 Carefully disconnect the three wire harnessconnectors from the platform controls circuitboard.5 Carefully remove the platform controls circuitboard retaining fasteners.6 Carefully remove the platform controls circuitboard from the platform control box lid.1-2Joystick ControllerMaintaining the joystick at the proper setting isessential to safe machine operation. The joystickshould operate smoothly over its entire range ofmotion.A Hall-effect joystick controller was incorporatedinto the platform controls after serial number48054. It does not require any calibration.How to Calibrate the JoystickController(before serial number 48055)This procedure applies onlyto models with apotentiometer-equipped joystick.1 Turn the key switch to platform controls and pullout the Emergency Stop button to the onposition at both the ground and platformcontrols.2 Remove the platform control box lid retainingfasteners. Open the control box lid.Electrocution hazard. Contact withelectrically charged circuits couldresult in death or serious injury.Remove all rings, watches andother jewelry.PLATFORM CONTROLS800-610-4101ActionRental.com