Part No. 1268494 S-100 • S-105 • S-120 • S-125 3 - 7March 2017 Section 3 • Repair Procedures7 Locate the ECM circuit board mounted to theinside of the platform control box.Electrocution/burn hazard. Contactwith electrically charged circuitscould result in death or seriousinjury. Remove all rings, watchesand other jewelry.Component damage hazard.Electrostatic discharge (ESD)can damage 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.8 Remove the ECM circuit board mountingfasteners.9 Carefully remove the ECM circuit board fromthe platform control box.How to Remove the MembraneCircuit Board1 Push in the Emergency Stop button to theoff position at both the ground and platformcontrols.2 Remove the platform control box lid retainingfasteners. Open the control box lid.1-1Circuit BoardsNote: When an ECM circuit board is replaced, thejoystick controllers will need to be calibrated. See1-3, How to Calibrate a Joystick Controller.How to Remove the ECMCircuit Board1 Push in the Emergency Stop button to theoff position at both the ground and platformcontrols.2 Remove the platform control box mountingfasteners. Remove the platform control boxfrom the machine.Component damage hazard.Cables can be damaged if theyare kinked or pinched.3 Locate the cables that connect to the bottomof the control box. Number each cable and itslocation at the control box.4 Disconnect the cables from the bottom of theplatform control box.5 Remove the control cable plug retainingfasteners from the bottom of the platformcontrol box.6 Remove the platform control box lid retainingfasteners. Open the control box lid.PLATFORM CONTROLS
