Service and Repair Manual April 2018Ground Controls80 ZX®-135/70 Part No. 1279835GTHow to Remove the ALC-1000Circuit BoardNote: If the ALC-1000 circuit board (TCON) hasbeen replaced, the entire machine must becalibrated in a specific order. Refer to RepairProcedure, Full Machine Calibration.1 Push in the red Emergency Stop button to theoff position at both the ground and platformcontrols.2 Remove the ground control box lid fasteners.3 Open the ground control box.4 Tag and disconnect the harnesses from theground control box.5 Remove the control cable receptacle retainingfasteners from the side of the control box.6 Attach a grounded wrist strap to the groundscrew inside the control box.Electrocution/burn hazard.Contact with electrically chargedcircuits could result in death orserious injury. Remove all rings,watches and other jewelry.Component damage hazard.Electrostatic discharge (ESD)can damage printed circuit boardcomponents. Maintain firmcontact with a metal part of themachine that is grounded at alltimes when handling printedcircuit boards OR use agrounded wrist strap.7 Tag and carefully disconnect the wireconnectors from the circuit board.8 Carefully disconnect the LCD circuit boardribbon cable from the ECM circuit board.9 Carefully disconnect the two ribbon cablesfrom the membrane decal at the ECM circuitboard.10 Remove the circuit board mounting fasteners.11 Carefully remove the circuit board from thecontrol box.
