Genie TZ-50 Service Manual
Also see for TZ-50: Operator's manualServise manualOperator's manualOperator's manual
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Contents
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4 - 48 Genie TZ-50 Part No. 824982September 2014Section 4 • Repair Procedures14-2Drive Control BoxActivating the joystick or a button on the box firstsends a signal to the drive controls circuit board,then to the ground controls and finally the drivemanifold valve coils which ultimately activates thedrive function. The drive/steer functions can onlybe operated when the machine is in the stowedposition and the parking brake set.Over time, it may be necessary to recalibrate thedrive controls. The drive controls printed circuitboard can be adjusted for three different functions:steer left, steer right, and forward/reverse. For eachfunction to operate correctly, two side-by-sidepotentiometers, Threshold and Hi-range, must becarefully adjusted. When accurately calibrated, themachine should steer and drive smoothly.The drive control box consists of a printed circuitboard, Emergency Stop button, joystick and, forANSI models, buttons to operate the outriggers. Allof the components are replaceable.Keeping the drive controls clean and defect free isessential to safe machine operation. For furtherinformation or assistance, consult the GenieIndustries Service Department.How to Remove the Drive CircuitBoard1 Tag and disconnect the drive control wireharness from the ground controls.2 Remove the drive control box from the controlbox mount. Turn the box over and remove thefasteners securing the bottom cover to the box.Remove the cover.3 Locate the 6-pin Deutsch connector between thecircuit board and the 14-wire main cable.Note: The 6-pin connector and wiring originatesfrom the circuit board nearest the B SIDEpotentiometer.Note: On the circuit board side, seven wires areinstalled into the 6-pin connector with two red wiresinstalled into terminal 1.a drive controls circuit boardb 14-wire main cable4 Tag and disconnect the circuit board from the14-wire main cable.Component damage hazard.Electrostatic discharge (ESD) candamage printed circuit boardcomponents. Use a grounded wriststrap at all times when handlingprinted circuit boards.5 Tag and disconnect the joystick from the circuitboard.6 Remove the circuit board mounting fastenersand remove the circuit board from the box.DRIVE COMPONENTS |
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