Service and Repair Manual April 2018Boom Components70 ZX®-135/70 Part No. 1279835GT1 Push in the ground controls red EmergencyStop button to the off position. Do not turn thekey switch to the off position.2 Turn the key switch to ground controls.3 Open the ground control box.4 Locate the calibration toggle switch at the topof the ground control box. Activate calibrationmode by moving the toggle switch in the leftdirection.5 Temporarily install a control box door retainingfastener between the door and the box toprevent the control box door from moving thetoggle switch while calibrating the machine.6 Remove the key from the main key switch.Insert the key into the bypass/recovery keyswitch and turn it to the bypass position.7 Note: The angle sensor calibration values willnot be saved correctly unless the key switch isin the bypass position and the calibrationtoggle switch is activated.8 Press and hold the enter button on the groundcontrol panel while pulling out the groundcontrols red Emergency Stop button to the onposition. Hold the enter button forapproximately 5 seconds and then release it.9 Enter sensor calibration mode by pressing thebuttons at the ground controls in the followingsequence: (plus)(enter)(enter)(plus).10 Press the enter or previous button on theLCD screen until DELETE PRIMARY BOOMANGLE SENSOR CALIBRATION isdisplayed.11 Press the plus button to select YES, thenpress the enter button to accept.12 Lower the primary boom to the stowedposition.13 Press the enter or previous button on theLCD SCREEN UNTIL PRIMARY BOOM FULLYLOWERED is displayed.14 Press the plus button to select YES, thenpress the enter button to accept.15 Fully raise the secondary boom until it stops atthe end of the cylinder stroke.16 Fully raise the primary boom until it stops atthe end of the cylinder stroke.17 Press the enter or previous button on theLCD screen until PRIMARY BOOM FULLYRAISED is displayed.18 Press the plus button to select YES, thenpress the enter button to accept.19 Press and hold the engine start button forapproximately 5 seconds to shut off theengine and to save the calibration settings.Note: Do not turn the engine off with the key switchor red Emergency Stop button or all calibrationpoints or values will not be saved.20 Press the enter or previous button on theLCD screen until EXIT is displayed.21 Press the plus button to select YES, thenpress the enter button to accept.
