Platform Level Sensor - How To Calibrate The Platform Level Sensor - Terex Genie ZX-135/70 Service Manual

September 2015
2-4
Platform Level Sensor
The platform level sensor is mounted to the side of
the platform rotator. The platform level sensor is
monitored by the control system to maintain a level
platform through boom range of motion. If a
platform level sensor is replaced, it must be
calibrated prior to machine operation.
How to Calibrate the Platform
Level Sensor
Note: Perform this procedure with the machine on
a firm, level surface.
Note: Perform this procedure with the boom in the
stowed position.
Note: Use the following chart to identify the
description of each LCD screen control button used
in this procedure.
Plus Minus
1 Secure a digital level to one of the side railings
of the platform.
2 Start the machine and level the platform to
gravity. Turn the machine off.
3 Open the ground control box.
Part No. 218700
Previous Enter
ZX-135/70
Platform Components
4 Locate the calibration toggle switch at the top
of the ground control box. Activate calibration
mode by moving the toggle switch in the left
direction.
5 Temporarily install a control box door retaining
fastener between the door and the box to
prevent the control box door from moving the
toggle switch while calibrating the machine.
6 Insert the key into the bypass/recovery key
switch and turn it to the bypass position.
Note: The angle sensor calibration values will not
be saved correctly unless the key switch is in the
bypass position and the calibration toggle switch is
activated.
7 Press and hold the enter button on the ground
control panel while turning the key switch to
ground controls. Hold the enter button for
approximately 5 seconds.
8 Enter sensor calibration mode by pressing the
buttons at the ground controls in the following
sequence: (plus)(enter)(enter)(plus).
9 Press the enter or previous button on the
LCD screen until SET PLATFORM LEVEL
SENSOR TO GRAVITY is displayed.
10 Press the plus button to select YES, then
press the enter button to accept.
11 Press the enter or previous button on the
LCD screen until EXIT is displayed.
12 Press the plus button to select YES, then
press the enter button to accept.
13 Remove the fastener that was temporarily
installed. Close the control box door and install
the door retaining fasteners.
Note: When the control box door is closed, the
calibration toggle switch is automatically activated
to exit out of calibration mode.
Service Manual
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