Genie ZX-135/70 Service Manual page 135

Service Manual
Jib Boom Components
Note: Use the following chart to identify the
description of each LCD screen control button
used in this procedure.
Plus Minus
Digital levels with alternate zero function:
1 Prepare the digital level by placing it vertically
on a known surface that is perpendicular to
gravity. Zero out the level with the alternate
zero function.
Note: When the level is calibrated correctly, it
should read 0° on a vertical surface.
Digital levels without alternate zero function:
Note: If your digital level does not have an
alternate zero function, it will read 90° on a vertical
surface. During calibration, the measured value
will need to be subtracted from 90 degrees to get
the correct number to enter into the system.
2 Raise the jib boom to a slightly less than
horizontal position.
3 Push in the ground controls red Emergency
Stop button to the off position. Do not turn the
key switch to the off position.
4 Open the ground control box.
5 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.
120
Previous Enter
ZX-135/70
6 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.
7 Remove the key from the main key switch.
Insert the key into the service/bypass key
switch and turn it to the service/bypass
position.
Note: The angle sensor calibration values will not
be saved correctly unless the key switch is in the
service/bypass position.
8 Press and hold the enter button on the
ground control panel while pulling out the
ground controls red Emergency Stop button to
the on position. Hold the enter button for
approximately 5 seconds and then release it.
9 Enter sensor calibration mode by pressing the
buttons at the ground controls in the following
sequence: (plus)(enter)(enter)(plus).
10 Press the enter or previous button on the
LCD screen until DELETE JIB LEVEL ANGLE
SENSOR CALIBRATION is displayed.
11 Press the plus button to select YES, then
press the enter button to accept.
12 At the jib level calibration deg 60.0deg screen,
start the engine.
Note: If the system exits out of calibration mode
when the engine is started, repeat step 7 and
continue to step 12.
August 2014
Part No. 218700