JLG 740AJ Service And Maintenance Manual page 327

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IT IS NOT NECESSARY TO CALIBRATE THE TILT SENSOR IN THE GROUND CON-
TROL MODULE AT THIS TIME. HOWEVER, WHEN THE TILT SENSOR IN THE
GROUND CONTROL MODULE IS RECALIBRATED, THE UPRIGHT MONITORING
SYSTEM TILT SENSOR MUST BE RECALIBRATED AS WELL.
d. After selecting "UMS SENSOR", the following screen
will appear:
NOTE: By pressing the left or right arrow keys in this screen, you
may view the output of the sensor.
3121160
SECTION 4 - BOOM & PLATFORM
e. Press "ENTER"
and the next screen will display
the following, asking if the machine is on a level sur-
face:
THE MACHINE MUST BE LEVEL FOR PROPER CALIBRATION.
f. Verify the machine is level and press "ENTER"
The screen will display the following, asking you to
fully elevate the main boom:
.
4-55

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