JLG 740A, Service And Maintenance Manual

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SECTION 4 - BOOM & PLATFORM
3121160 – JLG Lift – 4-53
g. After the main boom has been fully elevated,
press "ENTER" . The analyzer will display
the following:
NOTE: By pressing the left or right arrows in this screen, you
may view the output of each sensor.
h. With the aid of an assistant, pull and hold the red
re-leveling knob on the hydraulic tank while lift-
ing the tower boom. Raise the tower boom six
(6) feet or two (2) meters. After elevating the
t o we r t h e r e q u i r e d di s t a n c e , pr e s s
"ENTER" .
If the upright monitoring system did not detect
adequate sensor activity, the screen will display:
Should you get the above message, verify that
the sensor is installed correctly and verify the
sensor connection to the sensor harness is
secure. Also, ensure the red knob is held fully
open for the required time.
If the calibration is executing properly, you shall
see the following display: