JLG 740AJ, Service And Maintenance Manual

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SECTION 4 - BOO M & PLATFOR M
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g. After the main boom has been fully elevated, press
"ENTER" . The analyzer will display the follow-
ing:
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 lifting the
tower boom. Raise the tower boom six (6) feet or
two (2) meters. After elevating the tower the
required distance, press "ENTER" .
If the upright monitoring system did not detect ade-
quate 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: