JLG 740AJ, Руководство по обслуживанию и ремонту

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SECTION 4 - BOO M & PLATFOR M
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NOTE: By pressing the left or right arrows in this screen, you may
view the output of each sensor.
g. 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 UMS 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:
h. When viewing the above display, press "ENTER"
. The screen will display the following:
i. Lower the tower boom onto the boom stop. Con-
tinue to hold the tower boom down function for an
additional twenty (20) seconds
WITHOUT RELEAS-
ING THE FUNCTION SWITCH . The calibration must
recognize continuous activation of the tower down
function switch for the required time.
After the required activation time has passed,