JLG 740AJ Service Manual - Manual (Page 271)

SECTION 4 - BOOM & PLATFORM
3121160 – JLG Lift – 4-55
If the calibration has not been completed suc-
cessfully, the display will automatically change
to:
Repeat step j until the calibration time require-
ment has been satisfied.
DO NOT RAISE THE TOWER BOOM AGAIN DURING CALIBRA-
TION.
k. To correctly complete the calibration process,
fully retract and fully lower the main boom. Once
the machine is in the stowed position, turn off
the machine and disconnect the analyzer.
Calibration Faults
CAL Failed-Chassis Not Level
In the event the turntable tilt switch input is logic low indi-
cating that the machine is not level the UMS calibration
screens shall display this fault.
CAL Failed-UMS Sensor Raw Output Out Of Range
The control system shall display a fault in the event the
raw sensor output is greater then 5° for the UMS sensor.
CAL Failed-Turntable Sensor Raw Output Out Of
Range
The control system shall display a fault in the event the
raw sensor output is greater then 5° for the turntable sen-
sor.
CAL Failed-Calibration Disrupted
If calibration is disrupted, the control system shall display
this fault.
CAL Failed- UMS Sensor Movement Not Detected
The UMS angle has not detected the required amount of
movement during calibration.