Service Manual Instruction Manual

SECTION 6 - JLG CONTROL SYSTEM
6-54 – JLG Lift – 3121171
10. Press ENTER.
11. When prompted, swing turntable 180° to opposite end
of chassis.
12. Press ENTER. The screen should read:
13. Upon completing swing calibration, swing turntable
180° back to the stowed position.
14. Hit ESC twice to go back to CALIBRATIONS.
6.17 BOOM SENSOR CALIBRATION
To begin calibration of the boom sensors, the following condi-
tions must be met:
• Successful completion of the steering sensor and tilt
sensor calibrations
• The axles are completely extended
• The wheels are straight
• The platform is unloaded and booms are clean
• The jib is fully raised
• The jib swing is centered
•The platform is level
• The platform is not rotated
• The turntable is centered between the rear tires
• The tower boom is fully retracted
• The tower boom is fully lowered
• The main boom is fully retracted
• The main boom is fully lowered
• The machine indicates that it is on a level surface
(within ±1.5
•Ground Mode is selected
General Notes:
• During all Control System lag times the analyzer
should display “CALIBRATING…”
• After each “ENTER” input and before the Control
System records sensor values, the Control System will
wait 10 seconds for the boom activity to settle down
before readings are taken.
• During calibration, if the ESC key is pressed after
the calibration procedure is started, the calibration will
be aborted and “CAL FAILED” will be displayed on the
bottom line of the analyzer and the previous calibra-
tion values will be used for the boom sensors. The ana-
lyzer will continue to display “CAL FAILED” and follow
the electrical retrieval system sequence for positions of
backward stability concern until all transport positions
are met or the power is cycled. Refer to Section 4.9,
Electrical Retrieval System.