JLG 1250AJP Service Manual - Manual (Page 479)

SECTION 6 - JLG CONTROL SYSTEM
3121171 – JLG Lift – 6-47
12. If the tower lift wiring and hosing is properly installed
and not damaged, hit enter. The screen will read:
13. If the tower telescope wiring and hosing is properly
installed and not damaged, hit enter. The screen will
read:
14. The control system will next calibrate the LIFT, TWR
LIFT, and TWR TELE valves. This can be confirmed
by watching the LED’s on the respective valves as
they are being calibrated. When the valves are cali-
brated, the screen will read:
NOTE: It may take several minutes per valve section for the
calibration procedure.
15. After completing Boom Valve Calibration, hit ESC
twice to go back to CALIBRATIONS.