JLG 1200SJP Service Maintenance Manual page 454

SECTION 6 - JLG CONTROL SYSTEM
Press Enter. The screen will read:
31. Telescope to the yellow witness mark (controller will be
close - operator must position the pointer to center line
on decal within 0.25" [6 mm]) for Calibration Position 9.
Figure 6-22. Boom Sensor Calibration Position 9
6-78
When the boom is in the proper position, hit Enter. The
screen will read:
When Position 9 calibrating is complete, the screen will
read:
– JLG Lift – 3121142