JLG 1200SJP Service Maintenance Manual page 453

When Position 7 Calibrating is complete, the screen will
read:
Press Enter. The screen will read:
3121142
30. Lift until the function stops (controller will stop at 5
degrees above horizontal) for Calibration Position 8.
Figure 6-21. Boom Sensor Calibration Position 8
When the machine is in the proper position, hit Enter.
The screen will read:
– JLG Lift –
SECTION 6 - JLG CONTROL SYSTEM
6-77