JLG 1200SJP Service Maintenance Manual page 452

SECTION 6 - JLG CONTROL SYSTEM
28. Retract to stop (boom must be fully retracted) for Cali-
bration Position 6.
Figure 6-19. Boom Sensor Calibration Position 6
When the machine is in the proper position, hit Enter.
The screen will read:
6-76
29. Lift down to stop (boom must be on boom rest) for Cali-
bration Position 7.
Figure 6-20. Boom Sensor Calibration Position 7
When the machine is in the proper position, hit Enter.
The screen will read as follows:
– JLG Lift – 3121142