JLG 1500SJ Service Manual - Manual (Page 555)

SECTION 6 - JLG CONTROL SYSTEM
3121262 – JLG Lift – 6-103
Press Enter. The screen will read:
32. Telescope in to green witness mark (controller will
find the position - operator must visually verify the
position).
When the boom is in the proper position, the screen
will read:
Pressing enter will bring up:
Figure 6-30. Boom Sensor Calibration Position 10