JLG 1500SJ Operator Manual - Manual (Page 151)

SECTION 5 - LCD DISPLAY PANEL - GENERATION 1 & 2
3121261 – JLG Lift – 5-55
Machine Tilted Mode
When the control system senses the chassis is on an excessive
slope, the display will show the Machine Tilted image in the
machine status tray.
Figure 5-39. Machine Tilted Mode Screen