JLG 1500SJ Operation And Safety Manual page 130

SECTION 5 - LCD DISPLAY PANEL - GENERATION 1 & 2
Yellow Circle Indicates that Control Switch can be Applied in Either
Yellow Half-Circle Indicates that Control Switch can be Applied in Only
Direction to Correct the Fault Condition
One Direction to Correct the Fault Condition
Icon Representing
Yellow Segments
Envelope
Indicate Directions
Violation Fault
that Joystick can be
Note: The side of
Applied to Correct the
the envelope
Fault Condition
being violated
will be illuminated
No Serviceable
Faults Present
Figure 5-17. Forward Envelope Violation Fault Screen
5-30 – JLG Lift – 3121261