JLG 1250AJP Service Manual - Manual (Page 317)

SECTION 4 - BOOM & PLATFORM
3121171 – JLG Lift – 4-77
10. Scroll through the analyzer menu until SERVICE
MODE is displayed. Press the ENTER key.
11. Scroll through the menu until the "MAIN LIFT?" is
displayed as shown below.
12. Press the ENTER key. The control system will per-
form several tests to make sure the machine is in the
proper position. If the axles are not extended or the
turntable is not centered between the rear wheels,
the screen will read:
If the tower boom angle sensors are calibrated and
operating properly, the control system will verify the
tower boom angle readings are less than +5°. If the
tower boom angle is outside the limit, the screen will
read: