JLG 1850SJ Service Manual - Manual (Page 328)

SECTION 6 - JLG CONTROL SYSTEM
6-46 – JLG Lift – 3121619
Sensor #21 - Main Lift Cylinder Pressure Transducer
(1)
This pressure transducer is located on the port block of the
main boom lift cylinder. This is used for the diagnostics of the
lift cylinder.
6.7 SYSTEM TEST
The Control System Incorporates a built-in system test to
check the system components and functions. To use this func-
tion, use the following procedures.
Test from the Platform
1. Position the Platform/Ground select switch to the Plat-
form position.
2. Pull out the Emergency Stop switch at the Ground Con-
trol Station.
3. Plug the analyzer into the connector at the base of the
platform control box.
4. Before proceeding, ensure that the switches on the plat-
form console are in the following positions:
a. Drive speed switch is in the Middle position. (Turtle
Icon)
b. 4WS switch is in the Middle position. (2WS mode)
c. Capacity select switch in the 1000 lb. (450 kg) mode.
d. Function speed potentiometer out of creep mode
switch.
e. Generator (if equipped) switched to the off position.
f. Head and Tail lights (if equipped) switched to the off
position.