JLG 4017 Operator Manual - Manual (Page 37)

Section 2 - Pre-Operation and Controls
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e. Transmission Temperature
Symbol displayed and buzzer sounds when transmission
temperature is too high. Stop engine immediately.
f. Air Filter
Symbol displayed and buzzer sounds when air filter is
clogged. Stop engine immediately.
g. Hydraulic Oil Filter
Symbol displayed when the hydraulic oil filter requires
cleaning. Stop engine immediately.
h. CAN Bus
Symbol displayed when there is a component failure. Stop
engine immediately.
i. Engine Speed Sensor
Symbol displays when engine speed is too low (faulty
engine speed signal). Stop engine immediately.
j. Main Hydraulic Pump Pressure
Symbol displayed when there is low hydraulic oil pressure.
Only emergency steering is available. Stop engine
immediately.
k. Short Circuit Main Control Valve
Symbol displayed and buzzer sounds when voltage to the
main control valve is out of range. Stop engine
immediately.
l. Boom Angle Sensor
Symbol displayed and buzzer sounds when the boom
angle is lower or higher than the allowed value. Retract
and lower boom immediately.
OT0990
OZ0260
OT1030
OZ0270
OZ0250
OZ0290
OZ0310
OZ0340