JLG M400 Operator Manual - Manual (Page 48)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-14 – JLG Lift – 3121644
3. System Distress Indicator
The system distress indicator lights to signify
an abnormal condition for the generator
engine (high oil temperature or low oil pres-
sure) or, on all electric machines, an electrical
system fault.
The four likely causes of a system fault are:
a. The seven second enable time has been allowed to
lapse or a function was selected before depressing the
footswitch. The system reads this condition as a fault,
just as it would if the footswitch were jammed in the
depressed position or a function switch were stuck in
the on position. Re-depress the footswitch to power the
controls and extinguish the light.
b. The maximum power limit has been reached and the
machine is not moving. This could happen when the
machine is stuck or when attempting to travel over
rough terrain or on steep grades which exceed the
rated gradeability of the machine. This condition is
comparable to stalling the engine by asking it to pro-
vide more power than it was designed to do.
c. The batteries are nearly depleted, and should be
charged very soon to prevent having the machine stop
at an inconvenient place.
d. There is some other fault in one of the circuits. If so
determine the cause by counting the flash code, a num-
ber of flashes followed by a pause followed by another
number of flashes, and refer to the service manual.
NOTE: The engine will automatically shut down under the following
conditions:
High Engine Oil Temperature
Low Engine Oil Pressure
Engine Overspeed
Generator Overvoltage
4. Drive Orientation Indicator
When the boom is swung beyond the
rear drive tires or further in either direc-
tion, the Drive Orientation indicator will
illuminate when the drive function is
selected. This is a signal for the operator to verify that
the drive control is being operated in the proper direc-
tion (i.e. controls reversed situations).