JLG 723A Operator Manual - Manual (Page 43)

Section 3 - Controls and Indicators
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16. Engine Fault Critical Indicator: Illuminates and buzzer sounds when a critical
engine fault exists.
17. Engine Fault Warning Indicator: Illuminates and buzzer sounds when engine is
operating outside the normal range.
18. Air Filter Restriction Indicator: Illuminates and buzzer sounds briefly when air
filter(s) require maintenance.
19. Engine Oil Pressure Indicator: Illuminates and buzzer sounds when engine oil
pressure is too low.
20. Battery Charge Indicator: Illuminates when battery is at low charge or charging
system is not functioning properly.
21. Trailer Park Brake Indicator: Illuminates when trailer park brake is applied.
22. Steering Pressure Indicator: Illuminates and buzzer sounds when steering
pressure is too low.
23. Hydraulic Filter Restriction Indicator: Illuminates and buzzer sounds briefly
when hydraulic filter requires maintenance.
Note: All indicators (except high beam and turn signals) perform a bulb check at
system start up.
NOTICE
EQUIPMENT DAMAGE. When the engine fault, system distress or a red
indicator illuminates (except park brake), immediately bring machine to a stop,
lower boom and attachment to ground and stop the engine. Determine cause and
correct before continued use.