Komatsu GALEO HM350-2 Operation & Maintenance Manual page 66

OPERATION
EXPLANATION OF COMPONENTS
ENGINE OIL PRESSURE CAUTION LAMP
This monitor (6) lights up to warn the operator that the engine
lubricating oil pressure has dropped.
When it lights up, "E03 CHECK RIGHT NOW" is displayed on the
character display, and the engine output is automatically limited.
Stop the machine immediately at a safe place, then stop the engine
and carry out inspection.
The lamp lights up if the engine lubricating oil pressure goes below
the specified value when the engine is running,
If the engine is not running, the lamp does not light up.
RETARDER OIL PRESSURE CAUTION LAMP
This monitor (7) lights up to warn the operator that the brake oil
pressure has dropped.
The central warning lamp and alarm buzzer are not actuated when
the engine is stopped.
If the brake oil pressure is lower than the specified value 30
seconds after the engine has been started, "E03 CHECK RIGHT
NOW" is displayed on the character display, so stop the machine
immediately at a safe place, then stop the engine and carry out
inspection.
TILT CAUTION LAMP
This monitor (8) lights up if the dump body has left its seat when the
rear frame of the machine has tilted beyond the safety range to the
left or right.
Lower the dump body and move the machine to a safe place where
the machine is stable.
MACHINE MONITOR, OPTION SYSTEM CAUTION LAMP
This monitor (9) lights up when a problem has been detected in the
machine monitor or in the system for an installed option.
When it lights up, "E03 CHECK RIGHT NOW" is displayed on the
character display at the same time, so stop the machine
immediately at a safe place, then stop the engine and carry out
inspection.
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