Komatsu PC450-8 Operation & Maintenance Manual page 139

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OPERATION
Room Lamp Switch
NOTICE
It is possible to turn on the interior cab room lamp even
when starting switch is in the OFF position, do not forget
to turn it off.
Use this switch (12) to light up the room lamp.
(a) ON position: Lamp lights up
(b) OFF position: Lamp goes out
The room lamp lights up even when the starting switch is at the
OFF position
Emergency Pump Drive Switch
NOTICE
q
This switch is provided to enable you to carry out operation temporarily, when any problem occurs on
the pump control system. Do not use it except in emergency. Furthermore, remove the cause of the
problem immediately.
q
If this switch is depressed and moved to the EMERGENCY position by mistake, thereby engaging the
machine in the work, while the machine is in normal condition, an "E02" mark is shown in the display.
If "E02" is displayed during the work, check that the switch is in the NORMAL position.
This switch (13) is used to make it possible to carry out opera-
tions temporarily if any problem should occur in the pump con-
trol system (when the display shows "E02").
(a) EMERGENCY: When abnormal (move switch up)
(b) NORMAL: When normal (move switch down)
If the display shows "E02", move the switch up to make it possi-
ble to carry out work.
DETAILED CONTROLS AND GAUGES
3-73

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