Komatsu PC700LC-11, Operation & Maintenance Manual

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ROOM LAMP SWITCH
NOTICE
If the room lamp is left to be turned on, the batteries may be exhausted. Always turn the switch to OFF
position after using room lamp.
Use room lamp switch to light up the room lamp.
(a) ON position
Lights up
(b) OFF position
OFF
The room lamp lights up even when the starting switch is at
OFF position.
PUMP SECONDARY DRIVE SWITCH
k k
CAUTION
When pump secondary drive switch (1) is being used or
immediately after it is used, the temperature of resistor (2)
under the fuse may become high.
When operating the switch or replacing the fuse, take care
not to touch resistor (2).
NOTICE
• The pump secondary drive switch enables you to per-
form operation temporarily when any problem occurs
on the pump control system. Do not use it except for
emergency. Repair the problem as soon as possible.
• If this switch is moved to “Emergency” position by
mistake while the machine is operating normally,
“L03” appears in the display.
If “L03” is displayed during operation, press switch F5
to check whether the current failure code includes any
of the hydraulic system errors “DXA3KB”, “DXA2KB”,
“DXA3KA” or “DXA2KA”. Then make sure this switch
is set to “Normal” position.
The pump secondary drive switch enables you to perform oper-
ation temporarily when any problem occurs on the pump con-
trol system.
(a) Emergency
When abnormal (switch is set to upper position)
(b) Normal
When normal (switch is set to lower position)
OPERATION EXPLANATION OF COMPONENTS
3-91