Komatsu PC1250-11, Original Instructions Manual

Page: 157 / 452

Swing lock switch is used to lock the upper structure so that it
cannot swing.
(a) ON position
The swing lock is always applied, and the upper structure does
not swing even when the swing is operated. In this condition,
the swing lock pilot lamp lights up.
(b) OFF position
The swing lock is cancelled allowing the upper structure to
swing when operating the swing control lever.
LAMP SWITCH
Lamp switch is used to light up the working lamp and monitor
illumination.
(a) Night position
Lamps light up and monitor illumination is set to night mode.
(b) Day position
Lamps light up and monitor illumination is set to day mode.
(c) OFF position
Lamps go out.
(The monitor illumination is set to day mode.)
HORN SWITCH
Horn switch is located on top of the R.H. work equipment con-
trol lever.
When switch is pressed, the horn sounds.
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.
OPERATION EXPLANATION OF COMPONENTS
3-91