Komatsu PC400LC-5 Operation & Maintenance Manual page 61

11. EXPLANATION OF COMPONENTS
5.
POWER MAX. BUTTON
When the button in the center of the knob of the left work
equipment control lever is being pressed (max.: approx. 8 set), the
maximum power is increased.
6.
HORN BUlTON
When this button is pressed, the horn will sound.
7.
ROOM LAMP SWITCH
When this switch is moved to ON position, room lamp will light.
AE097130
AE097140
AE097150
ON
0
OFF
I
AE081710
2-17