Komatsu PC290LC-6K Operation & Maintenance Manual page 58

11. EXPLANATION OF COMPONENTS
4. POWER MAX./SWIFT SLOW-DOWN SWITCH
During operations, the digging power can be increased and the
speed reduced by a one-touch operation of the knob button /single click
while pushing).
Power max. (power up) lights up:
When the working mode is heavy-duty and general operation mode only,
the power can be increased while the knob button is being pressed. Even
if the knob button continues to be pressed, the increase in power finishes
after approx. 8.5 sec.
Swift slow-down (speed down) lights up:
When the working mode is heavy-duty operation and general operation
mode only, the speed is reduced while the knob button is being pressed.
When the engine is started, the power max. lamp lights up. Each time this
switch on the monitor panel is pressed, the mode is switch.
5. ACTIVE MODE SWITCH (SELECTOR SWITCH)
The active mode is effective for quick leveling operations or deep
digging and loading operations.
Lamp lights up: Active mode is actuated.
Lamp goes out: Active mode is cancelled.
The lamp is off when the engine is started.
If it is turned ON (lights up), it is possible to enter the active mode
from any working mode.
Even when it is turned ON (lights up), the working mode display
does not change. When the lamp goes out, the system returns to the
original working mode.
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