Komatsu PC200-8M0 Shop Manual page 283

600 Electrical system
Electrical control system
3) Function to control when emergency pump
drive switch is turned on
Even if any abnormality occurs in the controller
q
or sensor, setting emergency pump drive
switch (1) to the "ON" position activates the
machine with an absorption torque approxi-
mately equivalent to that in E mode.
In this case, a constant current flows from the
battery to the EPC valve for PC and therefore,
the oil pressure is sensed by only the EPC
valve for PC.
PC200, 200LC, 220, 220LC-8M0
SEN06123-00
17
10-600