Komatsu PC290LC-6K Operation & Maintenance Manual page 145

16.6.4 ELECTRONIC CONTROL SYSTEM
If an error code appears on the machine monitor display (normally displays TIME), follow the countermeasure
table as shown below in the self-diagnosis.
Machine monitor trouble display
Monitor display
EO2
EO3
EO5
CALL
In the case where the monitor will not display
error codes and work equipment operation and
swing operation cannot be carried out.
(*) For detail of operating the pump override switch and the swing override switch, refer to 11.3 "SWITCHES"
Error Mode
PC valve system error
Swing brake
system error
Governor system error
Error indicating that
operation cannot
be continued
Countermeasure
If the pump override switch is set to the ON position,
operation can be carried out. However, immediately
have the PC valve system inspected by your
Komatsu distributor. (*)
Set the swing override switch to the ON position to
release the brake. If applying the swing brake, manu-
ally operate the swing brake using the swing lock
switch. In this case, immediately have the swing
brake system inspected by your Komatsu distributor. (*)
Governor will not execute the control function.
Manually operate the governor-lever. To fix the the
governor lever at the full stroke position, use the
retaining bolt holes on bracket. In this case, immedi-
ately have the governor system inspected by your
Komatsu distributor.
Place the machine in a safe posture, then have it
inspected immediately by your Komatsu distributor.
16. TROUBLESHOOTING
2-101