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8.5.4 ELECTRONIC CONTROL SYSTEM
When the user code is shown on the display portion of the machine
monitor, take the respective measure shown in the self-diagnosis
chart below.
[MACHINE MONITORING SYSTEM]
Pump control system error
When emergency pump drive switch is at the up
(emergency) position, normal operations become
possible, but have inspection carried out
immediately. (*)
Move the swing brake cancel switch up to release
the brake. When applying the swing brake,
operate the swing lock switch manually.
Depending on the cause of the problem, it may not
be possible to release it. In any cause, have
inspection carried out immediately. (*)
Engine controller power source error
Engine controller drive system circuit
error (engine stopped)
Have inspection carried out immediately.
Engine controller system error
(out put reduced to protect engine)
Operate machine to a safety posture and have
inspection carried out immediately.
Abnormality in throttle system
Operate machine to a safety posture and have
inspection carried out immediately.
Engine sensor (coolant temperature,
Fuel pressure, Oil pressure) system
error
Operations are possible, but have inspection
carried out immediately.
Operate machine to a safety posture and have
inspection carried out immediately.
(*): For details of handling the emergency pump drive switch and swing brake cancel switch, see
“Operation 2.2 Switches [9] Emergency Pump Drive Switch” and “Operation 2.2 Switches [10] Swing
Parking Brake Release Switch”.