Classification And Troubleshooting Steps - Komatsu Galeo PC800-8 Shop Manual

40 Troubleshooting

Classification and troubleshooting steps

Classification of troubleshooting
Mode
Display of code Troubleshooting by failure code
E-mode Troubleshooting of electrical system
H-mode Troubleshooting of hydraulic and mechanical system
S-mode Troubleshooting of engine
Troubleshooting steps
If a problem that appears to be a failure occurs on the machine, identify the relevant troubleshooting No. by per-
forming the following steps and proceed to the main body of troubleshooting.
1. Procedure for troubleshooting to be taken when action code is displayed on machine monitor:
When action code is displayed on machine monitor, press [ ] switch at panel switch section to display fail-
ure code.
Code for the electrical system, carry out the troubleshooting for the corresponding [Display of code]
according to the displayed failure code.
2. Troubleshooting steps when the electrical system failure code or mechanical system failure code is
recorded in the failure history:
If not calling action code in the machine monitor, check the electrical system failure code or mechanical sys-
tem failure code, using the failure history function of the monitor panel.
If a code is recorded, carry out troubleshooting for the corresponding [Display of code] according to the
recorded code.
a If an electrical system failure code is recorded, delete all the codes and reproduce them, and then see if
the trouble is still detected.
a An error code of the mechanical system cannot be deleted.
3. Procedure for troubleshooting to be taken when action code is not displayed and no failure code is
recorded in abnormality record:
If an action code is not displayed on the machine monitor and no failure code is recorded in the abnormality
record, a trouble that the machine cannot find out by itself may have occurred in the electrical system or
hydraulic and mechanical system.
In this case, check the phenomenon looking like a trouble again and select the same phenomenon from the
table of "Phenomena looking like troubles and troubleshooting Nos.", and then carry out troubleshooting
corresponding to that phenomenon in the "E-mode", "H-mode", or "S-mode".
PC800, 850-8
Contents
SEN00789-02
5