Classification Of And Procedures For Troubleshooting - Komatsu PC130-7 Shop Manual

TROUBLESHOOTING
CLASSIFICATION OF AND PROCEDURES FOR
TROUBLESHOOTING
Classification of troubleshooting
Mode
Code display Troubleshooting when error code is displayed
E-mode Troubleshooting for electric system
H-mode Troubleshooting for hydraulic and mechanical system
S-mode Troubleshooting for engine unit
Procedure for troubleshooting
If a phenomenon looking like a trouble occurs in the machine, select a proper troubleshooting No. according to
the following procedure, and then go to the corresponding troubleshooting section.
1. Procedure for troubleshooting to be taken when user code is displayed on monitor panel:
If a user code is displayed on the monitor panel, display the error code by using the error code display func-
tion of the monitor panel.
Carry out the troubleshooting for the corresponding "Code display" according to the displayed error code.
2. Procedure for troubleshooting when electrical system error code or mechanical system error code
is recorded in error history:
If a user code is not displayed on the monitor panel, check the error code with the error code display func-
tion of the monitor panel.
If the error code is recorded, carry out troubleshooting for the corresponding "Code display" according to
the displayed error code.
a If error codes are recorded, delete all of them and reproduce them, and then see if the trouble is still de-
tected.
a If an error code is still output, the mark of "E" is displayed at the left end of the lower line.
3. Procedure for troubleshooting to be taken when user code is not displayed and error history is not
recorded:
If a user code is not displayed in the monitor panel and an error code is not recorded, 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
related to that phenomenon in the "E mode", "H mode", or "S mode".
PC130-7

CLASSIFICATION OF AND PROCEDURES FOR TROUBLESHOOTING

Contents
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