TROUBLESHOOTING METHOD OF USING JUDGEMENT TABLE
20-258
PC58UU-3
1
METHOD OF USING JUDGEMENT TABLE
This judgement table is a tool to determine if the problem with the machine is caused by an abnormality in
the electrical system or by an abnormality in the hydraulic or mechanical system. The symptoms are then
used to decide which troubleshooting table (E-
$$
, H-
$$
) matches the symptoms. The judgement table is
designed so that it is easy to determine from the user code and service code which troubleshooting table to
go to.
★
The abnormality display, warning, given by the monitor panel leads directly to troubleshooting of the
machine monitor (M-
$$
).
(See contents for troubleshooting of the machine monitor system.)
[Method of using judgement table]
•
A • mark is put at the places where the failure mode and self diagnostic display match, so check if that
abnormality display is being given, and proceed as follows.
• If the abnormality diaplay is given, go to troubleshooting code
at the bottom of the judgement table (
%
)......................................................... Go to E-
$$
.
• If the problem has appeared but no abnormality display is given,
go to the troubleshooting code on the right of the judgement table (
&
)....... Go to H-
$$
.
•
For failure modes not marked with •, go directly to the troubleshooting code on the right side (
&
).
Example Failure mode "offset can not be used"
Procedure: Check if the self-diagnostic error code is being displayed on the depth
display portion (side face of controller) of the monitor panel.
Judgement: If error code 41 is being displayed
.............. go to troubleshooting E-5 of electrical system
If no error code is displayed, and the offset mode cannot be used
.............. go to troubleshooting H-14 of hydraulic system
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