Komatsu D31EX-21, Operation & Maintenance Manual, Page: 78 / 256

EXPLANATION OF COMPONENTS
OPERATION
3-26
METHOD OF USING FAULT CODE DISPLAY MODE
NOTICE
The fault items observed by this function are connected with the electronic control, so even if a fault code
is not displayed, there is probably some problem with the machine. If the operator feels any abnormality
with the machine, the machine should be stopped immediately and checked.
When any disconnection or short circuit in any sensor is detected, the location and fault code are displayed by a 6-
digit code on display panel B (multi-information). When contacting your Komatsu distributor, inform your distributor
of the code at the same time.
If the failure observation function has not determined the condi-
tion of the machine, the display is as shown in the diagram on
the right.
With this function, existing failures can be displayed up to a
maximum of 20 items.
If multiple failures are occurring, the display automatically
changes every 2 seconds, so check the code (1).
The display is shown repeatedly.
REMARK
To return to the maintenance mode, operate the buzzer cancel switch to „ .