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TROUBLES AND ACTIONS
Problem
Finishing accuracy is poor.
"AUTO" is not displayed on the con-
trol box screen.
The control box does not react to the
pressing of the cut/fill offsets switch.
LED of the back grade mode switch
does not light up when turning the
starting switch to ON position.
The buzzer does not sound when the
back grade mode switch is pressed.
ACTIONS WHEN MESSAGE IS DISPLAYED ON CONTROL BOX
•
If the message is displayed on the control box screen, take actions according to the following table.
•
As for the corrective actions indicated with (*) in the remedy column, always contact your Komatsu distribu-
tor.
•
When the control box is started or restored from abnormality, a message is displayed temporarily until the
system is restored. Wait for a few minutes until the system is restored.
•
If the control box has any abnormality, restart the control box once. Then, check if it recovers to the normal
state.
Control box screen display
Elevation control key
(Left bottom of the main win-
dow)
GPS receiver not
connected !
3-72
Incorrect input of wear amount
Incorrect input of pitch rod length
Stroke end is not reset.
Incorrect setting of the base station,
base point and control point
The machine was turned when ap-
proaching to the base point.
Insufficient receiving state of GNSS
satellite
-
Defective switch, defective wiring
Defective switch, defective wiring
Operation procedure may be wrong.
Defective switch, defective wiring
Slope control key
(Right bottom of the main win-
dow)
IMU sensor not con-
(Red)
nected !
Main causes
Main causes
System is being started. Wait.
(Red)
Defective wiring
Remedy
Input wear amount correctly. For de-
tails, see "METHOD FOR INPUT-
TING WEAR AMOUNT OF BLADE
EDGE AND TRACK SHOE".
Input pitch rod length correctly. For
details, see "INPUT PITCHING ROD
LENGTH".
Perform stroke end reset of cylinder.
For details, see "RESET CYLINDER
STROKE END".
Set them correctly.
Approach by straight travel.
Operate in another time.
Move to the place with open sky.
Check. For details, see "AUTO/
MANUAL SWITCH".
Check, repair. (*)
Check, repair. (*)
Press the back grade mode switch
when the automatic control of blade is
enabled ("AUTO" is displayed on the
control box). For details, see "BACK
GRADE MODE SWITCH".
Check, repair. (*)
Remedy
Check, repair. (*)
OPERATION
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