Preparingto Work 3
The following problems may occur when you power up the external lightbars:
Problem Action
Lightbars do not
illuminate
Use the methods described in 3.1.2 Control box power up to check that
the control box has started successfully.
Use the procedure described in 3.3.7 Lightbar brightness to check that
the lightbar brightness is not set too low.
Check the system harness between the control box and the lightbars.
Lightbars flash in the
wrong sequence
The lightbars have probably been installed incorrectly. Consult your site
supervisor.
3.1.2 Control box power up
Observe the control box after the system has powered up.
You should see a guidance screen, softkeys, and optional text items (if configured).
If the machine has one or more 3D sensors installed and configured, the following
items appear:
l A plan view guidance screen.
l The correct machine icon for your machine type.
l A site plan, if the system has a site plan file.
l A design or map, if one was loaded when the system was last powered down.
The following problems may occur when you power up the control box and the
system:
Problem Action
Control box does not start Check that the master disconnect switch and machine power switch
are on.
Check the ignition switched power cable section of the system
harness.
Start-up is interrupted by the “Error loading
avoidance zone” error message
The avoidance zone file is corrupt. Consult your site supervisor.
Start-up completes but the error message
“Some of the required devices are not
responding” appears
A device specified during system configuration is missing or not
connected. Follow the procedure described in
7.3 Running system
diagnostics
.
Start-up completes but the error message
“Check Machine Measurements” appears
The system has detected a discrepancy between a configured
machine measurement, and an observed one, possibly because an
incorrect machine configuration file has been loaded. Consult your site
supervisor.
Start-up completes but the wrong machine
icon appears on the guidance screen
An incorrect machine configuration file has been loaded. Consult your
site supervisor.
GCS900 Grade Control System for Excavators Operator's Manual 47
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