Trimble GCS900 - Power up checks

3 Preparing to Work
3.1 Power up checks
ATTENTION — In cold environments, when you start the machine to warm it up turn on the
control box as well.
When you power up the system to begin work, observe the system’s start-up
sequence to make sure that all components function correctly.
See the following list of basic checks.
Check For more information, see ...
Lightbar power up
3.1.1 Lightbar power up
Control box power up
3.1.2 Control box power up
3.1.1 Lightbar power up
Observe the lightbars during start-up and make sure that the lightbars work
correctly.
To perform the lightbar start-up check:
1.
To turn on the system power, press P on the control box.
2. Immediately observe the pattern of the lightbar LEDs.
The LEDs flash in the following sequence:
LEDs on this lightbar Flash
Cut / fill Bottom to top
Left / right Left to right
In / out (extend / retract) Top to bottom
All Twice, simultaneously
The following problems may occur with internal 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.
46 GCS900 Grade Control System for Excavators Operator's Manual