PRE AMP ASSEM. 2N3261 - Caterpillar

Power Up Checks
When you power up the AccuGrade System, observe the systems start-up sequence in order to ensure that all components function correctly.Light Bar Power Up
Observe the light bars during start-up and check that the light bars work correctly.In order to perform the light bar power up, complete the following steps:
Turn on the power to the system with the Display.
Immediately observe the pattern of the LED indicators on the light bars.
The LED indicators on the cut/fill (top) light bar flash in sequence from the bottom to the top.
The LED indicators on the left/right (center) light bar flash in sequence from left to right.
The LED indicators on the in/out (bottom) light bar flash in sequence from top to bottom.
The LED indicators on all light bars flash at the same time, twice.Machine Checks
In order to optimize AccuGrade System accuracy, complete the following checks:
Select a bucket
Check the bucket guidance.
Choose a GPS accuracy mode.Note: Bucket wear is accounted for by remeasuring the bucket periodically.Check The Bucket Guidance
Always check the accuracy of the system before you start work. Compare the coordinates that are shown on the Display with the known 3D coordinates of a survey mark.In order to check accuracy, complete the following steps:
Make sure that the system is using a high accuracy GPS position.
Place the focus point of the bucket tip on the survey mark.
Check that the position that is shown on the Text screen agrees with the known position of the survey mark.This check ensures that the machine is operating with the correct GPS configuration, machine dimensions, and sensor calibrations.Note: Regularly check the accuracy of the system. This helps determine the wear on the bucket tips. Always check the system accuracy after you restore a Display configuration.Display Power Up
Observe the Display after the system has powered up. The Display should show a Status Line, soft keys, and optional text items (if configured). The following items will appear:
The plan view guidance screen
The correct machine icon for your machine type
A site plan, if a data card is inserted, and the card contains a site plan file.
A design, if a data card is inserted, and the card contains the design loaded when the system was last powered down.Work Preparation Checks
In order to optimize AccuGrade System accuracy, complete the following checks:
Machine Settings
Display Brightness
Display Settings
GPS Accuracy Mode
Light bar Tolerances
Excavator Bucket
Vertical Guidance MethodMachine Settings
You must use the correct machine settings for your machine to ensure accurate guidance. In order to restore a machine settings file, refer to Operation and Maintenance