ALTERNATOR GROUP 5L6223 - Caterpillar

Common Problems and Guidelines
This section outlines common problems that occur. The section provides guidelines for the following subjects:
What to look for
What an error message means
How to fix a problemIn most cases, alert messages flash on the screen or the full screen shows a message. Refer to the following information: Operation and Maintenance Manual, SEBU8359, "Flashing Messages" and Operation and Maintenance Manual, SEBU8359, "Full Screen Messages".Common Problems and Solutions
Table 1 describes the possible causes of common problems and suggests possible solutions.
Table 1
Common Problems and Solutions
Problem Cause Solution
A text view does not appear when the Next key is pressed. There is not any information configured to appear on the Text View. Configure the Text View so the information wanted, is shown.
In the text view, "N/A" appears as the value of guidance parameters. No design is loaded. Load a design.
The error estimate limit that was set by the GNSS accuracy mode has been exceeded. Move away from obstructions and make sure that the data radio is working in the diagnostics.
The machine is off the current design. Move onto the current design area.
Failure or incorrect installation status or configuration of one of the following components or wiring: Position Sensing Cylinder Sensor, Inclination Sensor, GNSS Radio, GNSS Receiver. Ensure GNSS Radio, GNSS Receiver, and Implement control module ( A4:M1) report as connected on the "Display" diagnostic menu.
Confirm the inclination sensor is installed and functional by machine pitch/roll values are reporting as a valid value.
Confirm the Position Sensing Cylinder is installed and functional by Blade Cylinder Extend values are reporting as a valid value.
Confirm there are not any fault codes being reported by the machine which could point to the implement control or position sensing cylinder (if equipped). GNSS Status
During periods of low accuracy, the Cat Grade Control system provides alert messages. Table 2 summarizes these messages.
Table 2
GNSS Status Alert Messages
If... Then...
A GNSS position is not available An alert flashes repeatedly in the middle of the current guidance screen. When in the setup menu, GNSS-related alert messages will only appear in the valve speed and valve calibration dialogs.
In plan view, the machine symbol disappears.
In cross-section view, the last available cross-section appears but no blade is shown.
In text view screens, real-time information fields (such as the "Speed" field and the "Heading" field) shows "N/A" (not available). Non-guidance values (such as the "Satellites" field) still appear, if available.
Low accuracy GNSS positions are available An alert flashes repeatedly in the middle of the current guidance screen, "valve speed" dialog or "valve calibration" dialog.
The plan view continues to be updated.
The cross-section view no longer shows the machine blade.
GNSS mode is one of:
- Invalid GNSS Configuration
- No GNSS Data (Right)
- Old Position
V. Low Accuracy (GNSS) Graphical guidance is no longer given. Both the machine and the blade of the machine are hidden and no longer updated in the guidance views. Power Loss
When the power supply to the display is lost, the LCD on the display dims. If power is not restored within seconds, the display turns off.When power is