UNEXPECTED PCU RESET

What does 409 mean?

The PCU processor was unexpectedly reset.

• Incorrect PCU software and revision level.
• Problem with main circuit card hardware.
• External noise interference.
• Improper equipment and signal grounding connections.

Click steps to track your progress.

1. 1

   Verify that the correct PCU software and revision level are being used.

2. 2

   Inspect for external noise interference sources.

3. 3

   Ensure equipment and signal grounding connections are proper.

4. 4

   If the problem remains, replace the Drive Control PCB.