What this guide covers

Error messages by type

This guide only covers hardware troubleshooting issues common across all platforms.

Error message type	Where this message is displayed	Where to go for information
LEDs	LEDs on various components	Chapter 2, Interpreting LEDs
Boot error messages	System console	Chapter 3, Boot error messages
POST error message	System console	Chapter 3, POST error messages
EMS environmental and other operational messages	LCD display or system console	Chapter 4, Interpreting EMS and Operational Error Messages
RLM notifications regarding the system and EMS messages about the RLM	E-mail sent to indicated e-mail address and system console	Chapter 5, Understanding Remote LAN Module messages