Dell PowerEdge M1000e Chassis Management Controller Firmware Version 5.1 User’s Guide

Symptom	Issue	Recovery Action
Alert screen message `CMC Not Responding` and LED is blinking amber.	Loss of communication from CMC to the LCD front panel.	Check that CMC is booting; then, reset CMC using GUI or RACADM commands.
Alert screen message `CMC Not Responding` and LED is solid amber or is off.	LCD module communications is stuck during a CMC fail-over or reboots.	Review the hardware log using the GUI or RACADM commands. Look for a message that states: `Can not communicate with LCD controller.` Reseat the LCD module ribbon cable.
Screen text is scrambled.	Defective LCD screen.	Replace the LCD module.
LED and LCD is off.	The LCD cable is not connected properly or is faulty; or the LCD module is faulty.	Review the hardware log using the GUI or RACADM commands. Look for a message that states: `The LCD module cable is not connected, or is improperly connected.` `The control panel cable is not connected, or is improperly connected.` Reseat cables.
LCD screen message `No CMC Found.`	No CMC is present in the chassis.	Insert a CMC into the chassis or reseat existing CMC if present.

LCD Hardware Troubleshooting