Dell R420xr owner manual CPU0704 Message, FAN0000 Message, FAN0001 Message, FAN1201 Message

Error Code	Message Information
	Action	1.	Check system and operating system logs for exceptions.
			If no exceptions are found, continue.
		2.	Turn off the system and remove input power for one
			minute.
		3.	Ensure the processor is seated correctly.
		4.	Reapply input power and turn on the system.
		5.	If the issue persists, see Getting Help.
CPU0704	Message	CPU <number> machine check error detected.
	LCD Message	CPU <number> machine check error detected. Power cycle
		system.
	Details	System event log and operating system logs may indicate
		that the exception is external to the processor.
	Action	1.	Check system and operating system logs for exceptions.
			If no exceptions are found, continue.
		2.	Turn off the system and remove input power for one
			minute.
		3.	Ensure the processor is seated correctly.
		4.	Reapply input power and turn on the system.
		5.	If the issue persists, see Getting Help.
FAN0000	Message	Fan <number> RPM is less than the lower warning threshold.
	Details	Fan operating speed is out of range.
	Action	Remove and reinstall the fan. If the issue persists, see Getting
		Help.
FAN0001	Message	Fan <number> RPM is less than the lower critical threshold.
	LCD Message	Fan <number> RPM is outside of range. Check fan.
	Details	Fan operating speed is out of range.
	Action	Remove and reinstall the fan. If the issue persists, see Getting
		Help.
FAN1201	Message	Fan redundancy is lost.
	LCD Message	Fan redundancy is lost. Check fans.
	Details	Fan has failed.
	Action	Remove and reinstall failed fans or install additional fans.

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