Dell 840 manual System board failure See Getting Help on, Appropriate drives installed in your

Table 1-4. Diagnostic Indicator Codes (continued)

Code	Causes	Corrective Action
	Possible USB failure.	See "Troubleshooting a USB Device" on
		page 95.

A B C D

No memory modules	See ""Troubleshooting System Memory" on
detected.	page 100.
A B C D
System board failure.	See "Getting Help" on page 121."
A B C D
Memory configuration	See "Troubleshooting System Memory" on
error.	page 100.
A B C D
Possible system board	See "Getting Help" on page 121."
resource and/or system
board hardware failure.
A B C D
Possible expansion card	See "Troubleshooting Expansion Cards" on
failure.	page 108.
A B C D
Other failure.	Ensure that the diskette drive, optical drive,
	and hard drive(s) are properly connected. See
A B C D	"Troubleshooting Your System" on page 91" for
	the appropriate drive(s) installed in your
	system.
	If the problem persists, see "Getting Help" on
	page 121."
The system is in a normal	Information only.
operating condition after
POST.
A B C D

= y e l l o w

= g r e e n

= o f f

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