Dell R410 owner manual Diagnostic Lights Optional

Diagnostic Lights (Optional)

The four diagnostic indicator lights on the system front panel display error codes during system startup. Table 1-1 lists the causes and possible corrective actions associated with these codes. A highlighted circle indicates the light is on; a non-highlighted circle indicates the light is off.

NOTE: The diagnostic LEDs are not present when the system is equipped with an LCD display.

Table 1-1. Diagnostic Indicator Codes (Optional)

Code Causes Corrective Action

The system is in a normal off condition or a possible pre-BIOS failure has occurred.

The diagnostic lights are not lit after the system successfully boots to the operating system.

Plug the system into a working electrical outlet and press the power button.

The system is in a normal	Information only.
operating condition after
POST.
BIOS checksum failure	See "Getting Help" on page 167.
detected; system is in
recovery mode.
Possible processor failure. See "Troubleshooting the
	Microprocessors" on page 160.
Memory failure.	See "Troubleshooting System
	Memory" on page 152.
Possible expansion card	See "Troubleshooting Expansion
failure.	Cards" on page 159.
Possible video failure.	See "Getting Help" on page 167.

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