Precision 3450 Small Form Factor Service Manual

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System-diagnostic lights

Table 1. Diagnostic LED behaviorThe following table provides the diagnostically led behavior:
Blinking pattern		Problem description	Suggested resolution
Amber	White	Problem description	Suggested resolution
1	2	Unrecoverable SPI Flash Failure	Replace the system board.
2	1	CPU failure	Run the Dell Support Assist/Dell Diagnostics tool. If problem persists, replace the CPU and system board.
2	2	System board failure (included BIOS corruption or ROM error)	Flash latest BIOS version If problem persists, replace the system board.
2	3	No memory/RAM detected	Confirm that the memory module is installed properly. If problem persists, replace the memory module.
2	4	Memory/RAM failure	Reset the memory module. If problem persists, replace the memory module.
2	5	Invalid memory installed	Reset the memory module. If problem persists, replace the memory module.
2	6	System board / Chipset Error / Clock failure / Gate A20 failure / Super I/O failure / Keyboard controller failure	Flash latest BIOS version If problem persists, replace the system board.
3	1	CMOS battery failure	Reset the CMOS battery connection. If problem persists, replace the RTS battery.
3	2	PCI or Video card/chip failure	Replace the system board.
3	3	BIOS Recovery image not found	Flash latest BIOS version If problem persists, replace the system board.
3	4	BIOS Recovery image found but invalid	Flash latest BIOS version If problem persists, replace the system board.
3	5	Power rail failure	EC ran into power sequencing failure. If problem persists, replace the system board.
3	6	SBIOS Flash corruption	Flash corruption detected by SBIOS If problem persists, replace the system board.
3	7	Intel ME (Management Engine) Error	Timeout waiting on ME to reply to HECI message If problem persists, replace the system board.
4	1	Memory DIMM power rail failure	Reset the memory module. If problem persists, replace the memory module.
4	2	CPU Power Cable Connection Issue	Check power supply unit if CPU power cable is connected well. If problem persists, replace the power supply unit and CPU cable.

Table 2. Diagnostic LED behaviorThe following table provides the diagnostically led behavior:
Blinking pattern		Problem description
Amber	White	Problem description
1	2	Unrecoverable SPI Flash Failure
2	1	CPU failure
2	2	System board failure (included BIOS corruption or ROM error)
2	3	No memory/RAM detected
2	4	Memory/RAM failure
2	5	Invalid memory installed
2	6	System board / Chipset Error / Clock failure / Gate A20 failure / Super I/O failure / Keyboard controller failure
3	1	CMOS battery failure
3	2	PCI or Video card/chip failure
3	3	BIOS Recovery image not found
3	4	BIOS Recovery image found but invalid
3	5	Power rail failure
3	6	SBIOS Flash corruption
3	7	Intel ME (Management Engine) Error
4	1	Memory DIMM power rail failure
4	2	CPU Power Cable Connection Issue

Table 3. Diagnostic LED behaviorThe following table provides the diagnostically led behavior:
Blinking pattern		Problem description
Amber	White	Problem description
1	2	Unrecoverable SPI Flash Failure
2	1	CPU failure
2	2	System board failure (included BIOS corruption or ROM error)
2	3	No memory/RAM detected
2	4	Memory/RAM failure
2	5	Invalid memory installed
2	6	System board / Chipset Error / Clock failure / Gate A20 failure / Super I/O failure / Keyboard controller failure
3	1	CMOS battery failure
3	2	PCI or Video card/chip failure
3	3	BIOS Recovery image not found
3	4	BIOS Recovery image found but invalid
3	5	Power rail failure
3	6	SBIOS Flash corruption
3	7	Intel ME (Management Engine) Error
4	2	CPU Power Cable Connection Issue