The system will not shut down when displaying the Diagnostic Error Codes.
Diagnostic Error Codes always supersede any other use of the LED. For instance, on Notebooks, battery codes for Low Battery or Battery
Failure situations will not be displayed when Diagnostic Error Codes are being displayed.
Table 6. Diagnostic LED
Blinking Pattern
Possible Problem Suggested Resolution
Amber White
2 1 CPU failure Replace the 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 Replace the memory module.
2 5 Invalid memory installed Replace the memory module.
2 6 System board/Chipset Error/Clock failure/Gate A20
failure/Super I/O failure/Keyboard controller failure
Replace the system board.
2 7 LCD failure Replace the LCD.
2 8 No power supply to the LCD due to LCD power rail
failure
Replace the system board.
3 1 RTC power failure Replace the CMOS 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 EC ran into power sequencing failure. Flash latest BIOS version. If problem persists,
replace the system board.
3 6 Flash corruption detected by SBIOS Flash latest BIOS version. If problem persists,
replace the system board.
3 7 Timeout waiting on ME to reply to HECI message Flash latest BIOS version. If problem persists,
replace the system board.
Battery status LED
Table 7. Battery status LED
Power Source LED behavior System Power State Battery Charge Level
AC Adapter Solid White S0 0-100%
AC Adapter Solid White S4/S5 < Fully Charged
AC Adapter Off S4/S5 Fully Charged
Battery Amber S0 < = 10%
Battery Off S0 > 10%
Battery Off S4/S5 0-100%
• S0 (ON) — System is turned on.
• S4— The system consumes the least power compared to all other sleep states. The system is almost at an OFF state, expect for a
trickle power. The context data is written to hard drive.
• S5 (OFF)
— The system is in a shutdown state.
Troubleshooting 111
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