Diagnostic LED Codes and Diagnostic Beep Codes for the Latitude 10 and Latitude 10 ST2E

Article Summary: This article contains information regarding diagnostic LED lights and diagnostic beep codes for your Latitude 10 or Latitude 10 ST2E.

Diagnostic LED Codes

Diagnostic LED code communicated via the Power Button LED or agreed upon alternate LED. The Power Button LED shall blink the corresponding LED codes for the corresponding fault condition. Example: No Memory detected, Power Button LED blinks two times followed by a pause, blinks two times, pause, etc. This pattern continues until the system is powered off.

LED Code	Fault Description	Suggested Remedy
1	System Board: BIOS ROM failure	System board, covers BIOS corruption or ROM error
2	Memory	No memory/RAM detected
3	System board failure Chipset Error Clock failure Gate A20 failure Super I/O failure Keyboard controller failure	System board failure
4	Memory	Memory/RAM failure
5	Real-time clock failure	Reseat the CMOS battery connection If the problem persists, possible battery failure or system board failure
6	Video BIOS	Video card/chip failure
7	CPU	Processor failure
8	LCD	LCD failure

Diagnostic Beep Codes

The computer may emit a series of beeps during start-up if the display cannot show errors or problems. These series of beeps, called beep codes, identify various problems. The delay between each beep is 300 ms, the delay between each set of beeps is 3 seconds, and the beep sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if the user presses the power button. If so, BIOS will jump out from looping and execute the normal shutdown process and power system.

Beep Code	Fault Description	Suggested Remedy
1	BIOS ROM checksum in progress or failure	System board failure, covers BIOS corruption or ROM error
2	Memory	No memory/RAM detected
3	Chipset Error (North and South bridge error, DMA/IMR/Timer error) Time-Of-Day Clock test failure Gate A20 failure Super I/O failure Keyboard controller failure	System board failure
4	RAM Read/Write failure	Memory/RAM failure
5	Real-time clock power fail	Reseat the CMOS battery connection If the problem persists, possible battery failure or system board failure
6	Video BIOS Test Failure	Video card/chip failure
7	CPU-cache test failure	Processor failure
8	LCD	LCD failure

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Article ID: SLN290715

Last Date Modified: 06/10/2015 09:41 AM

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