Dell T02G owner manual Beep Codes, LED Error Codes, Code Cause and Troubleshooting Steps

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.

Code Cause and Troubleshooting Steps

1BIOS ROM checksum in progress or failure

System board failure, covers BIOS corruption or ROM error

2No RAM detected No memory detected

3Chipset Error (North and South Bridge Chipset, DMA/IMR/ Timer Error) , Time-Of-Day Clock test failure , Gate A20 failure , Super I/O chip failure , Keyboard controller test failure

System board failure

4RAM Read/Write failure Memory failure

5Real-time clock power fail CMOS battery failure

6Video BIOS test failure Video card failure

7CPU - cache test failure Processor failure

8Display Display failure

LED Error Codes

Diagnostic LED codes are communicated via the Power Button LED. The Power Button LED blinks the corresponding LED codes for the corresponding fault condition. Example: For No Memory detected (LED code 2) , The Power Button LED blinks two times followed by a pause, blinks two times, pause, etc. This pattern continues until the system is powered off.

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