Device Status Lights; Led Error Codes - Dell Vostro 5480 Owner's Manual

Device status lights

Table 6. Device status lights
Turns on when you turn on the computer and blinks when the computer is in a power management mode.
Turns on when the computer reads or writes data.
Turns on steadily or blinks to indicate battery charge status.

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.
Code Cause and Troubleshooting Steps
1 System board: BIOS ROM failure
System board failure, covers BIOS corruption or ROM error
2 Memory
No memory/RAM detected
3 Chipset 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
4 RAM Read/Write failure
Memory failure
5 Real-time clock power fail
CMOS battery failure
6 Video BIOS test failure
Video card failure
7 CPU - cache test failure
Processor failure
8 Display
Display failure
Troubleshooting 35