Dell Precision 5510 Owner's Manual page 44

Constantly Fatal battery failure with AC adapter present. Fatal battery, replace the battery.
blinking amber
light
Light off Battery in full charge mode with AC adapter present.
White light on Battery in charge mode with AC adapter present.
Diagnostic LED
Occasionally the computer may indicate bicolor flashes on Battery Charge LED. A specific blink pattern, flashing a pattern of
amber, followed by white, and then the same pattern repeats.
NOTE: The diagnostic pattern consists of a two-digit number that is represented by a first group of amber LED blinks (1
through 9), followed by a 1.5-second pause with the LED off, and then a second group of LED blinks (1 through 9) in white.
Followed by a three-second pause, with the LED off, before repeating over again. Each LED blink takes 0.5 s.
The system does not shut down when displaying the Diagnostic Error Codes. Diagnostic Error Codes supersedes any other use
of the LED. For instance, on laptops, battery codes for Low Battery or Battery Failure situations are not displayed when the
Diagnostic Error Codes are being displayed:
Table 11. LED pattern
Blinking Problem Description
pattern
Ambe White
r
2 1 processor
2 2 system board, BIOS ROM
2 3 memory
2 4 memory
2 5 memory
2 6 system board; chipset
2 7 display
3 1 RTC power failure
3 2 PCI/Video
3 3 BIOS recovery 1
3 4 BIOS recovery 2
44 Diagnostics
Suggested Resolution
processor failure
system board, covers BIOS corruption or ROM error
no memory/no RAM detected
memory failure/RAM failure
invalid memory installed
system board/ chipset error
display failure
coin-cell battery failure
PCI/Video card/chip failure
recovery image nor found
recovery image found but invalid