Battery Status Lights - Dell Latitude 7280 Owner's Manual

NOTE: The position of the power status light may vary depending on the system.
The following table lists how to read the LED codes when possible errors occur.
Table 2. Battery charge LED indicator
Amber blinking pattern
2,1
2,2
2,3
2,4
2,5
2,6
2,7
3,1
3,2
3,3
3,4
The blinking patterns will consist of 2 set of numbers being represented by (First Group: Amber blinks, Second Group: White blinks)
NOTE:
1 First Group: The LED blinks 1 to 9 times followed by a brief pause with LED off at the interval of 1.5 seconds.(This is in Amber
color)
2 Second Group: The LED blinks 1 to 9 times, that would be then followed by a longer pause before the next cycle starts again at
the interval of 1.5 seconds.(This is in White color)
For Example: No Memory detected (2,3), Battery LED blinks two times of amber color followed by a pause, and then blinks three times of
white color. The Battery LED will pause for 3 seconds before the next cycle repeat itself again.

Battery status lights

If the computer is connected to an electrical outlet, the battery light operates as follows:
Alternately blinking An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop.
amber light and
white light
Alternately blinking Temporary battery failure with AC adapter present.
amber light with
steady white light
Constantly blinking Fatal battery failure with AC adapter present.
amber light
Light off Battery in full charge mode with AC adapter present.
White light on Battery in charge mode with AC adapter present.
Problem description
CPU
System board: BIOS ROM
Memory
Memory
Memory
System board: Chipset
LCD
RTC Power Failure
PCI/Video
BIOS Recovery 1
BIOS Recovery 2
Suggested resolution
CPU failure
System board, covers BIOS corruption or ROM error
No memory/RAM detected
Memory/RAM failure
Invalid memory installed
System board/Chipset error
Replace the system board
CMOS battery failure
PCI or video card/chip failure
Recovery image not found
Recovery image found but invalid
Diagnostics 61