Dell Latitude E6420 ATG (Early 2011) - Manual (Page 141)

Diagnostics
38
Diagnostic LED Codes
The following table shows the possible LED codes that may display when your
computer is unable to complete a power on self test.
Appearance Description Next Step
Stora
ge
LED
Powe
r LED
Wirel
ess
LED
Blinki
ng
Solid Solid The micro-
controller is
handing control of
the system to the
processor. This
code persists if no
processor is
detected.
Replace the processor.
Solid Blinki
ng
Solid Memory is
detected but has
errors.
1. Re-seat the memory.
2. If two modules are installed,
remove one and test. Try the
other module in the same slot
and test. Test the other slot
with both modules.
3. Replace the memory.
4. Replace the system board.
Blinki
ng
Blinki
ng
Blinki
ng
System board
error
Replace the system board.
Blinki
ng
Blinki
ng
Solid Video card error Replace the system board.
Blinki
ng
Blinki
ng
Off Keyboard error
1. Re-seat the keyboard cable.
2. Replace the keyboard.
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