Dell Latitude E6520 (Early 2011) User Manual
Page 114

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Description
Next Step
handing control
of the system to
the processor.
This code
persists if no
processor is
detected.
Solid
Blinking
Solid
Memory is
detected but
has errors.
1. Reseat 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.
Blinking Blinking Blinking System board
error
Replace the system board.
Blinking Blinking
Solid
Video card
error
Replace the system board.
Blinking Blinking
Off
Keyboard error
1. Reseat the keboard
cable.
2. Replace the keyboard.
Blinking
Off
Blinking USB controller
error
Unplug the USB device (if
any)
Solid
Blinking Blinking No SODIMMs
are installed.
1. Install supported
memory modules.
2. If memory is already
present, reseat the
module(s) one at a time
in each slot.
3. Try known good
memory from another
computer or replace the
memory.
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