Dell Latitude E6520 (Early 2011) - Manual (Page 115)

Appearance Description Next Step
4. Replace the system
board.
Blinking Solid Blinking Display panel
error
1. Reseat the display
cable.
2. Replace the display
panel.
3. Replace the video card/
system board.
Off Blinking Blinking Modem error
1. Reseat the modem.
2. Replace the modem.
3. Replace the system
board.
115