Dell Inspiron N4020 Service Manual - Page 4
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5. Replace the I/O board (see
6. Follow the instructions from
CAUTION:
Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may
result in damage to the computer.
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Replacing the I/O
Board).
step 6
to
step 18
in
Replacing the System
Board.