Dell XPS 14 (L401X, Late 2010) - Manual (Page 80)

80 Processor Fan and Heat-Sink Assembly
8 Remove the keyboard (see "Removing the Keyboard" on page 41).
9 Remove the display assembly (see "Removing the Display Assembly" on
page 53).
10 Follow the instructions from step 13 to step 18 in "Removing the Top
Cover" on page 69.
11 Turn the top-cover assembly over.
12 Disconnect the processor-fan cable from the system-board connector and
turn the top-cover assembly over.
13 Remove the screw that secures the processor fan and heat-sink assembly to
the top cover.
1 processor-fan cable 2 top-cover assembly
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2