Dell XPS 14 (L401X, Late 2010) - Manual (Page 81)

Processor Fan and Heat-Sink Assembly 81
14 In sequential order (indicated on the processor heat-sink), loosen the five
captive screws that secure the processor fan and heat-sink assembly to the
system board.
15 Make note of the processor-fan cable routing and carefully lift the
processor fan and heat-sink assembly away from the top-cover assembly.
1 captive screws (5) 2 processor fan and heat-sink
assembly
3 screw
1
2
3