HP Dv71270us Service Guide - Page 111
with UMA memory., If it is necessary to replace the heat sink
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3. Remove the heat sink assembly (2). NOTE: Due to the adhesive quality of the thermal material located between the heat sink and system board components, it may be necessary to move the heat sink from side to side to detach the assembly. NOTE: Steps 4 through 6 apply only to computer models equipped with graphics subsystems with UMA memory. 4. If it is necessary to replace the heat sink, loosen the four Phillips PM2.5×10.0 captive screws (1) that secure the heat sink to the system board. 5. Remove the heat sink assembly (2). NOTE: Due to the adhesive quality of the thermal material located between the heat sink and system board components, it may be necessary to move the heat sink from side to side to detach the assembly. Component replacement procedures 103