PCH heat sink
Heat sink Spare part number
PCH heat sink 725625-001
Before removing the platform controller hub (PCH) heat sink, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 34).
2. Remove the base enclosure (see Base enclosure on page 34).
3. Disconnect the cable from the battery (see Battery on page 36).
Remove the PCH heat sink:
1. Loosen the two captive Phillips screws (1), and then remove the heat sink from the system board (2).
Component replacement procedures 47
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