5. Disconnect the fan cable from the system board connector labeled CPUFAN (1), and then lift the
heat sink from atop the processor (2).
When reinstalling the fan sink, make sure that its bottom has been cleaned with an alcohol wipe and
fresh thermal grease has been applied to the top of the processor.
CAUTION: Fan sink retaining screws should be tightened in diagonally opposite pairs (as in an X) to
evenly seat the fan sink on the processor to avoid damage that could require replacing the system
board.
Make sure to replace the fan duct. Failure to install the fan duct may cause the computer to overheat.
Processor
Description
Intel Core i7 processor (includes thermal material)
4770, 3.4 GHz, 8-MB L3 cache, 86W
Intel Core i5 processors (include thermal material)
4670, 3.4 GHz, 6-MB L3 cache, 86W
4570, 3.2 GHz, 6-MB L3 cache, 86W
1. Prepare the computer for disassembly (Preparation for disassembly on page 22).
2. Remove the access panel (
Access panel on page 23).
3. Remove the fan duct (
Fan duct on page 52).
4. Remove the fan sink (
Fan sink on page 63).
64 Chapter 5 Removal and replacement procedures: Small Form Factor
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