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Last reply by 06-24-2022 Unsolved
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Removing and replacing heat sink: sequence of screws

For multiple laptop models, Dell's service manuals say something like this:

Removal
"In sequential order (indicated on the heat sink), loosen the seven captive screws that secure the heat sink to the system board".

Replacement
"Align the seven captive screws on the heat sink with the screw holes on the system board and tighten the screws in sequential order (indicated on the heat sink)."

The sequence is identical. Logically, I would have expected that replacement should tighten screws in reverse sequence from the removal sequence. What's the reason for using the same sequence for each procedure?

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