HP EliteDesk 800 G5 Maintenance and Service Guide - Page 65

Fan sink, and then loosen the four

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Fan sink IMPORTANT: The bond between the fan sink and the processor may be very tight. If you can power on the computer, before removing the fan sink, turn on the computer until it warms the fan sink. Warming the heat sink lessens the bond between the fan sink and the processor, thereby making separating them easier. Make sure not to pull the processor out of the socket when you lift the fan sink, especially if you cannot warm the fan sink prior to removal. Inadvertently removing the processor can damage the pins. Fan sinks are available for models that use up to a 65 W processor and models that use a 95 W processor. The fan sink is secured atop the processor with four captive Torx screws. 1. Prepare the computer for disassembly (Preparation for disassembly on page 18). 2. Remove the access panel (Access panel on page 19). 3. Remove the air duct (Air duct on page 52). 4. Disconnect the fan cable from the system board connector labeled CPUFAN (1), and then loosen the four captive screws (2) that secure the fan sink to the system board tray. IMPORTANT: Fan sink retaining screws should be removed in diagonally opposite pairs (as in an X) to even the downward forces on the processor. This is especially important as the pins on the socket are very fragile and any damage to them could require replacing the system board. Fan sink 55

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Fan sink
IMPORTANT:
The bond between the fan sink and the processor may be very tight.
If you can power on the computer, before removing the fan sink, turn on the computer until it warms the fan
sink. Warming the heat sink lessens the bond between the fan sink and the processor, thereby making
separating them easier.
Make sure not to pull the processor out of the socket when you lift the fan sink, especially if you cannot warm
the fan sink prior to removal. Inadvertently removing the processor can damage the pins.
Fan sinks are available for models that use up to a 65 W processor and models that use a 95 W processor.
The fan sink is secured atop the processor with four captive Torx screws.
1.
Prepare the computer for disassembly (
Preparation for disassembly
on page
18
).
2.
Remove the access panel (
Access panel
on page
19
).
3.
Remove the air duct (
Air duct
on page
52
).
4.
Disconnect the fan cable from the system board connector labeled CPUFAN
(1)
, and then loosen the four
captive screws
(2)
that secure the fan sink to the system board tray.
IMPORTANT:
Fan sink retaining screws should be removed in diagonally opposite pairs (as in an X) to
even the downward forces on the processor. This is especially important as the pins on the socket are
very fragile and any damage to them could require replacing the system board.
Fan sink
55