Fan Sink - HP 280 G4 Maintenance And Service Manual

Fan sink

IMPORTANT:
If the computer will power on, before removing the fan sink, turn on the computer until it warms the fan sink.
Warming the fan sink loosens the bond between the heat 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 before removal. Inadvertently removing the processor can damage the pins.
The fan sink is secured atop the processor with four captive Torx screws. The fan sink includes a heat sink and
a fan.
1. Prepare the computer for disassembly
2. Remove the access panel
3. Remove the fan duct
4. Disconnect the fan cable from the system board (1), and then loosen the four captive Torx screws (2)
that secure the fan sink to the system board tray.
IMPORTANT:
downward forces on the processor. This is especially important as the pins on the socket are very fragile
and any damage to them may require replacing the system board.
5. Lift the heat sink from the processor (3).
To install the fan sink, reverse the removal procedure.
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.
IMPORTANT:
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 can cause the computer to overheat.
The bond between the fan sink and the processor may be very tight.
(Access panel on page
(Fan duct on page
Remove fan sink retaining screws in diagonally opposite pairs (as in an X) to even the
Fan sink retaining screws should be tightened in diagonally opposite pairs (as in an X) to
(Preparation for disassembly on page
18).
32).
16).
Fan sink 33