HP ProDesk 680 G6 PCI Micro Maintenance and Service Guide - Page 53

out of the computer

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IMPORTANT: The bond between the heat sink and the processor can be very tight. If the computer will turn on, before removing the heat sink, turn on the computer until it warms the heat sink. Warming the heat sink loosens the bond between the heat sink and the processor, thereby making it easier to separate them. Make sure not to pull the processor out of the socket when you lift the heat sink, especially if you cannot warm the heat sink before removal. Inadvertently removing the processor can damage the pins. Before removing the heat sink, follow these steps: 1. Prepare the computer for disassembly (Preparation for disassembly on page 23). 2. Remove the access panel (Access panel on page 23). 3. Remove the optical drive (Optical drive on page 24). 4. Remove the front bezel (Front bezel on page 25). 5. Remove the optical drive cage (Optical drive cage on page 26). Remove the heat sink: 1. Disconnect the fan cable (1) from the system board. 2. In the order indicated on the heat sink, loosen the four captive Torx screws (2), and then lift the heat sink out of the computer (3). IMPORTANT: Be sure the loosen the screws in the order indicated by the numbers stamped on the heat sink. IMPORTANT: For optimum thermal performance, be sure not to touch the thermal grease on the surface of the processor or the heat sink. 3. Thoroughly clean the thermal material from the surfaces of the heat sink and the system board components each time the heat sink is removed. Replacement thermal material is included with the heat sink and system board spare part kits. IMPORTANT: Tighten heat sink retaining screws in diagonally opposite pairs (as in an X) to evenly seat the heat sink on the processor to avoid damage that could require replacing the system board. ENWW Heat sink 45

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IMPORTANT:
The bond between the heat sink and the processor can be very tight.
If the computer will turn on, before removing the heat sink, turn on the computer until it warms the heat sink.
Warming the heat sink loosens the bond between the heat sink and the processor, thereby making it easier to
separate them.
Make sure not to pull the processor out of the socket when you lift the heat sink, especially if you cannot warm
the heat sink before removal. Inadvertently removing the processor can damage the pins.
Before removing the heat sink, follow these steps:
1.
Prepare the computer for disassembly (
Preparation for disassembly
on page
23
).
2.
Remove the access panel (
Access panel
on page
23
).
3.
Remove the optical drive (
Optical drive
on page
24
).
4.
Remove the front bezel (
Front bezel
on page
25
).
5.
Remove the optical drive cage (
Optical drive cage
on page
26
).
Remove the heat sink:
1.
Disconnect the fan cable
(1)
from the system board.
2.
In the order indicated on the heat sink, loosen the four captive Torx screws
(2)
, and then lift the heat sink
out of the computer
(3)
.
IMPORTANT:
Be sure the loosen the screws in the order indicated by the numbers stamped on the heat
sink.
IMPORTANT:
For optimum thermal performance, be sure not to touch the thermal grease on the surface
of the processor or the heat sink.
3.
Thoroughly clean the thermal material from the surfaces of the heat sink and the system board
components each time the heat sink is removed. Replacement thermal material is included with the heat
sink and system board spare part kits.
IMPORTANT:
Tighten heat sink retaining screws in diagonally opposite pairs (as in an X) to evenly seat the heat
sink on the processor to avoid damage that could require replacing the system board.
ENWW
Heat sink
45