HP EliteDesk 800 G6 Maintenance and Service Guide - Page 53

Heat sink

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2. Lift to disengage the board from the system board connector, and then remove the option board from the computer (2). To install the option board, reverse the removal procedure. Heat sink To remove the heat sink, use these procedures. 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. Do not 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 19). 2. Remove the access panel (Access panel on page 19). 3. Depending on model, remove the air duct (Air duct (up to 65 W processor) on page 38 or fan (Fan with air duct (125 W processor) on page 39). Remove the heat sink: 1. Disconnect the fan cable from the system board (1). 2. In the order indicated on the heat sink, loosen the four captive Torx screws (2). Be sure to loosen the screws in the order indicated by the numbers stamped on the heat sink. IMPORTANT: Remove heat sink retaining screws in diagonally opposite pairs (as in an X) to even the downward forces on the processor. The pins on the socket are fragile, and damage to them might require replacing the system board. Heat sink 43

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2.
Lift to disengage the board from the system board connector, and then remove the option board from
the computer
(2)
.
To install the option board, reverse the removal procedure.
Heat sink
To remove the heat sink, use these procedures.
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.
Do not 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
19
).
2.
Remove the access panel (
Access panel
on page
19
).
3.
Depending on model, remove the air duct (
Air duct (up to 65 W processor)
on page
38
or fan (
Fan with air
duct (125 W processor)
on page
39
).
Remove the heat sink:
1.
Disconnect the fan cable from the system board
(1)
.
2.
In the order indicated on the heat sink, loosen the four captive Torx screws
(2)
. Be sure to loosen the
screws in the order indicated by the numbers stamped on the heat sink.
IMPORTANT:
Remove heat sink retaining screws in diagonally opposite pairs (as in an X) to even the
downward forces on the processor. The pins on the socket are fragile, and damage to them might require
replacing the system board.
Heat sink
43