HP Xw9300 HP xw9300 Service and Technical Reference Guide - Page 116

CPU Heatsink

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CPU Heatsink The HP Workstation ships with more than one type of heatsink. Use the directions that best match your heatsink. CPU Heatsink A To remove the CPU heatsink: 1. Turn on the workstation and enter Computer Setup (F10) (page 44). Let the workstation run in this mode for five minutes. This action warms the thermal interface material between the CPU heatsink and processor so that the thermal bond loosens and can more easily be broken. CAUTION: If you remove the CPU heatsink while the thermal pad is cold, you could lift the processor out of the socket, even if the socket is closed. This could damage the processor and the processor socket. NOTE: Windows in idle state does not provide sufficient heat to warm the compound. 2. After warming the thermal interface, quickly shut down the system, disconnect power from the system (page 79) and remove the access panel (page 86). 3. Remove the CPU airflow duct by lifting up on the tabs 1 and rotating the duct away 2 from the CPU heatsinks. NOTE: If a memory duct is installed, remove it first. NOTE: The CPU airflow duct is only required when two processors are installed. 116 Removal and Replacement Procedures

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Removal and Replacement Procedures
116
CPU Heatsink
The HP Workstation ships with more than one type of heatsink. Use the directions that best match your
heatsink.
CPU Heatsink A
To remove the CPU heatsink:
1.
Turn on the workstation and enter Computer Setup (F10) (
page 44
). Let the workstation run in this
mode for five minutes.
This action warms the thermal interface material between the CPU heatsink and processor so that the
thermal bond loosens and can more easily be broken.
CAUTION:
If you remove the CPU heatsink while the thermal pad is cold, you could lift the processor out
of the socket, even if the socket is closed. This could damage the processor and the processor socket.
NOTE:
Windows in idle state does not provide sufficient heat to warm the compound.
2.
After warming the thermal interface, quickly shut down the system, disconnect power from the system
(
page 79
) and remove the access panel (
page 86
).
3.
Remove the CPU airflow duct by lifting up on the tabs
1
and rotating the duct away
2
from the CPU
heatsinks.
NOTE:
If a memory duct is installed, remove it first.
NOTE:
The CPU airflow duct is only required when two processors are installed.