HP ProDesk 400 G7 Maintenance and Service Guide - Page 47

Heat sink, Remove the access panel

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2. Remove the fan shroud (2). To install the fan shroud, reverse the removal procedures. 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. 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 21). 2. Remove the access panel (Access panel on page 21). 3. Remove the optical drive (Optical drive on page 22). 4. Remove the fan shroud (Fan shroud on page 38). Remove the heat sink: 1. Disconnect the fan cable (1) from the system board. ENWW Heat sink 39

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2.
Remove the fan shroud
(2)
.
To install the fan shroud, reverse the removal procedures.
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.
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
21
).
2.
Remove the access panel (
Access panel
on page
21
).
3.
Remove the optical drive (
Optical drive
on page
22
).
4.
Remove the fan shroud (
Fan shroud
on page
38
).
Remove the heat sink:
1.
Disconnect the fan cable
(1)
from the system board.
ENWW
Heat sink
39