HP EliteOne 870 Maintenance and Service Guide - Page 40

Heat sink, Before removing the processor heat sink, follow these steps

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3. Remove the stand bracket (see Stand bracket on page 31). 4. Locate the battery (see System board components on page 42). Remove the battery: 1. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery (1). When the battery pops up, lift it out (2). 2. Slide the replacement battery into position, positive side up. The battery holder automatically secures the battery in the proper position. 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. Be 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 processor heat sink, follow these steps: 1. Prepare the computer for disassembly (see Preparation for disassembly on page 17). 2. Remove the rear cover (see Rear cover on page 18). 3. Remove the stand bracket (see Stand bracket on page 31). Remove the heat sink: 1. In the order indicated on the heat sink, loosen the three captive Torx screws (1). 2. Remove the noncaptive Torx screw (2). Heat sink 33

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3.
Remove the stand bracket (see
Stand bracket
on page
31
).
4.
Locate the battery (see
System board components
on page
42
).
Remove the battery:
1.
To release the battery from its holder, squeeze the metal clamp that extends above one edge of the
battery
(1)
. When the battery pops up, lift it out
(2)
.
2.
Slide the replacement battery into position, positive side up. The battery holder automatically secures
the battery in the proper position.
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.
Be 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 processor heat sink, follow these steps:
1.
Prepare the computer for disassembly (see
Preparation for disassembly
on page
17
).
2.
Remove the rear cover (see
Rear cover
on page
18
).
3.
Remove the stand bracket (see
Stand bracket
on page
31
).
Remove the heat sink:
1.
In the order indicated on the heat sink, loosen the three captive Torx screws
(1)
.
2.
Remove the noncaptive Torx screw
(2)
.
Heat sink
33