HP Dc5800 Service Reference Guide: HP Compaq dc5800 Business PC - Page 108

Processor, Preparation for Disassembly, on Computer Access Panel, Heatsink

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Processor 1. Prepare the computer for disassembly (Preparation for Disassembly on page 61). 2. Remove the computer access panel (Computer Access Panel on page 66). 3. Remove the heatsink (Heatsink on page 99). 4. Rotate the locking lever to its full open position (1). 5. Raise and rotate the microprocessor retainer to its fully open position (2). 6. Carefully lift the processor from the socket (3). CAUTION: Do NOT handle the pins in the processor socket. These pins are very fragile and handling them could cause irreparable damage. Once pins are damaged it may be necessary to replace the system board. The heatsink must be installed within 24 hours of installing the processor to prevent damage to the processor's solder connections. To install a new processor: 1. Place the processor in its socket and close the retainer. 2. Secure the locking lever. If reusing the existing heatsink, go to step 3. If using a new heatsink, go to step 5. 3. If reusing the existing heatsink, apply the thermal grease provided in the spares kit to the top of the processor. 4. Clean the bottom of the heatsink with the provided alcohol pad and place it atop the processor. 100 Chapter 7 Removal and Replacement Procedures Microtower (MT) Chassis

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Processor
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
61
).
2.
Remove the computer access panel (
Computer Access Panel
on page
66
).
3.
Remove the heatsink (
Heatsink
on page
99
).
4.
Rotate the locking lever to its full open position (1).
5.
Raise and rotate the microprocessor retainer to its fully open position (2).
6.
Carefully lift the processor from the socket (3).
CAUTION:
Do NOT handle the pins in the processor socket. These pins are very fragile and
handling them could cause irreparable damage. Once pins are damaged it may be necessary to
replace the system board.
The heatsink must be installed within 24 hours of installing the processor to prevent damage to the
processor’s solder connections.
To install a new processor:
1.
Place the processor in its socket and close the retainer.
2.
Secure the locking lever.
If reusing the existing heatsink, go to step 3.
If using a new heatsink, go to step 5.
3.
If reusing the existing heatsink, apply the thermal grease provided in the spares kit to the top of
the processor.
4.
Clean the bottom of the heatsink with the provided alcohol pad and place it atop the processor.
100
Chapter 7
Removal and Replacement Procedures Microtower (MT) Chassis