HP dx2290 Service Reference Guide - HP Compaq dx2290 Business PC - Page 60

Processor, Preparation for Disassembly, on Access Panel, Heatsink

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Processor 1. Prepare the computer for disassembly (Preparation for Disassembly on page 26). 2. Remove the access panel (Access Panel on page 28). 3. Lay the computer down on its side for greater stability. 4. Disconnect the heatsink control cable from the system board and remove the heatsink Heatsink on page 51 5. Rotate the locking lever to its full open position (1). 6. Raise and rotate the microprocessor retainer to its full open position (2) 7. 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. CAUTION: 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 6. 3. If reusing the existing heatsink, clean the bottom of the heatsink with the alcohol pad provided in the spares kit. 4. Apply the thermal grease provided in the spares kit to the top of the processor and install the heatsink atop the processor. 52 Chapter 6 Removal and Replacement Procedures Microtower (MT) Chassis

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Processor
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
26
).
2.
Remove the access panel (
Access Panel
on page
28
).
3.
Lay the computer down on its side for greater stability.
4.
Disconnect the heatsink control cable from the system board and remove the heatsink
Heatsink
on page
51
5.
Rotate the locking lever to its full open position (1).
6.
Raise and rotate the microprocessor retainer to its full open position (2)
7.
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.
CAUTION:
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 6.
3.
If reusing the existing heatsink, clean the bottom of the heatsink with the alcohol pad provided in
the spares kit.
4.
Apply the thermal grease provided in the spares kit to the top of the processor and install the
heatsink atop the processor.
52
Chapter 6
Removal and Replacement Procedures Microtower (MT) Chassis