Heatsink And Processor; Separating The Heatsink-Processor Assembly; Heatsink Cool-Down Time; Heatsink Warm-Up Time - Compaq Evo W8000 Maintenance And Service Manual

4.19 Heatsink and Processor

4.19.1 Separating the Heatsink-Processor Assembly

The following sequential events must take place in order to remove the existing heatsink and
processor assembly:
1. Heat the heatsink-processor assembly to an optimum temperature to break the compound
bonding them together. See the following sections:
❏

"Heatsink Cool-Down Time"

❏

"Heatsink Warm-Up Time"

2. Separate the heatsink from the processor.
3. Release the processor from the processor socket.
Heatsink Cool-Down Time
The heat generated from the processor core transfers to the heatsink making the assembly too
hot to handle. From power-on to power-off, it takes up to 13 minutes to cool the heatsink
sufficiently so that it can be handled comfortably and the compound holding it to the
processor remains pliable.
Heatsink Warm-Up Time
Minimal warm-up time is required to generate enough heat to soften the compound holding
the heatsink to the processor.
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CAUTION: Lifting the heatsink straight up while it is in a cold state can result in damage
to the processor, because it may pull the processor out of the processor socket. If this
should occur, you will need to open the processor socket, by lifting up on the processor
retention lever, before attempting to install the new processor.
From power-off to power-on, see the following steps to warm (but not overheat) the heatsink
so that the heatsink can be handled comfortably, and the compound holding it to the
processor will be pliable.
1. Turn on the workstation and allow the operating system to boot.
2. Shut down the operating system properly, then turn off the workstation and any external
devices.
3. Disconnect the power cord from the grounded AC outlet.
Maintenance & Service Guide
Removal & Replacement Procedures
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