HP zx6000 Processor Upgrade Instructions page 10

Install the New Processor
You must have a processor in socket CPU0 before installing one
in socket CPU1.
1. If you have not already done so, turn off the system,
disconnect all power and external cables and remove the
system cover(s) and remove the old processor.
2. Ensure that the processor locking mechanism is rotated into
the unlocked position.
1
Processor Locking Mechanism
1
2
3. Check to ensure that no processor pin is bent.
2
Unlocked
Locked
2
1