HP Workstation x4000 hp workstation x4000 - service handbook - Page 13

CAUTION CAUTION HP x4000 Service Information Replacing or Upgrading a Processor Replacing or Upgrading a Processor The x4000 Workstation can have two processors. The processors must be identical. If you are upgrading your current processor, you must update the BIOS. The latest BIOS is located at www.hp.com/workstations/support. If you are adding a second processor, you must update your operating system (see "Updating Your Operating System" on page 16). Removing a Processor Before removing your processor, turn on the Workstation and let it run for 3 to 5 minutes. This warms up the processor and makes it easier to detach the heatsink. Be very careful when removing the heatsink. If your processor turbo cooler fan is not operating, the heatsink may be very hot. Under normal circumstances, the turbo cooler fan is operational and a slight twist of the heatsink should release it from the processor. To remove a processor: 1. Turn off the display and shut down the Workstation. Disconnect all power cables and any LAN or telecommunications cables. 2. Remove the Workstation's cover. 3. Place the Workstation on its side for better access. 4. Open the hard disk drive cage. 5. Remove the Chassis Beam Assembly. 6. Remove the MEC card. 7. Remove the heatsink power connector from the system board. Chapter 1 13