The system board can support either one or two processors. The following procedure is applicable to installation of processor 0 or processor 1. Processor 0 (CPU 0) is located closer to the chassis side panel and processor 1 (CPU 1) is located closer to the DIMM sockets. You must install processor 0 before installing processor 1. Proceed as follows:
Figure 7-37 Processors in Server Chassis
chastop2cpus CPU 0
CPU 1
F R O N T
WARNING! Ensure the system is powered down and all power sources have been disconnected from the server prior to removing or replacing components.
Voltages are present at various locations within the server whenever a DC power source is connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning could result in personal injury or damage to equipment.
CAUTION: Observe all ESD safety precautions while performing processor removal. Failure to follow ESD safety precautions could result in damage to the server.
NOTE: Installation instructions are provided with replacement processors. Read those instructions carefully. Changes in processor design (and installation) may have occurred since this procedure was written. Always follow the instructions provided with a replacement processor.
To replace a processor, follow these steps:
1. If rack-mounted, extend the server out from the rack until it stops. See“Installing Components When the Server Is in a Rack” (page 114).
2. Turn off the system.
3. Disconnect all external cables.
4. Remove the server from the rack and place it on an ESD-protected work surface. See
“Removing the Server From a Rack” (page 115).
5. Remove the chassis top cover. See“Removing and Replacing the Top Cover” (page 123).
6. Remove the processor airflow guide. See“Removing the Processor Airflow Guide” (page 128).
7. Insert the IPF-CPU tool into the processor locking mechanism and rotate it to the unlocked position (Figure 7-38).
Removing and Replacing a System Processor 155
Figure 7-38 Unlocking the Processor Locking Mechanism
Unlocked
Front of Chassis Locked
8. Inspect the pins of the processor you are installing. Verify that processor pins are not bent.
9. Insert the Allen side (hex) of the IPF-CPU tool into the lock access hole that runs down through the edge of the turbo fan heatsink before you place it on the system board. As you place the turbo fan heatsink onto the system board, guide the tool until it connects. With the IPF-CPU tool inserted into the lock access hole, it is easier to place and align the turbo fan heatsink onto the system board.
10. Use the four locator posts on the heatsink and the turbo fan power cable to properly align the fan and processor assembly on the system board. The four locator posts fit into locator
holes on the system board processor mount. Position the turbo fan power cable so that it is located on the side of the heatsink that faces the front of the chassis.
CAUTION: Do not press the processor module into the socket. When properly aligned, the processor pins will seat into the socket. No additional pressure is required. You can damage the pins if too much pressure is applied.
Figure 7-39 Aligning the Processor Module
When properly aligned, the connector of the processor and heatsink
assembly face the rear of the chassis
11. Use the Allen side of the IPF-CPU tool to lock the processor in place on the system board.
To do this, insert the special processor tool into the hole that runs down the side of the heatsink and rotate it clockwise 180 degrees.
CAUTION: Do not rotate the cam on the processor socket too far or you can cause damage to the locking mechanism.
12. Slide the sequencing retainer plate toward the front of the system.
13. Tighten the four captive screws of the heatsink in the order shown inFigure 7-40. Using a criss-cross torquing pattern, alternatively tighten each screw 1/2 turn so as not to completely tighten one screw in before the others. Continue this sequence until the heatsink is secured to the system board.
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Figure 7-40 Securing Heatsink Captive Screws
cpu1noppm3
Screw 2 (Tighten Second
Locator Post
Locator Hole Screw 3
(Tighten Third)
Locator Post
Locator Hole
Screw 1 (not shown) (Tighten First)
Insert IPF-CPU Tool Here
Screw 4
(Tighten Last) 1 4
3 2
Torquing Pattern
14. Connect the power cable for the processor turbo fan to its connector on the system board.
15. Slide the CPU power module on the system board metal mounting bracket so that the power module connector aligns with its connector on the processor.
Figure 7-41 Aligning the Processor Power Module
Front of Chassis
16. Align the two mounting screw holes on the power module with their screw holes on the system board’s metal mounting bracket. Screw in the power module mounting screws (M3 x 23mm long pan T15 crest cup stainless steel, 2 per CPU).
Figure 7-42 Installing the Processor Module Power Pod Mounting Screws
Front of Chassis
17. Connect the processor module turbo fan power cable to the connector on the system board.
Removing and Replacing a System Processor 159
Figure 7-43 Connect the Turbo Fan Cable
Front of Chassis
18. Connect the power module cable to the connector on the system board.
Figure 7-44 Connect the Power Module Cable
Front of Chassis
19. Place the processor airflow guide in position. See“Installing the Processor Airflow Guide”
(page 128).
20. Install the chassis top cover. See“Removing and Replacing the Top Cover” (page 123).
21. If necessary, reinstall the chassis in the rack. See“Inserting the Server Into a Rack” (page 116).
22. Reconnect power and system cables to rear panel connectors.
23. Turn on the system.
24. Run the info cpu command at the EFI Shell prompt to verify that the processor has been installed correctly.