IBM 86655RY Hardware Maintenance Manual - Page 83

To install a memory module: Before you begin: • Read "Safety information" on page 249. • Read the documentation that comes with your option. 1. Review "Before you begin" on page 60. 2. Turn off the server and all attached devices. Disconnect external cables and power cords and remove the top cover. 3. Pull up the two pop rivets on the processor housing cover and remove the cover from the processor housing. 4. Remove the memory board assembly: a. Lift up on the memory board assembly and remove it from the server. b. Place the memory board assembly on a static-protective surface, such as the static-protective package in which the option came. 5. Locate the DIMM connectors on the memory board. Determine the DIMM connectors into which you will install the DIMMs. (See the notes at the beginning of this procedure.) 6. Touch the static-protective package containing the DIMM option to any unpainted metal surface on the server. Then, remove the DIMM from the package. Note: To avoid breaking the retaining clips or damaging the DIMM connectors, handle the clips gently. 7. To install the DIMMs, repeat the following steps for each DIMM that you install. a. Turn the DIMM so that the pins align correctly with the DIMM connector. b. Insert the DIMM by pressing the DIMM straight into the connector. Be sure that the retaining clips snap into the closed position. 8. Install the memory board assembly: a. Hold the memory board assembly and align it over the memory board connector. b. Insert the memory board assembly into the connector. 9. Install the processor housing cover and push the two pop rivets down to secure the cover. 10. If you have other options to install or remove, do so now; otherwise, go to "Completing the installation" on page 79. Installing a microprocessor kit The server comes with one microprocessor installed on the processor board. If you install an additional microprocessor kit, the server can operate as a symmetric multiprocessing (SMP) server. With SMP, certain operating systems and application programs can distribute the processing load among the microprocessors. Table 8. Microprocessor core frequency selection. Microprocessor speed (MHz) - Core/Bus fraction 550 - 5.5 700 - 7.0 750 - 7.5 J13 Pins 1 and 2 Pins 2 and 3 Pins 2 and 3 Jumper J14 J15 Pins 2 and 3 Pins 2 and 3 Pins 1 and 2 Pins 1 and 2 Pins 2 and 3 Pins 1 and 2 J16 Pins 2 and 3 Pins 2 and 3 Pins 2 and 3 Installing options 73