IBM 884015U Maintenance And Troubleshooting Manual

Contents

Attention: To avoid breaking the retaining clips or damaging the DIMMconnectors, handle the clips gently.b. If the retaining clips are closed, open them; then, insert the DIMM bypressing the DIMM straight into the connector. Make sure that the retainingclips snap into the closed position.Note: If there is a gap between the DIMM and the retaining clips, the DIMMhas not been properly installed. In this case, open the retaining clips andremove the DIMM; then, reinsert the DIMM.7. Install the air baffle over the system board.If you have other options to install or remove, do so now. Otherwise, go to“Completing the installation” on page 39.Installing a microprocessorThe following notes describe the type of microprocessor that the server supportsand other information that you must consider when installing a microprocessor:v The server supports up to two microprocessors. With two microprocessors, theserver can operate as a symmetric multiprocessing (SMP) server. With SMP,certain operating systems and application programs can distribute the processingload between the microprocessors. If the server comes with one microprocessor,you can install a second microprocessor.v You might have to update the BIOS code. Be sure to read the documentationthat comes with the microprocessor, so that you can determine whether you haveto update the BIOS code. You can download the latest level of BIOS code andmany other code updates for your server at http://www.ibm.com/support/.v (Optional) Obtain an SMP-capable operating system. For a list of supportedoperating systems and other options, go to http://www.ibm.com/servers/eserver/serverproven/compat/us/.v To order additional microprocessor options, contact your IBM marketingrepresentative or authorized reseller.v When you install an additional microprocessor in socket J23, you must alsoinstall the voltage regulator module (VRM) that comes with the microprocessor inVRM connector J72.v The microprocessor speeds are automatically set for this server; therefore, youdo not have to set any microprocessor frequency-selection jumpers or switches.v If you have to replace a microprocessor, call for service.v If the thermal-grease protective cover (for example, a plastic cap or tape liner) isremoved from the heat sink or fan sink, do not touch the thermal grease on thebottom of the heat sink or fan sink or set down the heat sink or fan sink.Note: Removing the heat sink or fan sink from the microprocessor destroys theeven distribution of the thermal grease and requires replacing the thermalgrease. Setting down the heat sink or fan sink onto any surface when thethermal-grease protective cover is removed will contaminate the thermal grease.If the thermal grease becomes contaminated with particles, it must be replaced.For information about replacing contaminated thermal grease on the heat sink orfan sink, contact IBM Services. For support phone numbers, go tohttp://www.ibm.com/planetwide/, or in the U.S. and Canada, call 1-800-IBM-SERV(1-800-426-7378).Have the following information ready when you call:– Machine type and model30 xSeries 346 Types 8840 and 1880: Hardware Maintenance Manual and Troubleshooting Guide