220 IBM eX5 Implementation Guide6.1 Before you apply power for the first time after shippingBefore you begin populating your server with all of its processors, memory, and PCI adaptersand before you install an operating system, perform the recommendations described in thefollowing sections.6.1.1 Verify that the components are securely installedPerform the following tasks to ensure that all of the electrical components of your server haveproper connectivity: Inspect heat sinks to ensure that they are secure. Verify that dual inline memory modules (DIMMs) are mounted in the correct locations andare fully plugged in with their retain clips in the closed position and the memory cards arein the correct location. Inspect PCIe adapters to ensure that they are securely plugged into their slots. The blueretaining clips for the PCIe adapter can come loose during shipping. Check all of the cable connections on the hard drive backplane and all internal diskcontrollers to ensure that they are properly snapped into place. If a cable can beunplugged from its connector easily by tugging on the cable, plug it back in until it clicks orclips into place.6.1.2 Clear CMOS memoryWhen a server is shipped from one location to another location, you have no idea what theserver has been exposed to. For all you know, it might have been parked next to a largemagnet or electric motor and everything in the server that stores information magnetically,including CMOS memory, has been altered. IBM does not indicate on the shipping carton thatmagnetic material is enclosed because the information is readily recoverable.Booting the server to the F1 system configuration panel and selecting Load Default Settingsrestore the default values for the items that you can change in configuration. These steps donot change the settings of the registers that are used by the Integrated Management Module(IMM) and the Unified Extensible Firmware Interface (UEFI). These registers define thesystem state of the server, and if they become corrupt, they can affect the server in thefollowing ways: Fail to power on Fail to complete the power-on self test (POST) Turn on amber light path diagnostics lights that describe conditions that do not exist Reboot unexpectedly Fail to detect all of the installed CPU, memory, PCIe adapters, or physical disksThese internal registers cannot be modified or restored to the defaults by the F1 systemconfiguration panel; however, they can be restored to the defaults by clearing the CMOSmemory.With ac power removed from the server, you can clear CMOS memory by following thesesteps:1. Remove the top cover of the server.2. Locate the CMOS battery on the right side of the server, behind the disk fans, to the rightof processor 4. See Figure 6-1 on page 221.
