110 Troubleshooting Your SystemActionCAUTION: Only trained service technicians are authorized to remove the system cover and access any of thecomponents inside the system. Before performing any procedure, see your Product Information Guide forcomplete information about safety precautions, working inside the computer and protecting against electrostaticdischarge.1 Run the appropriate diagnostic test. See "Using Server Administrator Diagnostics" on page 121.2 Open the system. See "Opening the System" on page 48.CAUTION: The cooling fans are hot-pluggable. To maintain proper cooling while the system is on, only replaceone fan at a time.3 Locate the faulty fan indicated by the LCD panel or diagnostic software. For the identification numberof each fan, see Figure 3-5.4 Check the fan connection by removing and reseating the fan in its bracket slot. See "Removing andInstalling a Fan" on page 53.NOTE: Wait 30 seconds for the system to recognize the fan and determine whether it is working properly.5 If the problem is not resolved, install a new fan. See "Removing and Installing a Fan" on page 53.If the replacement fan is working properly, close the system. See "Closing the System" on page 48.If the replacement fan does not operate, see "Getting Help" on page 131.Troubleshooting System MemoryProblem• Faulty memory module.• Faulty system board.• Front-panel status LCD indicates a problem with system memory.ActionCAUTION: Only trained service technicians are authorized to remove the system cover and access any of thecomponents inside the system. Before performing any procedure, see your Product Information Guide for completeinformation about safety precautions, working inside the computer and protecting against electrostatic discharge.1 Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" on page 121.2 Turn on the system and attached peripherals.If an error message does not appear, continue to the next step.If an error messages appears, go to step 11.3 Enter the System Setup program and check the system memory setting. See "Using the System SetupProgram" on page 33.If the amount of memory installed matches the system memory setting, go to step 11.
