Netwok connectivity problemsUse this information to solve network connectivity problems.Table 47. Symptoms and user actions for network connectivity problemsv Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v See Chapter 5, “Parts listing, System x3850 X6 and x3950 X6 Types 3837 and 3839,” on page 205 to determinewhich components are customer replaceable units (CRU) and which components are field replaceable units(FRU).v If an action step is preceded by (Trained service technician only), that step must be performed only by a Trainedservice technician.Symptom ActionThe server will not connect tothe network. 1. If the network adapter is newly installed, verify that it is supported by theserver (see http://www.ibm.com/systems/info/x86servers/serverproven/compat/us/).2. Verify the network adapter slot power state and configuration (see “Using theSetup utility” on page 126).3. Check to make sure that the server is properly connected to the network andthat there is no damage to the network cables.4. Check the firmware device driver.5. Check the Retain Tips for related issues on IBM Support web site athttp://www.ibm.com/supportportal/.The server intermittently loosesconnection. 1. Verify that the network router or switch is operating properly.2. Check to make sure that the server is properly connected to the network.3. Check the firmware device driver.4. Check the Retain Tips for related issues on IBM Support web site athttp://www.ibm.com/supportportal/.Observation problemsUse this information to solve server problems that you observer that are notnormal, such as noises.Table 48. Symptoms and user actions for problems that you observer that are not normalv Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v See Chapter 5, “Parts listing, System x3850 X6 and x3950 X6 Types 3837 and 3839,” on page 205 to determinewhich components are customer replaceable units (CRU) and which components are field replaceable units(FRU).v If an action step is preceded by (Trained service technician only), that step must be performed only by a Trainedservice technician.Symptom ActionPower supply - squealing,scratching, or grinding noise. 1. If the server is running redundant power, pull and replace each power supply,one at a time, to determine which power supply is causing the noise.2. If a single power supply is identified as causing the problem, complete thefollowing steps:a. Make sure that the power supply causing the noise does not have anobstruction (cable, cable label, etc).b. Replace the power supply.3. If the noise can not be associated with a single power supply, it might becoming from the cooling fans.188 System x3850 X6 and x3950 X6 Types 3837 and 3839: Installation and Service Guide
