Table 48. Symptoms and user actions for problems that you observer that are not normal (continued)v 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 - Jet orfast-moving air noise. 1. Check the IMM event log for events associated with thermals, cooling, andfans.Power supply - Clicking orrattling 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 may becoming from the cooling fans.Fans - Squealing, scratching, orgrinding noise. 1. This server has redundant hot-swap cooling. Remove and replace each fanassembly, one at a time, to determine which assembly is causing the noise.2. If a single fan assembly is identified as causing the problem, complete thefollowing steps:a. Make sure that the fan assembly causing the noise does not have anobstruction (cable, cable label, etc) touching the fan blades duringoperation.b. Replace the fan assembly.3. If the noise can not be associated with a single fan assembly, it might becoming from the cooling fans in a power supply.Fans - Jet or fast moving airnoise. 1. Check the IMM event log for events associated with thermals, cooling, andfans.Fans - Clicking, or rattlingnoise. 1. This server has redundant hot-swap cooling. Remove and replace each fanassembly, one at a time, to determine which assembly is causing the noise.a. Make sure that the fan assembly causing the noise does not have anobstruction (cable, cable label, etc) touching the fan blades duringoperation.b. Replace the fan assembly.2. If the noise can not be associated with a single fan assembly, it might becoming from the cooling fans in a power supply.Visible physical damage;Broken, damaged, ormalfunctioning door, bezel,cover, or chassis part.1. If the part is a CRU, replace it. If the part is a FRU, the part must be replacedby a trained service technician (see Chapter 5, “Parts listing, System x3850 X6and x3950 X6 Types 3837 and 3839,” on page 205 to determine whether thepart is a FRU or a CRU and Chapter 6, “Removing and replacingcomponents,” on page 217.)Chapter 4. Troubleshooting 189
