Microprocessor problemsUse this information to solve microprocessor problems.Table 45. Symptoms and user actions for microprocessor 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 goes directly to thePOST event viewer when it isturned on.1. Check the IMM event log and resolve any errors that have occurred.Monitor and video problemsUse this information to solve monitor and video problems.Some IBM monitors have their own self-tests. If you suspect a problem with yourmonitor, see the documentation that comes with the monitor for instructions fortesting and adjusting the monitor. If you cannot diagnose the problem, call forservice.Table 46. Symptoms and user actions for monitor and video 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 ActionMonitor or video not availableor displays blank/distortedimages.1. Make sure that the monitor cables are firmly connected.2. If the server is attached to a KVM switch, bypass the KVM switch to eliminateit as a possible cause of the problem; connect the monitor cable to the correctconnector on the rear of the server. If the video now works, replace the KVMswitch.3. Replace the standard I/O book.The monitor works when youturn on the server, but thescreen goes blank when youstart some applicationprograms.1. Make sure that:v The application program is not setting a display mode that is higher thanthe capability of the monitor.v You installed the necessary device drivers for the application.v The application requirements for the video are compatible with the videocapabilities of the server.Wrong characters appear on thescreen. 1. Verify that the language and locality settings are correct for the keyboard andoperating system.2. If the wrong language is displayed, update the server firmware to the latestlevel (see “Updating the firmware” on page 121) with the correct language.3. Reseat the monitor cable.Chapter 4. Troubleshooting 187
