v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 4, “Parts listing, System x3250 M3 Types 4251, 4252, and 4261,” on page 119 to determinewhich components are customer replaceable units (CRU) and which components are field replaceableunits (FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by aTrained service technician.v Go to the IBM support website at http://www.ibm.com/systems/support/ to check for technical information,hints, tips, and new device drivers or to submit a request for information.Symptom ActionThe server does not turn off. 1. Determine whether you are using an Advanced Configuration and PowerInterface (ACPI) or a non-ACPI operating system. If you are using a non-ACPIoperating system, complete the following steps:a. Press Ctrl+Alt+Delete.b. Turn off the server by pressing the power-control button and hold it downfor 5 seconds.c. Restart the server.d. If the server fails POST and the power-control button does not work,disconnect the ac power cord for 20 seconds; then, reconnect the ac powercord and restart the server.2. If the problem remains or if you are using an ACPI-aware operating system,suspect the system board.The server unexpectedly shutsdown, and the LEDs on theoperator information panel arenot lit.See “Solving undetermined problems” on page 116.Serial-device problemsv Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 4, “Parts listing, System x3250 M3 Types 4251, 4252, and 4261,” on page 119 to determinewhich components are customer replaceable units (CRU) and which components are field replaceableunits (FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by aTrained service technician.v Go to the IBM support website at http://www.ibm.com/systems/support/ to check for technical information,hints, tips, and new device drivers or to submit a request for information.Symptom ActionThe number of serial ports thatare identified by the operatingsystem is less than the numberof installed serial ports.1. Make sure that:v Each port is assigned a unique address in the Setup utility and none of theserial ports is disabled.v The serial-port adapter (if one is present) is seated correctly.2. Reseat the serial port adapter.3. Replace the serial port adapter.Chapter 3. Diagnostics 69
