Power 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 power-control button doesnot work, and the reset buttondoes work (the server does notstart).Note: The power-control buttonwill not function untilapproximately 1 to 3 minutesafter the server has beenconnected to ac power.1. Make sure that the power-control button is working correctly:a. Disconnect the server power cord.b. Reconnect the power cord.c. (Trained service technician only) Reseat the operator information panelcables, and then repeat steps 1a and 1b.v (Trained service technician only) If the server starts, reseat the operatorinformation panel. If the problem remains, replace the operatorinformation panel.v If the server does not start, bypass the power-control button by using theforce power-on jumper (see “Internal LEDs, connectors, and jumpers” onpage 14). If the server starts, reseat the operator information panel. If theproblem remains, replace the operator information panel.2. Make sure that the reset button is working correctly:a. Disconnect the server power cord.b. Reconnect the power cord.3. Make sure that:v The power cords are correctly connected to the server and to a workingelectrical outlet.v The type of memory that is installed is correct.v The DIMMs are fully seated.v The LEDs on the power supply with the Active Energy Manager (AEM)feature do not indicate a problem (see “Power-supply LEDs” on page 75).v (Trained service technician only) The microprocessor is correctly installed.4. Reseat the following components:a. DIMMsb. (Trained service technician only) Power-supply cables to all internalcomponentsc. (Trained service technician only) Power switch connector5. Replace the following components one at a time, in the order shown, restartingthe server each time:a. DIMMsb. Power supplyc. (Trained service technician only) System board6. If you just installed an optional device, remove it, and restart the server. If theserver now starts, you might have installed more devices than the power supplysupports.7. See “Power-supply LEDs” on page 75.8. See “Solving undetermined problems” on page 116.68 IBM System x3250 M3 Types 4251, 4252, and 4261: Problem Determination and Service Guide
