Universal Serial Bus (USB) port 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 ActionA USB device does not work. 1. Make sure that:v The correct USB device driver is installed.v The operating system supports USB devices.2. Make sure that the USB configuration options are set correctly in the Setuputility (see “Using the Setup utility” on page 197 for more information).3. If you are using a USB hub, disconnect the USB device from the hub andconnect it directly to the server.Video problemsSee “Monitor or video problems” on page 64.Error LEDsThe illustration shows the system-board LEDs. The system board has error LEDsthat will help to locate the source of the error. Run the diagnostic programs to findout the cause of the error (see “Running the diagnostic programs” on page 78).H8 HeartbeatLEDFan 2 error LEDSAS/SATA ControllerError LEDRiser-card 2error LEDMicroprocessor error LEDDIMM 1 - 6error LEDsSystem boarderror LEDStandbypower LEDFan 4error LEDIMM heartbeat error LEDRiser-card 1error LEDHeatsinkOrientationDIMMsDIMMsBattery error LEDFan 5error LEDFan 3 error LEDFan 1 error LED72 IBM System x3250 M3 Types 4251, 4252, and 4261: Problem Determination and Service Guide
