IBM System x3400 Type 7975 Installation Manual

Also see for System x3400 Type 7973: User guide Problem determination and service guide

Contents

Monitor problemsSome IBM monitors have their own self-tests. If you suspect a problem with yourmonitor, see the information that comes with the monitor for instructions for testingand adjusting the monitor. If you cannot diagnose the problem, call for service.v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See the parts listing in the Problem Determination and Service Guide to determine which components arecustomer 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 atrained service technician.Symptom ActionTesting the monitor 1. Make sure that the monitor cables are firmly connected.2. Try using a different monitor on the server, or try using the monitor that is beingtested on a different server.3. Run the diagnostic programs. If the monitor passes the diagnostic programs,the problem might be a video device driver.4. Reseat the Remote Supervisor Adapter II SlimLine (if one is present).5. Replace the following components one at a time, in the order shown, restartingthe server each time:a. Remote Supervisor Adapter II SlimLine (if one is present)b. (Trained service technician only) System boardThe screen is blank. 1. Make sure that:v The server is turned on. If there is no power to the server, see “Powerproblems” on page 88.v The monitor cables are connected correctly.v The monitor is turned on and the brightness and contrast controls areadjusted correctly.v No beep codes sound when the server is turned on.Important: In some memory configurations, the 3-3-3 beep code might soundduring POST, followed by a blank monitor screen. If this occurs and the BootFail Count option in the Start Options of the Configuration/Setup Utilityprogram is enabled, you must restart the server three times to reset theconfiguration settings to the default configuration (the memory connector orbank of connectors enabled).2. Make sure that the correct server is controlling the monitor, if applicable.3. Make sure that damaged BIOS code is not affecting the video; see “Recoveringfrom a BIOS update failure” in the Problem Determination and Service Guideon the IBM System x3400 Documentation CD.4. See “Solving undetermined problems” in the Problem Determination andService Guide.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 than thecapability of the monitor.v You installed the necessary device drivers for the application.2. Run video diagnostics (see “Running the diagnostic programs” in the ProblemDetermination and Service Guide on the IBM System x3400 DocumentationCD).v If the server passes the video diagnostics, the video is good; see “Solvingundetermined problems” in the Problem Determination and Service Guide.v (Trained service technician only) If the server fails the video diagnostics,replace the system board.Chapter 5. Solving problems 85