v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 3, “Parts listing, Type 4364, 4365, or 4366 server,” on page 15 to determine whichcomponents 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 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 testing the monitor on adifferent server.3. Run the diagnostic programs. If the monitor passes the diagnostic programs,the problem might be a video device driver.4. (Trained service technician only) Replace the system board.The screen is blank. 1. If the server is attached to a KVM switch, bypass the KVM switch to eliminate itas a possible cause of the problem: connect the monitor cable directly to thecorrect connector on the rear of the server.2. Make sure that:v The server is turned on. If there is no power to the server, see “Powerproblems” on page 89.v The monitor cables are connected correctly.v The monitor is turned on and the brightness and contrast controls areadjusted correctly.v Only a single beep sounds 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).3. Make sure that the correct server is controlling the monitor, if applicable.4. Make sure that damaged BIOS code is not affecting the video; see “Recoveringfrom BIOS update failure” on page 103.5. See “Solving undetermined problems” on page 114.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” on page 94).v If the server passes the video diagnostics, the video is good; see “Solvingundetermined problems” on page 114.v (Trained service technician only) If the server fails the video diagnostics,replace the system board.86 IBM System x3250 Types 4364, 4365, and 4366: Problem Determination and Service Guide