Monitor problemsSome IBM monitors have their own self-tests. If you suspect a problem with yourmonitor, see the documentation that comes with the monitor for instructions fortesting and adjusting the monitor. If you cannot diagnose the problem, call forservice.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, System x3800 Type 8866,” on page 107 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 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 following components:a. Remote Supervisor Adapter II SlimLine (if one is present)b. I/O board5. Replace the components listed in step 4 one at a time, in the order shown,restarting the server each time.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 47.v The monitor cables are connected correctly.v The monitor is turned on and the brightness and contrast controls areadjusted correctly.v Make sure that no beep codes sounded 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 a BIOS update failure” on page 78.5. Observe the checkpoint LEDs on the I/O board; if the codes are changing, goto the next step. If the codes are not changing, see “Checkpoint codes (trainedservice technicians only)” on page 36.6. See “Solving undetermined problems” on page 104.44 IBM System x3800 Type 8866: Problem Determination and Service Guide
