IBM x3655 Service Guide - Page 150
Monitor, problems
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Monitor problems Some IBM monitors have their own self-tests. If you suspect a problem with your monitor, see the documentation that comes with the monitor for instructions for testing and 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 problem is solved. v See Chapter 4, "Parts listing, System x3655, Type 7985," on page 97 to determine which components 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 a trained service technician. Symptom Action Testing the monitor 1. Make sure that the monitor cables are firmly connected. 2. Try using the other video port. 3. Try using a different monitor on the server, or try testing the monitor on a different server. 4. Run the diagnostic programs (see "Running the diagnostic programs" on page 144). If the monitor passes the diagnostic programs, the problem might be a video device driver. 5. Reseat the Remote Supervisor Adapter II SlimLine (if one is installed). 6. Replace the following components one at a time, in the order shown, restarting the server each time: a. Remote Supervisor Adapter II SlimLine (if one is installed) b. (Trained service technician only) System board The screen is blank. 1. If the server is attached to a KVM switch, bypass the KVM switch to eliminate it as a possible cause of the problem: connect the monitor cable directly to the correct 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 "Power problems" on page 135. v The monitor cables are connected correctly. v The monitor is turned on and the brightness and contrast controls are adjusted correctly. v No beep codes sound when the server is turned on. Important: In some memory configurations, the 3-3-3 beep code might sound during POST, followed by a blank monitor screen. If this occurs and the Boot Fail Count option in the Start Options of the Configuration/Setup Utility program is enabled, you must restart the server three times to reset the configuration settings to the default configuration (the memory connector or bank 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 "Recovering the BIOS code" on page 156 for information about recovering from a BIOS failure. 5. See "Solving undetermined problems" on page 177 for information about solving undetermined problems. 132 IBM System x3655 Type 7985: Problem Determination and Service Guide