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.Error code Description Action301-xxx-000 Failed keyboard test.Note: After installing a USB keyboard, youmight have to use the Configuration/SetupUtility program to enable keyboardlessoperation and prevent the POST errormessage 301 from being displayed duringstartup.1. Reseat the keyboard cable.2. Replace the following components one at a time,in the order shown, restarting the server eachtime:a. Keyboardb. (Trained service technician only) Systemboard302-xxx-xxx Failed mouse test. 1. Reseat the mouse cable.2. Replace the following components one at a time,in the order shown, restarting the server eachtime:a. Mouseb. (Trained service technician only) Systemboard305-xxx-xxx Failed video monitor test. 1. Reseat the monitor cable.2. Replace the following components one at a time,in the order shown, restarting the server eachtime:a. Monitorb. (Trained service technician only) Systemboard405-199-00n Failed. No good link! Check loopback plugFor single/dual port, n >= 01. Make sure that the loopback plug is a gigabitloopback plug.2. Make sure that the loopback plug is tight in theslot (a green LED flashes on the port).3. On a dual-port server, use two loopback plugs atthe same time, one in each port.4. Replace the loopback plug.405-xxx-000 Failed Ethernet test on Ethernet controller 1. Run the Configuration/Setup Utility program andmake sure that the Ethernet adapter is notdisabled and that the BIOS code is at the latestlevel.2. Reseat the Ethernet adapter.3. Replace the following components one at a time,in the order shown, restarting the server eachtime:a. Ethernet adapterb. (Trained service technician only) Systemboard102 IBM System x3250 Types 4364, 4365, and 4366: Problem Determination and Service Guide