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 or Type 4365 server,” on page 59 to determine which componentsare 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 Action405-xxx-00n Failed Ethernet test on adapter in PCI slot.v For single port, n > 0v For dual port, n > 11. If adapters are installed in both slots on the risercard, run the Configuration/Setup Utility programand select Devices and I/O Ports → SystemMAC Addresses.The failing adapter is the one whose MACaddress in the Ethernet controller informationmatches the MAC address on the diagnosticsscreen where the failure occurs.2. Reseat the Ethernet adapter in the slot.3. Replace the Ethernet adapter in the slot.Recovering from BIOS update failureYou can update the BIOS code by using an external USB diskette drive or by usinga Linux or Windows ® update package (if available). See “Updating the firmware” onpage 107 for information about downloading the files for updating.If power to the server is interrupted while the BIOS code is being updated (flashupdate), or if the primary BIOS page in protected memory otherwise becomesdamaged, the server might not restart correctly or might not display video (novideo). If this happens, use the following procedure to recover:1. Read the safety information that begins on page vii and “Handlingstatic-sensitive devices” on page 66.2. Turn off the server and peripheral devices and disconnect all external cablesand power cords; remove the server from the rack and place it on a flat,static-protective surface; then, remove the cover.3. Locate the boot block recovery jumper (JP4 on the system board) (see“System-board switches and jumpers” on page 7).4. Move the boot block recovery jumper from pins 1 and 2 to pins 2 and 3.5. Replace the server cover.6. Connect the server to the power source, keyboard, monitor, and mouse.7. Insert the BIOS update (flash) diskette into the diskette drive. You candownload a file to create this diskette from http://www.ibm.com/servers/eserver/support/xseries/index.html.8. Turn on the server and the monitor.9. After the update session is completed, turn off the server and monitor.10. Remove the diskette from the diskette drive.11. Disconnect all power cords; then, remove the server cover.12. Return the boot block recovery jumper to pins 1 and 2.13. Reinstall the server cover; then, reconnect all external cables and power cordsand turn on the peripheral devices.14. Turn on the server to restart the operating system.46 IBM System x3250 Types 4364 and 4365: Problem Determination and Service Guide