Table 8. DSA messages (continued)v Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v See Chapter 4, “Parts listing, System x3690 X5 Types 7147, 7148, 7149, and 7192,” on page 249 to determinewhich 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 aTrained service technician.v Go to the IBM support Web site at http://www.ibm.com/supportportal/ to check for technical information,hints, tips, and new device drivers or to submit a request for information.Messagenumber Component Test State Description Action166-909-xxx IMM IMM I 2CTestFailed The IMMindicates afailure in theVPD bus(memoryexpansionmodule BUS 0).1. Turn off the server and disconnect itfrom the power source. You mustdisconnect the server from ac power toreset the IMM.2. After 45 seconds, reconnect the server tothe power source and turn on the server.3. Run the test again.4. Make sure that the DSA code is at thelatest level. For the latest level of DSAcode, go to http://www.ibm.com/support/docview.wss?uid=psg1SERV-DSA.5. Make sure that the IMM firmware is atthe latest level. The installed firmwarelevel is shown in the DSA event log inthe Firmware/VPD section for thiscomponent. For more information, see“Updating the firmware” on page 397.6. Run the test again.7. Turn off the system and disconnect itfrom the power source.8. Reseat the MAX5 memory expansionmodule scalability cables (QPI and EXA).9. Reconnect the system to the powersource and turn on the system.10. Run the test again.11. Turn off the system and disconnect itfrom the power source.12. Reseat the MAX5 memory expansionmodule system-board tray.13. Reconnect the system to the powersource and turn on the system.14. Run the test again.Continued on the next page.118 System x3690 X5 Types 7147, 7148, 7149, and 7192: Problem Determination and Service Guide