IBM RS6000 Service Guide - Page 117

g. It is possible that another installed adapter is causing the problem. Remove all installed adapters except the one the boot device is attached to, try to boot the standalone diagnostics from a CD-ROM drive attached to the scsi controller on the I/O Board, and run the diagnostics against the system. If this is successful, re-install adapters (and attached devices as applicable) that were removed, one at a time, and run the standalone diagnostics against the system. h. Replace backplane. i. Replace I/O Board. (See notes on 3-1.) 4. If attempting to boot from a Network controller: a. Power Off then On and retry the boot operation b. Verify the network connection (network could be down) c. Verify that IP parameters are correct d. Try to "Ping" the target server e. Have network administrator verify the server configuration for this client f. Replace network cable g. Replace network adapter (unless trying to boot using the ethernet controller on the I/O Board) h. It is possible that another installed adapter is causing the problem. Remove all installed adapters except the one you are trying to boot, and try to boot the standalone diagnostics from a CD-ROM drive attached to the scsi controller on the I/O Board. If this is successful, run the diagnostics against the system, particularly against the target network boot controller/adapter. If this is successful, re-install adapters (and attached devices as applicable) that were removed, one at a time, and run the diagnostics against the system. If the diagnostics fails, replace the last installed FRU. i. Replace I/O Board (if not replaced in previous step). (See notes on 3-1.) 5. If you replaced the indicated FRUs and the problem is still not corrected, or the above descriptions did not address your particular situation, go to "MAP 1540: Minimum Configuration". Chapter 3. Error Code to FRU Index 3-45