IBM 8681 Hardware Maintenance Manual - Page 227

Note Addition of the 5th processor automatically requires installation of the second processor daughter card and the cache coherency filter DIMMs as well. Any of these may be the failing FRU if the system fails at this point. If failure occurs when this combination is installed, do the following: 1. Remove the cache coherency filter DIMMs. 2. Remove the first processor daughter board with all its processors. 3. Reboot the system. If the system boots to the IBM logo screen, the one or more of the cache coherency filter DIMMs were the failing FRUs. Replace the pair of DIMMs. If the system does not boot with this combination of processor and processor daughter card, do the following: 1. Swap the processor with one from the first processor daughter card 2. Reboot the system. If the system boots to the IBM logo screen, the processor just removed is the failing FRU. Replace it. If the system does not boot to the IBM logo screen, the processor daughter board is the failing FRU. Replace it. d. Processor terminator cards (one at a time) e. Memory card (maintaining DIMM pairs across the memory cards) f. Memory DIMM (maintaining DIMM pairs across the memory cards) g. System management adapter h. PCI card (one at a time) i. External device (one at a time) 20. Once the failing FRU is identified, power off the system, replace the failing FRU and go to 29 on page 220. 21. If the server boots past the IBM logo, but will not boot to the operating system, do the following: a. Reboot to the configuration/setup utility. b. Use the default configuration c. Exit the configuration/setup utility and reboot the system. d. After the IBM logo screen disappears, watch the video display to see if the boot device is listed during the SCSI polling sequence. Displayed on the screen will be a line of text that says the following: Netfinity 8500R - Type 8681 219