IBM 86645RY Hardware Maintenance Manual - Page 23

Netfinity 5600 - Type 8664 15 Table 1 (Page 2 of 5). Light path diagnostics System Error LED (information LED panel) Lit diagnostics panel LED PCI BUS A Cause An error occurred on PCI bus A. An adapter in PCI slot 1 or 2 or the system board caused the error. PCI BUS B An error occurred on PCI bus B. An adapter in PCI slot 3, 4, or 5 or the system board caused the error. Action 1. Check the error log for additional information. If the error log indicates a problem with the integrated Ethernet controller, replace the system board. 2. If you cannot isolate the failing adapter from the information in the error log, try to determine the failing adapter by removing one adapter at a time from PCI bus A (PCI slot 1 and 2) and restarting the server after each adapter is removed. 1. Check the error log for additional information. 2. If you cannot correct the problem from the information in the error log, try to determine the failing adapter by removing one adapter at a time from PCI bus B (PCI slots 3-5) and restarting the server after each adapter is removed.