IBM 866631Y Hardware Maintenance Manual - Page 153
I/O Legacy Board Verify that connection to Processor/PCI Board is, Board, then the I/O Legacy Board.
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Modem, printer, mouse, or non-IBM devices Each adapter Hard disk drives Memory-Modules (Minimum requirement = 512 MB (4x128 MB DIMMs)) Note: Minimum operating requirements are: a. 1 Power Supply b. Power Backplane c. Processor/PCI Board (with pins 2 and 3 on J23 connected together to bypass the power switch; default is pins 1 and 2) d. I/O Legacy Board (Verify that connection to Processor/PCI Board is secure.) e. 1 Microprocessor and VRM f. 3 Terminator Cards g. Memory Modules (with a minimum of 1 bank of four 128 MB DIMMs (4x128)) 4. Power-on the computer. If the problem remains, suspect the following FRUs in the order listed: Power Supply Power Backplane Processor/PCI Board I/O Legacy Board Notes: 1. If the problem goes away when you remove an adapter from the system, and replacing that adapter does not correct the problem, suspect the Processor/PCI Board, then the I/O Legacy Board. 2. If you suspect a networking problem and all the system tests pass, suspect a network cabling problem external to the system. Symptom-to-FRU index 143
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