IBM 86803RU Hardware Maintenance Manual - Page 214
Check the I/O board LEDs, see I/O Board, Check I/O Board Power Supply Power Good
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a) Replace terminator. b) Replace processor. c) Replace processor board. 4. Check the I/O board LEDs, see "I/O Board Component Locations" on page 142. a. Check I/O Board Power Supply Power Good LED. If not on, replace power control card. b. Check Reset LEDs. If on: 1) Replace I/O Function Card. 2) Replace I/O Backplane c. Check PCI slot power LEDs. If adapter is present but power LED is not on: 1) Ensure hot plug switch is closed. 2) Replace adapter. 3) Replace PCI sensor card. 4) Replace I/I board. d. Check PCI bus SERR/PERR LEDs. If on, (error on PCI A, B, or C bus), replace or remove adapters in the appropriate PCI slots. e. Check Secondary PCI SERR/PERR LEDs. If on, (error on secondary bus): 1) Replace I/O Function card. 2) Replace system management card. f. Check NMI LED. If on: 1) Replace I/O Board. 2) Replace processor. 3) Replace processor board. 5. Check Memory Card error LEDs. If any error LED is on: a. Replace the DIMM for that LED. b. Replace the memory card for that LED. 6. Power-off the computer. 7. Be sure the system is cabled correctly. 8. Remove or disconnect the following (one at a time) until you find the failure (power-on the computer and reconfigure each time). Any external devices Surge suppressor device (on the computer) Modem, printer, mouse, or non-IBM devices Each adapter Drives Memory-Module Kits (Minimum requirement = 1 bank of 32 MB DIMMs) 206 Netfinity Server HMM