IBM 8681 Hardware Maintenance Manual - Page 216

SM BUS error (3-3-2) Note The minimum system configuration required to force power-on the system using I/O jumper J11 is: 1. One DIMM on one memory card 2. One processor 3. One processor daughter board 4. Processor control board without cache coherency filter cards 5. Midplane 6. Power control card 7. LED card 8. I/O board 9. I/O function card 10. One power supply If the system produces a 3-3-2 beep error, power-off the system and disconnect all the power supplies from the ac power source. Wait 30 seconds, then reconnect the ac power source and power-on the system. If this does not correct the problem, do the following: 1. Connect remotely to the system through the System Management Adapter and check the system error log. Investigate any errors posted. 2. Power off the system and disconnect all the power supplies from the ac power source. 3. Reduce the system to the minimum system configuration described in the note at the beginning of this section. You may leave the PCI cards in place and use the PCI switch card to remove power from the PCI slots. Note Any power supplies not connected to AC power should be unlatched and unseated from the midplane to ensure proper I2C bus termination. Lift the power supply handle and pull the power supply to the rear of the system approximately 1 inch. 4. Reconnect the ac power source to the single power supply in the minimum configuration. Use jumper J11 on the I/O Board to power-on the server. 5. If the server still exhibits the 3-3-2 beep sequence, skip to step 8 on page 210. 6. If the server starts without the 3-3-2 beep code, power-off the system, remove the jumper from J11, and then attach the Front Panel Cable and front panel assembly to the I/O Function Card. 7. Attempt to boot the server using the power control button on the Front Panel. If you hear the 3-3-2 beep code, replace the Front Panel and/or cable. If the 208 Netfinity Server HMM