SM BUS error (3-3-2) - (NF 8500R - Type 8681)

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 (below) step 8.
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 server starts, power-off the system, then attach/install the remaining components one at a time, until you hear the 3-3-2 beep.
    The last FRU added prior to the 3-3-2 beep code is the failing FRU.
    Power-on the server after the addition of each FRU, and power it off prior to adding the next FRU.
    FRUs should be added in the following order:
   1.  Front panel (after which you no longer need to use jumper J11 on the I/O board to force power on)
   2.  Power supplies (one at a time)
   3.  Processors (one at a time)

      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 the 3-3-2 beep 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 without the 3-3-2 beep, 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 without the 3-3-2 beep, the processor just removed is the failing FRU. Replace it.
       If the system still gives the 3-3-2 beep, the processor daughter board is the failing FRU. Replace it.

   4.  Processor terminator cards (one at a time)
   5.  Memory card (maintaining DIMM pairs across the memory cards)
   6.  Memory DIMM (maintaining DIMM pairs across the memory cards)
   7.  System management adapter
   8.  SCSI backplane
   9.  Hardfiles (one at a time)
   10.  CDROM drive
   11.  Diskette drive
   12.  Fans (one at a time)
   13.  PCI card (one at a time)
   14.  External device (one at a time)

8.  If the server does not start with the minimum required configuration, one of the FRUs remaining in the configuration is bad.
    Do the following:
   1.  If the system had multiple processors, processor daughter boards, memory cards, DIMMs or power supplies  in its original configuration, swap removed FRUs with those currently installed in the minimum partial-boot  configuration reboot to see if there is any change in system behavior.
       If system boots to the IBM logo screen after swapping a FRU, last FRU removed is the failing FRU.
       Swap FRUs one at a time in this order:

        1) Power supplies
        2) Processors
        3) Processor terminator cards
        4) Processor daughter boards
        5) Memory boards
        6) DIMMs

   2.  Continue with this step until the failing FRU has been identified, or all multiple FRUs have been  cycled through the minimum configuration.
   3.  If the failing FRU has been identified, replace it and go to step 8.
   4.  If all multiple FRUs have been cycled through the minimum configuration and the failing FRU  has not been identified, go to step 9

9.  One of the FRUs remaining in the configuration is the failing FRU.
    Replace FRUs in the order listed below.
    The FRU which allows the system to boot without the 3-3-2 beep is the failing FRU:
   1.  Memory board (if the original configuration had only one)
   2.  DIMM (if the original configuration had only one)
   3.  Processor (if the original configuration had only one)
   4.  Processor terminator card (if the original configuration had only one)
   5.  Processor daughter board (if the original configuration had only one)
   6.  Processor controller board
   7.  I/O board
   8.  I/O function card
   9.  Power control card
   10.  Midplane

10.  Once the failing FRU has been identified and the minimum configuration will boot properly without the  3-3-2 beep code, reconfigure the server to its orginal configuration.

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