2 Replies Latest reply: Dec 5, 2012 11:01 AM by 977111 RSS

    T2000 MB/FF_POK

    977111
      I have a bunch of T2000s that won't start due to an error with "MB/FF_POK"

      What exactly is the MB/FF_POK and is there a way to replace it?

      I've seen in documentation that it's either the SC or "system hardware"

      We've had three Techs working on this on and off for several months and nobody has made any progress.

      Thanks in advance!



      Here is the serial terminal output of the error we are having. MB/FF_POK is at the bottom.

      "ALOM - POST run incomplete previously, no POST this time

      ALOM BOOTMON v1.1.8
      ALOM Build Release: 001
      Reset register: f0000000 EHRS ESRS LLRS SWRS


      Check for Handshake


      Returned from Boot Monitor and Handshake



      Loading the runtime image... VxWorks running.

      Starting Advanced Lights Out Manager CMT v1.1.8

      Copyright 2005 Sun Microsystems, Inc. All rights reserved.
      Use is subject to license terms.

      Current mode: NORMAL
      Attaching network interface lo0... done.

      ALOM BOOTMON v1.7.6
      ALOM Build Release: 001
      Reset register: f0000000 EHRS ESRS LLRS SWRS


      ALOM POST 1.0


      Dual Port Memory Test, PASSED.

      TTY External - Internal Loopback Test
      TTY External - Internal Loopback Test, PASSED.

      TTYC - Internal Loopback Test
      TTYC - Internal Loopback Test, PASSED.

      TTYD - Internal Loopback Test
      TTYD - Internal Loopback Test, PASSED.

      Memory Data Lines Test
      Memory Data Lines Test, PASSED.

      Memory Address Lines Test
      Slide address bits to test open address lines
      Test for shorted address lines
      Memory Address Lines Test, PASSED.

      Boot Sector FLASH CRC Test
      Boot Sector FLASH CRC Test, PASSED.



      Return to Boot Monitor for Handshake
      ALOM POST 1.0
      Status = 00007fff

      Returned from Boot Monitor and Handshake



      Instruction CACHE Test
      DISABLE the I-CACHE
      ENABLE the I-CACHE
      Verify I-CACHE Performance Increase
      Instruction CACHE Test, PASSED.

      Memory Cells Test
      Counting UP: Write data: 00000000
      Counting DOWN: Read - Verify - Write data: ffffffff
      Counting UP: Read - Verify - Write data: 55aa33cc
      Memory Cells Test, PASSED.

      Data CACHE Test
      Verify D-CACHE Performance Increase
      D-CACHE Performance Increase I-CACHE Disabled
      D-CACHE Performance Increase I-CACHE Enabled
      Verify D-CACHE Memory
      Data CACHE Test, PASSED.

      Main Sectors FLASH CRC Test
      Main Sectors FLASH CRC Test, PASSED.

      Loading the runtime image... VxWorks running.

      Starting Advanced Lights Out Manager CMT v1.7.6

      Copyright 2008 Sun Microsystems, Inc. All rights reserved.
      Use is subject to license terms.

      Current mode: NORMAL
      Attaching network interface lo0... done.
      Attaching network interface motfec0.... done.
      Booting from Segment 0


      Sun(tm) Advanced Lights Out Manager CMT v1.7.6


      SC Alert: SC System booted.


      Full VxDiag Tests

      BASIC TOD TEST
      Read the TOD Clock:
      SC Alert: Preceding SC reset due to watchdog
      SAT JAN 01 00:01:47 2000
      Wait, 1 - 3 seconds
      Read the TOD Clock: SAT JAN 01 00:01:49 2000
      BASIC TOD TEST, PASSED

      ETHERNET CPU LOOPBACK TEST
      50 BYTE PACKET - a 0 in field of 1's.
      50 BYTE PACKET - a 1 in field of 0's.
      900 BYTE PACKET - pseudo-random data.
      ETHERNET CPU LOOPBACK TEST, PASSED

      Full VxDiag Tests - PASSED



      Status summary - Status = 7FFF

      VxDiag - - PASSED
      POST - - PASSED
      POST - - PASSED

      I2C - - PASSED
      EPROM - - PASSED
      FRU PROM - - PASSED

      ETHERNET - - PASSED
      MAIN CRC - - PASSED
      BOOT CRC - - PASSED

      TTYD - - PASSED
      TTYC - - PASSED
      MEMORY - - PASSED
      MPC885 - - PASSED


      Please login:

      Serial line login timeout, returns to console stream.

      Enter #. to return to ALOM.
      System power on has been requested via power button.
      |
      SC Alert: Host system poweron failed due to fault at MB/FF_POK.
      |"
        • 1. Re: T2000 MB/FF_POK
          974108 wrote:
          I have a bunch of T2000s that won't start due to an error with "MB/FF_POK"
          What exactly is the MB/FF_POK and is there a way to replace it?
          I've seen in documentation that it's either the SC or "system hardware"
          A quick Google search on MB/FF_POK seems to confirm that it is a catastrophic failure of a hardware component. References in those web searches suggest it is a sensor incorporated to the circuitry of the system, thus it will not be a simple repair part. Because of the "MB" in that text string, I'd guess the component is on the systemboard and not on the SC circuitry.

          If you can do a showenvironment from the SC, do you see anything obvious?
          We've had three Techs working on this on and off for several months and nobody has made any progress.
          Does that mean you have service contract coverage on the box?
          If so, then get a replacement systemboard.
          If not, then go buy a used replacement T2000.
          Thanks in advance!
          • 2. Re: T2000 MB/FF_POK
            977111
            Thanks for the response!

            We had suspected there was no way to "fix" it other than replacing the motherboard but were unable to find anything conclusive.