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2 Replies Latest reply: Dec 5, 2012 9:01 AM by 977111 RSS

T2000 MB/FF_POK

977111 Newbie
Currently Being Moderated
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
    rukbat Guru Moderator
    Currently Being Moderated
    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 Newbie
    Currently Being Moderated
    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.

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