Sun Fire[TM] 3800/4800/E4900/6800/E6900 CPU Board failed with Bad checksum POST Segment

Asset ID:	1-72-1922246.1
Update Date:	2017-10-18
Keywords:

Solution Type Problem Resolution Sure

Solution 1922246.1 : Sun Fire[TM] 3800/4800/E4900/6800/E6900 CPU Board failed with Bad checksum POST Segment

Applies to:

Sun Fire 6800 Server - Version All Versions and later
Sun Fire E6900 Server - Version All Versions and later
Sun Fire 4800 Server - Version All Versions and later
Sun Fire E4900 Server - Version All Versions and later
Sun Fire 3800 Server - Version All Versions and later
Information in this document applies to any platform.

Symptoms

System board would not power on and would fail on the firmware on one of the PROMs during POST

When powered on SB exhibits PROM related failures. Setkeyswitch does not complete and the Board is marked as failed

SC> setkeyswitch on
Powering boards on ...
Bad checksum POST Segment PROM 1 in SB0
Please use flashupdate to update the firmware on the board.
Sep 01 10:29:33 E6900A_SC0 Domain-B.SC: Excluded unusable, unlicensed, failed or disabled board: /N0/SB0
Testing CPU Boards ...
Sep 01 10:29:33 E6900A_SC0 Domain-B.SC: No usable Cpu board in domain.
setkeyswitch operation did not complete
keyswitch is: standby

/N0/SB0 On CPU Board V2 Assigned Failed B

Each time POST is run it fails on the firmware on PROM1 on the board

E6900A_SC0:SC> poweron sb0
Bad checksum POST Segment PROM 1 in SB0
Please use flashupdate to update the firmware on the board.
/N0/SB0: powered on

Showboards shows the flashprom as corrupted

/N0/SB0/FP1 - - - - - Corrupted
flashprom

Cause

Flashprom as corrupted

Solution

Once the firmware is copied from another board and the board is powered off and on and then tested it can power on post and rejoins the config.

E6900A_SC0:SC> flashupdate -c SB1 SB0
Waiting for critical processes to finish. This may take a while.
Critical processes have finished.
Updating the flash image of PROM /N0/SB0/FP0 with PROM /N0/SB1/FP0
Erasing .................. Done
Programming .................. Done
Verifying .................. Done
Updating the flash image of PROM /N0/SB0/FP1 with PROM /N0/SB1/FP0
Erasing .................. Done
Programming .................. Done
Verifying .................. Done

References

<NOTE:1012868.1> - How to Flashupdate a Single board on Sun Fire[TM] v1280, E2900, 3800, 4800, 4810, 6800, E4900, E6900, or Netra 1280, 1290 servers
<NOTE:1153444.1> - Oracle Services Tools Bundle (STB) - RDA/Explorer, SNEEP, ACT

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