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Conference mvblab::alphaserver_4100

Title:AlphaServer 4100
Moderator:MOVMON::DAVISS
Created:Tue Apr 16 1996
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:648
Total number of notes:3158

557.0. "Hung at P0 FAIL 04 FROM0" by FRAIS::JOSBAECHER () Wed Apr 02 1997 11:24

    Hi,
    
    I have received a 4100 that was meant to be upgraded at a customers
    site from a 300MHz CPU to a 466MHz CPU. The current output on the
    operator panel is     
    			P0 FAIL 04 FROM0
    
    The output on the terminal is
    
    		SROM V1.1 on cpu0
    		Sctr 0 -XSROM code CHKSM fail cpu0
    		Sctr 2 -XSROM code CHKSM fail cpu0
    
    only after replacing the backplane the output changed to
    
    		SROM V1.1 on cpu0
    		Sctr 0 -XSROM deadr PTTRN fail cpu0
    		Sctr 2 -XSROM deadr PTTRN fail cpu0
    
    There are no further fault indications on any of the LED's.
    
    It does not matter what type of CPU is installed the system hangs.
    I was told that the firmware upgrade was performed as described in the
    manual and when the power reset was performed that was it.
    
    I have ordered a set of B3040, B3050, and a REV F3 power control
    module.
    
    Can someone explain what the console message part  "FROM" means?
    I suspect it to be Flash ROM, but I have not found a document where the
    short code is explained.
    
    Any ideas in what the cause could be otherwise are apreciated.
    
    Thank's
    
    Michael
T.RTitleUserPersonal
Name		DateLines
557.1HARMNY::CUMMINSWed Apr 02 1997 11:3922
    Which backplane did you replace?
    
    Am guessing from your note that you incorrectly replaced the system
    motherboard rather than the PCI motherboard (Saddle). The system flash
    ROM (FROM) lives on the Saddle.
    
    Power-up OCP display failure codes are described in the AlphaServer
    4100/4000 Service Manual - in the Control Panel chapter; Table 2-1.
    They're also described in the AlphaServer 4100 Configuration and
    Installation Guide in the "If Power-up Fails" section. I'm surprised
    you found this information difficult to find. Did you actually look at
    any of the documentation?
    
    The table in the Service Manual says FROM0 is Flash ROM0 and tells the
    reader that this part resides on the PCI motherboard.
    
    If you swapped the PCI motherboard and not the system motherboard, then
    the next likely suspect is the PCI Bridge card (aka the Horse module).
    
    Let us know the results.
    
    BC
557.2FRAIS::JOSBAECHERThu Apr 03 1997 10:0813
    Hi,
    
    I had replaced the Horse and Saddle modules without any changes. Only
    after changing the system mother board did the result slightly change
    as indicated in the original notes entry.
    
    As you recommended I replaced the Horse and Saddle with a newly ordered
    set and nothing changes. So the only chance that I can see right now is
    to order a new system mother board and replace it.
    
    Tsch��
    
    Michael
557.33rd mother board OKFRAIS::JOSBAECHERMon Apr 07 1997 04:4415
    Hi,
    
    after changing the system motherboard again the system runs. No matter
    which of the other modules are used it works. So I know, that after the
    power off which was needed to upgrade to the 466MHz CPU's the system
    motherboard died. Also the first spare was effected in the same way.
    
    I replaced the system motherboard and after checkout I upgraded the
    firmware according to the documentation. Repowering the system several
    times did not change anything, so I installed the 466MHz CPU's and it
    worked as well. I have no idea what caused the initial problem.
    
    Thank's
    
    Michael