Bus Pip Mab-03 - IBM iSeries Series Hardware Problem Analysis And Isolation

Use this procedure to determine if the multi-adapter bridge is failing when the symbolic FRU PIOCARD is
in the failing item list, with other failing items that have a multi-adapter bridge as a component. The
procedure will start with the failing item list for the SRC that sent you here. It will determine if PIOCARD
should be removed from the failing item list that you are working in.
Use the Service Action Log (SAL) to check for other errors under the same multi-adapter bridge using the
following steps:
1. Were you able to obtain a location for the PIOCARD FRU from the SAL?
v No: Find the SRC in the SAL and record the Direct Select Address (DSA) in word 7. See "Breaking
down the SRC" on page 63 to find the DSA in the SRC. Then, continue with the next step.
v Yes: Go to step 5 (See page 95).
2. Record the Bus number (BBBB part) of the DSA and the Multi-adapter bridge number of the DSA. The
multi-adapter bridge number is the first character of the card identifier part (Cc) in the DSA. See
"Breaking down the SRC" on page 63 to find the DSA in the SRC.
3. Go to "Bus PIP PCIBUS-PIP1" on page 99 to determine the location of the PCI I/O Card in the failing
item list. Return here and continue with the next step.
4. Using the card position table for the frame or I/O tower type that you recorded in "Bus PIP
PCIBUS-PIP1" on page 99. Determine which of the card positions within the frame or I/O tower are
controlled by the same multi-adapter bridge that is controlling the PCI I/O card for which you
determined the location in step 3 (See page 95). See "Card positions" on page 65 in the Bus-PIP
overview. A card position is controlled by the same multi-adapter bridge if it has the same bus number
and multi-adapter bridge number as the PCI I/O Card that you located in step 3 (See page 95). Record
the card position and the DSA from the card position table for each card position that is controlled by
the same multi-adapter bridge.
5. Look in the service action log (SAL), see "Use the service action log" on page 7. Look for other failures
in the same frame that are located in any of the card positions that you recorded in step 4 (See page
95) or that are listed in the SAL with the PIOCARD FRU.
6. Are there any other failures within the same frame that correspond with any of the card positions that
you recorded in step 4 (See page 95) or that are listed in the SAL with the PIOCARD FRU?
v No: Use the failing item list that you were using when you started this procedure.
v Yes: The multi-adapter bridge is failing. Remove symbolic FRU PIOCARD from the list of failing
items, it is not the failing FRU.
Bus PIP MAB-03: For use by authorized service providers.
BUS PIP MAB-03: Isolate to failing multi-adapter bridge resource
Use this procedure to isolate a failing I/O processor or I/O adapter under a multi-adapter bridge. The
procedure will iterate through each IOP under the multi-adapter bridge, powering each one off, and then
resetting the multi-adapter bridge. This process will be repeated until the failing part is isolated.
1. Does the system IPL to DST?
v Yes: Go to the SST/DST display in the partition which reported the problem. Use STRSST if
OS/400 is running, use function 21 if STRSST does not work, or IPL the partition to DST. Then,
continue with the next step.
v No: Perform "Bus PIP MAB-04" on page 97.
This ends the procedure.
2. On the Start Service Tools Sign On display, type in a User ID with QSRV authority and Password.
3. Select Start a service tool —> Hardware service manager —> Logical hardware resources —>
System bus resources.
4. Page forward until you find the multi-adapter bridge where the problem was reported. For help in
identifying the multi-adapter bridge from the Direct Select Address (DSA) in the SRC, see Hardware
Analyze hardware problems
95