I2Cbus - IBM iSeries Series Hardware Problem Analysis And Isolation

v No: If the system IPLs past the original error, then isolate to the failing IOP or IOA card. Follow the
service actions for the new SRC.
This ends the procedure.
17. Remove (and label) all of the storage device units EXCEPT for the alternate IPL load-source device
unit you are currently using. (This includes all of the disk devices in D31-D40 and D46-D50.)
If the system IPLs past the original error, then isolate to the failing device unit.
If the failure still occurs, replace the following FRUs in order one at a time until the problem is
resolved. See the Remove and replace procedures.
a. Load source IOP in location C01 in the FC 9094 base I/O tower.
b. First storage IOA (location C02, C03, or C04) in the FC 9094 base I/O tower.
c. HSL I/O bridge card in location C10 in the FC 9094 base I/O tower.
d. Network interface controller (NIC) card in location M41 in the Models 870 or 890 system unit.
e. Tower card in location CB1 in the FC 9094 base I/O tower.
This ends the procedure.

I2CBUS

For use by authorized service providers.
A Fault was detected on the I2C bus.
1. Are you working on a Model 270, 800, 810, 820, or 825:
v No: Continue with the next step.
v Yes: Go to step 15 (See page 355).
2. Are you working on an FC 5075, FC 0575, FC 5095, or FC 0595 Expansion I/O Tower?
v No: Continue with the next step.
v Yes: Go to step 20 (See page 356).
3. Is the SRC 3100?
v No: Continue with the next step.
v Yes: Replace the Tower card - CB1. Use the FRU locations and failing components table in the
Locations and addresses page for the model or feature code you are working on. The table will
include location, and remove and replace instructions.
This ends the procedure.
4. Is the SRC 3101, 3105, 3115, or 3116?
v No: Go to step 7 (See page 354).
v Yes: Are you working on an FC 5078, FC 0578, FC 5088, or FC 0588?
– Yes: Continue with the next step.
– No: Replace the following FRUs. Use the FRU locations and failing components table in the
Locations and addresses page for the model or feature code you are working on. The table will
include location, and remove and replace instructions.
- Control panel - NB1
- Tower card - CB1
- Power cable (PWR60) - Power distribution board (PB1) to Device board (DB3)
- Signal cable (SIG63) - Control panel (NB1) to Device board (DB3)
This ends the procedure.
5. Replace the following FRUs. See either Locations — FC 5078, FC 0578 Expansion I/O Unit or
Locations — FC 5088, FC 0588 Expansion I/O Unit for part numbers and locations information.
v For SRC 3101 or 3115:
– Control panel - NB1
– Tower card- CB1
This ends the procedure.
Analyze hardware problems
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