I 2 C Fault Isolated To A Single Fru; I 2 C Fault Spanning Multiple Frus - Oracle SPARC Enterprise M4000 Installation And Service Manual

If the failure is on a bus that spans multiple FRUs, follow the suggested steps in
Section D.2.2.2, "I
problem FRU.
If the failure is in the host, see
Card Installed in the Host" on page
2
D.2.2.1 I C Fault Isolated to a Single FRU
If the fault list shows a single FRU as suspect, replace the FRU. The centerplane in
the chassis and the link cards each contain an I
Possible Causes
Faulty centerplane or link card.
Solutions
If the problem is in hc:///iox=box_instance/i2c_c=0, then replace the chassis
■
(IOX@nnnn).
If the problem is in hc:///iox=box_instance/iob=x/link=0/i2c_local=0,
■
then replace this link card (IOX@nnnn/IOBx/LINK).
If the problem is in hc:///chassis=0/iou=x/pcislot=y/link=
■
0/i2c_local=0, then replace this link card (IOU#x-PCI#y).
2
D.2.2.2 I C Fault Spanning Multiple FRUs
There are three I
FRUs. They are identified on the centerplane as described in the following table.
TABLE D-1
2
I C Bus Tree
hc:///iox=box_instance/i2c_a=0
hc:///iox=box_instance/i2c_b=0
hc:///iox=box_instance/i2c_main=0
2
C Fault Spanning Multiple FRUs" on page D-7
Section D.2.2.3, "I
2
C bus trees in the External I/O Expansion Unit that span multiple
Multiple FRUs Covered in I
2
C Fault When Accessing the Link
D-11.
2
C bus fully contained within the FRU.
2
C Buses
FRUs Covered in I
Spans the centerplane, PSU 1, and boat 0
Spans the centerplane, PSU 0, and boat 1
Spans all the FRUs: the centerplane, both
PSUs, both boats, and the link cards
installed in the boats
Appendix D
to isolate the
2
C Bus
Troubleshooting D-7