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Table 12. Diagnostic messages (continued)
v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
v See Chapter 3, “Parts listing, ThinkServer TS100 Machine Types 6431, 6432, 6433, and 6434,” on page 37 to determine
which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained
service technician.
Message
number Component Test State Description Action
166-904-xxx BMC BMC I2C Test Failed BMC indicates a
failure in the
power backplane
bus.
1. Turn off the system and disconnect it
from the power source. You must
disconnect the system from ac power
to reset the BMC.
2. After 45 seconds, reconnect the
system to the power source and turn
on the system.
3. Run the test again.
4. Make sure that the Diagnostic code is
at the latest level. For the latest level
of Diagnostic code, go to:
http://www.lenovo.com/support.
5. Make sure that the BMC firmware is at
the latest level. The installed firmware
level is shown in the Diagnostic event
log in the Firmware/VPD section for
this component. For the latest level of
firmware, start firmware, go to
EasyUpdate or go to:
http://www.lenovo.com/support and
select your system to display a matrix
of available firmware.
6. Run the test again.
7. Remove power from the system.
8. Reseat the power backplane.
9. (Trained service technician only)
Reseat the system board.
10. Reconnect the system to power and
turn on the system.
11. Run the test again.
12. If the problem remains, collect the
data from the Diagnostic event log
and send it to Lenovo Service. For
information about contacting Lenovo
Service, see http://www.lenovo.com/
support.
Chapter 5. Diagnostics
201