Lenovo THINKSERVER 3797 User Manual
Page 91
Table 3. DSA 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 7, “Parts listing, ThinkServer RD220 Type 3729, 3779, 3797, and 3798,” on page 231 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
166-902-xxx
RMM
I2C Test
Failed
The RMM
indicates a
failure in the
light path bus.
1. Turn off the system and disconnect it
from the power source. You must
disconnect the system from ac power
to reset the RMM.
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 DSA code is at
the latest level. For the latest level of
DSA code, go to
5. Make sure that the RMM firmware is
at the latest level. The installed
firmware level is shown in the DSA
diagnostic event log in the
Firmware/VPD section for this
component. For the latest level of
firmware, go to and select your
system to display a matrix of
available firmware.
6. Run the test again.
7. Disconnect the system from the
power source.
8. Reseat the light path card.
9. Reconnect the system to the power
source.
10. Run the test again.
11. Disconnect the system from the
power source.
12. (Trained service technician only)
Reseat the system board.
13. Reconnect the system to the power
source.
14. Run the test again.
Chapter 5. Diagnostics
83