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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
166-919-xxx RMM 12C Test Failed The RMM
indicates a
failure in the
memory card 1
light path
diagnostics
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
http://www.ibm.com/support/
docview.wss?uid=psg1SERV-DSA.
5. Make sure that the RMM firmware is
at the latest level. The installed
firmware level is shown in the DSA
event log in the Firmware/VPD
section for this component. For the
latest level of firmware, go to
http://www.ibm.com/support/
docview.wss?uid=psg1 MIGR-4JTS2T
and select your system to display a
matrix of available firmware.
6. Run the test again.
7. Turn off the system and disconnect it
from the power source.
8. Reconnect the system to the power
source and turn on the system.
9. Make sure that the reported memory
size is the same as the installed
memory size.
10. If the problem remains, replace the
memory card in memory-card
connector 1.
102 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Hardware Maintenance Manual