IBM PS703 Service Manual page 220

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, type 7891," on page 225 to determine which components are CRUs and which
components are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Isolation
Symptom
Procedure Code
MEMDIMM The failing
Symbolic CRU component is one of
the memory DIMMs.
Error code 1xxx2647
NO12VDC
indicates that the
Symbolic CRU
blade server is
reporting that 12V dc
is not present on the
BladeCenter
midplane.
208
Power Systems: Problem Determination and Service Guide for the IBM PS703 (7891-73X) and PS704 (7891-74X)
Action
1. Replace the failing CRU:
DIMM 10 or 26 (Px-C10)
P1-C10 is memory module 10;
P2-C10 is memory module 26.
DIMM 11 or 27 (Px-C11)
P1-C11 is memory module 11;
P2-C11 is memory module 27.
DIMM 12 or 28 (Px-C12)
P1-C12 is memory module 12;
P2-C12 is memory module 28.
DIMM 13 or 29 (Px-C13)
P1-C13 is memory module 13;
P2-C13 is memory module 29.
DIMM 14 or 30 (Px-C14)
P1-C14 is memory module 14;
P2-C14 is memory module 30.
DIMM 15 or 31 (Px-C15)
P1-C15 is memory module 15;
P2-C15 is memory module 31.
DIMM 16 or 32 (Px-C16)
P1-C16 is memory module 16;
P2-C16 is memory module 32.
2. See "Removing a memory module" on page 249 for location
information and the removal procedure.
3. Install new memory DIMMs, as described in "Installing a memory
module" on page 251.
See "Supported DIMMs" on page 4 for more information.
1. Check the management-module event log for entries that indicate a
power problem with the BladeCenter unit.
2. Resolve any problems.
3. Remove the blade from the BladeCenter unit and then reinsert the
blade server.
4. Power on the blade server.
5. Monitor the blade server operation to verify that the problem is
solved.
6. If the BladeCenter unit is functioning normally, but the 1xxx2647
problem persists, replace the system board and chassis assembly, as
described in "Replacing the FRU system-board and chassis assembly"
on page 264.