IBM System x3755 Problem Determination And Service Manual page 179

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, System x3755 Type 8877 and 7163," on page 25 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.
BMC log message
Fan 4 tach
Fan 5 tach
Fan 6 tach
Fan 7 tach
Fan 8 tach
CPU board 1 DIMM
misconfigure
Assertion Event
Event data 10 FF FF
CPU board 2 DIMM
misconfigure
Assertion Event
Event data 20 FF FF
CPU board 3 DIMM
misconfigure
Assertion Event
Event data 30 FF FF
CPU board 4 DIMM
misconfigure
Assertion Event
Event data 40 FF FF
Sensor Sensor
number type Action
43 04
1. Reseat fan 4.
2. Replace fan 4.
3. (Trained service technician only) Replace the I/O board, see
44 04
1. Reseat fan 5.
2. Replace fan 5.
3. (Trained service technician only) Replace the I/O board, see
45 04
1. Reseat fan 6.
2. Replace fan 6.
3. (Trained service technician only) Replace the I/O board, see
46 04 Replace power supply 2.
47 04 Replace power supply 1.
4F 0A
1. Make sure that the DIMMs are installed in the correct order.
2. Reseat the DIMMs, see "Removing a DIMM" on page 48 and
4F 0A
1. Make sure that the DIMMs are installed in the correct order.
2. Reseat the DIMMs, see "Removing a DIMM" on page 48 and
4F 0A
1. Make sure that the DIMMs are installed in the correct order.
2. Reseat the DIMMs, see "Removing a DIMM" on page 48 and
4F 0A
1. Make sure that the DIMMs are installed in the correct order.
2. Reseat the DIMMs, see "Removing a DIMM" on page 48 and
"Removing the I/O board assembly" on page 68 and
"Replacing the I/O board assembly" on page 69.
"Removing the I/O board assembly" on page 68 and
"Replacing the I/O board assembly" on page 69.
"Removing the I/O board assembly" on page 68 and
"Replacing the I/O board assembly" on page 69.
"Replacing a DIMM" on page 49.
"Replacing a DIMM" on page 49.
"Replacing a DIMM" on page 49.
"Replacing a DIMM" on page 49.
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Chapter 5. Diagnostics