IBM System x3755Types 7163, Problem Determination And Service Manual

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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
Sensor
number Sensor
type
Action
VRD 1.2V
Assertion 01 (Power unit
failure)
2F 08
1. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and
“Replacing the I/O board assembly” on page 69.
2. Isolate the failing microprocessor/memory card. See
“Removing a microprocessor/memory card” on page 51 and
“Replacing a microprocessor/memory card” on page 51.
3. Replace the microprocessor/memory card. See “Removing a
microprocessor/memory card” on page 51 and “Replacing a
microprocessor/memory card” on page 51.
Ambient temperature 32 01 Make sure that the fans have good airflow and are not obstructed.
Exhaust temperature 33 01 Make sure that the fans have good airflow and are not obstructed.
Power supply 1 fault 38 08
1. Reseat power supply 1.
2. Replace power supply 1.
3. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and
“Replacing the I/O board assembly” on page 69.
Power supply 2 fault 39 08
1. Reseat power supply 2.
2. Replace power supply 2.
3. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and
“Replacing the I/O board assembly” on page 69.
Fan 1 tach 40 04
1. Reseat fan 1.
2. Replace fan 1.
3. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and
“Replacing the I/O board assembly” on page 69.
Fan 2 tach 41 04
1. Reseat fan 2.
2. Replace fan 2.
3. Replace the front fan board.
4. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and
“Replacing the I/O board assembly” on page 69.
Fan 3 tach 42 04
1. Reseat fan 3.
2. Replace fan 3.
3. Replace the front fan board.
4. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and
“Replacing the I/O board assembly” on page 69.
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IBM System x3755 Type 8877 and 7163: Problem Determination and Service Guide