IBM 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.
System-error log message Action
5V Bus Fault (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.
5V Planar over voltage (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.
5V Planar under voltage (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.
Application Posted Alert to ASM Information only
CPU X non-critical over temperature warning
1. Make sure that the fans have good airflow and are not
obstructed.
2. Reseat the microprocessor/memory card. See “Removing a
microprocessor/memory card” on page 51 and “Replacing a
microprocessor/memory card” on page 51.
3. Reseat the microprocessor and heat sink.
CPU X non-recoverable over temperature fault
1. Make sure that the fans have good airflow and are not
obstructed.
2. Reseat the microprocessor/memory card. See “Removing a
microprocessor/memory card” on page 51 and “Replacing a
microprocessor/memory card” on page 51.
3. Reseat the microprocessor and heat sink.
4. Replace the microprocessor/memory card. See “Removing a
microprocessor/memory card” on page 51 and “Replacing a
microprocessor/memory card” on page 51.
CPU removal detected Information only. If the message remains, reseat the
microprocessor/memory cards, see “Removing a
microprocessor/memory card” on page 51 and “Replacing a
microprocessor/memory card” on page 51.
CPU X Over Temperature
1. Check all fans and remove any obstacles from the path of the
airflow.
2. Make sure that the room temperature is within the
recommended range.
3. Make sure that the microprocessor heat sinks are correctly
seated.
Ethernet Data Rate modified from <value1> to
<value2> by user <USERID> Information only
Ethernet Duplex setting modified from <value1>
to <value1> by user <USERID> Information only
Ethernet interface <value> by user <USERID> Information only
Ethernet locally administered MAC address
modified from x:x:x:x:x:x Information only
Chapter 5. Diagnostics
145