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.
Beep code Description Action
3-3-1 Memory size mismatch occurred.
1. Verify that both DIMMs in the bank are of the same size,
speed, type and technology.
2. Reseat the following components:
a. Microprocessor/memory cards. See “Removing a
microprocessor/memory card” on page 51 and
“Replacing a microprocessor/memory card” on page
51.
b. DIMMs, see “Removing a DIMM” on page 48 and
“Replacing a DIMM” on page 49.
c. Battery. See “Removing the battery” on page 53 and
“Replacing the battery” on page 54.
3. Replace the following components one at a time, in the
order shown, restarting the server each time:
a. DIMMs, see “Removing a DIMM” on page 48 and
“Replacing a DIMM” on page 49.
b. Microprocessor/memory card 4, 3, 2; then, 1. See
“Removing a microprocessor/memory card” on page
51 and “Replacing a microprocessor/memory card” on
page 51.
c. Battery. See “Removing the battery” on page 53 and
“Replacing the battery” on page 54.
d. (Trained service technician only) I/O board. See
“Removing the I/O board assembly” on page 68 and
“Replacing the I/O board assembly” on page 69.
3-3-2 Critical SMBUS error occurred.
1. Reseat the microprocessor/memory cards, see “Removing
a microprocessor/memory card” on page 51 and
“Replacing a microprocessor/memory card” on page 51.
2. Reseat the s, see “Removing a DIMM” on page 48 and
“Replacing a DIMM” on page 49.
3. Replace the following components one at a time, in the
order shown, restarting the server each time.
a. DIMMs, see “Removing a DIMM” on page 48 and
“Replacing a DIMM” on page 49.
b. Microprocessor/memory card 4, 3, 2; then, 1. See
“Removing a microprocessor/memory card” on page
51 and “Replacing a microprocessor/memory card” on
page 51.
c. (Trained service technician only) 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