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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
1-2-4
RAM refresh verification failed.
1-3-1
First 64K RAM test failed.
Action
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 DIMMs, 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.
1. Reseat the first microprocessor/memory card that contains
DIMMs, see "Removing a microprocessor/memory card"
on page 51 and "Replacing a microprocessor/memory
card" on page 51.
2. Reseat the DIMMs, see "Removing a DIMM" on page 48
and "Replacing a DIMM" on page 49.
3. Replace the lowest-numbered pair of DIMMs with an
identical known good pair of DIMMs; then, restart the
server. See "Removing a DIMM" on page 48 and
"Replacing a DIMM" on page 49. If the beep code error
remains, go to 4a. Return one DIMM at a time from the
failed pair to its connector, restarting the server after each
DIMM, to identify the failed DIMM.
4. 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.
75
Chapter 5. Diagnostics
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