A single problem might cause more than one error message. When this occurs,
correct the cause of the first error message. The other error messages usually will
not occur the next time POST runs.
Exception:
If there are multiple error codes or LEDs that indicate a microprocessor
error, the error might be in the microprocessor or in the microprocessor socket. See
“Microprocessor problems” on page 99 for information about diagnosing
microprocessor problems.
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, Type 7942 server,” on page 37 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
1 beep
Memory refresh timer failed.
1. Reseat the DIMMs.
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
a. DIMMs
b. (Trained service technician only)
System board
(Trained service technician only) Replace the
system board.
2 beeps
The server has successfully completed
POST.
None
3 beeps
Base memory read/write test error.
A memory failure occurred within the first
64K of memory.
1. Reseat the DIMMs.
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
a. DIMMs, starting with the
lowest-numbered DIMMs first.
b. (Trained service technician only)
System board
4 beeps
CMOS write/read test failed.
1. Reseat the battery.
2. Clear CMOS memory. See “System-board
switches” on page 11 for information about
how to clear CMOS memory.
3. Load the default BIOS settings:
a. Start the BIOS Setup Utility program
and select
Exit
.
b. Select
Load Default Setting
.
c. Select
Save Changes and Exit
.
4. Replace the following components one at
a time, in the order shown, restarting the
server each time:
a. Battery
b. (Trained service technician only)
System board
84
IBM System x3610 Type 7942: Problem Determination and Service Guide
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