IBM 306m - eServer xSeries - 8849, Problem Determination And Service Manual

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Exception: If there are multiple error codes or diagnostics LEDs that indicate a
microprocessor error, the error might be in the microprocessor or in the
microprocessor socket. See “Microprocessor problems” on page 80 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 8849 and Type 8491 server,” on page 19 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
1-1-3 CMOS write/read test failed.
1. Reseat the battery.
2. Clear CMOS, see “System-board switches
and jumpers” on page 7
3. 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
1-1-4 BIOS EEPROM checksum failed. (Trained service technician only) Replace the
system board.
1-2-1 Programmable interval timer failed. (Trained service technician only) Replace the
system board.
1-2-2 DMA initialization failed. (Trained service technician only) Replace the
system board.
1-2-3 DMA page register write/read failed. (Trained service technician only) Replace the
system board.
1-2-4 RAM refresh verification failed.
1. Reseat the DIMMs.
2. Replace the following components, one at
a time, in the order shown:
a. DIMMs
b. (Trained service technician only)
System board
1-3-1 1st 64K RAM test failed.
1. Reseat the DIMMs.
2. Replace the lowest-numbered pair of
DIMMs with an identical known good pair
of DIMMs; then, restart the server. If the
beep code error remains, go to 3b. Return
one DIMM at a time from the failed pair to
its connector, restarting the server after
each DIMM, to identify the failed DIMM.
3. 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
2-1-1 Secondary DMA register failed. (Trained service technician only) Replace the
system board.
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IBM xSeries 306m Types 8849 and 8491: Problem Determination and Service Guide