IBM 306m - eServer xSeries - 8849, Service Manual

Page: 28 / 142

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 29 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 or Type 8491 server,” on page 61 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. 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 following components, one at
a time, in the order shown:
a. DIMMs
b. (Trained service technician only)
System board
2-1-1 Secondary DMA register failed. (Trained service technician only) Replace the
system board.
2-1-2 Primary DMA register failed. (Trained service technician only) Replace the
system board.
2-1-3 Primary interrupt mask register failed. (Trained service technician only) Replace the
system board.
2-1-4 Secondary interrupt mask register failed. (Trained service technician only) Replace the
system board.
12
IBM xSeries 306m Types 8849 and 8491: Problem Determination and Service Guide