IBM xSeries 306m Problem Determination And Service Manual page 122

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.
System-error log message
System memory error
System over recommended voltage for +12v.
System over recommended voltage on +2.5v.
System over recommended voltage on
continuous +5v.
System shutoff due to +1.5V CPU over voltage
System shutoff due to +1.5V CPU under voltage 1. Reseat the following components:
System shutoff due to +2.5v over voltage.
System shutoff due to +3.3V over voltage
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IBM xSeries 306m Types 8849 and 8491: Problem Determination and Service Guide
Action
1. Reseat the DIMMs.
2. Replace the memory.
1. Reseat the following components:
a. (Trained service technician only) System board
b. (Trained service technician only) Power supply
2. (Trained service technician only) Replace the system board.
1. Reseat the following components:
a. (Trained service technician only) System board
b. (Trained service technician only) Power supply
2. (Trained service technician only) Replace the system board.
1. Reseat the following components:
a. (Trained service technician only) System board
b. (Trained service technician only) Power supply
2. (Trained service technician only) Replace the system board.
1. Reseat the following components:
a. (Trained service technician only) Microprocessor
b. (Trained service technician only) System board
c. (Trained service technician only) Power supply
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. (Trained service technician only) System board
b. (Trained service technician only) Microprocessor
a. (Trained service technician only) Microprocessor
b. (Trained service technician only) System board
c. (Trained service technician only) Power supply
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. (Trained service technician only) System board
b. (Trained service technician only) Microprocessor
1. Reseat the following components:
a. (Trained service technician only) System board
b. (Trained service technician only) Power supply
2. (Trained service technician only) Replace the system board.
1. Reseat the following components:
a. (Trained service technician only) System board
b. (Trained service technician only) Power supply
2. (Trained service technician only) Replace the system board.