IBM 306m - eServer xSeries - 8849, Service Manual

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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, 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.
System-error log message Action
System is over recommended voltage for +1.5V
CPU
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
System is over recommended voltage on +3.3V
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.
System is under recommended voltage on VRM
1.
1. (Trained service technician only) Reseat the microprocessor.
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. (Trained service technician only) Microprocessor
b. (Trained service technician only) System board
System is under recommended voltage for
+1.5V CPU
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
System is under recommended voltage on
+3.3V
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.
System log 75% full Clear the current logs.
System log cleared Information only.
System memory error
1. Reseat the DIMMs.
2. Replace the memory.
System over recommended voltage for +12v.
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.
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IBM xSeries 306m Types 8849 and 8491: Problem Determination and Service Guide