IBM x3250 M2 Problem Determination And Service Manual page 215

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, Types 4190, 4191 and 4194 server," on page 31 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 event/error log message
System shutoff due to +3.3V under voltage
System shutoff due to +12v over voltage.
System shutoff due to +12v under voltage.
System shutoff due to continuous +5v over
voltage.
System shutoff due to continuous +5v under
voltage.
System shutoff due to VRM 1 over voltage.
System shutoff due to VRM 1 under voltage.
System shutoff due to +2.5v under voltage.
System shutoff due to CPU over temperature.
System shutoff due to board over temperature.
System under recommended voltage on
continuous +5v.
System under recommended voltage for +12v.
System under recommended voltage on +2.5v.
Action
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
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
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
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
1. Make sure that the fans have good airflow and are not
obstructed.
2. (Trained service technician only) Reseat the microprocessor
heat-exchanger assembly.
1. Make sure that the fans have good airflow and are not
obstructed.
2. (Trained service technician only) Replace the system board.
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
1. Reseat the power supply.
2. (Trained service technician only) Replace the system board.
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Chapter 5. Diagnostics