IBM System x3800 Manual page 108

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, System x3800 Type 8865," on page 107 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
5V Aux Power Good Fault
5V Power Good Fault
12V A Bus Fault
12V B Bus Fault
12V C Bus Fault
12V D Bus Fault
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IBM System x3800 Type 8865: Problem Determination and Service Guide
Action
1. Reseat the I/O board.
2. Disconnect the cable that connects the operator information
panel to the I/O board.
3. Replace the I/O board.
4. (Trained service technician only) Replace the PCI-X board.
Disconnect the monitor and all USB devices from the server; then:
1. Reseat the I/O board.
2. Reseat the microprocessor tray.
3. (Trained service technician only) Replace the PCI-X board.
1. Reseat the microprocessor tray.
2. (Trained service technician only) Replace the PCI-X board.
3. (Trained service technician only) Replace the power backplane.
1. Reseat the following components:
a. Disk drives
b. SAS hard disk drive backplane cables
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Disk drives
b. SAS hard disk drive backplane
c. (Trained service technician only) Power backplane
d. (Trained service technician only) PCI-X board
1. Reseat the following components:
a. Adapters
b. Microprocessor tray
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Adapters
b. (Trained service technician only) PCI-X board
c. (Trained service technician only) Power backplane
1. Reseat the following components:
a. Memory cards 3 and 4
b. Microprocessor tray
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Memory cards 3 and 4
b. (Trained service technician only) Power backplane
c. (Trained service technician only) Microprocessor tray