IBM 8863 - eServer xSeries 366 - Tier 1 CRU information

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 8863,” on page 93 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
Power Supply X 12V Over Voltage Fault
1. Power supply
2. Power backplane
Power Supply X 12V Under Voltage Fault
1. Power supply
2. Power backplane
Power Supply X AC Power Removed
1. Connect the ac power cord to power supply X.
2. Replace power supply X.
Power Supply X Current Fault
1. Power supply
2. Power backplane
Power Supply X DC Good Fault
1. If the system power present LED is lit, reduce the server to the
minimum configuration (see page 91) and replace components
one at a time to isolate the fault.
2. Reseat the following components:
a. Power supply
b. Power backplane
3.
Replace the components listed in step 2 one at a time, in the
order shown, restarting the server each time.
Power Supply X Removed
1. Reseat power supply X.
2. Replace power supply X.
3. Replace the power backplane.
Power Supply X Temperature Fault
1. Make sure that the fan air intake areas are clear and well
ventilated.
2. Make sure that all fans are installed and functioning.
3. Reseat power supply X.
4. Replace power supply X.
QA Cache 1.8V Power Good Fault
1. Reseat the microprocessor tray.
2. (Trained service technician only) Reseat the microprocessors.
3. Reseat the microprocessor VRMs, if present.
4. (Trained service technician only) Replace the microprocessor
tray.
QA Vcc PLL Power Good Fault
1. Reseat the microprocessor tray.
2. (Trained service technician only) Reseat the microprocessors.
3. Reseat the microprocessor VRMs, if present.
4. (Trained service technician only) Replace the microprocessor
tray.
QB Cache Power Good Fault
1. Reseat the microprocessor tray.
2. (Trained service technician only) Reseat the microprocessors.
3. Reseat the microprocessor VRMs, if present.
4. (Trained service technician only) Replace the microprocessor
tray.
86 IBM xSeries 366 Type 8863: Problem Determination and Service Guide