IBM 7163, Problem Determination And 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, System x3755 Type 8877 and 7163,” on page 25 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 Under Voltage Fault
1. Reseat the power supply.
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Power supply
b. (Trained service technician only) I/O board. See “Removing
the I/O board assembly” on page 68 and “Replacing the I/O
board assembly” on page 69.
Power Supply X AC Power Removed
1. Connect the ac power cord to power supply X.
2. Make sure that the AC power LED on the power supply is lit.
3. Replace power supply X.
4. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and “Replacing
the I/O board assembly” on page 69.
Power Supply X Current Fault
1. Reseat the power supply.
2. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Power supply
b. (Trained service technician only) I/O board. See “Removing
the I/O board assembly” on page 68 and “Replacing the I/O
board assembly” on page 69.
Power Supply X DC Good Fault
1. If the power-on LED is lit, reduce the server to the minimum
configuration and replace components one at a time to isolate
the fault.
2. Reseat the power supply.
3. Replace the following components one at a time, in the order
shown, restarting the server each time:
a. Power supply
b. (Trained service technician only) I/O board. See “Removing
the I/O board assembly” on page 68 and “Replacing the I/O
board assembly” on page 69.
Power Supply X Failed
1. Reseat power supply X.
2. Replace power supply X.
3. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and “Replacing
the I/O board assembly” on page 69.
Power Supply X Removed
1. Reseat power supply X.
2. Replace power supply X.
3. (Trained service technician only) Replace the I/O board, see
“Removing the I/O board assembly” on page 68 and “Replacing
the I/O board assembly” on page 69.
Chapter 5. Diagnostics
149