IBM System x3950 Type 8878 Service Manual page 95

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 8878 and 8879," on page 23 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.
Error code Description
00012000 Processor machine check error.
00019501 Processor 1 is not functioning; check
processor LEDs.
00019502 Processor 2 is not functioning; check
processor LEDs.
Action
1. Reseat the following components:
a. (Trained service technician only)
Microprocessor
b. Microprocessor tray
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)
Microprocessor tray
1. Reseat the following components:
a. Microprocessor tray
b. (Trained service technician only)
Microprocessor 1
2. Replace the following components one at a time,
in the order shown, restarting the server each
time.
a. (Trained service technician only)
Microprocessor 1
b. (Trained service technician only)
Microprocessor tray
1. Reseat the following components:
a. Microprocessor tray
b. (Trained service technician only)
Microprocessor 2
2. Replace the following components one at a time,
in the order shown, restarting the server each
time.
a. (Trained service technician only)
Microprocessor 2
b. (Trained service technician only)
Microprocessor tray
79
Chapter 5. Diagnostics