IBM System x3950, 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, Type 8878 and 8879,” on page 109 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.
Beep code Description Action
One long and one short
beep
Card error.
1. Reseat the following components:
a. Microprocessor tray
b. I/O board
2. Replace the following components one at a
time, in the order shown, restarting the
server each time.
a. (Trained service technician only)
Microprocessor tray
b. I/O board
One long and two short
beeps
Card error.
1. Reseat the following components:
a. Microprocessor tray
b. I/O board
2. Replace the following components one at a
time, in the order shown, restarting the
server each time.
a. (Trained service technician only)
Microprocessor tray
b. I/O board
Two long and two short
beeps
Card error.
1. Reseat the following components:
a. Microprocessor tray
b. I/O board
2. Replace the following components one at a
time, in the order shown, restarting the
server each time.
a. (Trained service technician only)
Microprocessor tray
b. I/O board
No-beep symptoms
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 109 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.
No-beep symptom Description Action
No beeps occur, and the
system operates
correctly.
1. (Trained service technician only) Reseat the
operator information panel.
2. (Trained service technician only) Replace
the operator information panel.
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IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide