IBM x3400 7975 Problem Determination And Service Manual page 99

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 x3400 Types 7973, 7974, 7975 and 7976," on page 87 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
System shutoff due to VRM over voltage
System shutoff due to VRM under voltage
System under recommended voltage for +12v
System under recommended voltage on +2.5v
System under recommended voltage on
continuous +5v
System x started a RS485 connection with us
We started a RS485 connection with remote
system x
We will retry sending alert ID x; when accepted
by a remote system, it will have a different ID
Windows blue screen has been captured
Action
1. (Trained service technician only) Reseat the microprocessor.
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) System board
1. (Trained service technician only) Reseat the microprocessor.
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) System board
1. Reseat the following components:
a. Hot-swap power supplies (if any are installed)
b. (Trained service technician only) Power-supply cables on
the system board
2. (Trained service technician only) Replace the system board.
1. Reseat the following components:
a. Hot-swap power supplies (if any are installed)
b. (Trained service technician only) Power-supply cables on
the system board
2. (Trained service technician only) Replace the system board.
1. Reseat the following components:
a. Hot-swap power supplies (if any are installed)
b. (Trained service technician only) Power-supply cables on
the system board
2. (Trained service technician only) Replace the system board.
Information only.
Information only.
Information only.
Information only.
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Chapter 2. Diagnostics