IBM x3400 7975 - Page 96

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 Action
Serial tamper delay triggered. Possible serial
port break-in attempt
Information only.
System board is over recommended
temperature
1. Make sure that the fans have good airflow and are not
obstructed.
2. (Trained service technician only) Replace the system board.
System board is under recommended
temperature
1. Make sure that the fans have good airflow and are not
obstructed.
2. (Trained service technician only) Replace the system board.
System Complex Powered Down Information only.
System error log full Clear the current logs.
System is over recommended voltage for +3.3V
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.
System is over recommended voltage for 1.5V
CPU
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.
System is over recommended voltage on the
VRM
(Trained service technician only) Reseat the microprocessor.
System is under recommended voltage for
+3.3V
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.
System is under recommended voltage for 1.5V
CPU
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.
System is under recommended voltage on the
VRM
(Trained service technician only) Reseat the microprocessor.
System log 75% full Clear the current logs.
System log cleared Information only.
System Memory Error
1. Reseat the DIMMs.
2. Replace the DIMMs.
78 System x3400 Types 7973, 7974, 7975, and 7976: Problem Determination and Service Guide