IBM System x3550 Type 7978 Problem Determination And Service Manual page 42

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 7978 and 1913 server," on page 89 to determine which components are
CRUs and which components are FRUs.
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
3-3-2
24
IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide
Description
2
Critical SMBUS (I C bus) error occurred.
Action
1. Disconnect server power, wait 30 seconds
and retry.
2. Reseat the following components:
a. (Trained service technician only)
Microprocessor
b. PCI-X/PCI Express riser (if present)
c. PCI-X/PCI Express adapter (if present)
d. DIMMs
e. Hard disk drives
f. Hard disk drive backplane
g. Hard disk drive power cable
h. Hard disk drive signal cable (only for
SAS drive)
3. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
a. (Trained service technician only)
System board
b. (Trained service technician only)
Microprocessor
c. PCI-X/PCI Express riser (if present)
d. PCI-X/PCI Express adapter (if present)
e. DIMMs
f. Hard disk drives
g. Hard disk drive backplane
h. Hard disk drive power cable
i. Hard disk drive signal cable (only for
SAS drive)