IBM System x3550 Type 7978 Problem Determination And Service Manual page 43

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
3-3-3
Description
No operational memory in system.
Action
1. Make sure that the server contains the
correct number of DIMMs, in the correct
order; install or reseat DIMMS; then,
restart the server.
Important: In some memory
configurations, the 3-3-3 beep code might
sound during POST, followed by a blank
monitor screen. If this occurs and the Boot
Fail Count option in the Start Options of
the Configuration/Setup Utility program is
enabled, you must restart the server three
times to reset the configuration settings to
the default configuration (the memory
connector or bank of connectors enabled).
2. Replace the following components one at
a time, in the order shown, restarting the
server each time:
a. DIMMs
b. (Trained service technician only)
System board
Chapter 2. Diagnostics
25