IBM 7940, 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 7940 and 7941 servers,” on page 19 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
3-3-2 Critical SMBUS error occurred.
1. Reseat the DIMMs.
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
3-3-3 No operational memory in system. Important: In some memory configurations,
the 3-3-3 beep code might sound during POST
followed by a blank display screen. If this
occurs and the
Boot Fail Count feature in the
Start Options of the Configuration/Setup Utility
program is set to Enabled (its default setting),
you must restart the server three times to force
the system BIOS to reset the CMOS values to
the default configuration (memory connector or
bank of connectors enabled).
1. Install or reseat DIMMS and restart the
server.
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
Two short beeps Information only, configuration has
changed. Run the Configuration/Setup Utility program.
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IBM System x3455 Type 7940 and 7941: Problem Determination and Service Guide