34 About Your System
Any of these actions will remove fault messages, and return the status
indicators and LCD colors to the normal state. Messages will reappear under
the following conditions:
• The sensor returns to a normal state but fails again, resulting in a new SEL
entry.
• The system is reset and new error events are detected.
• A failure is recorded from another source that maps to the same display
entry.
System Messages
System messages appear on the screen to notify you of a possible problem
with the system. Table 1-3 lists the system messages that can occur and the
probable cause and corrective action for each message.
NOTE: If you receive a system message that is not listed in Table 1-3, check the
documentation for the application that is running when the message appears or the
operating system's documentation for an explanation of the message and
recommended action.
CAUTION: Only trained service technicians are authorized to remove the system
cover and access any of the components inside the system. See your Product
Information Guide for complete information about safety precautions, working
inside the computer, and protecting against electrostatic discharge.
Table 1-7. System Messages
Message Causes Corrective Actions
Alert! DIMM1_A and
DIMM1_B must be
populated with a
matched set of
DIMMs if more than
one DIMM is
present. The
following memory
DIMMs have been
disabled:
If more than one DIMM
is present, DIMMs must
be installed in matching
pairs.
Check other system
messages for additional
information for possible
causes. For memory
configuration information,
see "Memory Module
Installation Guidelines" on
page 102. If the problem
persists, see
"Troubleshooting System
Memory" on page 135.