Dell POWEREDGE 1950 Hardware Owner's Manual page 26

Table 1-8. System Messages (continued)
Message
DIMMs must be populated in
sequential order beginning
with slot 1. The following
DIMM is electrically
isolated: DIMM x.
DIMMs should be installed
in pairs. Pairs must be
matched in size, speed,
and technology.
Dual-rank DIMM paired with
Single-rank DIMM - The
following DIMM/rank has
been disabled by BIOS:
DIMM x Rank y
Error: Incorrect memory
configuration. DIMMs must
be installed in pairs of
matched memory size,
speed, and technology.
Error: Memory failure
detected. Memory size
reduced. Replace the
faulty DIMM as soon as
possible.
!!*** Error: Remote Access
Controller initialization
failure*** RAC virtual USB
devices may not be
available...
FBD training error: The
following branch has been
disabled: Branch x
Gate A20 failure
26
About Your System
Causes
The specified DIMM is inaccessible to
the system due to its location. DIMMs
must be populated in sequential order,
beginning with slot 1.
Mismatched or unmatched DIMMs
installed; faulty or improperly seated
memory module(s). The system will
operate in a degraded mode with
reduced ECC protection. Only memory
installed in channel 0 will be
accessible.
Mismatched DIMMs installed; faulty
memory module(s). The system has
detected a dual-rank DIMM paired with
a single-rank DIMM. The second rank
of the dual-rank DIMM will be
disabled.
Mismatched or unmatched DIMMs
installed; faulty or improperly seated
memory module(s).
Faulty or improperly seated memory
module(s).
Remote Access Controller initialization
failure.
The specified branch (channel pair)
contains DIMMs that are incompatible
with each other.
Faulty keyboard controller; faulty
system board.
Corrective Actions
Populate 2, 4, 8, or 12 DIMMs
sequentially beginning with slot 1. See
"System Memory" on page 63.
Ensure that all pairs of memory modules
are of the same type and size and that they
are properly installed. See "System
Memory" on page 63. If the problem
persists, see "Troubleshooting System
Memory" on page 102.
Ensure that all pairs of memory modules
are of the same type and size and that they
are properly installed. See "System
Memory" on page 63. If the problem
persists, see "Troubleshooting System
Memory" on page 102.
Ensure that all pairs of memory modules
are of the same type and size and that they
are properly installed. See "System
Memory" on page 63. If the problem
persists, see "Troubleshooting System
Memory" on page 102.
See "Troubleshooting System Memory"
on page 102.
Ensure that the Remote Access Controller
is properly installed. See "RAC Card" on
page 71.
Ensure that only Dell-qualified memory is
used. Dell recommends purchasing
memory upgrade kits directly from
www.dell.com or your Dell sales agent to
ensure compatibility.
See "Getting Help" on page 125.