Dell POWEREDGE 1900 Hardware Owner's Manual page 24

Table 1-5. System Messages (continued)
Message
BIOS Update Attempt
Failed!
Caution! NVRAM_CLR jumper
is installed on system
board.
CPUs with different cache
sizes detected!
Decreasing available
memory
DIMM pairs must be matched
in size, speed, and
technology. The following
DIMM pair is mismatched:
DIMM x and DIMM y.
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
24
About Your System
Causes
Remote BIOS update attempt failed. Retry the BIOS update. If problem
NVRAM_CLR jumper is installed.
CMOS has been cleared.
Microprocessors with different cache
sizes are installed.
Faulty or improperly installed memory
modules.
Mismatched or unmatched DIMMs
installed; faulty or improperly seated
memory module(s).
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.
Corrective Actions
persists, see "Getting Help" on page 131.
Remove the NVRAM_CLR jumper. See
Figure 6-1 for jumper location.
Ensure that all microprocessors have the
same cache size and that they are
properly installed. See "Microprocessor"
on page 87.
See "Troubleshooting System Memory"
on page 110.
Ensure that all pairs of memory modules
are of the same type and size and that
they are properly installed. See
"Memory" on page 80. If the problem
persists, see "Troubleshooting System
Memory" on page 110.
Populate 2, 4, or 8 DIMMs sequentially
beginning with slot 1. See "Memory" on
page 80.
Ensure that all pairs of memory modules
are of the same type and size and that
they are properly installed. See
"Memory" on page 80. If the problem
persists, see "Troubleshooting System
Memory" on page 110.
Ensure that all pairs of memory modules
are of the same type and size and that
they are properly installed. See
"Memory" on page 80. If the problem
persists, see "Troubleshooting System
Memory" on page 110.