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The first line is the total memory installed (regardless of condition). The second line is
the total memory usable (and is less than the first line, only if defective DIMMs were
found). The third line counts the memory as the test is being performed. When the
test is completed, the number in this line should equal the number in the second line.
The following error message for the defective DIMM 5 will be displayed on the video
as follows:
"8C95: DIMMs mapped out: Lower Board, 5 - 8"
User action: If the user is satisfied with the configured memory on the system, no
action is required. Otherwise, follow these steps:
1.
Determine the location of the row of defective DIMMs from the error message or
by running the EFI based SELViewer Utility. Replace the defective DIMMs (in the
example it is 5-8). On replacing the DIMMs, make sure the size and manufacturer
match.
2.
Clear CMOS via the front panel or via clear CMOS jumper (see "Clearing the
CMOS register" on page 220 ) in order to clear previous bad DIMM history.
3.
Power on the system to continue.
Error logging: The defective row/DIMM(s) found during this test case will be logged
to the SEL and reported on the screen.
Case 2
The system is populated with more than one row of memory and the first row
memory test encounters a SBE (Single Bit Error). The base row test encounters
memory errors on all the rows. In this case, the BIOS will write the failing row from
first row test into CMOS history, map out the first row of DIMMs, and continues with
base memory testing. The base memory test will write the failing rows into CMOS
history and map out the defective rows upon reset. If all the memory in base memory
(< 2 GB) is mapped out due to memory errors, then the system will display a message
on the LCD and halt the system.
User notification: This memory test occurs during POST and prior to video sync.
Therefore, any error found during this test will result in the following message
displayed on the LCD panel and the system will halt.
"First row test" –
"0064 MB" –
"BASE MEMORY TEST" –
"ERRORS IN MEMORY" –
"RESETTING SYSTEM" –
Upon reset, you will see the following messages on the LCD:
"First row test" –
"0064 MB" –
"ALL DIMM MAP OUT" –
Example: Consider a system is populated with two rows of 128 MB DIMMS in the
upper board row 1-4 and row 5-8. If an SBE was detected in DIMM 5 during the first
displayed on the upper LCD line
displayed on the lower LCD line
displayed on the upper LCD line
displayed on the upper LCD line
displayed on the lower LCD line (prior to resetting if an
error was found)
displayed on the upper LCD line
displayed on the lower LCD line
displayed on the upper LCD line
77
Diagnostics
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