Extended Memory Test - HP server rx4610 Service Manual

Chapter 4
Error Logging
The defective row/DIMM(s) found during this test case will be logged to the SEL and reported on the screen.
Case 4
This is a special case where memory errors encountered in the first row test and base memory test can lead
to an infinite loop of system resets. This special case occurs under the following conditions:
1. First row test encounters an SBE, base memory test encounters memory errors and the jumper
is set to 'clear CMOS' position
2. First row test encounters an SBE, base memory test encounters memory errors and a front
panel button combination to clear CMOS has been completed.
OR
3. First row test encounters an SBE, base memory test encounters memory errors and a bad
CMOS checksum was seen by BIOS.
User Notification
The BIOS will try to map out defective rows found during base memory test but will end up in an infinite reset
loop.
"First row test"
"0064 MB"
"BASE MEMORY TEST" - displayed on the upper LCD line
"ERRORS IN MEMORY" - displayed on the upper LCD lin
"RESETTING SYSTEM" - displayed on the lower LCD line (prior to resetting)
Upon reset, the above messages will display again on the LCD and will keep repeating in an infinite loop.
User Action
1. Use the out-of-band mechanism of reading System Event Log (Intel's Server Management
software, specifically DPC, can be used for this) to determine the location of the row of defective
DIMMs from the SELViewer Utility or by running either the Intel Server Control (ISC) or Direct
Platform Control (DPC) to read the System Event Log (SEL). Replace the defective DIMMs (in
the example it is 5-8). On replacing the DIMMs, make sure the size and HP part number match.
2. Clear CMOS via the front panel or via clear CMOS jumper in order to clear previous defective
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 screen.

Extended Memory Test

The extended memory test takes effect after both the first row test and the base memory test have passed.
The Extended Memory Test will test the physical memory above 2 GB to a maximum of the total installed
memory. Any errors found will be detected to the failing memory row and recorded into the CMOS history
bits for processing during the next reset. Since this occurs after system POST, the BIOS will not reset the
system. Instead, error messages will be displayed on the video screen.
There is a 2 GB fixed gap between the memory address 2 GB to 4 GB that is reserved for PCI. This 2 GB of
memory addresses, as seen by the processor, will not be tested.
User Notification
There are two sets of messages associated with this test. The first occurs when the test is being performed.
The message is as follows:
- displayed on the upper LCD line
- displayed on the lower LCD line
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Diagnostics
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