Base Memory Test - HP Integrity rx4610 User Manual

Chapter 11
"First row test"
"0064 MB"
"ALL DIMM MAP OUT" - displayed on the upper LCD line
User Action
1. Replace the first row of DIMMs. On repacing 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.
Error Logging
The defective row/DIMM(s) found during this test case cannot be logged to the
SEL or reported on screen.

Base Memory Test

Description
The Base Memory Test will take effect after the completion of the first row test
with no errors, or with single bit errors, and if the system contains more memory
to test. The base memory test will test the first 2 GB of memory. If this memory
is found to be defective, the BIOS will detect the defective memory row(s), write
these rows into CMOS for further processing, and display an appropriate error
message on the front panel LCD. The BIOS will then force a reset of the system.
During the next boot, this written history will be read from CMOS and the
defective rows will be mapped out of the data path. The BIOS does not
differentiate between SBEs and MBEs. In both cases the system will reset and
map out the defective row, upon detection.
Combining the memory errors encountered in the first row test with base memory
test leads to several possible cases. Some failing cases are described below.
Case 1
The system is populated with more than one row of memory and the first row
memory test encounters a SBE (Single Bit Error). In this case, the BIOS will
write these rows into CMOS history and map out the first row of DIMMs and
continues with base memory testing. If the base memory test does not encounter
any memory errors, then the system will continue to boot.
- displayed on the upper LCD line
- displayed on the lower LCD line
Troubleshooting
183