HP server rx4610 Service Manual page 57

Chapter 4
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" - displayed on the upper LCD line
"ERRORS IN MEMORY" - displayed on the upper LCD line
"RESETTING SYSTEM" - displayed on the lower LCD line (prior to resetting if an error was found)
Upon reset, you will see the following messages on the LCD:
"First row test"
"0064 MB"
"ALL DIMM MAP OUT" - displayed on the upper LCD line
Example: Consider a system is populated with two rows of 256 MB DIMMS in the upper board row 1-4 and
row 5-8. If an SBE was detected in DIMM 5 during the first row test and an SBE\MBE was detected in DIMM
1 during the base memory test, then the following message will appear on the LCD:
"First row test"
"0064 MB"
"BASE MEMORY TEST"
"ERRORS IN MEMORY"
"RESETTING SYSTEM"
Upon reset, you will see the following messages on the LCD and the system will halt:
"First row test"
"0064 MB"
"ALL DIMM MAP OUT"
User Action
1. Determine the first row of DIMMs using the scanning order defined in Table 11-2. Replace the
first row of DIMMs with known good DIMMs. 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.
NOTE:
Error Logging
- displayed on the upper LCD line
- displayed on the lower LCD line
- displayed on the upper LCD line
- displayed on the lower LCD line
The defective rows of DIMM found during base memory test can be determined
once the system boots from the "DIMMs mapped out" message. Then, those
DIMMs can be replaced, if needed.
Diagnostics
49