Customer messaging policy
• The diagnostic LED illuminates only for memory DIMM errors when isolated to a specific DIMM. If
there is uncertainty about a specific DIMM, then the customer is pointed to the SEL for any actions,
and the DIMM CRU LED for the suspect DIMM on the System Insight Display is not lit.
• For configuration-type errors, for example, the CRU LEDs on the SID LED panel illuminate for all
DIMMs that are not installed.
• No diagnostic messages are reported for single-byte errors that are corrected in both ICH10 caches
and DIMMs during CPE events. Diagnostic messages are reported for CPE events when thresholds
are exceeded for both single-byte and double byte errors; all fatal memory subsystem errors cause
global MCA events.
Table 33: Memory subsystem events that illuminate SID LEDs
Diagnostic
LEDs
Sample IPMI Events Cause Source Notes
DIMMs Type E0h, 208d:04d
MEM_NO_DIMMS_INSTALLED
No DIMMs installed
on one or more
processors
SFW
DIMMs Type E0h, 172d:04d
MEM_DIMM_SPD_CHECKSUM
A DIMM has a serial
presence detect
(SPD) EEPROM with
a bad checksum
SFW Either EEPROM
is
misprogrammed
or this DIMM is
incompatible
DIMMs Type E0h, 4652d:26d
WIN_AGT_PREDICT_MEM_FAIL
This memory rank is
correcting too many
single-bit errors
WIN
Agent
Memory rank is
about to fail or
environmental
conditions are
causing more
errors than
usual
Table 34: Memory subsystem events that might illuminate SID LEDs
Diagnostic
LEDs
Sample IPMI Events Cause Source Notes
DIMMs Type E0h, 174d:26d
MEM_DIMM_TYPE_INCOMPATIBLE
DIMM type is not
compatible with
current DIMMs for this
platform
SFW
Troubleshooting the power subsystem
Cause
The two power supply CRUs for the server provides N+1 redundancy for the server. Each power supply
CRU is identified by the server as 1 and 2 for logging purposes. The power supplies have corresponding
LEDs on the diagnostic LED panel.
118 Customer messaging policy
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