HP Integrity rx2800 rx2800 i2 User Service Guide - Page 88

Troubleshooting the power subsystem, Power subsystem behavior

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Table 37 Memory subsystem events that light SID LEDs Diagnostic LEDs DIMMs DIMMs Sample IPMI Events Type E0h, 208d:04d MEM_NO_DIMMS_INSTALLED Type E0h, 172d:04d MEM_DIMM_SPD_CHECKSUM DIMMs Type E0h, 4652d:26d WIN_AGT_PREDICT_MEM_FAIL Cause Source Notes No DIMMs installed (in SFW rank 0 of cell 0) A DIMM has a serial presence detect (SPD) EEPROM with a bad checksum This memory rank is correcting too many single-bit errors SFW WIN Agent Light all DIMM LEDs in rank 0 of cell 0 Either EEPROM is misprogrammed or this DIMM is incompatible Memory rank is about to fail or environmental conditions are causing more errors than usual Table 38 Memory subsystem events that may light SID LEDs Diagnostic LEDs DIMMs Sample IPMI Events Type E0h, 4000d:26d MEM_CHIPSPARE_DEALLOC_RANK Cause Source Notes Detected that an SDRAM SFW is failing on the DIMM The failing DIMM rank is deallocated DIMMs DIMMs Type E0h, 174d:26d MEM_DIMM_TYPE_INCOMPATIBLE Type E0h, 173d:26d MEM_DIMM_SPD_FATAL DIMM type is not compatible with current DIMMs for this platform Detected a fatal error in DIMM serial presence detect (SPD) SFW SFW Troubleshooting the power subsystem 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. There are corresponding LEDs on the diagnostic LED panel for the power supplies. Power supply CRU failures are identified visually by a single green LED that is turned off when one or both of the power supplies fail; logged as an IPMI event by voltage sensor logic; and identified as a power supply CRU failure by iLO3 turning on the appropriate LEDs on the front LED panel. Power subsystem behavior For the server, each bulk power supply CRU provides 800 watts of dc power from a nominal 120 VAC, 50-60 Hz; and 1200 watts from a nominal 240 VAC, 50-60 Hz. The BMC chip located on the system board controls the flow of +12 V dc power to the server CRUs. You can control and display power supply status remotely with the iLO 3 MP pc and ps commands, respectively. Typical power up sequence of the server is as follows: • Power LED on front panel glows steady amber when one or two bulk power supplies are plugged into nominal ac voltage and the +3.3 VDC housekeeping voltage comes on and stays on whenever ac power is present. • The iLO 3, Flash memory, and server intrusion circuits are reset after the +3.3 V dc housekeeping voltage stabilizes. • iLO3 monitors the power button on the front panel. • When the power button is pressed, iLO3 signals the bulk power supplies to fully power up. 88 Troubleshooting

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Table 37 Memory subsystem events that light SID LEDs
Notes
Source
Cause
Sample IPMI Events
Diagnostic
LEDs
Light all DIMM
LEDs in rank 0 of
cell 0
SFW
No DIMMs installed (in
rank 0 of cell 0)
Type E0h, 208d:04d
MEM_NO_DIMMS_INSTALLED
DIMMs
Either EEPROM is
misprogrammed or
this DIMM is
incompatible
SFW
A DIMM has a serial
presence detect (SPD)
EEPROM with a bad
checksum
Type E0h, 172d:04d
MEM_DIMM_SPD_CHECKSUM
DIMMs
Memory rank is
about to fail or
environmental
conditions are
causing more
errors than usual
WIN
Agent
This memory rank is
correcting too many
single-bit errors
Type E0h, 4652d:26d
WIN_AGT_PREDICT_MEM_FAIL
DIMMs
Table 38 Memory subsystem events that may light SID LEDs
Notes
Source
Cause
Sample IPMI Events
Diagnostic
LEDs
The failing DIMM
rank is deallocated
SFW
Detected that an SDRAM
is failing on the DIMM
Type E0h, 4000d:26d
MEM_CHIPSPARE_DEALLOC_RANK
DIMMs
SFW
DIMM type is not
compatible with current
DIMMs for this platform
Type E0h, 174d:26d
MEM_DIMM_TYPE_INCOMPATIBLE
DIMMs
SFW
Detected a fatal error in
DIMM serial presence
detect (SPD)
Type E0h, 173d:26d
MEM_DIMM_SPD_FATAL
DIMMs
Troubleshooting the power subsystem
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. There are corresponding
LEDs on the diagnostic LED panel for the power supplies.
Power supply CRU failures are identified visually by a single green LED that is turned off when one
or both of the power supplies fail; logged as an IPMI event by voltage sensor logic; and identified
as a power supply CRU failure by iLO3 turning on the appropriate LEDs on the front LED panel.
Power subsystem behavior
For the server, each bulk power supply CRU provides 800 watts of dc power from a nominal 120
VAC, 50-60 Hz; and 1200 watts from a nominal 240 VAC, 50-60 Hz. The BMC chip located on
the system board controls the flow of +12 V dc power to the server CRUs. You can control and
display power supply status remotely with the iLO 3 MP
pc
and
ps
commands, respectively.
Typical power up sequence of the server is as follows:
•
Power LED on front panel glows steady amber when one or two bulk power supplies are
plugged into nominal ac voltage and the +3.3 VDC housekeeping voltage comes on and
stays on whenever ac power is present.
•
The iLO 3, Flash memory, and server intrusion circuits are reset after the +3.3 V dc
housekeeping voltage stabilizes.
•
iLO3 monitors the power button on the front panel.
•
When the power button is pressed, iLO3 signals the bulk power supplies to fully power up.
88
Troubleshooting