HP ProLiant DL740 Server - Manual (Page 258)

Troubleshooting Information
Table E-3: Are all of the System Interconnect Status LED Indicators Off?
Refer to “System Interconnect LED Indicators” in Appendix D.
IMPORTANT: To prevent damage to critical system components, the ProLiant DL740 server
will not power up if certain components are not installed or are installed incorrectly. The
system interconnect LEDs provide a closed-loop checking mechanism for verifying proper
component mating between critical server components.
Answer Possible Reasons The Next Step
If a system interconnect LED corresponding to a
component or module is on, then the
corresponding component or module is missing
or is not seated properly.
The components can include any processor
board, a fan, or the I/O board.
Reseat the component represented
by the system interconnect LED.
The system may have recorded a temperature
violation.
A short circuit may have occurred.
Check for bent pins on the
midplane and power supply, which
may have caused a short.
Verify that the fans are working
properly.
Check the IML as soon as possible
to view messages that indicate
which component caused the
shutdown.
No
A power supply may have stopped providing
adequate power as per system specifications.
The system may have experienced a short.
A reboot may have been initiated by means of
Automatic Server Recovery (ASR-2).
Reseat the server modules.
Check for bent pins on the
midplane.
Verify that the power supplies are
functioning properly.
continued
HP ProLiant DL740 Server User Guide E-7
HP CONFIDENTIAL
Writer: Anna Roberts File Name: o-appe Troubleshooting Information.doc
Codename: Expedition Part Number: 270854-002 Last Saved On: 6/17/03 2:41 PM