HP DL740 - ProLiant - 4 GB RAM User Manual page 258

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
No 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.
The system may have recorded a temperature
violation.
A short circuit may have occurred.
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).
HP ProLiant DL740 Server User Guide
Troubleshooting Information
The Next Step
Reseat the component represented
by the system interconnect LED.
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.
Reseat the server modules.
Check for bent pins on the
midplane.
Verify that the power supplies are
functioning properly.
continued
E-7