LED behavior
Table 7 LED behavior and possible reasons and solutions
Possible solutionsPossible reasonsIssue
Power supply LED is off
• Be sure that the power cord is
connected to the power supply.
• The power cords are not connected, or AC
power is not available.
• •The power supply might not be inserted
properly, it might have a damaged connector,
or it might have failed.
Be sure that the power supply is
undamaged and fully seated.
• Be sure that all pins on the
connectors and components are
straight.
• Contact an authorized service
provider for assistance
(“Contacting HP” (page 49)").
• The fan might not be inserted properly, it might
have a damaged connector, or it might have
failed.
Fan LED is off
• Be sure that the fan is undamaged
and fully seated.
• Be sure that all pins on the
connectors and components are
straight.
• Contact an authorized service
provider for assistance
(“Contacting HP” (page 49)").
• The I/O module might not be inserted properly,
it might have a damaged connector, or it might
have failed.
I/O LED is amber
• Be sure that the I/O module is
undamaged and fully seated.
• Be sure that all pins on the
connectors and components are
straight.
• See “7-segment display status
codes and actions” (page 42) for
specific steps.
• Contact an authorized service
provider for assistance
(“Contacting HP” (page 49)").
System power LED is off
• Press the Power On/Standby
button and hold for approximately
3 seconds.
• The Power On/Standby button was not
pressed firmly or held long enough.
• The power supply might not be inserted
properly, it might have a damaged connector,
or it might have failed.
• Be sure that the power supply is
undamaged and fully seated.
• The system might have experienced a short. • Be sure that all pins on the
connectors and components are
straight.
• The controller firmware might be corrupted.
• The system power block might need to be
replaced.
• Be sure that all components are
fully seated.
• Flash the controller firmware.
• Contact an authorized service
provider for assistance
(“Contacting HP” (page 49)).
LED behavior 41
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