HP Netserver Service Handbook, Volume 3 - High-End

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Power Supply Status LED Definition
LED color One PSM Two PSMs Three PSMs
Green OK OK OK
Yellow Power cage
temperature warning
Power cage
temperature warning
Power cage temperature warning,
or one PSM LED indicator is red or
yellow
Red
Power cage
temperature is critical,
or one PSM LED
indicator is red or
yellow
Power cage
temperature is critical,
or one PSM LED
indicator is red or
yellow
Power cage temperature is critical,
or two PSM LED indicators are red
or yellow
Cooling Fan Status LED Definition
LED Color Description
Green OK
Red
One or more internal cooling fans have failed (this does not include power supply
module fans)
Covers
CAUTION Internal and external NetServer covers provide proper cooling airflow. To ensure
data integrity, all covers must be in place, regardless of the external environment
(stand-alone or rack-mounted) or temperature (e.g. air conditioned). Even at low
room temperatures, ensuring that all covers and panels are in place provides
controlled airflow and system reliability. This does not include the front doors, which
may be removed without risk.
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