HP LH4r HP Netserver Service Handbook, Volume 3 - High-End - Page 8
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Power Supply Status LED Definition LED color Green Yellow Red One PSM OK Power cage temperature warning Power cage temperature is critical, or one PSM LED indicator is red or yellow Two PSMs OK Power cage temperature warning Power cage temperature is critical, or one PSM LED indicator is red or yellow Three PSMs OK Power cage temperature warning, 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. Top cover 2
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