Warnings and cautions
WARNING: Only authorized technicians trained by Hewlett Packard Enterprise should attempt to
repair this equipment. All troubleshooting and repair procedures are detailed to allow only
subassembly/module-level repair. Because of the complexity of the individual boards and
subassemblies, no one should attempt to make repairs at the component level or to make
modifications to any printed wiring board. Improper repairs can create a safety hazard.
WARNING: To reduce the risk of personal injury or damage to the equipment, consult the safety
information and user documentation provided with the server before attempting the installation.
Some servers contain high energy circuits, high current circuits, moving parts (such as fan blades),
or any combination of these hazards, that may be exposed if covers and access panels are
removed while the product is connected to a power source. These products are intended to be
serviced only by qualified personnel who have been trained to deal with these hazards. Do not
remove enclosures or attempt to bypass any interlocks designed to guard against these hazardous
conditions.
WARNING: To reduce the risk of personal injury or damage to the equipment, be sure that:
• The leveling feet are extended to the floor.
• The full weight of the rack rests on the leveling feet.
• The stabilizing feet are attached to the rack if it is a single-rack installation.
• The racks are coupled together in multiple-rack installations.
• Only one component is extended at a time. A rack may become unstable if more than one
component is extended for any reason.
WARNING: To reduce the risk of electric shock or damage to the equipment:
• Do not disable the power cord grounding plug. The grounding plug is an important safety feature.
• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
times.
• Unplug the power cord from the power supply to disconnect power to the equipment.
• Do not route the power cord where it can be walked on or pinched by items placed against it.
Pay particular attention to the plug, electrical outlet, and the point where the cord extends from
the compute module.
Troubleshooting preparation 13