HP AMS DL320 - Manual (Page 56)

Troubleshooting 56
Warnings and cautions
WARNING: Only authorized technicians trained by HP 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, 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 server.
49-109 kg
100-240 lb
WARNING: To reduce the risk of personal injury or damage to the equipment:
• Observe local occupation health and safety requirements and guidelines for
manual handling.
• Obtain adequate assistance to lift and stabilize the chassis during installation or
removal.
• The server is unstable when not fastened to the rails.
• When mounting the server in a rack, remove the power supplies and any other
removable module to reduce the overall weight of the product.
CAUTION: To properly ventilate the system, you must provide at least 7.6 cm (3.0 in) of clearance at the
front and back of the server.
CAUTION: The server is designed to be electrically grounded (earthed). To ensure proper operation, plug
the AC power cord into a properly grounded AC outlet only.
Preparing the server for diagnosis
1. Be sure the server is in the proper operating environment with adequate power, air conditioning,
and humidity control. Refer to the server documentation for required environmental conditions.
2. Record any error messages displayed by the system.
3. Remove all diskettes and CDs from the media drives.
4. Power down the server and peripheral devices if you will be diagnosing the server offline. Always
perform an orderly shutdown, if possible. This means you must: