ProLiant DL140 Generation 2 Server Maintenance and Service Guide

Removal and replacement procedures 12
Server warnings and precautions
WARNING! Hazardous voltages are present inside the server. Always disconnect AC power from the server
and other associated assemblies while working inside the unit. Serious injury may result if this warning is not
observed.
WARNING! To reduce the risk of personal injury from hot surfaces, allow the hot-plug drives and the internal
system components to cool before touching them.
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.
• Disconnect all power cords to completely remove power from the system.
CAUTION: Protect the server from power fluctuations and temporary interruptions with a regulating
uninterruptible power supply (UPS). This device protects the hardware from damage caused by power surges
and voltage spikes and keeps the system in operation during a power failure.
CAUTION: The server must always be operated with the system top cover closed. Proper cooling is not
achieved if the system top cover is removed.
Hardware configuration information
Electrostatic discharge information
An electrostatic discharge (ESD) can damage static-sensitive devices or microcircuitry. Proper packaging and
grounding techniques are necessary precautions to prevent damage. To prevent electrostatic damage, observe
the following precautions:
• Transport products in static-safe containers such as conductive tubes, bags, or boxes.
• Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.
• Cover workstations with approved static-dissipating material. Use a wrist strap connected to the work
surface, and properly grounded (earthed) tools and equipment.
• Keep work area free of nonconductive materials, such as ordinary plastic assembly aids and foam packing.
• Make sure that you are always properly grounded (earthed) when touching a static-sensitive component or
assembly.
• Avoid touching pins, leads, or circuitry.
• Always place drives with the Printed Circuit Board (PCB) assembly-side down.
• Use conductive field service tools.