• Ensure that the voltage and frequency of your power source match the voltage and
frequency that appear on the equipment electrical rating label.
• Follow the electrostatic discharge safety practices.
• Disconnect both power supply cords (if necessary) before servicing components.
Note:
Power cords must be disconnected when servicing components that require cold
service.
Safety Symbols
The following symbols might appear in this document. Note their meanings.
Caution:
Risk of personal injury or equipment damage. To avoid personal injury or
equipment damage, follow the instructions.
Caution:
Hot surface. Avoid contact. Surfaces are hot and might cause personal injury if
touched.
Caution:
Hazardous voltages are present. To reduce the risk of electric shock and danger to
personal health, follow the instructions.
Electrostatic Discharge Safety
Devices that are sensitive to electrostatic discharge (ESD), such as the motherboard, PCIe
cards, drives, processors, and memory DIMMs require special handling.
Caution:
The boards and drives contain electronic components that are extremely sensitive to
static electricity. Ordinary amounts of static electricity from clothing or the work
environment can destroy components. Do not touch the components along their
connector edges.
Do the following when handling ESD-sensitive components:
• Use an antistatic wrist strap.
Wear an antistatic wrist strap when handling components such as drive assemblies,
boards, or cards. When servicing or removing server components, disconnect the power
Chapter 5
Preparing the Server for Component Replacement
5-3
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