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Cisco MGX 8950 Hardware Installation Guide
Release 3, Part Number 78-14147-02 Rev. A0, November 2002
Chapter 2 Preparing for Installation
Safety Requirements
Warning
Do not touch the power supply when the power cord is connected. For systems with a power switch,
line voltages are present within the power supply even when the power switch is off and if the power
cord is connected. For systems without a power switch, line voltages are present within the power
supply when the power cord is connected.
Warning
This unit might have more than one power supply connection; all connections must be removed
completely for you to completely remove power from the unit.
Warning
Ultimate disposal of this product should be handled according to all national laws and regulations.
Warning
Only trained and qualified personnel should be allowed to install or replace this equipment.
Warning
This unit is intended for installation in restricted access areas. A restricted access area is where
access can only be gained by service personnel through the use of a special tool, lock and key, or
other means of security, and is controlled by the authority responsible for the location.
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations.
Warning
Use copper conductors only.
Warning
During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly
touch the backplane with your hand or any metal tool, or you could shock yourself.
Maintaining Safety with Electricity
Follow these guidelines when working on equipment powered by electricity:
• Locate the emergency power-off switch for the room in which you are working. Then, if an electrical
accident occurs, you can act quickly to turn off the power.
• Disconnect all power by removing the fuses from the fuse and alarm panel before you:
–
Install or remove a switch
–
Work near power supplies
• Do not work alone if potentially hazardous conditions exist.
• Never assume that power is disconnected from a circuit; always check the circuit.
• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, frayed power cords, and missing safety grounds.