Chapter 2 Preparing for Installation
Safety Guidelines
Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051
Safety with Electricity
Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. Statement 12
Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Statement 43
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003
Warning Read the installation instructions before connecting the system to the power source. Statement 1004
Warning This product relies on the building’s installation for
Warning This product relies on the building’s installation for
Warning There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions. Statement 1015
Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017
Cisco ASR 903 Router Hardware Installation Guide
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