Installation guide

Safety Information
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Cisco 1750 Router Hardware Installation Guide
78-6169-02
Warning Before opening the chassis, disconnect the telephone-network
cables to avoid contact with telephone-network voltages.
Warning Do not work on the system or connect or disconnect cables during
periods of lightning activity.
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 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 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.
Warning Only trained and qualified personnel should be allowed to install
or replace this equipment.
Warning Hazardous network voltages are present in WAN ports regardless
of whether power to the router is OFF or ON. To avoid electric
shock, use caution when working near WAN ports. When
detaching cables, detach the end away from the router first.
Warning During this procedure, wear grounding wrist straps to avoid ESD
damage to the router. Do not directly touch the backplane with
your hand or any metal tool, or you could shock yourself.