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Overview of Cisco 2600 Series Power Supplies
Follow these guidelines when working on equipment powered by electricity:
• Locate the room’s emergency power-OFF switch. Then, if an electrical accident occurs, you can
quickly shut the power OFF.
• Before working on the system, turn OFF the power and unplug the power cord.
• Disconnect all power before doing the following:
— Working on or near power supplies
— Installing or removing a router chassis or network processor module
— Performing a hardware upgrade
• Do not work alone if potentially hazardous conditions exist.
• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, and missing safety grounds.
• Never assume that power is disconnected from a circuit. Always check.
• If an electrical accident occurs, proceed as follows:
— Use caution, and do not become a victim yourself.
— Turn off power to the system.
— If possible, send another person to get medical aid. Otherwise, determine the condition of the
victim and then call for help.
— Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when
electronic printed circuit cards are improperly handled and can result in complete or intermittent
failures. Always follow ESD prevention procedures when removing and replacing cards. Ensure that
the router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap,
ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis
frame to safely channel unwanted ESD voltages to ground. To properly guard against ESD damage
and shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground
yourself by touching the metal part of the chassis
Overview of Cisco 2600 Series Power Supplies
Figure 1 shows the typical AC power supply for Cisco 2600 series routers. The DC power supplies
look similar, but have a terminal block cover in place of the three-pronged connector for an AC
power cord.
Figure 2 shows the location of the power supply in a Cisco 2600 series router. In this case an AC
power supply is shown as an example.
Table 1 lists AC power supply specifications, and Table 2 lists DC power supply specifications.
These tables apply to all Cisco 2600 series routers.
Caution For safety, periodically check the resistance value of the antistatic strap, which
should be between 1 and 10 megohms (Mohm).
