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Disconnecting an AC Power Cord
WARNING: Before working on the router or near power supplies, unplug the power
cord from an AC router.
To disconnect the AC power cord:
1. Unplug the power cord from the power source receptacle.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see “Preventing Electrostatic Discharge Damage” on page 130.
3. Move the AC switch next to the appliance inlet on the power supply to the off
position (O).
4. Unplug the power cord from the appliance inlet on the power supply.
Connecting an AC Power Supply Cord
To connect the AC power cord:
1. Locate a replacement power cord with the type of plug appropriate for your
geographical location (see “AC Power Cord Specifications” on page 174).
2. Insert the power cord plug into an external AC power source receptacle.
3. Dress the power cord appropriately. Verify that the power cord does not block
the air exhaust and access to router components, or drape where people could
trip on it.
4.
Switch the AC switch on the each power supply to the on position (—) and observe
the status LEDs on the power supply faceplate. If the power supply is correctly
installed and functioning normally, the AC OK and DC OK LEDs light steadily, and
the PS FAIL LED is not lit.
Replacing a DC Power Supply Cable
WARNING: Before performing the following procedures, ensure that power is removed
from the DC circuit. To ensure that all power is off, locate the circuit breaker on the
panel board that services the DC circuit, switch the circuit breaker to the OFF position,
and tape the switch handle of the circuit breaker in the OFF position.
To replace a power cable for a DC power supply:
■ Disconnecting a DC Power Supply Cable on page 120
■ Connecting a DC Power Supply Cable on page 120
Replacing Power System Components ■ 119
Chapter 13: Replacing Hardware Components