Cisco Systems ASR 1004 Remove and Then Replace a DC Power Supply

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Note Two power supplies must be installed in the chassis at all times to ensure sufficient cooling. The system fans are inside
the power supply units and must spin for cooling. Because all the system fans can be powered by one power supply, the
second power supply unit does not have to be powered on, but it must be installed.
Caution If you remove a power supply, the system can run for a maximum of five minutes before the system shuts down.
The fans and power elements are independent within the power supply. Therefore, it is not required that the
replacement power supply be energized within five minutes. The only requirement is that the power supply be
installed in the chassis, which energizes the fans and maintains proper system cooling.
Step 6 Grasping the power supply handles, pull the power supply from the chassis.
Step 7 Replace the AC power supply within five minutes or the system will shutdown.
You have removed an AC power supply from the Cisco ASR 1004 Router and now must replace the AC power supply within
five minutes. Follow these steps:
Step 1 Insert another AC power supply in power supply Slot 0 or power supply Slot 1 until it is full seated.
Step 2 Tighten the captive screws. Insert the AC power cable.
Step 3 Plug the power supply cable into the power source.
Step 4 Place the power supply Standby switch in the On (I) position.
Step 5 The power supply LEDs light when power is supplied to the router.
You have completed a live change-out procedure (that is, removing and replacing an AC power supply) for an AC
power supply not operating properly in the Cisco ASR 1004 Router within five minutes
Remove and Then Replace a DC Power Supply
Because of the power supply redundancy, there is no need to power off the Cisco ASR 1004 Router before removing one of the
DC power supplies.
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement
1003
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning Installation of the equipment must comply with local and national electrical codes. Statement 1074
Step 1 Before servicing the power supply, switch the circuit breaker Off in your equipment area.
Step 2 Slip on the ESD-preventative wrist strap that was included in the accessory kit.
Step 3 Switch the power supply circuit breaker switch to Off (O).
Step 4 Locate the terminal block on the rear of the chassis on the power supply.
Step 5 Remove the terminal block plastic cover and then follow these steps:
a. Unscrew the negative cable Kepnut screw, washer, and ground lug, and remove the stud and lead wire.