Cisco Asr-920-24Sz-Im, Asr-920-24Sz-M, Asr-920-24Tz-M Aggregation Services Router Hardware Installation - Cisco ASR-920-24SZ-IM Hardware Installation Manual

Installing the Router
The Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router power supplies are
Note
hot-swappable. If you have installed redundant power supplies, you can replace a single power supply
without interrupting power to the router.
To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power
Caution
supply has been removed or replaced.
When installing or replacing the unit, the ground connection must always be made first and disconnected
Warning
last. Statement 1046
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Statement 1003
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Statement 1030
Installation of the equipment must comply with local and national electrical codes. Statement 1074
Warning
Follow these steps to remove and replace the DC power supply on the Cisco ASR 920-24SZ-IM,
ASR-920-24SZ-M, ASR-920-24TZ-M Router:
SUMMARY STEPS
1. Before servicing the power supply, switch off the circuit breaker in your equipment area. As an additional
precaution, tape the circuit-breaker switch in the Off position.
2. Slip on the ESD-preventive wrist strap that was included in the accessory kit.
3. Switch the power supply circuit-breaker switch to the Off (O) position.
4. Pull the terminal block plug connector out of the terminal block head in the power supply.
5. Loosen the captive screw on the DC power supply. See the figure below.
6. Grasping the power supply handle with one hand, pull the power supply out from the chassis while
supporting it with the other hand.
7. Replace the DC power supply within 5 minutes. See Installing a DC Power Supply figure. If the power
supply bay is to remain empty, install a blank filler plate (Cisco part number 800-39165-01) over the
opening, and secure it with captive installation screws.

Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation

Removing and Replacing a DC Power Supply
Guide
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