DETAILED STEPS
Step 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.
Step 2
Slip on the ESD-preventive wrist strap that was included in the accessory kit.
Step 3
Switch the power supply circuit-breaker switch to the Off (O) position.
Step 4
Pull the terminal block plug connector out of the terminal block head in the power supply. See the following figure.
Step 5
Loosen the captive screws on the DC power supply.
Step 6
Grasp the power supply handle. Simultaneously press the power supply lock towards the left and pull the power supply
out from the chassis while supporting it with the other hand.
Figure 27: Removing the DC Power Supply Module
Installing the AC Power Supply Module
Follow these steps to install the AC power supply module:
Cisco ASR-920-12SZ-IM Aggregation Services Router Hardware Installation Guide
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Installing the Cisco ASR 920 Series Router
Installing the AC Power Supply Module
