Install The Dc Power Supply - Cisco ASR-920-20SZ-M Hardware Installation Manual

Install the DC Power Supply

Procedure
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.
Step 5 Loosen the captive screw on the DC power supply. See the figure below.
Figure 28: Remove the DC Power Supply
Caution
Step 6 Grasping the power supply handle with one hand, pull the power supply out from the chassis while supporting
it with the other hand.
Step 7 Replace the DC power supply within 5 minutes.
Install the DC Power Supply
Procedure
Step 1
Ensure that the system (earth) ground connection has been made. For ground connection installation instructions,
see the Installing the Chassis Ground Connection section.
Step 2
If present, remove the blank power supply filler plate from the chassis power supply bay opening by loosening
the captive installation screws.
Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide
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Do not use the captive installation screw to pull out the power supply.
Replace the Power Supply