Cisco ASR 903 Quick Start Manual page 17

Procedure
Step 1 Ensure that the system (earth) ground connection has been made. For ground connection installation instructions, see
Installing the Chassis Ground Connection section in the Cisco ASR 903 and ASR 903U Aggregation Services Router
Hardware Installation Guide.
Step 2 If necessary, remove the blank power supply filler plate from the chassis power supply bay opening by loosening the
captive installation screws.
Step 3 Grasp the power supply handle with one hand. Place your other hand underneath the power supply, as shown in the figure
below. Slide the power supply into the power supply bay. Make sure that the power supply is fully seated in the bay.
Figure 12: Installing the A900-PWR550-A AC Power Supply
17