Cisco NCS 4000 Series Hardware Installation page 266

Removing an AC or DC Power Module
Procedure
Step 1 Release the snap hook on the power module.
Step 2 Slide the power module out of its bay in the power tray while supporting it with your other hand. Use the
handle available on the front plate of the power module.
Figure 125: Removing a Power Module from a Power Tray
Hardware Installation Guide for Cisco NCS 4000 Series
246
Removing and Replacing Chassis Components