Cisco AS5400HPX Installation Manual page 70

Appendix A Replacing Memory Components
Replacing the Chassis Cover
Power ON the universal gateway.
Step 8
The internal power supply fan should turn on.
Caution Do not connect the 48 VDC wire to the chassis. A single-point ground is recommended.
Cisco AS5400 Universal Gateway Chassis Installation Guide
A-16
OL-2847-02 0A