Cisco AS5350XM Installation Manual page 83

Appendix B Replacing the Power Supply
Replacing the Chassis Cover
Reconnect the AC power cord. Or, if you are using a DC-powered unit, refer to Figure B-18 or
Step 8
Figure B-19, and complete Step a through Step e for each power supply.
The illustration shows the DC power supply terminal block. Wire the DC power supply using the
Warning
appropriate lugs at the wiring end, or with no lugs, as illustrated. The proper wiring sequence is
ground to ground, positive to positive, and negative to negative. Note that the ground wire should
always be connected first and disconnected last. Statement 197
Figure B-18 Connecting DC Power Supply—Single Power Supply
Power switch
To DC source
DC connector
Source A - NEG Ground
Source B - RTN
Source A - RTN
Source B - NEG
Connect the DC connector to the rear of the power supply.
a.
Do not overtorque the terminal block contact screws. The recommended torque is 4.5 lb-in (0.50 N-m).
Caution
Cisco AS5350XM Universal Gateway Chassis Installation Guide
B-13
OL-6417-02