Power Distribution Box Installation Guide
H3C S7503-S7506-S7506R Ethernet Switches
1-12
1.6 Removing a DC Power Cable
Caution:
Power off the switch before installing a DC power cable.
Step 1: Wear an ESD-preventive wrist strap.
Step 2: Disconnect the switch from the DC power source.
Step 3: Unscrew the captive screws on the grounding screw lid
on the DC power distribution box and open the lid.
Step 4: Loosen the captive screw on the -48 V terminal with a
socket wrench. Remove the -48 V terminal (with blue lead) of the DC
power cable. Then, fasten the captive screw.
Step 5: Loosen the captive screw on the RTN terminal with a
socket wrench. Remove the RTN terminal (with black lead) of the DC
power cable. Then, fasten the captive screw.
Step 6: Cover the connector lid and fasten the captive screws.