
Power Distribution Box Installation Guide
H3C S7503-S7506-S7506R Ethernet Switches
1-10
Step 2: Turn off the power switch on the chassis. If an AC power
distribution box is used, unplug AC power cable from the chassis; if a
DC power distribution box is used, unplug the DC power cable.
Step 3: Unscrew the captive screws (as shown in Figure 1-12) on
the power modules on the front panel of the chassis with a screwdriver,
remove the air filter, and pull out the power modules by the handle
behind the air filter.
Step 4: Unscrew the grounding screw on the power distribution
box at the back of the chassis with a screwdriver and remove the
ground wire.
Step 5: Unscrew the four captive screws on the power distribution
box at the rear of the chassis with a screwdriver.
Step 6: Pull out the power distribution box from the rear of the
chassis along the slot. If you find it difficult to pull out the power
distribution box, reach for it through the power module slot from the
front of the chassis and push it out.
Caution:
It is difficult to remove a power distribution box with a power module
plugged into it; therefore, remove power modules before removing the
power distribution box.