1.Remove the two grounding screws from the rear panel of the chassis.

2.Attach the grounding screw to the OT terminal of the grounding cable.

3.Use a Phillips screwdriver to fasten the grounding screw into the grounding screw hole.

4.Connect the other end of the grounding cable to the grounding strip of the rack.

Figure 10 Connecting the grounding cable to the grounding hole of router

IMPORTANT:

•The resistance reading should be smaller than 5 ohms between the chassis and the ground.

•To guarantee the grounding effect, use the grounding cable provided with the router to connect to the grounding strip in the equipment room as long as possible.

Installing a power module

Each of an HSR6802 and an HSR6804 router provides two power module slots. An HSR6808 router provides four power module slots. Slots except the Slot 1 (PWR1) are provided with filler panels. The routers support both AC (PSR650-A and PSR1200-A) and DC (PSR650-D and PSR1200-D) power modules, but AC and DC power modules cannot work together. The power modules in use must be of the same specification.

Before you install the power module, make sure the power switch is off and the grounding cable is well grounded.

The procedures for installing power modules are the same. This section uses a PSR650-A as an example. To install a power module:

1.Face the front of the router and locate the slot to be used.

2.Loosen the captive screws with a Phillips screwdriver to remove the filler panel from the slot. Keep the removed filler panel for future use.

Skip this step if you install the power module to the PWR1 slot.

3.Holding the handle of the power module with one hand and supporting the bottom of the power module with the other hand, insert the power module slowly along the slide rails until it makes close contact with the backplane.

4.Use a Phillips screwdriver to fasten the captive screws on the two sides of the power module.

For more information about the power module LED description, see "Power module LEDs."

14