Connecting the Ground Wire, AC-input power supply

3Com Router 3000 ADSL2+ Family	2. Installing the Router
Installation Guide

2.3 Connecting the Ground Wire

Caution:

Properly connect the ground wire before connecting other cables and shorten it as much as possible to prevent the router and the connected device from getting damaged during periods of lightning activities.

The grounding screw of the chassis PGND is located on the rear panel. Connect this screw to the earth ground using a ground wire. The grounding resistance must not be greater than 5-ohm.

2.4 Connecting the Power Cord

2.4.1 AC-input power supply

The Router 3040/3041 external AC-input power supply is provided with these specifications:

zInput rated voltage: 100 to 240 V a.c., 50 to 60 Hz

zMax. input tolerance: 90 to 264 V a.c., 50 to 60 Hz

zInput current: 0.5 to 1A

zOutput voltage: 12 V d.c.

zOutput current: 4 A

Figure 2-2 illustrates the power supply:

Figure 2-2Power supply

2.4.2 Connecting the AC-input power cord

Step 1: Put the power switch of the router in OFF position.

Step 2: Connect the output of the power supply to the power input on the rear panel of the router, and then insert the input connector of the power supply into an AC power outlet.

Step 3: Put the power switch of the router in ON position.

Step 4: Check that the PWR LED on the front panel of the router is ON. If the LED is OFF, repeat steps 2 through 4.

2-3

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