Figure 2

Power Supply

∙ You can install a second power supply into a T1 Modem Bank that already has an existing power supply installed without having to power-down the T1 Modem Bank.

Wear a grounding strap while performing this procedure to prevent electrical discharge.

Avoid touching the fan during this procedure since the fan blade could cause harm.

When handling the power supply printed circuit board, do not touch the edge connector that connects to the distribution board because damage to the board may result.

1.If the display panel faceplate on the T1 Modem Bank is closed, loosen the two captive screws on the display panel faceplate; carefully pull down the hinged display panel faceplate.

2.Slide the power supply into an available slot. It may be necessary to apply some force to properly seat the power supply.

3.Use the ON/OFF switch at the back of the T1 Modem Bank to power it up if it is not already powered-up. If you installed a second power supply into a unit while the unit was powered-up, no reset is needed because hot swap capabilities are integrated on power supplies.

4.It may take a few seconds for the LED on the power supply board to light to indicate that the power supply is operational.

Hardware Installation

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Digi 90031300 manual Power Supply