Juniper Networks G10 CMTS manual Install Power Supplies, 101

Install Power Supplies

Install Power Supplies

If you order an AC version of the CMTS without power redundancy, the CMTS ships with five AC power supplies installed in domain A. If you order the CMTS with power redundancy, the CMTS ships with 10 AC power supplies installed. DC versions of the CMTS are always shipped with 10 DC power supplies installed.

To install an additional power supply, follow this procedure:

1.Remove the power supply faceplate by pulling the flanges on each side of the faceplate away from the chassis until the faceplate ball studs are removed from the power supply faceplate clips.

2.Remove the power supply filler panel covering the selected bay by loosening the two self-contained screws.

3.If the power supply’s ejector is locked in the vertical position, press down on the ejector release while simultaneously pulling the ejector away from the power supply. The ejector should rest at approximately 45° from the faceplate.

The power supplies and the chassis are mechanically keyed to ensure that the same type of supplies and chassis (AC or DC) are used together. Do not attempt to remove or reconfigure the keys.

4.Each power supply bay has an upper and lower card guide. Align the printed circuit board of the power supply with the bay card guides and slowly slide the power supply into the bay until it comes to a stop (action #1 in Figure 30 on page 102). The inside tabs (the tabs closest to midplane) of the ejector should be resting over the power supply ejector rail.

5.Firmly lift the ejector to the vertical position until the ejector release clicks into position (action #2 in Figure 30). Check that the inside tabs of the ejector extend into the power supply ejector rail. The power supply should be flush with any other installed power supplies.

6.Tighten the upper and lower retainer screws by applying 3 in-lb of torque to each screw.

7.Replace the power supply faceplate by aligning its four ball studs with the four power supply faceplate clips and pressing the faceplate towards the chassis until it snaps into place.

You must replace the power supply faceplate and power supply filler panels prior to powering on the G10 CMTS to ensure that proper air ventilation occurs throughout the chassis, and to reduce EMI emissions.

See “Remove Power Supplies” on page 160 for power supply removal instructions.

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Install the CMTS 101