Cisco Systems manual Cisco uBR10012 Router DC PEM Power Switches On Position

Chapter 3 Installing the Cisco uBR10012 Router

Powering On the System

Figure 3-48 Cisco uBR10012 Router DC PEM Power Switches (On Position)

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Step 5 Verify that all LEDs are lighting properly:

a.The Power LED on each DC PEM should light (green), indicating that DC power is being received and is being delivered to the chassis.

If the other LEDs on the PEM (Miswire or Fault) light (yellow), see the “Removing the DC Power Entry Modules” section on page 3-6or “Removing the AC Power Entry Module” section on page 3-7.

b.Listen to the fans as power is applied. When you first apply power to the chassis, the fans in the fan assembly module initially operate at high speed, but if all four fans are operating correctly, and if the temperature of the chassis is in the nominal operating range, the fans will slow down to their normal operating speed.

c.The OK LED on the fan assembly module should light (green), indicating that all fans in the blower are operating properly. You should be able to feel air being taken in at the bottom front of the chassis and being blown out at the top rear of the chassis (see Figure 2-1 on page 2-6).

If either the Single Fan Failure or Multiple Fan Failure LED lights (yellow), see the “Removing the Fan Assembly” section on page 3-9.

d.The Fail LED on each PRE module should light (yellow) briefly during the power-on sequence but then should turn off.

If the Fail LED does not turn off on either PRE, verify that the ejector levers are fully closed and that the captive screws have been tightened. If necessary, remove the PRE from the chassis and reinsert it or replace it (see the “Removing and Replacing the PRE Module” section on page 5-28).

When the power-on sequence is complete, the PRE begins to initialize the line cards. Continue with the next section, “Configuring the Cisco uBR10012 Router at Startup,” to configure the line cards.

	Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
OL-18259-01		3-61