Specifications

AC Power Entry Module for the Cisco uBR10012 Universal Broadband Router

Removing and Replacing an AC PEM

AC Power Entry Module for the Cisco uBR10012 Universal Broadband Router

78-13996-01 Rev. B0

Removing and Replacing an AC PEM

This section contains information on removing and replacing AC PEM modules in the Cisco uBR10012

chassis.

Tip The AC PEM is operating correctly when its Power LED is on (green). When the Fault LED is on

(yellow), the AC PEM is receiving AC-input power but is not providing power to the system. Verify

that the AC PEM is fully inserted into the power bay and that its captive screws have been tightened.

Then flip the power switch on the AC PEM to the standby position, wait several seconds, and then

back to the ON position. If the Fault LED does not go off and the Power LED does not come on,

replace the AC PEM.

Tools and Parts Required

To remove and replace an individual power module, you need the following tools and parts:

• Replacement AC PEM (UBR10-PWR-AC=)

• ESD-preventive wrist strap

• Flat-head screwdriver

Unpacking and Preparing the AC PEM

To unpack the AC PEM, complete the following steps:

Step 1 Open the shipping carton by cutting the packing tape along the flaps on the top of the box.

Step 2 Remove the PEM from the packaging and place it on an anti-static surface.

Step 3 Keep the packaging and the carton so that you can use them to return the old unit being replaced to the

factory. See the “Obtaining Documentation” section on page 23 for more information.

Verifying That the DC Power Connectors Are Not Connected

Each of two power bays in the Cisco uBR10012 chassis is above a DC terminal block that is used to

provide power only when you are using the DC PEM modules. Do not use these DC terminal blocks

when you are using the AC PEMs.

If you have previously used this Cisco uBR10012 router with DC PEMs, first verify that these DC

terminal blocks are not currently connected before proceeding with the installation or replacement of the

AC PEMs. Figure 4 shows the location of the two DC terminal blocks and how to recognize the wires

that might be connected to the blocks.