Specifications

Network Processing Engine Replacement Instructions 35

Removing and Replacing an AC-Input or DC-Input Power Supply

Caution When the power switch on a Cisco uBR7200 series power supply is turned to the OFF (O)

position, the power supply enters a reset cycle for 90 seconds. Wait at least 90 seconds before turning

the power switch back to the ON (|) position. If you do not wait the full 90 seconds, the power supply

does not restart.

Step 2 At the rear of the router, place the power switch on the power supply in the ON (|)

position. Repeat this step if a second power supply is installed in the router. The green

OK LED on the power supply turns on.

Step 3 Listen for the fans; you should immediately hear them operating.

Step 4 During the boot process, observe the system’s LEDs. The LEDs on most of the port

adapters go on and off in an irregular sequence. Some may go on, go out, and go on again

for a short time. On the I/O controller, the IO power OK LED goes on immediately.

Step 5 Observe the initialization process. When the system boot is complete (a few seconds), the

network processing engine begins to initialize the port adapters, Cisco uBR7200 series

cable modem cards, and the I/O controller. During this initialization, the LEDs on each

port adapter behave differently (most ﬂash on and off). The enabled LED on each port

adapter and Cisco uBR7200 series cable modem card goes on when initialization is

completed, and the console screen displays a script and system banner similar to the

following:

Cisco Internetwork Operating System Software

IOS (tm) 7200 Software (C7200-J-M), 11.3(2)T

Compiled Sun 22-Feb-98 06:00 by smith

This completes the procedures for connecting input power and powering up the router. This also

completes the procedure for replacing the network processing engine in a Cisco 7200 series router

or Cisco uBR7200 series router.

Removing and Replacing an AC-Input or DC-Input Power Supply

The weight of power supplies installed in a Cisco 7200 series router might make it difﬁcult for you

to pull the network processing engine from its chassis slot. If this is the case, consider removing

installed power supplies from the chassis and then removing the network processing engine. The

following sections explain how to remove and replace an AC-input or a DC-input power supply in a

Cisco 7200 series router.

Note The network processing engine is installed above the power supplies in a Cisco uBR7200

series router. You do not need to remove the power supplies from a Cisco uBR7200 series router to

pull the network processing engine from its chassis slot.

Caution Do not mix AC- and DC-input power supplies in the same router.

Removing a Power Supply from a Cisco 7200 Series Router

The steps for removing an AC-input and DC-input power supply from a Cisco 7200 series router are

the same. The two power supplies share the same dimensions and faceplates, except for the AC-input

receptacle on the AC-input power supply and the DC-input lead receptacles on the DC-input power

supply.