Cisco XR 12406 - Manual (Page 168)

Chapter 5 Maintaining the Router
Removing and Installing the Front Cover
5-4
Cisco XR 12406 Router Installation Guide
OL-13831-01
Step 1 Turn off the power switches (AC) or circuit breaker switches (DC) on the PEMs.
Step 2 Turn off the facility circuit breakers for power source lines connected to the PDU.
Step 3 When the procedure requires that the router be disconnected from source power:
a. AC-powered systems—Unplug the AC power cords from the power outlets.
b. DC-powered systems—Disconnect and remove the source DC wires from the
power connector blocks on the PDU.
Step 4 Verify that the following conditions:
a. LEDs on the PEMs are off.
b. LEDs on the RP, line cards, and alarm cards are off.
c. LEDs on the blower module are off.
Removing and Installing the Front Cover
The front cover has release buttons on both sides that give you the flexibility to
open it from either the left side or from the right side. Use the following
procedures to remove and install the front cover.
Removing the Front Cover
To remove the front cover, grasp both sides of cover and press both release buttons
simultaneously to release the door from its hinges (see
Figure 5-1 ).
Installing the Front Cover
Use the following procedure to install the front cover.
Step 1 Align the hinges on each side of the cover with the hinges on each side of the
chassis (see blowout in
Figure 5-1 )
Step 2 Push the front cover until the hinges snap into place.