6.3 Replacing DPU Card Cage PCBs
6.3.3 Replacing PE Array and Router PCBs
To replace PE array or router PCBs, follow these steps:
1.
Turn off the system, as described in Chapter 1.
2.
Open the DPU rear door.
3.
Loosen the captive screws at the top and bottom of the PCB faceplate.
4.
Use the ejector levers shown in Figure 6–4 to release the PCB and move it
outward from its slot.
5.
Remove the lower PCB retainer bar.
6.
Carefully remove the PCB from its slot, handling it by the edges, and place it
in a static-proof container.
7.
Carefully slide the replacement PCB into the slot.
8.
With the ejector levers open (out), seat the PCB, and push the levers closed.
Although you may have to push firmly to seat the PCB, do not force it.
9.
Secure the PCB in the card cage, tightening the captive screws on the top and
bottom of faceplate.
10. Install the lower PCB retainer bar.
11. Close and latch the DPU rear door.
12. From the front, open the DPU front door(s), and make sure that the DPU
backplane jumpers are installed correctly, as described in Chapter 7.
13. Close the DPU front door(s).
14. Turn on the power to the DPU, as described in Chapter 1.
Note
When removing the PE PCBs and the router PCBs, make sure that the
slot number that the PCB was removed from is noted on the defective
module tag.
6–10 Removal and Replacement Procedures
