6.3 Replacing DPU Card Cage PCBs
6.3.2 Replacing Front-End VME Interface PCB
To replace the front-end VME interface PCB, follow these steps:
1.
Turn off the system, as described in Chapter 1.
2.
Open the DPU rear door.
3.
Disconnect the 100-pin AMP connector on the PCB faceplate.
4.
Remove the upper PCB retainer bar.
5.
Loosen the captive screws at the top and bottom of the PCB faceplate.
6.
Use the ejector levers shown in Figure 6–4 to release the PCB and move it
outward from its slot.
7.
Carefully remove the PCB from its slot, handling it by the edges, and place it
in a static-proof container.
8.
Carefully slide the replacement PCB into the slot.
9.
With the ejector levers open (out), seat the PCB, and push the levers closed.
Although you might have to push firmly to seat the PCB, do not force it.
10. Secure the PCB in the card cage, tightening the captive screws on the top and
bottom of the faceplate.
11. Install the upper PCB retainer bar.
12. Reconnect the 100-pin AMP connector to the front of the PCB.
13. Close and latch the DPU rear door.
14. Turn on the power to the DPU, as described in Chapter 1.
Removal and Replacement Procedures 6–9