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17.4.1 Accessing the Operation Panel


17.4.1 Accessing the Operation Panel
  1. Check the BB-ID switch on the operation panel and record the BB-ID set for the crossbar box requiring maintenance.
  2. Remove the front cover of the crossbar box.
    For details, see "5.5.2 Removing the Front Cover."
  3. Remove all the fan units.
    For details, see "15.3.2 Removing a Fan Unit."
  4. Loosen the two screws (A in Figure 17-2) securing the upper cover, and slide the right and left stoppers (B in Figure 17-2) inward. Then, remove the upper cover (C in Figure 17-2).
Figure 17-2  Removing the Upper Cover
Figure 17-2  Removing the Upper Cover
  1. Loosen the one screw (A in Figure 17-3) securing the lower cover, and slide the lower cover to the left to remove it.
Figure 17-3  Removing the Lower Cover
Figure 17-3  Removing the Lower Cover
  1. Disconnect the two cables from the fan shelf.
    Keep the disconnected cables together in the center of the shelf.
Figure 17-4  Removing the Cables
Figure 17-4  Removing the Cables
  1. Loosen the three screws securing the fan shelf and partially pull out the fan shelf.
Figure 17-5  Removing the Fan Shelf
Figure 17-5  Removing the Fan Shelf
  1. Place a hand under the fan shelf to support it, and carefully remove it from the chassis.
Note - Remove the fan shelf while paying careful attention to the two cables arranged in the center.
Note - Place the removed fan shelf on a grounded antistatic ESD mat.