Midplane (FRU)

This unit is serviced nonconcurrently.

1. Disconnect the enclosure power cord
   • Disconnect both power cords from the back of the enclosure.
   
2. Remove the DASD backplane
   Note: This part or unit is heavy. Use care when lifting, removing, or installing this part or unit.
   1. Pinch the latches (A) to unlock the handles.
   2. Pull the handles (B) outward in the direction shown to unseat the DASD backplane.
   3. While supporting the bottom of the DASD backplane, slide the DASD backplane out of the enclosure.
   
3. Disconnect both Offline Converter Assembly (OCA) power cords
   1. On the front of both OCAs, slide the power cord holders (A) to the left.
   2. Label and disconnect both OCA power cords (B) from each OCA.
   
4. Remove both Offline Converter Assemblies (OCAs)
   1. Pull the OCA handle (A) all the way down in the direction shown to unseat the OCA.
   2. Grasp both sides of the OCA and pull it out of the enclosure.
      Note: Use 2 hands to support the OCA as it is pulled out of the enclosure.
   3. Repeat these steps to remove both OCAs.
   4. 
5. Remove the IO planar
   1. Pinch the latches (A) to unlock the handles.
   2. Pull the handles (B) outward in the direction shown to unseat the IO planar.
   3. Supporting the bottom of the IO planar, slide the IO planar out of the enclosure.
   
6. Remove the EMC card
   1. Label and disconnect any cables connected to the EMC card.
   2. Pinch the latch (A) to unlock the handle (B).
   3. Pull the handle outward in the direction shown to unseat the EMC card.
   4. Slide the EMC card straight out of the enclosure.
   
7. Remove the power cord plate
   1. Remove the power cord plate at the back of the enclosure by turning thumbscrew (A) in the direction shown.
   2. Pull the plate away from the enclosure.
   3. 
8. Remove the SAS conduit card and midplane
   1. Pull the spring plungers (A) up and turn them one quarter to the left.
   2. Turn the captive screws (B) and (C) counterclockwise until they are completely loosened.
   3. Pull the SAS conduit and midplane component out of the enclosure.
   
9. Remove the midplane
   1. Push the handles (A) down to disengage the SAS conduit card.
   2. Pull the SAS conduit card out of the connectors and remove it from the midplane.
   
10. Install the midplane
    • Install the new midplane by reversing the procedures described above. This completes the procedure.