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Device board 3

  1. Use this procedure to service the Device Board - DB3.

    The Device Board is in location:

    Machine Type:

    Model:

    Serial Number:

    The component will not be serviced concurrently. Power should be removed from the unit containing the FRU in the location field above. If this unit is powered on, power it off now. When the unit is completely powered off, disconnect the AC input source by removing the power cord from the unit. Do not apply power to the unit until directed to do so in this procedure.

  2. Remove the rear cover

    1. Open the cover by grasping its right side (A) and pulling it towards you.

    2. Note: The rear cover will swing open a little more than 90 degrees. This makes it possible to replace all FRUs, without having to remove the cover.

    3. After opening the cover, press down on lever (B), which is located inside along the top, left side of the cover.
    4. Tilt the top of the cover away from the tower, and lift the cover off.

  3. Remove the front cover

    1. Unlock the cover.
    2. Open the cover by grasping its right side (A) and pulling it towards you.

    3. Note: The front cover will swing open a little more than 90 degrees. This makes it possible to replace all FRUs, without having to remove the cover.

    4. After opening the cover, press down on lever (B), which is located inside along the top, left side of the cover.
    5. Tilt the top of the cover away from the tower, and lift the cover off.

  4. Remove the EMC access plate from the disk unit enclosure

    Press the latching mechanism (A) together and tilt the top of the access plate away from the frame to remove it.

  5. Remove the PCI card cage assembly cables

    1. Label (if necessary) and disconnect the SCSI cables (A) from the top of the DASD controller cards.
    2. Label (if necessary) and disconnect the external cables from the PCI cards.

  6. Remove the PCI card cage assembly

    1. Remove the six screws (A).
    2. Pull the PCI card cage assembly partially out of the frame while holding the cables away from the assembly.
    3. Press the release mechanism (B) and carefully slide the assembly out of the frame.

  7. Remove the bulkhead cover

    1. Remove the two screws (A) from the bulkhead cover located inside the frame and directly above the power distribution board.
    2. Remove the bulkhead cover from the frame.
    3. Reach through the opening where the bulkhead cover was removed from and label (record the locations of) all cables that are connected to the rear of the device board assembly (DB3).
    4. Disconnect all cables that are connected to the rear of the device board assembly (DB3).

  8. Remove the removable media unit

    From the front of the expansion tower, note the removable media locations and remove them by pulling out on the handles (A) located on each side of the unit and sliding the unit straight out of the enclosure.

  9. Remove the display panel

    1. Remove the display panel by pulling out on the two side handles (A) and sliding the display panel partially out of the frame.
    2. Disconnect the cable (B) that is attached to the rear of the display panel.
    3. Remove the display panel from the frame.

  10. Remove the removable media enclosure

    1. Unplug the other end of the display panel cable from the base device board assembly (DB3) and set the cable aside.
    2. Remove the two screws (A) that hold the removable media enclosure to the frame.
    3. Remove the two long retaining screws (B) that are located inside of the removable media enclosure (the top right and lower left corners).
    4. Remove the removable media enclosure by sliding it straight out of the frame.

  11. Record the disk unit locations

    1. Record the locations of the disk units that are currently installed in the DB3 device board.
    2. Label each disk unit in the DB3 device board with the appropriate location. Valid disk unit locations for DB3 include D31, D32, D33, D34, D35, D36, D37, D38, D39, D40, D46, D47, D48, D49, and D50.

    Note: Use the following disk unit removal procedures to remove all the disk units in the DB3 deviceboard.

  12. Remove the disk unit

    1. Pinch the two surfaces of the latching mechanism together and pull the handle (A) towards you to release the disk unit from the slot.
    2. Remove the disk unit from the tower by sliding it straight out of the enclosure.

  13. Remove the disk unit enclosures

    1. Remove the four screws (A) that hold the disk unit enclosure to the frame.
    2. Remove the two long retaining screws (B) that are located inside the disk unit enclosure (the top right and bottom left corners).
    3. Remove the disk unit enclosures covering the DB3 board by sliding them straight out of the frame.

  14. Remove the DB3 device board shelf

    1. Remove the two screws (A) that hold the center support bracket to the frame.
    2. Remove the three screws (B) that hold the device board shelf in front of DB3 to the frame.
    3. Remove the center support bracket and DB3 device board shelf by pulling them out of the unit.

  15. Remove the DB3 device board assembly

    Remove the DB3 base device board assembly (A) by tilting the top towards you, then pulling the device board assembly out of the frame.

  16. Install the DB3 device board assembly

    Install the DB3 base device board assembly (A) by tilting the top towards you, then horizontally sliding the board into the frame as you rotate the bottom of the board downward.

  17. Install the DB3 device board shelf

    1. Slide the DB3 device board shelf into the unit.
    2. Install the three screws (B) that hold the device board shelf to the frame.
    3. Slide the center support bracket into the unit.
    4. Install the two screws (A) that hold the center support bracket to the frame.

  18. Install the disk unit enclosures

    1. Install the disk unit enclosures in front of the DB3 board, making sure to line up the guide pins when sliding the enclosures into the frame.
    2. Install the two long retaining screws (B) inside of the disk unit enclosure (the top right and bottom left corners).
    3. Install the four screws (A) that hold the disk unit enclosure to the frame.

  19. Install the disk unit

    Install the disk unit in the proper location in the disk unit enclosure by sliding it in with the handle (A) down, then pushing the handle upward to lock it into place.

  20. Install the removable media enclosure

    1. Install the removable media enclosure, making sure to line up the guide pins when sliding the enclosure into the frame.
    2. Install the two long retaining screws (B) inside of the removable media enclosure (the top right and lower left corners).
    3. Install the two screws (A) that hold the removable media enclosure to the frame.
    4. Connect one end of the display panel cable to the base device board assembly (DB3).

  21. Install the display panel

    1. Slide the new display panel assembly partially into the frame by pushing in on the handles (A) on each side of the assembly.
    2. Connect the end of the display panel cable (B) to the rear of the display panel.
    3. Install the display panel by pushing in on the handles (A) on each side of the assembly and sliding it into the enclosure.

  22. Install the removable media unit

    Install the removable media unit by pushing in on the handles (A) on each side of the unit and sliding it into the enclosure.

  23. Install the bulkhead cover

    1. From the rear of the expansion tower, reach through the opening directly above the power distribution board (where the bulkhead cover was removed from) and reconnect the cables to the rear of the device board assembly (DB3).
    2. Install the bulkhead cover.
    3. Install the two screws (A) in the bulkhead cover.

  24. Install the PCI card cage assembly

    1. Carefully slide the PCI card cage assembly into the frame, while holding the cables away from the assembly.
    2. Push the PCI card cage assembly into the frame so that the screw holes in the assembly line up with the screw holes in the frame.
    3. Install the six screws (A).

  25. Install the PCI card cage assembly cables

    1. Connect all SCSI cables (A) to the top of the DASD controller cards.
    2. Connect the external cables to the PCI cards.

  26. Install the EMC access plate in the disk unit enclosure

    1. Align the two tabs in the EMC access plate with the two notches in the disk unit enclosure.
    2. Push the top of the access plate towards the frame until the latching mechanism (A) engages.

  27. Install the front cover

    1. Tilt the top of the cover towards you while inserting the lower corner pin (A) into the lower hole in the cover.
    2. Tilt the top of the cover towards the tower until the spring loaded upper pin (B) seats into the upper hole in the enclosure.
    3. Grasp the right side of the cover and push it towards the frame to close it.

  28. Install the rear cover

    1. Tilt the top of the cover towards you while inserting the lower corner pin (A) into the lower hole in the cover.
    2. Tilt the top of the cover towards the tower until the spring loaded upper pin (B) seats into the upper hole in the enclosure.
    3. Grasp the right side of the cover and push it towards the frame to close it.
Parent topic: 5094, 5294, 5096, and 5296 removal and replacement procedures
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Last updated: Fri, Oct 30, 2009