Replacing a DIMM

To replace a DIMM, you must locate it in the controller module using the DIMM map on the inside of the controller module or locating it using the LED next to the DIMM, and then replace it following the specific sequence of steps.

Steps

  1. If you are not already grounded, properly ground yourself.
  2. Remove the applicable riser.


    Air duct cover
    Riser 1 and DIMM bank 1-4
    Riser 2 and DIMM bank 5-8 and 9-12
    Riser 3 and DIMM 13-16
    • If you are removing or moving a DIMM in bank 1-4, unplug the NVRAM battery, unlock the locking latch on Riser 1, and then remove the riser.
    • If you are removing or moving a DIMM in bank 5-8 or 9-12, unlock the locking latch on Riser 2, and then remove the riser.
    • If you are removing or moving a DIMM in bank 13-16, unlock the locking latch on Riser 3, and then remove the riser.
  3. Note the orientation of the DIMM in the socket so that you can insert the replacement DIMM in the proper orientation.
  4. Slowly push apart on the two DIMM ejector tabs, on either side of the DIMM to eject the DIMM from its slot, and then slide it out of the socket and set it aside.
    Attention: Carefully hold the DIMM by the edges to avoid pressure on the components on the DIMM circuit board.
  5. Remove the replacement DIMM from the antistatic shipping bag, hold the DIMM by the corners, and align it to the slot.
    The notch among the pins on the DIMM should line up with the tab in the socket.
  6. Make sure that the DIMM latches on the connector are in the open position, and then insert the DIMM squarely into the slot.
    The DIMM fits tightly in the slot, but should go in easily. If not, realign the DIMM with the slot and reinsert it.
    Attention: Visually inspect the DIMM to verify that it is evenly aligned and fully inserted into the slot.
  7. Push carefully, but firmly, on the top edge of the DIMM until the latches snap into place over the notches at the ends of the DIMM.
  8. Reinstall any risers that you removed from the controller module.
    If you removed the NVRAM riser, Riser 1, make sure that you plug the NVRAM battery into the controller module.
  9. Close the air duct.