Memory DIMM

Use this procedure to service the memory DIMM.

If your system is managed by the Hardware Management Console (HMC), use the HMC to complete the steps for removing the memory DIMM from the server. For instructions, see Exchanging a part using the Hardware Management Console.

1. Power off the system and remove the power cords:

   Power off the system and remove the power cords: Before continuing ensure the device is not being used by the customer. If possible, shut down any running applications and the operating system before powering off the system. After the system is powered off, remove all power cords from all of the processor enclosures, starting with the primary processor enclosure (topmost) and then each secondary enclosure, working from top to bottom.

2. Remove the Front Cover

   Open the front rack door. Loosen the thumbscrew (A) on the right side of the cover. Slide the cover to the right and remove it from the system unit slot (B).

3. Disconnect the SMP Cable

   Carefully pull the handle (A) from the system until the connector is unseated. When the guide pins (B) are free, carefully pull the SMP processor cable away from the system unit. Repeat these steps for all SMP cable connectors that are present on the system you are servicing.

4. Remove the Control Panel or Control Panel Filler

   In the enclosure you are servicing, remove the control panel or, if present, the control panel filler, by pressing the locking tabs (A) on both sides of the panel, grasping the edges, and pulling it out of its bay (B).

5. Remove the Voltage Regulator Assemblies

   Squeeze the top of the latch (A) to release it, then rotate the latch out and then down. Grasp the pull ring (B) and slowly pull the voltage regulator out of the enclosure. NOTE: Pulling the voltage regulator assembly out of the card enclosure requires a large amount of force. The voltage regulator assembly is of substantial weight, so grasp it firmly when it is free of the card enclosure. Repeat these steps until all voltage regulator assemblies have been removed.

6. Remove the System Backplane Assembly

   Note: A shipping support clamp has been installed on your server. Removal is not required. This clamp will not interfere with the drawer front covers or machine operation. If removed, store for re-use when the server is relocated. Push the blue lever to the left and out from the system (A) to unlock the system backplane assembly. Pull the system backplane assembly out of the system using both hands. Attention: The system backplane assembly weighs 35 lbs and should not be pulled out using the blue lever. Grasp the backplane assembly firmly with both hands when it is free of the system.

7. Identify the Failing DIMM

   If you are removing the DIMMs because of a system failure, look at the LEDs (A) located on top of the system processor assemblies to identify the location of the failing DIMMs. To illuminate the location LED for the failing DIMM, press the LED actuator button (B). Attention: The actuator button must be used within 20 minutes after the system backplane assembly is removed from the system. The assembly retains the energy to light the LEDs for 40 seconds after the actuator button has been pressed.

8. Remove the System Processor Assembly

   Unscrew the two blue thumbscrews, pivot the processor alignment face plate out, and then remove it. Pull the locking knobs (A) out to the unlocked position. Push the locking arms (B) down and out to unlock the processor card assembly. Lift the processor card assembly (C) out of the system backplane assembly.

9. Remove the System Processor Assembly Cover

   Unlock the two retaining knobs (A) on the system processor assembly. Slide the cover (B) back. Lift the cover off of the assembly.

10. Remove the Memory DIMM

    Remove the mylar cover, if installed, that is covering the memory DIMMs. Locate the memory DIMM you want to remove. Unlock the memory DIMM by pushing the connector tabs (A) out and then down. The tabs' lever action forces the memory DIMM (B) out of the connector. Lift the memory DIMM out of the connector.

11. Install the Memory DIMM

    Ensure that the connector locking tabs (A) are pushed out into the unlocked position before installing a new memory DIMM. Carefully grasp the memory DIMM (B) along two edges and align it with the connector. Attention: Memory DIMMs are keyed to prevent a DIMM from being installed improperly. Note the locations of the key tabs within the DIMM connector before attempting to install the DIMM. Push the memory DIMM firmly into the connector until the connector locking tabs engage. If you are installing any Tall DIMMs, place the mylar cover over the DIMMs in the processor card to prevent the DIMMs from contacting the lid. NOTE: If you replace Tall DIMMs with regular-sized modules, remove the mylar cover. Failing to remove the mylar cover might restrict airflow in the unit.

12. Install the System Processor Assembly Cover

    Place the cover (B) on the system processor assembly. Lock the two retention knobs (A).

13. Install the System Processor Assembly

    Place the processor assembly (A) into the system backplane assembly, and then lock it into place with the locking arms (B). Press the locking knobs (C) in to the locked position. Install the processor alignment face plate.

14. Install the System Backplane Assembly

    Align the system backplane assembly with the slot in the system. Slide the system backplane assembly into the system (A). Push the blue lever (B) to the right and in toward the system to lock the system backplane assembly.

15. Install the Voltage Regulator Assemblies

    Ensure that the voltage regulator assembly latch (A) is rotated out and down into the unlocked position. Carefully grasp the voltage regulator assembly and slide it into the enclosure. When the voltage regulator assembly is all the way into the card enclosure, rotate the latch (A) up into the locked position. Repeat these steps until all voltage regulator assemblies have been installed.

16. Install the Control Panel or Control Panel Filler

    In the enclosure you are servicing, carefully slide the control panel or, if present, the control panel filler, into the control panel bay (B) until you feel the locking tabs (A) lock in place.

17. Connect SMP Cable

    Align the guide pins (A) with the connectors (B) on the system unit. Using the handle (C), carefully push the SMP processor cable into the system unit connector. Repeat these steps for all SMP cable connectors that are present on the system you are servicing.

18. Install the Front Cover

    Position the cover on the front of the system unit so that the tab on the left side of the cover is in the matching slot (A) on the left side of the system unit. Tighten the thumbscrew (B) on the right side of the cover. Close the front rack door.

19. Install the power cords

    If you removed the power cords, reinstall the power cords for all of the processor enclosures. Install the cords in the following order: Secondary 2 Secondary 3 Primary Secondary 1

20. Verify the repair

    Go to Verifying a repair.