Memory DIMM Replacement
To replace a memory DIMM, do the following:
1. Before handling any card, board, or memory DIMM, touch any metal surface of the chassis with one
hand to minimize static electricity discharge. Refer to “Handling Static-Sensitive Devices” on
page 423.
2. If necessary, remove the memory DIMM from its antistatic package.
3. Ensure that the connector locking tabs are pushed out in the unlocked position before installing a new
memory DIMM, as shown in the following illustration.
4. Carefully grasp the memory DIMM along two edges and align the connector.
5. Insert the memory card firmly into the connector.
6. Secure the memory DIMM with the locking tabs located at each end of the DIMM connector, as
shown in the following illustration.
Note:
Memory DIMMs must be installed in groups of 4 (quads).
1
Locking Tabs (unlocked position)
2
Locking Tabs (locked position)
7. Pivot the processor access cover back into the closed position.
8. Grasp the release handles located on top of the processor assembly. Pivot the handle upward to 90
degrees. This action puts the handle cams into the correct position to help seat the processor card
connector into the docking connector located on the CEC backplane.
Attention:
To prevent damage to the processor assembly and the processor card connector, open or
close both release handles at the same time.
9. Align the processor card connector with the docking connector located on the CEC backplane.
10. Carefully insert the processor assembly into the system.
11. As the processor connector is seated into its CEC backplane docking connector, begin lowering the
processor assembly release handles. This action correctly seats and locks the processor assembly to
the CEC backplane.
12. If necessary, replace the processor filler panel.
13. Replace the media device support shelf. Tighten the thumbscrew located on the support shelf.
Note:
When replacing the support shelf, ensure that the lower support leg activates the microswitch
located on the CEC backplane. Failure to do so results in the system not being able to power
on.
14. Replace all removed media drives, ensuring that the media drives removed are returned to the same
media bay locations from which they were removed. Refer to “Media Replacement” on page 469.
15. Reconnect all power and signal cables to their respective media drives.
16. Replace the front bezel as described in “Front Bezel Replacement (Model 6C4)” on page 442 or
“Front Bezel Replacement (Model 6E4)” on page 443.
17. Replace the service access cover as described in “Service Access Cover Replacement (Model 6C4)”
on page 431 or “Service Access Cover Replacement (Model 6E4)” on page 437.
18. On a Model 6C4, push the system drawer back into the operating position as described in “Returning
the Model 6C4 to the Operating Position” on page 430.
19. Power on the system as described in “Starting the System without an HMC Attached” on page 425.
20. If the Model 6C4 has successfully powered on, close the rack doors.
If the Model 6E4 has successfully powered on, close the bezel door.
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pSeries 630 Model 6C4 and Model 6E4 Service Guide
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