Replacing Dimm Fillers - IBM QS21 - BladeCenter - 0792 Service Manual

Figure 13. DIMM slot location
Figure 14. DIMM retaining clips
10. If you do not want to install any other options, replace the cover and insert the

Replacing DIMM fillers

For the BladeCenter QS21 cooling system to work properly there must be no empty
DIMM slots. Unused slots must be fitted with DIMM fillers. Replace faulty DIMM
fillers and, if you remove memory modules, fit empty slots with DIMM fillers.
To install or replace DIMM fillers, complete the following steps:
1. Shut down the BladeCenter QS21.
Slot at JDIM11
Slot at JDIM10
Slot at JDIM01
Slot at JDIM00
There are four DIMM slots, two for each Cell/B.E. companion chip. If this is the
first pair of DIMMs you are installing, use slots 00 and 11. Slots 00 and 11 are
the two outer slots as shown in Figure 13. For a second pair of DIMMs, use
the remaining slots 01 and 10.
5. Remove the DIMM fillers from the slots where you want to insert the DIMMs.
Retain the DIMM fillers. You need them if you remove any DIMMs from the
blade server as they are an important part of the blade server cooling system.
6. Place the DIMM in the slot, contact side down. Check the orientation of the
module. The central locating pin in the slot should match the corresponding
cut-out on the module.
7. Carefully press the module into place until the retaining clips snap into
position. Make sure that the clips are locked properly.
8. Repeat steps 6 and 7 until you have installed all the optional DIMMs.
9. Ensure that all unused DIMM slots are fitted with DIMM fillers.
BladeCenter QS21 into the BladeCenter unit.
DIMM
Retaining clip
Chapter 4. Installing and removing replaceable units
37