3Com Router 6000 FamilyInstallation ManualChapter 6Maintaining Hardware3Com Corporation6-6(1)(1)1) Locking spring clipsFigure 6-6 Remove and install the SDRAMStep 2: Hold the SDRAM by its edges with your thumb and index finger and pull it out from theslot. Put the SDRAM into an anti-static bag to avoid ESD damage.III. Installing an SDRAMStep 1: Take out a new SDRAM. Hold the SDRAM by its top edge and put it into the SDRAMslot in correct orientation.Step 2: Press the SDRAM down into the slot with appropriate pressure, and close the lockingspring clips at both sides of the slot until the pins at both ends of the clip snap into the notchesat both sides of the SDRAM.IV. Installing the RPUFor RPU installation procedures, refer to the section “Removing/Installing the Main ControlBoard”.6.6 Removing/Installing the Encryption Daughter CardThe slot for the encryption daughter card is located on the RPU2. The following subsectionsdescribe the removal/installation procedures assuming that the RPU2 has been removed andplaced on a tabletop.6.6.1 Removing the Encryption Daughter CardTake these steps to remove the encryption daughter card:Step 1: Loosen the four fastening screws on the encryption daughter card.Step 2: Remove the card from the RPU2 carefully, because the connectors on the card arestill in the RPU2.Step 3: If you do not want to install a new card, remove the four screws and the bolts fromthe bottom of the RPU2.
