3Com 3C13840, 3C13880 6.6 Removing/Installing the Encryption Daughter Card

3Com Router 6000 Family
Installation Manual
Chapter 6
Maintaining Hardware
3Com Corporation
6-6
(1)
(1)
1) Locking spring clips
Figure 6-6 Remove and install the SDRAM
Step 2: Hold the SDRAM by its edges with your thumb and index finger and pull it out from the
slot. Put the SDRAM into an anti-static bag to avoid ESD damage.
III. Installing an SDRAM
Step 1: Take out a new SDRAM. Hold the SDRAM by its top edge and put it into the SDRAM
slot in correct orientation.
Step 2: Press the SDRAM down into the slot with appropriate pressure, and close the locking
spring clips at both sides of the slot until the pins at both ends of the clip snap into the notches
at both sides of the SDRAM.
IV. Installing the RPU
For RPU installation procedures, refer to the section “Removing/Installing the Main Control
Board”.
6.6 Removing/Installing the Encryption Daughter Card
The slot for the encryption daughter card is located on the RPU2. The following subsections
describe the removal/installation procedures assuming that the RPU2 has been removed and
placed on a tabletop.
6.6.1 Removing the Encryption Daughter Card
Take 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 are
still in the RPU2.
Step 3: If you do not want to install a new card, remove the four screws and the bolts from
the bottom of the RPU2.