Nortel Networks BCM200/400 - Manual (Page 326)

326 Chapter 24 Replacing data cards and processing hardware
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To install a DIMM card
1 Position and correctly align the new DIMM (edge connectors first) into the connector.
2 Carefully and firmly press down on the top of the DIMM card with your thumbs. At the same
time, use your index fingers to move the fastening tabs inward toward the card. When the card
is completely inserted in the connector, the fastening tabs clip to the side of the DIMM card.
3 Install the media services card (see “To install the media services card (MSC)” on page 314 ).
4 Partially install the base function tray in the main unit.
5 Install the WAN card (if applicable). See “Installing the WAN card” on page 310 .
6 Connect the DS30 connectors to the MSC.
7 Completely install the base function tray in the main unit (see “To install the base function
tray” on page 244 ). Ensure you do not pinch or damage any cables.
8 Install the base function tray bezel. See “To install the base function tray bezel” on page 246 .
9 Insert all connectors in the correct locations on the base function tray face.
10 Restore the BCM system to operation. Refer to “Restarting the system after maintenance” on
page 240 for details.
Replacing the clock/calendar battery
This section describes how to remove and install the clock/calendar battery located on the main
card. This section provides the following procedures:
• “To remove the clock/calendar battery” on page 327
• “To install a new clock/calendar battery” on page 329
Note: There must be at least one DIMM installed in the BCM main unit for the system to
function.
Warning: Protect the hardware components against damage from electrostatic discharge.
Always wear a grounded wrist strap before you handle components. Always place the
components in a static-free container.
Note: The DIMM has two notches on the edge connector. Position the DIMM so
that one of the notches is on the side of the slot nearest to the BCM cards.
Note: Do not force the DIMM into its slot. If the DIMM does not slide in easily,
check the alignment of the DIMM.