Nortel Networks 400 4.0 User Manual

Chapter 24 Replacing data cards and processing hardware

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Position and correctly align the new DIMM (edge connectors first) into the connector.

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.

Install the media services card (see 

). 

Partially install the base function tray in the main unit. 

Install the WAN card (if applicable). See 

. 

Connect the DS30 connectors to the MSC.

Completely install the base function tray in the main unit (see 

). Ensure you do not pinch or damage any cables.

Install the base function tray bezel. See 

. 

Insert all connectors in the correct locations on the base function tray face.

10 Restore the BCM system to operation. Refer to 

 for details. 

This section describes how to remove and install the clock/calendar battery located on the main 
card. This section provides the following procedures:

•

•

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.