SDRAM DIMM Removal and Installation

DIMM Location and Orientation

The two SDRAM DIMM connectors are located on the motherboard and are identified as MEMORY 0 and MEMORY 1 on the Cisco 3825 router, and as MEM0 and MEM1 on the Cisco 3845 router. See Figure 51 and Figure 52 for DIMM locations.

DRAM DIMMs have a polarization notch on the mating edge to prevent incorrect insertion. Figure 53 shows the polarization notch on a DRAM DIMM.

Figure 53 DRAM DIMM Polarization Notch

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Polarization notch

Removing an SDRAM DIMM

To remove an SDRAM DIMM from the motherboard, follow these steps:

Step 1 Pull the latches away from the DIMM at both ends. This lifts the DIMM slightly. Lift the DIMM completely out of the connector. See Figure 54.

Figure 54 Removing a DRAM DIMM

2

1

1

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1

Release the latches

2

Remove the DIMM

Installing and Upgrading Internal Components in Cisco 3800 Series Routers

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Cisco Systems OL-5965-01 warranty Dimm Location and Orientation, Removing an Sdram Dimm
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OL-5965-01 specifications

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