Cisco Systems Network Device 2800 Installationshandbuch PDF herunterladen (Seite 157)

Installing and Upgrading Internal Modules in Cisco 2800 Series Routers

OL-5792-04

Installing and Removing PVDMs

PVDM Location and Orientation

The PVDM connectors are located on the system board, and are identified as follows:

• In Cisco 2801 and Cisco 2811 routers—PVDM 0 and PVDM 1

• In Cisco 2821 and Cisco 2851 routers—PVDM 0, PVDM 1, and PVDM 2

Refer to Figure 8, Figure 9, Figure 10, and Figure 11 for PVDM locations.

PVDMs have a polarization notch on the mating edge to prevent incorrect insertion. Figure 28 shows the

polarization notch on a PVDM.

Figure 28 PVDM Showing Polarization Notch

Removing a PVDM

To remove a PVDM from the system board, follow these steps:

Step 1 Locate the PVDM on the system board. See Figure 8, Figure 9, Figure 10, or Figure 11, depending on

your router model, for the location of the PVDMs.

Step 2 Pull the PVDM retaining clips away from the PVDM at both ends, and then tilt the PVDM until it can

be freely removed from the connector. See Figure 29.

Note PVDMs must be removed in order—PVDM 1 then PVDM 0 in Cisco 2801 and 2811 routers, and

PVDM 2, then PVDM 1, then PVDM 0 in Cisco 2821 and 2851 routers.

Polarization notch

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Alignment holes

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Cisco Systems Network Device 2800 Installationshandbuch Seite 157