Cisco 3845 Hardware Guide - Page 126
PVDM Installation and Removal, PVDM Location and Orientation
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PVDM Installation and Removal Figure 63 CompactFlash Memory Card Installation on the AIM 120376 PVDM Installation and Removal Cisco 3800 series routers hold up to four Cisco packet voice data modules, version II (PVDM-II), to support enhanced versions of digital signal processors (DSPs). Caution When you remove or install PVDMs, always wear an ESD-preventive wrist strap, and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal part of the router. Caution Handle PVDMs by the edges only. PVDMs are ESD-sensitive components and can be damaged by mishandling. PVDM Location and Orientation The four PVDM connectors are located on the motherboard and are identified as PVDM0, PVDM1, PVDM2, and PVDM3. See Figure 51 and Figure 52 for PVDM locations. PVDMs have a polarization notch on the mating edge to prevent incorrect insertion. Figure 64 shows the polarization notch on a PVDM. Installing and Upgrading Internal Components in Cisco 3800 Series Routers 96 OL-5975-04
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