5-21
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-03
Chapter 5 Installing and Upgrading Internal Modules and FRUs
Installing and Removing PVDM3
PVDMs must be used in an homogeneous fashion. In other words, do not mix PVDM2s with PVDM3s
in the same router.
PVDM slot numbering is defined in the
“Locating Internal Modules” section on page 5-7
. When using
only one PVDM, ensure the module is installed in slot0.
PVDM2s must be installed in a PVDM II adapter for use in the PVDM3 slot on Cisco 2900 series and
Cisco 3900 series ISRs. See the
“Installing and Removing PVDM2s” section on page 5-23
.
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
chassis.
Caution
Handle PVDMs by the edges only. PVDMs are ESD-sensitive components and can be damaged by
mishandling.
PVDM3 Location and Orientation
The PVDM3 connectors are located on the motherboard and are identified as PVDM3 0 through 3. See
the
“Locating Internal Modules” section on page 5-7
for locations.
PVDM3s have a polarization notch on the mating edge to prevent incorrect insertion.
Caution
PVDM3s and DIMMs plug into similarly sized connectors. Only the polarization notch differs. Be sure
that you are inserting the PVDM3 into the PVDM3 connector. See
Figure 5-10
for an example of the
DIMM polarization notch.
Removing a PVDM3
To remove a PVDM3 from the motherboard, follow these steps:
Step 1
Read the
“Safety Warnings” section on page 5-2
section and disconnect the power supply before you
perform any module replacement.
Step 2
Locate the PVDM3 on the motherboard. See the
“Locating Internal Modules” section on page 5-7
.
Step 3
Pull the PVDM3 retaining clips away from the PVDM3 at both ends, and then lift the PVDM3 straight
up from the connector. See
Figure 5-16
.
Cisco 3925E
Services Performance Engine 200
3
Cisco 3945E
Services Performance Engine 250
3
Table 5-1
PVDM3 Support (continued)
Router
Motherboard
Number of Supported PVDM3