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230 Chapter 10 Replace Data Cards and Processing Hardware
P0993133 03
Replace the Processor Expansion Card (PEC)
The BCM200 is equipped with one Processor expansion card (PEC III) mounted on the Media
services card (MSC). The BCM400 is equipped with two Processor expansion cards (PEC III)
mounted on the Media services card (MSC). The PECs provide signal processing capabilities for
such applications as voice mail and IP telephony applications.
This section describes the processes to remove and replace a PEC module.
Figure 153 provides an overview of the process for replacing the PEC.
Figure 153 PEC replacement overview
Danger: Electrical shock warning.
Disconnect the power cord, telephone cables and network cables before opening the
computer.
Read and follow installation instructions carefully.
Caution: Use only a Nortel Networks approved replacement. Contact your account
representative for the current list of approved replacement parts.
Set up unit for
maintenance
Remove the top
cover
Restore unit to
operation
If required,
remove PEC
module from MSC
Install the
PEC
Test system
Do a software
shutdown
Ensure you
have a current
data backup.
Warning:
Incorrect handling
of the PEC during
installation could
result in loss of
telephony
programming.