Nortel Networks BCM200/400 - Manual (Page 322)

322 Chapter 24 Replacing data cards and processing hardware
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Figure 171 Remove the processor expansion card (PEC III)
Installing a processor expansion card (PEC)
When you replace or add PECs, ensure you follow the directions for shutting down the system.
Ensure you have a current data backup of your system. This procedure assumes the base function
tray is completely removed from the main unit.
Warning: Possible data loss
Ensure that you do not touch the PEC casing to any of the components on the MSC. This
may cause shorting, which can erase memory or cause a loss of telephony programming.
If this occurs, complete the installation of the PEC, and then restore the data from your
backup medium.
Warning: Protect the hardware components against damage from electrostatic discharge.
Always wear a grounded wrist strap before you handle components. Always place the
components in a static-free container.
Processor expansion card