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9-16
Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 9 Removing and Installing the NPE or NSE
Removing and Replacing the NPE or NSE
Figure 9-11 Handling the DIMM
Caution To prevent ESD damage, handle the DIMM by the card edges only. Place a removed DIMM on an
antistatic mat and store it in an antistatic container.
Step 6 Place the DIMM in an antistatic container to protect it from ESD damage.
This completes the DIMM removal procedure. Go to the “Installing SDRAM DIMMs” section on
page 9-16.
Installing SDRAM DIMMs
Caution The DIMM is a sensitive component that is susceptible to ESD damage. Handle the DIMM by the edges
only; avoid touching the memory modules, pins, or traces (the metal fingers along the connector edge of
the DIMM). To prevent ESD damage, handle the DIMM as shown in Figure 9-11.
Note The NPE-300 contains two banks of SDRAM. Both SDRAM banks are used for all packet memory
requirements; however, bank 0 is used exclusively for packet memory and is set at a fixed configuration
in the factory.
Bank 1 contains two user-configurable SDRAM slots, DIMM slot 2 and DIMM slot 3. (See Chapter 3,
“NPE-300 and NPE-400 Overview,” the “Components” section on page 3-2.) Both slots in bank 1 can
be populated by DIMMs of different sizes; however, the size of the DIMM in slot 2 must be greater than
or equal to the size of the DIMM in slot 3, and the size of the DIMM in slot 3 can be zero.
1 SDRAM DIMM
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