Cisco Systems NPE-175, NPE-225 manual Installing Dram SIMMs, Cisco 7200 Series Main Memory Simm

Chapter 9 Removing and Installing the NPE or NSE

Removing and Replacing the NPE or NSE

Installing DRAM SIMMs

The DRAM SIMMs on the network processing engine are located in the following sockets:

•U18, U25, U4, and U12 on the NPE-100 and the NPE-150 (See Chapter 1, “NPE-100,NPE-150, and NPE-200 Overview,” Figure 1-1and Figure 1-2.)

•U11, U25, U42, and U52 on the NPE-200 (See Chapter 1, “NPE-100,NPE-150, and NPE-200 Overview,” Figure 1-3.)

Caution Handle SIMMs by the edges only; avoid touching the memory modules, pins, or traces (the metal fingers along the connector edge of the SIMM). (See Figure 9-8.)

To install memory SIMMs in the network processing engine, complete the following steps:

Step 1 With the network processing engine in the same orientation as the previous procedure (with the handle away from you and the edge connector toward you), install the first SIMM in the socket farthest from you. Then install the last SIMM in the socket closest to you.

Step 2 Remove a new SIMM from the antistatic bag.

Note To prevent DRAM errors in the NPE-100, NPE-150, or NPE-200, and to ensure that your system initializes correctly at startup, DRAM bank 0 (sockets U18 and U25, or U11 and U25) must contain no fewer than two SIMMs of the same type. You can also install two SIMMs of the same type in bank 1 (sockets U4 and U12, or U42 and U52); however, bank 0 must always contain the two largest SIMMs.

Figure 9-8 Cisco 7200 Series Main Memory SIMM

1

66607

1

2

3	2
Alignment holes		3	Connector edge with notch
Polarization notch

Step 3 Orient the SIMM so its connector edge (the metal fingers) is down and the component side is facing you. (See Figure 9-8.)

Step 4 Hold the sides of the SIMM between your thumb and middle finger, with your forefinger against the far edge, opposite the connector edge.

Step 5 Tilt the SIMM to approximately the same angle as the socket and insert the entire connector edge into the socket.

Network Processing Engine and Network Services Engine Installation and Configuration

OL-4448-12 9-13