Before You Begin
Remove the Cisco 7600 Series Ethernet Services 20G (ES20) line card from the Cisco 7600 Series Router. See the “Installing and Removing a Cisco 7600 Series Ethernet Services 20G Line Card” section.
Step 1 Wear an ESD-preventative wrist strap and attach it to an unpainted part of the router surface.
Step 2 Locate the daughterboard on the line card. See Figure 6-1.
Figure 6-1 Locating the Daughterboard
Step 3 Remove the six small screws from the daughterboard. See Figure 6-2.
Figure 6-2 Removing Screws from the Daughterboard
Step 4 Lift the daughterboard to disconnect the interboard connector between the daughterboard and the motherboard. See Figure 6-3.
Figure 6-3 Removing the Daughterboard
Step 5 Locate the DIMM on the daughterboard. See Figure 6-4.
Figure 6-4 Locating the DIMM on the Daughterboard
Handle the DIMM only along the edges. Do not touch the memory modules, pins, or traces (metal fingers along the connector edge), to avoid damage.
Step 6 Pull the retaining clips holding the DIMM away with your thumb. See A in Figure 6-5.
Step 7 When both ends of the DIMM are released from the socket, grasp the ends of the DIMM with your thumb and forefinger, and pull it completely out of the socket. See Figure 6-6 and A in Figure 6-5. Then, in compliance with electronic waste laws, dispose the DIMM.
Figure 6-5 Removing and Installing a DIMM
Figure 6-6 Holding the DIMM
It is normal to feel some resistance when installing a DIMM. Do not use excessive force or touch the surface components, to avoid damage.
Step 8 Install the replacement DIMM by holding the component-side facing up, with the connector edge (the metal fingers) away from you. Keep the sides of the DIMM between your thumb and index finger. See Figure 6-6 and B in Figure 6-5.
Step 9 Tilt the DIMM at a 30 degree angle to the socket, and then insert the connector edge of the DIMM into the socket. Verify that the notches on the DIMM are properly aligned with the ones on the connector before fully inserting the DIMM.
Step 10 Press down on the DIMM until the retaining clips lock the DIMM in place. See section B in Figure 6-5.
Step 11 Check the two alignment notches, and ensure that the clips are visible. If necessary, remove and reseat the DIMM. See B in Figure 6-5.
Improper alignment can permanently damage the interboard connectors between the daughterboard and motherboard. It is normal to feel some resistance when connecting the interboard connectors. Do not use excessive force, to avoid damage.
Step 12 Press the daughterboard back on the motherboard to connect the interboard connectors between the daughterboard and the motherboard. See Figure 6-7.
Figure 6-7 Replacing the Daughterboard
Step 13 Insert and tighten the six screws that were removed in Remove the six small screws from the daughterboard. See Figure 6-2.. See Figure 6-8.
Figure 6-8 Installing the Screws on the Daughterboard