Cisco Systems CISCO7201 manual Removing and Installing a Dimm

Chapter 4 Replacing Cisco 7201 Field-Replaceable Units

Removing and Installing a DIMM

Step 4 Use a tie wrap to secure the wires to the rack, so that the wires are not pulled from the terminal block plug by casual contact. Make sure the tie wrap allows for some slack in the ground wire.

Step 5 Insert the terminal block plug in the terminal block header on the DC power supply panel, as shown in Figure 4-12.

Step 6 Repeat Step 1 through Step 4 if you are replacing a second DC power supply.

Step 7 Remove the tape from the circuit-breaker switch handle, and move the circuit-breaker switch handle to the on position.

Step 8 On the front of the router, place the power switch in the on (O) position to turn on the router.

Note After powering off the router, wait a minimum of 30 seconds before powering it on again.

You are finished installing the DC power supply.

Removing and Installing a DIMM

To remove and replace a SDRAM DIMM, use the information in this section. SDRAM specifications are in Appendix A, “Specifications.”

Powering Off the Router and Removing the Cover

This section provides information for powering off the router and removing the cover.

Warning During these procedures, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. Statement 94

Warning This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028

Step 1 Attach an ESD-preventative wrist or ankle strap, connecting the equipment end of the strap to an unfinished chassis surface.

Step 2 Power off the router by turning the power switch to the standby () position.

Note After powering off the router, wait a minimum of 30 seconds before powering it on again.

Step 3 Remove any power and input/output cables from the Cisco 7201 router. For AC power supplies, unplug the AC power cord from the power outlet. For DC power supplies, to ensure that all power is off, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the off position, tape the switch handle of the circuit breaker in the off position, and remove the DC connector.

Step 4 Remove the ground cable.

	Cisco 7201 Installation and Configuration Guide
OL-11364-04		4-15