Cisco Systems 7401ASR Removing the Cover, Remove the four screws holding the cover to the chassis

Chapter 1 Overview and Parts Installation

Replacing the SDRAM DIMM

Warning When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the card. Some platforms have an ESD connector for attaching the wrist strap. Do not directly touch the system board with your hand or any metal tool, or you could shock yourself.

To replace or upgrade the SDRAM DIMM, follow these instructions:

Removing the Cover

The Cisco 7401ASR router cover fits tightly on the chassis. Follow these instructions to remove the cover:

Step 1 Power off the router by turning the power switch to the off position.

Note After powering off the router, wait at least 30 seconds before powering it on again.

Step 2 Remove any cables from the Cisco 7401ASR router, including the power cables. 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, and tape the switch handle of the circuit breaker in the off position.

Figure 1-8 Removing the Screws and Releasing the Cover

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2

1

D		CELLS	CARRIERALARM
EN
LE
AB
	RX	RX	RX	TX
				RX	ENHANCED ATM

	66448
Cover screws	2 Cover removal slot and flatblade screwdriver

	Step 3	Remove the Cisco 7401ASR router from the rack, if it is rack-mounted.
	Step 4	Remove the four screws holding the cover to the chassis.
		Note	If needed, use a Phillips recess flat-head screw, M3.5 x 6-mm long, type B thread, steel with
			black zinc coating, as a replacement.
	Step 5	Insert a flat-blade screwdriver in each of the side cover removal slots.
	Step 6	Push the screwdriver blade against the cover latches to release the cover, as shown in Figure 1-8. The
		cover moves forward about one-quarter inch.
	Cisco 7401ASR Installation and Configuration Guide
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