Tools And Equipment Needed; Upgrading System Memory In Cisco 3725 Routers - Cisco 3600 Series Upgrade Instructions

Tools and Equipment Needed

Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD can occur
when electronic printed circuit cards are improperly handled, and can result in complete or intermittent
failures. Always follow ESD-prevention procedures when removing and replacing cards. Ensure that the
router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring
that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely
channel unwanted ESD voltages to ground. To properly guard against ESD damage and shocks, you must
use the wrist strap and cord properly. If no wrist strap is available, ground yourself by touching the metal
part of the chassis.
For safety, periodically check the resistance value of the antistatic strap. It should be between 1 and 10
Caution
megohms (Mohms).
Caution Before opening the chassis, be sure that you have discharged all static electricity from your body and the
power is off.
Tools and Equipment Needed
You need the following tools and equipment to remove and install DIMMs or SODIMMs in a Cisco 3700
series router:
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Upgrading System Memory in Cisco 3725 Routers

The following warning applies to DC powered systems only.
Note
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Statement 1003
Upgrading System Memory in Cisco 3700 Series Routers
10
Number 2 Phillips screwdriver
Small flat-blade screwdriver
ESD-preventive wrist strap
Antistatic mat
OL-5423-02