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Cisco WS-X4424 Hardware Maintenance Manual - Page 103

Removing Main Memory SIMMS, damaged by mishandling.

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Memory Replacement Procedures Removing Main Memory SIMMS Follow these steps to remove main memory SIMMs: Step 1 Put on an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the connectors. Step 2 On the motherboard, locate the main memory SIMM card sockets shown in the upper right corner of Figure 5-5 (for the Cisco 4000-M) and Figure 5-6 (for the Cisco 4500-M and Cisco 4700). Caution Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be damaged by mishandling. Step 3 Remove one SIMM at a time, beginning with the SIMM farthest from the edge of the motherboard. (The Cisco 4000-M has only one main memory SIMM.) Step 4 To lift the SIMM out of its socket, pull the locking spring clips on both sides outward and tilt the SIMM free of the clips. (See Figure 5-8.) Maintaining and Upgrading the Router 5-9

Section	Page
Cisco 4000 Series Hardware Installation and Maintenance	1
About This Manual	15
Document Objectives	15
Audience	15
Document Organization	15
Document Conventions	16
Cisco 4000 Series Overview	19
External Differences in Models of the Cisco 4000 Series	19
Series Specifications	20
Memory Systems	22
Preparing for Installation	23
Safety Recommendations	24
General Site Requirements	25
Installation Checklist	27
Site Log	28
Required Tools and Equipment	28
Preparing to Make Connections	29
Console Port and Auxiliary Port Connection Considerations	31
Network Connection Considerations	32
Inspecting the System	58
Installing the Router	59
Rack-Mount and Wall-Mount Procedures Overview	59
Making Console Port Connections	59
Making Network Connections	60
Connecting Routers with a DC-Input Power Supply	77
Making Final Connections to the Router	80
Troubleshooting the InitialHardwareConfiguration	81
Problem Solving	81
Environmental Reporting Features	83
Reading Front-Panel LED Indicators	83
Reading Network Processor Module LED Indicators	84
Maintaining and Upgrading the Router	95
Accessing the Router Internal Components	95
Removing Network Processor Modules	98
Memory Replacement Procedures	100
Replacing Network Processor Modules	114
Replacing the Component Tray	114
Testing Your Installation	114
Cisco 4000 Series Virtual Configuration Register	117
Virtual Configuration Register Settings	117
Cisco4000-M ROM Monitor	123
Entering the Cisco 4000-M ROM Monitor Program	123
Cisco 4500-M and Cisco 4700 ROMMonitor	127
Entering the ROM Monitor Program	127
Operating Conditions for the United Kingdom	133
For United Kingdom Use Only	133
Operating Conditions for the EuropeanCommunity	135

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Maintaining and Upgrading the Router

5-9

Memory Replacement Procedures

Removing Main Memory SIMMS

Follow these steps to remove main memory SIMMs:

Step 1

Put on an ESD-preventive wrist strap and ensure that it makes good contact with your skin.

Connect the equipment end of the wrist strap to the metal back plate of the chassis, avoiding

contact with the connectors.

Step 2

On the motherboard, locate the main memory SIMM card sockets shown in the upper right

corner of Figure 5-5 (for the Cisco 4000-M) and Figure 5-6 (for the Cisco 4500-M and

Cisco 4700).

Caution

Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be

damaged by mishandling.

Step 3

Remove one SIMM at a time, beginning with the SIMM farthest from the edge of the

motherboard. (The Cisco 4000-M has only one main memory SIMM.)

Step 4

To lift the SIMM out of its socket, pull the locking spring clips on both sides outward and

tilt the SIMM free of the clips. (See Figure 5-8.)