Replacing the ROM

Replacing the ROM

To upgrade the router ROM software to a new ROM monitor version, you must replace the existing ROM. Follow this procedure to replace the ROM:

Caution Correct placement of the ROM is crucial. If improperly positioned, the new component could be damaged when the router is powered on. Read all instructions before proceeding. To prevent damage to the ROM from ESD (when handling the router and its components), follow the ESD procedures described in your hardware guide and see the Regulatory Compliance and Safety Information document. Be careful not to damage or scratch the printed circuit card under the ROM.

Step 1 Locate the ROM on the system board (motherboard) layout as shown in Figure 3.

Step 2 Gently remove the old ROM with a ROM extraction tool or a small flat-blade screwdriver, and set it aside.

Figure 3 System Board Layout, Cisco 2620 and Cisco 2621 Only

Duart

reset Reset

 

 

 

 

 

 

 

Primary memory

 

 

 

 

 

 

 

 

 

 

 

Pin 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Boot

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(DRAM DIMMs)

 

 

 

 

 

System-code SIMM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ROM

 

 

 

 

(Flash memory)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Advanced Interface

Module

PCI connector

Lattice

U22 U23

 

 

 

 

Ethernet

AUX

 

 

 

 

EthernetConsole

56421

BootROM Installation for Cisco 2620 and Cisco 2621 Routers

4

78-13192-02

 

 

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Cisco Systems manual Replacing the ROM, System Board Layout, Cisco 2620 and Cisco 2621 Only