Installation guide

Upgrading System Memory in Cisco 3600 Series Routers

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Testing ROM Installation

Warning

Read the installation instructions before you connect the system to its power source. To see

translations of the warnings that appear in this publication, refer to the

Regulatory Compliance and

Safety Information

document that accompanied this device.

Step 1 Replace all network connections.

Step 2 Do one of the following:

• AC-powered router: Plug the power cord into a 3-terminal, single-phase power source that

provides power within the acceptable range (100 to 240 VAC, 50 to 60 Hz).

• DC-powered router: Remove the tape from the circuit breaker switch handle and reinstate power

by moving the handle of the circuit breaker to the ON position.

Step 3 Turn ON the power switch. The power LED on the front panel of the router should go ON.

Step 4 Check the OK LED on the right side of the front panel to verify that it goes ON after a few seconds

delay when booting.

Step 5 If you have problems and you replaced the ROM, see the next section, “Testing ROM Installation.”

Otherwise, see the “Obtaining Technical Assistance” section on page 39.

Testing ROM Installation

If you installed a new ROM, the router should boot into the ROM monitor or Cisco IOS software. Follow

these steps if you suspect that the ROM is inserted incorrectly:

Step 1 Remove the cover or mainboard tray, as described in the “Opening the Router” section on page 14.

Step 2 Complete the sequence described in the “Replacing ROM” section on page 29.

Step 3 Replace the cover, as described in the “Closing the Router” section on page 33.

Step 4 Try booting the router again.

Step 5 If the problem persists, see the “Obtaining Technical Assistance” section on page 39.

Recovering Cisco Flash Memory and System Images

If you have increased system Cisco Flash memory or reduced DRAM or SDRAM in a Cisco 3600 series

router, you might need to reload the Cisco IOS image, use the following ROM monitor command:

• xmodem—If the computer attached to your console has a terminal emulator that has xmodem

capability.

For complete information about ROM monitor commands, refer to Software Configuration Guide for

Cisco 2600, Cisco 3600, and Cisco 3700 Series Routers, available online at

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/index.htm