2 Cisco 3600 Series Memory Upgrade Configuration Note
• Upgrading Flash Memory, page 14
• Upgrading the ROM, page 18
• Replacing the Cover, page 21
• Replacing Connections to the Router, page 22
• Obtaining Service and Support, page 23
• Cisco Connection Online, page 23
Warning Only trained and qualified personnel should be allowed to install or replace this
equipment. (To see translated versions of this warning, refer to the Regulatory Compliance and
Safety Information document that accompanied the router.)
Warning Before working on a chassis or working near power supplies, unplug the power cord on
AC units; disconnect the power at the circuit breaker on DC units. (To see translated versions of this
warning, refer to the Regulatory Compliance and Safety Information document that accompanied the
router.)
Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the
power cord. (To see translated versions of this warning, refer to the Regulatory Compliance and
Safety Information document that accompanied the router.)
The following warning applies to routers with a DC power supply:
Warning Before performing any of the following procedures, ensure that power is removed from
the DC circuit. 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. (To see translated versions of this warning, refer to the
Regulatory Compliance and Safety Information document that accompanied the router.)
Caution To avoid damaging electrostatic discharge (ESD)-sensitive components, ensure that you
have discharged all static electricity from your body before opening the chassis. Before performing
procedures described in this document, review the next section, “Safety Recommendations.”
Note When a procedure refers to the left side or right side of the chassis, it means as viewed from
the front.