Replacing A Lithium Battery; Installing A Memory Upgrade - Cisco PIX 501 Hardware Installation Manual

Replacing a Lithium Battery

Replacing a Lithium Battery
The PIX Firewall has a lithium battery on its main circuit board. This battery has an operating life of
about 10 years. When the battery loses its charge, the PIX Firewall cannot function. The lithium battery
is not a field replacable unit (FRU). Contact Cisco TAC to replace the battery.
Note Do not attempt to replace this battery yourself.
Danger of explosion exists if the lithium battery is incorrectly replaced. Replace only with the same
Warning
or equivalent type recommended by the manufacturer. Dispose of used batteries according to the
manufacturer's instructions.

Installing a Memory Upgrade

Observe the following warnings, cautions, and notes when installing additional PIX Firewall system
memory.
The following statement applies to DC models:
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.
The following statement applies to both AC and DC models:
Before working on a system that has an On/Off switch, turn OFF the power and unplug the power cord.
Warning
Caution Always remove old memory before installing new memory.
Note After installing additional memory in the PIX 520, do not remove the memory strips and power on the
unit, or the PIX Firewall unit will become inoperable.
If you remove the PIX Firewall chassis top panel, always reinstall the top panel. Running the PIX Firewall
Caution
without the top panel may cause overheating and damage to electrical components.
Cisco PIX Firewall Hardware Installation Guide
5-12
Chapter 5 PIX 520
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