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Cisco PIX Firewall Hardware Installation Guide
78-15170-01
Chapter 6 PIX 525
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.
Warning
Danger of explosion exists if the lithium battery is incorrectly replaced. Replace only with the same
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:
Warning
Before working on a system that has an On/Off switch, turn OFF the power and unplug the power cord.
Caution Always remove old memory before installing new memory.
Caution If you remove the PIX Firewall chassis top panel, always reinstall the top panel. Running the PIX Firewall
without the top panel may cause overheating and damage to electrical components.
Memory Installation Steps
Complete these steps to install additional system memory:
Step 1 If the unit is rack-mounted, remove network wires and any cords connecting to the PIX Firewall unit.
Ensure that the unit is unplugged from its power source.
Step 2 Unpack the items in the memory upgrade kit.
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