Replace an AC or DC Power Supply
46
• Maintaining the Hardware
Palo Alto Networks
Replace an AC or DC Power Supply
The PA-7050 firewall can use four AC or four DC power supplies that are inserted in the front of the
chassis. When using DC power supplies, the AC power inlets and switches on the back of the device are
not functional and must be covered with the provided cover plate.
All four power supplies on the front of the chassis should be connected during normal operation. If the
system detects a loss of power, either due to loss of power connection or failure of a power supply, the
power LED located on the power supply and the PWR LED on the SMC card will both turn red.
To replace a power supply, see the following topics:
•
“Replace an AC Power Supply” on page 46
•
“Replace a DC Power Supply” on page 48
Replace an AC Power Supply
Before servicing the hardware, read the information in “Cautions and Warnings” on page 43.
The PA-7050 can be configured with four serviceable hot-swappable AC power supplies located on the
front of the chassis and the power switch on the back of the chassis corresponds to each power supply.
To locate the failed power supply, view the system logs or check the LEDs located on each power
supply. A red LED indicates a failed power supply. You must have at least two power supplies
functional for the chassis to remain operational. During normal operation, all four power inputs should
be installed and powered.
To replace an AC power supply:
1.
Put the power supply switch for the failed power supply in the off position and unplug the power
cord. For example, if you are facing the front of the chassis and the far left power supply has failed,
the corresponding switch/cord is located on the back of the chassis opposite of the failed power
supply. Removing the power cord will prevent the risk of arcing inside the chassis.
2.
Loosen the power supply thumb screw located at the top left of the power supply.
WARNING: The chassis is designed to user either AC or DC power supplies, not a
combination of the two. Do not attempt to mix power supply types (AC/DC).
Note: The AC power module that contains the on/off switch and the power cord
inlet is not serviceable.
