Oracle Acme Packet 4500, Hardware Installation And Maintenance Manual

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76 Acme Packet 4500 Hardware Installation and Maintenance Guide
MAINTENANCE
Power Supply Removal and Replacement
This section explains how to remove and replace the power supplies in the Acme
Packet 4500 chassis.
Caution When removing or replacing a single power supply in a running
chassis, ensure that its power switch is turned off first. Failure
to turn off the power supply switch before insertion or removal
may damage the system.
After physically switching off a power supply, disconnect it
from the power source before you remove or install it in the
chassis.
Caution Both power supplies must be the same type AC or DC. The
power supplies must be populated with two identical power
supplies made by the same vendor. The vendor is identified by
the label on top of the power supply.
The power supply is a user-replaceable component. If a Acme Packet 4500 power
supply malfunctions, you should remove the malfunctioning power supply and
replace it. The power supply can be removed from the chassis while still installed in
the rack and while the second power supply is providing system power; this is called
a
warm swap . When removing and replacing a power supply, remember to first
ground yourself using appropriate ESD grounding equipment such as a wrist or heel
strap.
Note: See Power Components for an explanation about power supply
numbering.
For information regarding how to obtain a replacement power supply, contact your
Acme Packet customer support representative directly or E-mail
tac@acmepacket.com.
AC or DC Power
Supply Removal You can remove AC and DC power supplies with the same procedure once they are
disconnected from their power source. The images used in the procedure below use
an AC power supply.
Note: You can have the system up and running during this procedure
if you are changing out a defective power supply.
1. The system is up and running.
2. Locate the defective power supply.
3. Turn the power switch to the OFF position on the defective power supply only.
4. Follow the procedure below.