Chapter 1 Preparing to Service the System 15
Before You Begin
Caution – Unless the rack is bolted to the floor, you must extend the cabinet’s anti-
tip legs and adjust their stabilizing feet to the floor. You must level and secure the
cabinet to provide a safe working environment. See “Tools Required for Installation
and Service” on page 14 for useful tools required for this procedure.
What to Do
1. Extend and adjust the cabinet’s anti-tip legs.
2. Open (or remove) the front and back rack enclosure doors.
3. Disconnect all external cables attached to the back panel of the system.
As you disconnect each cable, label it with a strip of masking tape indicating the
cable’s origin and its terminating connection.
Caution – Do not disconnect the power cable(s) from the system power inlet(s)
unless you are installing or replacing the power distribution board, the main logic
board, or the Remote System Control (RSC) card. The power cord grounds the
system.
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