Before You Begin; What To Do - Sun Microsystems Sun Fire V490 Parts Installation And Removal Manual

Before You Begin

Caution – Unless the cabinet 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.
For a list of useful tools required for this procedure,
"Tools Required for Installation and Service" on page 18
I

What to Do

1. Be sure the cabinet is stabilized so that the cabinet cannot move or tip forward.
If there are feet beneath the cabinet to prevent it from rolling, be sure the feet are
fully extended downward to the floor.
Stabilize the cabinet using the stabilizing mechanisms provided with the cabinet.
Refer to the instructions provided with the cabinet.
2. Open (or remove) the front and back cabinet doors.
3. If a cable management arm is not installed, disconnect all external cables attached
to the back panel of the system.
Caution – Do not disconnect the power cords from the system power inlets unless
you are installing or replacing the system control switch, the power distribution
board, the centerplane, the PCI riser board, or the system controller (SC) card. The
power cords ground the system and provide electrostatic discharge (ESD) protection
to internal components.
4. Remove the four screws that secure the system to the left and right vertical rails at
the front of the rack.
Use a Phillips No. 2 screwdriver to remove the screws, which are in recessed access
holes in the decorative panels affixed to the system's front panel.
26 Sun Fire V490 Server Parts Installation and Removal Guide • October 2005