Completely power off the Enterprise system.
See the power off instructions in Chapter 11, Powering Off and On .
Remove the front bezel, front door and rear screen panel.
See Chapter 12, Preparing for Service, for information on removing these assemblies.
Remove any assemblies above and below the Enterprise system.
Refer to the respective service manuals for further information.
Remove all the boards and power supplies.
See Chapters 3-6 for information on removing the boards and Chapter 7, Power Supplies, for information on removing power supplies.
Remove the SCSI adapter assembly, the key switch adapter assembly, and the 200/240V fan tray assembly.
Disconnect any remaining cables from the Enterprise system main cabinet.
Remove the two screws on each side of the system cabinet that attach the top rails to the system cabinet.
Loosen the four screws on each side of the system cabinet that attach the top rails to the main chassis.
Remove the top rails and set them aside.
Guide the four screws through the key slots in each top rail.
Remove the four screws on each side of the system cabinet that attach the bottom rails to the main chassis.
Use care when removing the Enterprise system chassis. It weighs approximately 100 pounds.
Carefully slide the Enterprise system chassis out toward the front and place it front side down onto a surface.
Remove the screws around the center of the main chassis.
For the Enterprise 6500 system, there are a total of 32 screws, 8 per side.
For the Enterprise 5500 system, there are a total of 26 screws.
Lift and remove the rear chassis and set it aside.
Remove the screws that hold the centerplane to the front chassis.
For the Enterprise 6500 system, there are a total of 27 screws, 20 screws around the side and 7 in the interior section.
For the Enterprise 5500 system, there are a total of 20 screws.
Remember the proper orientation of the centerplane when removing it from the front chassis.
Lift the centerplane out and set it aside.