Sun Microsystems Ultra 20 User Manual page 98

4.5.11.2 Removing a Heatsink and CPU
To remove a heatsink and CPU:
Note – Before removing a CPU from the motherboard, create a backup file to
preserve all important data.
1. Turn off the power button on the back panel and all of the peripherals connected
to the workstation.
2. Disconnect the power cord.
3. Remove the left-side access panel.
4. Gently lay the system on its right side on a stable, nonslip surface.
Caution – The heatsink can become extremely hot. Allow a few minutes for the
heatsink to cool before attempting this procedure.
5. Disconnect the CPU fan cable from its connector on the motherboard.
4-46 Sun Ultra 20 Workstation User Guide • August 2006