Sun Microsystems Sun Fire V490 Parts Installation And Removal Manual page 176

Note – Do not remove the two rear corner screws.
3. Using a long-stem Phillips No. 2 screwdriver, remove the four remaining screws
securing the power distribution board to the chassis.
Insert the screwdriver through the hole in the chassis stiffener to get direct contact
with the screw on the CPU-side of the system.
4. Remove the power distribution board from the system.
a. Slide the power distribution board toward the front of the system.
b. Tilt the power distribution board and remove it from the system through the
PCI riser board access bay.
Caution – Be careful not to damage the light pipes mounted to the rear of the
power distribution board.
5. Place the power distribution board on an antistatic mat.
152 Sun Fire V490 Server Parts Installation and Removal Guide • October 2005