What To Do - Sun Microsystems Sun Fire V490 Parts Installation And Removal Manual

Caution – If you are using an antistatic wrist strap to protect against electrostatic
discharge, connect it to a properly grounded surface, such as a nearby equipment
rack, or a nearby system that is connected to a power source.

What to Do

Caution – Disconnect the AC power cords from the back of the system before
performing this procedure. Attempting to remove the power distribution board
while the AC power cords are connected to a power source can result in serious
personal injury.
1. Disconnect the AC power cords from the back of the system.
2. Using a long-stem Phillips No. 2 screwdriver, loosen the two screws at the rear
corners of the power distribution board.
Insert the screwdriver through the rear hole in the chassis stiffener to get direct
contact with the screw on the CPU-side of the system.
Loosen (do not remove) rear corner screws
Chapter 6 Servicing Miscellaneous Components 151