Sun Microsystems Fire V890 Service Manual page 100

4. Replace the 15 M4 Phillips screws that secure the motherboard in the chassis.
a. Insert the top center screw and tighten it by two turns.
b. Insert the screw directly beneath the top center screw and tighten it by two
turns.
c. Insert the top left and right screws and tighten them by two turns.
d. Repeat this pattern for the remaining screws until they are all installed.
e. Fully tighten the screws in the pattern described until the board is fully seated.
72 Sun Fire V890 Server Service Manual • October 2005