NEC Express 5800/120Lg, Service Manual

Page: 85 / 204

Disassembly and Reassembly 4-19
CPU Removal
1. Observe the safety and ESD precautions listed under General Information
and Static Precautions at the beginning of this chapter.
2.
Prepare your system for upgrade. See Preparing Your System for
Disassembly and Reassembly described earlier in this chapter.
3.
Remove the left-hand side access panel as described earlier in this chapter.
!
CAUTION
Observe static precautions. Use an antistatic wrist strap.
Hold the processor only by its edges.
4.
Locate the appropriate processor on the CPU board. See Figure 4-6.
5.
Remove the heat sink from the top of the processor by inserting a small
screwdriver into the slots on its heat sink clips. Release the clip pressure
points in the order (1-6) shown in Figure 4-13.
1
2
3
4
5
6
Figure 4-13. Removing the Processor Fan Heatsink
6.
Swing its processor socket lever up until it is in the unlocked position and
carefully remove the processor. See Figure 4-14.
Figure 4-14. Removing the Processor
7. If you are adding or replacing a processor, refer to Installing a Processor
earlier in this chapter.