NEC EXPRESS5800/120Rc-2 Service Manual page 89

Installing a Processor
Observe static precautions. Use an antistatic wrist strap.
Hold the processor only by its edges.
Installing a second processor that is of a different type than
the first processor will result in system damage. Do not
touch or bend the processor's exposed pins.
Note:
system, you must remove the terminator from the secondary
processor socket. Also, you must install a VRM into the VRM
socket on the system board.
Note:
replacing it, leave the terminator board intact in the empty
secondary processor connector. Remove the processor you
want to replace. A VRM should NOT be installed in systems
with only one processor.
1. Remove the system front bezel and top cover as described earlier in this
chapter.
2. Ensure the server is powered down and the ac cable is disconnected.
3. Ensure the LED located on the PCI I/O board is OFF.
4. Tag and disconnect any cables attached to option boards installed in the
system.
5. Grasp each side of the frame of the PCI I/O board and pull upwards to
disconnect and remove it from the system board. See figure 4-7.
6. Referring to Figure 4-8, grasp the Pentium Processor air duct, slide it to the
left and lift up on the left side to release the tabs that attach it to the system
board. Remove the air duct from the system board.
7. Raise the ZIF socket lever to the up position. See Figure 4-10.
8. If you are adding a second processor into your system, remove the
terminator from the secondary processor socket.
9. Position the processor over its ZIF socket so the processor pins align with
the socket holes. Note that one corner of the processor has three pins that
should be positioned over the corner of the socket that has the three
matching pin holes. See Figure 4-11, A.
! CAUTION
! CAUTION
If you are adding a second processor to your
If your system has one processor and you are
Disassembly and Reassembly 4-13