IBM IntelliStation A Pro 6224 Hardware Maintenance Manual And Troubleshooting Manual page 59

5. Touch the static-protective package containing the microprocessor board to
any unpainted metal surface on the computer. Then, remove the
microprocessor board from the package.
Alignment
holes
Press points
Alignment
pins
System
board
Figure 18. Installing the microprocessor board
6. Remove the six indicated screws from the system board.
7. Position the alignment holes in the microprocessor board over the guide pins
on the system board; then, lower the microprocessor board onto the guide
pins.
8. Make sure that the connectors on the underside of the microprocessor board
line up with the second-microprocessor connectors on the system board.
9. Tighten the four screws on the fan-sink socket; then, tighten the two screws on
the corners of the microprocessor board to secure the microprocessor board to
the system board.
10. Press down on the barcode label and the indicated corner to make sure that
the microprocessor board is firmly seated in the connectors on the system
board.
11. Remove the protective cover, tape, or label from the surface of the
microprocessor socket, if any is present.
Option screws
(captive)
Microrpocessor
board
Short
screws
Second-microprocessor
connectors
Chapter 4. Customer replaceable units
49