Microprocessor Board - IBM IntelliStation A Pro 6224 Hardware Maintenance Manual And Troubleshooting Manual

Microprocessor board

Note:
v Read "Installation guidelines" on page 25.
v Read Appendix B, "Safety information," on page 117.
v Read "Handling static-sensitive devices" on page 25.
Complete the following steps to remove the microprocessor board:
1. Turn off the computer and attached devices; then, disconnect all power cords
2. Turn the computer on its side so that it is lying flat, with the cover facing up.
3. Remove the cover and support bracket (see "Replacing the side cover" on page
4. Remove the air baffle.
5. Disconnect all cables from the microprocessor board.
6. Remove all DIMMs from the microprocessor board and set them in a safe,
7. Remove the fan sink and microprocessor from the microprocessor board (see
8. Fully loosen the six captive screws connecting the microprocessor board to the
Figure 37. Removing the microprocessor board
9. Disconnect the microprocessor board from the system board by grasping the
and external cables.
27 and "Replacing the support bracket" on page 29).
static-protective place.
"Microprocessor and fan sink" on page 72) and set them in a safe,
static-protective place.
Attention: Before attempting to remove the fan sink from the microprocessor,
be sure to read all the instructions at "Microprocessor and fan sink" on page 72.
system board. Four of these screws also secure the fan sink retention module.
Alignment
holes
Alignment
pins
System
board
pull points on microprocessor board (at the two corners of the board nearest
Option screws
(captive)
Microprocessor
board
Fan sink
retention module
Second-microprocessor
connectors
Chapter 5. Field replaceable units
75