IBM IntelliStation E Pro Hardware Maintenance Manual page 104

5. Remove the 12 screws that secure the system board to the chassis and put
6. Remove the heat-sink retention module and set it aside.
7. Gently slide the system board slightly toward the front of the computer until it
8. Remove the heat-sink retention clip.
To install the system board, reverse the previous steps.
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IBM IntelliStation E Pro Types 6216 and 6226: Hardware Maintenance Manual
them from the computer.
System board
screws ( 8 places )
Heatsink retention
module screws
( 4 places )
Heatsink
retention
clip
Retainer tabs
( 4 places )
them in a safe place.
Note: Four of the screws described in step 5 secure the heat-sink retention
module to the heat-sink retention clip, with the system board in between
them. It is easier to remove these screws while the system board is
positioned in the chassis.
disengages from the chassis; then, lift the board up and out of the computer.