System board removal
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IBM IntelliStation Type 6866: Hardware Maintenance Manual
Remove the side cover.
Remove the memory board.
Remove the hard disk fan assembly.
Remove adapter cards.
Remove the card guide/fan assembly.
Disconnect all cables attached to the system board.
Release the system board back-plate release latch c 1 d
Slide the system board and back plate toward the front of the system c 2 d and lift
the system board and back-plate c 3 d out of the chassis.