Lenovo J100 Hardware Maintenance Manual page 101

Attention:
Be careful to not drop anything onto the microprocessor socket while it is
exposed. The socket pins must be kept as clean as possible.
12. To install the microprocessor on the new system board, position the
microprocessor so that the notches 1 are aligned with the corresponding
tabs in the socket.
13. Make sure that the microprocessor retainer is fully open.
14. Using the vacuum pen 1 to pick up the microprocessor, lower the
microprocessor straight down into the socket.
15. Lower the microprocessor retainer.
16. Lock the retainer with the small handle to secure the microprocessor in the
socket.
17. The new retention bracket has plastic one-way rings on the posts that insert
into the rear of the new system board. Install the new retention bracket by
aligning the posts on the module with the holes in the system board and
pushing the posts through the holes until the retention bracket is secure.
18. Install the heat sink and fan assembly on the new system board.
19. Install the new system board into the chassis and align the screw holes with
those in the chassis. Insert and tighten the screws that secure the system
board.
Chapter 8. Replacing FRUs (Types 8252, 8253, 8254, 8255, 8256, 8257, 8258, and 8259)
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