Lenovo IdeaCentre B500/B505 Hardware Maintenance Manual

Hardware Maintenance Manual
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9. Pull the system board out of the chassis.
10. Place the new motherboard into the chassis, aligning the screw holes
in the motherboard with the mounting holes in the chassis.
11. Screw the 8 screws on the new motherboard back in.
12. Install all related components back to the new motherboard.
13. Install the computer cover.