Lenovo 3000 C305 All-In-One - Manual (Page 52)

Hardware Maintenance Manual
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panel“ section.
3. Remove the optical drive. Refer to the steps 3 to 5 of the ”Replacing
the optical drive“ section.
4. Disconnect the inverter board cable from the inverter board 1 and
remove the two screws that secure the inverter board to the chassis 2.
5. Pull the inverter board away from the chassis.