Lenovo 3000 C305 All-In-One - Manual (Page 45)

Chapter 7. Replacing hardware
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4. Disconnect the speakers cable from the system board 1, and pull out
the left and right speakers from the chassis 2.
5. Align then insert the new speakers to the chassis.
6. Install the LCD panel. Refer to steps 5 to 6 of the “Replacing the LCD
panel” section.
7. Install the computer cover. Refer to ”Completing the installation“ .
Replacing the hard disk drive
To replace the hard disk drive
1. Remove the computer cover. Refer to ”Removing the computer cover“ .
2. Remove the LCD panel. Refer to steps 2 to 4 of the ”Replacing the LCD
panel“ section.