Lenovo 3000 C305 All-In-One - Manual (Page 44)

Hardware Maintenance Manual
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5. Place the new LCD panel to the chassis.
Attention
Use an anti-electrostatic cloth to clean the LCD panel before installing
it to the chassis. You may dip a little alcohol if the LCD panel is dirty.
6. Screw back the four screws on the LCD panel.
7. Install the computer cover. Refer to “Completing the installation” .
Replacing the speaker system
To replace the left and right speakers
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.
3. Remove the four screws that secure the left and right speakers to the
chassis.