Lenovo E40–30 User Manual page 50

Note: Avoid spraying cleaner directly onto the display.
4. Wring out as much of the liquid as you can.
5. Wipe the display again; do not let any liquid drip into the computer.
6. Be sure to dry the display before closing it.
Keep the following in mind:
• Only an authorized Lenovo repair technician should disassemble and repair your computer.
• Do not modify or tape the latches to keep the display open or closed.
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User Guide