Sony PCG-505F - Manual (Page 105)

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On Maintenance
❑
Make sure to disconnect the AC adapter before cleaning the
computer.
❑ Avoid rubbing the LCD screen as this can damage the screen. Use a
soft, dry cloth to wipe the LCD screen.
❑ Clean the computer with a soft cloth lightly moistened with a mild
detergent solution. Do not use any type of abrasive pad, scouring
powder or solvent, such as alcohol or benzine.