Epson LQ-510 User Manual page 169

3. If the outer case or paper guide is dirty or dusty, clean it with a
soft, clean cloth dampened with a mild detergent solution. Keep
the printer cover in place to prevent water from getting inside
the printer.
WARNINGS:
Never use alcohols or thinners to clean the printer,
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since these chemicals can damage the components as
well as the case.
Be careful not to get water on the printer mechanism
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or electronic components.
Do not use a hard or abrasive brush.
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Do not spray the inside of the printer with lubricants;
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unsuitable oils can damage the mechanism. Contact
your Epson dealer if you think lubrication is needed.
Maintenance 6-3