HP 640 Fax series User Manual page 56

User guide
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Clean the document scanner area
4. Clean the document feeder rubber piece at the back of the control panel.
5. Carefully wipe the scanning glass with a soft, dry, lint free cloth.
• If the glass is very dirty, first wipe it with a slightly dampened cloth, then with a dry
one.
• Be careful not to scratch the glass surface.
6. Replace the roller in reverse order, and then close the control panel firmly until it clicks
into place.
50 Care and maintenance

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Cb782a - fax 640 b/w inkjet

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