Panasonic UF-490 - Manual (Page 103)

Troubleshooting
103
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If the receiving party reports that the received documents were black, or contained black lines, try making a
copy on your unit to verify. If the copy is black or has black lines, the document Scanning Area is probably
dirty and must be cleaned.
Cleaning the Document Scanning Area
To clean the Scanning Area
1 (1) Open the ADF Door.
(2) Release the Scanning Guide Levers on
both sides.
2 Wipe the Scanning Area and Roller gently
with a soft cloth gauze saturated with ethyl
alcohol. Be sure to use a clean cloth, the
scanning area can be easily scratched.
(1)
(2)