4-204 Service Manual
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4. Disconnect the cable and ground (C) from the scanner interface card.
5. Lift the ADF unit assembly, and remove the two front thumb screws (D).
6. Slide the ADF unit assembly back, and lift to remove it.
Installation note: After replacing the ADF unit assembly, you must calibrate the scanner and check for skew.
See “Calibrating the scanner” on page 3-67, “Adjusting skew” on page 3-54 and “ADF magnification
adjustment” on page 3-66.