AR-M351U, AR-M451U (serv.man14). Maintenance details of following sections, 5-Laser Scanner, 6-Scanner, 7-DSPF, 8-Operation Panel - Sharp Copying Equipment Service Manual (repair manual). Page 4

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AR-M351U/M451U, AR-M355U/M455U  MAINTENANCE AND DETAILS OF EACH SECTION  7 - 46
6. Scanner section
A. General
There are following three methods of scanning documents in this
machine.
a. Place a document on the table glass. The copy lamp unit is
operated to radiate copy lamp light onto the document, scan-
ning the document with the CCD.
b. The SPF feeds a document. The copy lamp light is radiated
onto the document which is stopped at the specified position
and the document is scanned by the CCD.
c. The SPF feed a document. The LED light of the CIS unit which
is attached to the SPF is radiated to the back of the document,
and the document is scanned by the CIS.
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