Confidential
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(1) ADF scanning: Document moves across stationary CIS unit
Placing a document
face up
in the document support activates the document front sensor,
switching to ADF scanning.
The CIS drive mechanism (details below) operates for each scanning command executed.
The CIS unit first moves to the white-level reference film for white level compensation and
then to the ADF scanning position.
The ADF motor then rotates the document pull-in roller to pull the document into the ADF.
The document separation roller feeds the pages one at a time,
starting from the top,
to the
document feed roller, which rotates to move the page in a curve left, down, and right.
The page is scanned as it passes over the CIS unit. It then leaves the machine
face down
onto
the document cover. The machine inserts subsequent pages under this one to preserve the
document page order.
(2) Flat-bed scanning: CIS unit moves under stationary document
The user lifts the document cover, places a page (or open book)
face down
on the glass plate,
and closes the document cover.
The CIS drive mechanism (details below) operates for each scanning command executed.
The CIS unit first moves to the white-level reference film for white level compensation.
It then moves right, scanning as it goes. It returns to its home position after the scan.
CIS drive mechanism
The contact image sensor (CIS) unit rides along the CIS rail driven by the CIS drive belt.
Clockwise motion of the CIS motor moves the unit to the left; counterclockwise motion, to the
right. This unit consists of the document illumination LED array, the self-focus lens array
gathering the light reflected from the scanned image, the CIS PCB converting the light input to
pixel data output, and a glass cover.
The CIS unit is the type in which color reading is possible. While reading the color stationary
document, the LED array with red, green, blue ( RGB ) lights up the 3 colors alternately. While
reading the monochrome document, only the green color of the LCD array will be lighten up.
Содержание DCP-7010
Страница 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS MFC7420 7820N DCP7010 7020 7025 ...
Страница 14: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Страница 20: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Страница 44: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Страница 64: ......
Страница 65: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Страница 68: ...Confidential 4 2 Cover page sample End page sample ...
Страница 69: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 150: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 154: ...Confidential CHAPTER 7 CLEANING ...
Страница 156: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Страница 164: ...8 7 Confidential Scanning Compensation Data List a b c d e f g h i j k l m n q ...
Страница 172: ...8 15 Confidential Configuration List ...
Страница 178: ...8 21 Confidential Cover page sample End page sample ...
Страница 187: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 321: ...A NCU PCB MFC7420 U S A and CANADA models Confidential ...
Страница 322: ...A NCU PCB MFC7820N U S A and CANADA models Confidential ...
Страница 323: ...A NCU PCB MFC7420 EUROPE models Confidential ...
Страница 324: ...A NCU PCB MFC7820N EUROPE models Confidential ...
Страница 325: ...B Power Supply PCB 100V U S A and CANADA models Confidential ...
Страница 326: ...B Power Supply PCB 200V EUROPE models Confidential ...
Страница 327: ...December 04 SM FAX036 2 8C5A03 Printed in Japan ...