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3-7
Confidential
(1) ADF scanning: Document moves across stationary CIS unit
Placing a document
face up
in the ADF activates the document front sensor, switching to ADF
scanning.
The CIS drive mechanism (details below) operates for each scanning command executed. First,
the CIS motor moves the CIS unit to the white reference film for white level compensation.
Secondly, the ADF motor rotates the document pull-in roller to pull the document into the ADF.
Thirdly, the CIS motor again moves the CIS unit to the ADF scanning position.
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 ejects subsequent pages above 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
with the left and top
edges fitting on the left and top guidelines 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 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 lens array gathering the light
reflected from the scanned image, the CIS PCB converting the light input to pixel data output,
and the CIS glass.
The CIS unit used in the machine supports color scanning. In scanning color documents, the
CIS unit illuminates them by turning on the red (R), green (G), and blue (B) LEDs alternately.
In scanning monochrome documents, it turns on the green LEDs only.
Содержание MFC 5890CN - Color Inkjet - All-in-One
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Страница 16: ...Confidential CHAPTER 1 PARTS NAMES AND FUNCTIONS ...
Страница 20: ...1 3 Confidential 1 2 CONTROL PANEL 10 9 7 8 6 1 2 3 4 5 ...
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Страница 24: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Страница 48: ...2 22 Confidential ITU T Test Chart 1 ...
Страница 49: ...2 23 Confidential Brother Chart ...
Страница 50: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Страница 96: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 100: ...4 2 Confidential 1 Error messages appearing on the LCD ...
Страница 101: ...4 3 Confidential ...
Страница 102: ...4 4 Confidential Check that you have subscribed to the Caller ID service ...
Страница 103: ...4 5 Confidential ...
Страница 104: ...4 6 Confidential ...
Страница 150: ...Confidential CHAPTER 5 HANDLING DATA HELD IN THE MACHINE PRIOR TO REPAIR ...
Страница 154: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 245: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 252: ...7 5 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Страница 260: ...7 13 Confidential Head Positioning Test Pattern ...
Страница 264: ...7 17 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Страница 265: ...7 18 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Страница 267: ...7 20 Confidential Vertical Alignment Check Patterns 2 2 ...
Страница 271: ...7 24 Confidential Left and Right Margin Check Pattern ...
Страница 272: ...7 25 Confidential Bottom Margin Check Pattern ...
Страница 282: ...7 35 Confidential ADF Copy Chart A B C D ...
Страница 286: ...Confidential CHAPTER 8 CLEANING ...
Страница 290: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Страница 298: ...9 6 Confidential Scanning Compensation Data List ...
Страница 301: ...9 9 Confidential Test Pattern ...
Страница 306: ...9 14 Confidential Configuration List ...
Страница 322: ...9 30 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Страница 323: ...9 31 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Страница 328: ...9 36 Confidential Vertical Alignment Check Patterns 1 2 ...
Страница 329: ...9 37 Confidential Vertical Alignment Check Patterns 2 2 ...
Страница 333: ...9 41 Confidential Left and Right Margin Check Pattern ...
Страница 334: ...9 42 Confidential Bottom Margin Check Pattern ...
Страница 364: ...App 2 3 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Страница 445: ...App 6 4 Confidential B Power supply PCB 100 V series ...
Страница 446: ...App 6 5 Confidential B Power supply PCB 200 V series ...