Document Scanning - Dell 2135cn Service Manual

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9. Document Scanning

The document scanning section of this machine consists of an Image Input Terminal (ITT), a scanner

that reads a single-sheet document placed on the platen glass; and an Auto Document Feeder (ADF)

that conveys the pages of a multiple-sheet document.

The optical image reflected from the document reaches the CCD image sensor via the light path shown

in the figure below.

Version 1 2008.02.01

CVT Position

(Home Position)

Home Position Sensor

Chapter 6 Principle of Operation (Scanner)

Platen Registration Point

Scanner Assy

CCD Image Sensor

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