Fax; Fax Overview - Xerox Phaser 6000 Service Manual

Fax

Phaser 6000/6010 and WC 6015 MFP

Fax Overview

A Fax (abbreviation of facsimile) is a device that sends and receives image data
using either an analog or a digital telephone line. The following describes the
analog line system.
The three basic units of a Fax are the Scanner (for reading the image), the Control
Circuit, and the Printer.
DA
Conversion
(Modulation)
AD
conversion
(demodulation)
Xerox Internal Use Only
Scanner
Original
Scanning
CMOS Image
LED
Sensor
Digital signal
Control Circuit
Modem
A/D Conversion Unit
NCU
Analog signal
Control Circuit
Modem
NCU
A/D Conversion Unit
Digital signal
Printer
Print
Printing
Theory of Operation
Black becomes 0,
white 1 creating...
Original
1 1 1 1 1 1
1 0 0 0 0 1
1 0 1 1 1 1
Image Digital data
Sending FAX
Telephone line
Receiving FAX
s6015-033
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