Fuji Xerox DocuPrint M355df Service Manual page 533

Chapter 10 Principle of Operation
10.5 Unit Mechanisms
FAX System (Detail)
Scanner
Scanning
LED
Control circuit
DA
conversion
(modulation)
Control circuit
AD
conversion
(demodulation)
Printer
Printing
NOTE
After the telephone number is entered, the NCU automatically performs steps 1 and 2 of the line connection
procedure described in"10.2 Telephone Call Connection Mechanism"
If on the receiving end, step 6 is automatically performed to answer.
Original
CCD Image
Sensor
Digital signal
Modem
A/D conversion
unit
NCU
Analog signal
Modem
NCU
A/D conversion
unit
Digital signal
Print
10-12
Original
Image
Sending FAX
Telephone line
Receiving FAX
Black becomes 0,
white 1 creating ...
1 1 1 1 1 1
1 0 0 0 0 1
1 0 1 1 1 1
Digital data
KjA10008XA