October 2000 © TOSHIBA TEC
3 - 1
MR-2012 OPERATIONAL DESCRIPTION
3. OPERATIONAL DESCRIPTION
3.1 General Operation
The ADF is an auto document feed unit capable of accommodating a maximum of 50 originals. The
originals loaded are fed and scanned one by one and stacked on the exit tray. The ADF has a mechanical
section for document transport, sensors to detect the position of document, etc., and a motor for transport.
It also has one PWA where comparator IC’s only are installed and the other signals simply pass. For this
reason, all control and processing are performed by the scanner PWA.
3.2 Block Diagram
ADF 03-02-01
ADF
PWA
ADF
CN6
CN1
Scanner
PWA
ADF read sensor
ADF open cover sensor
Document length sensor
Document width sensor
ADF top cover open switch
CN4
CN5
ADF registration sensor
Document empty sensor
ADF exit sensor
ADF motor
M
CN2
CN3