Service manual

Chapter 4
4-7
F-4-11
F-4-12
4.3 Various Control
4.3.1 Controlling the Scanner Drive System
4.3.1.1 Outline
0010-4249
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The machine's scanner system consists of the following components:
F-4-13
[1] Reader motor (M401) drive signal
Controls rotation/stop and rotational direction/speed of the reader motor.
[2] Contact image sensor (CIS) HP sensor (SR401) signal
Detects that the contact image sensor (CIS) is at the home position.
[3] Copyboard cover sensor (SR403 (front)/SR402 (rear)) signal
Detects the open/close status of the copyboard cover.
: Backward movement
: Forward movement
Black shading/White shading
Start key
ON
SCFWSCRWSTBY STBY
Reader motor
(M401)
LED
CISHP sensor
(SR401)
Stream reading
position
Trailing edge
of original
Shading
position
Shading
position
Shading
position
Stream reading
start position
1. Black shading/
White shading/
Original scan
CS HP
sensor
HP
Original glass
reading start
position
[1]
[2]
[3]
Forward
movement
Backward
movement
Sensor
shading
plate
Carriage
CISHP sensor (SR401)
Reader motor
Contact image
sensor (CIS)
Reader controller
PCB
Original glass
cover open/close
sensor (SR402)
Original glass
cover open/close
sensor (SR403)
Guide shaft
Carriage drive belt