Service manual

Chapter 4
4-1
4.1 Construction
4.1.1 Specifications, Control Methods, and Functions
0010-4242
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Major specifications, control methods, and functions of the original exposure system are summarized below.
T-4-1
4.1.2 Major Components
0010-4243
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Major components of the original exposure system are as follows:
F-4-1
T-4-2
Item Function/Method
Exposure light source LED
Original scan In BOOK mode: Original scan is performed by moving the contact image sensor (CIS).
When ADF is used: Original stream reading is performed with the contact image sensor
(CIS) fixed.
Scan resolution 600 dpi (vertical scan) x 600 dpi (horizontal scan) (Color send: 300 dpi horizontal scan)
Gradation 256
Carriage position
detection
Contact image sensor (CIS) HP sensor (SR401)
Magnification range 50% to 200%
Vertical scan direction: Image processing is by image processor PCB
Horizontal scan direction:
BOOK mode:
Carriage movement speed change and image
processing by image processor PCB *1
ADF mode:
Original feed speed change and image processing by
image processor PCB *1
Lens Rod lens array
CMOS sensor Number of lines: 1
Number of pixels: Total 7488 (incl. 7176 effective pixels)
Maximum original scan width: 304 mm
CIS drive control Drive control by reader motor (M401)
Original size detection [1] BOOK mode:
Vertical scan direction: Detection by reflection type sensor (AB/INCH)
Horizontal scan direction: Detection by reflection type sensor (AB/INCH)
[2] When ADF is used
Width: Detection by original width sensor PCB in ADF
Length: Detection by photo sensor in ADF
*1 The control method depends on the magnification. For more details, refer to "Magnification Change".
Component No. Function/Specification
[1] Copyboard cover open/close
sensor (Rear: SR402)
SR402 Photo interrupter: Detects the copyboard cover open/
close status. Starts detecting the original size when the
copyboard cover angle is 30 deg.
[2] Reader controller PCB - Controls drive of the reader unit and image processing.
[3] Original sensor 3 SR406 Detects the original size (for all destinations).
[4] Original sensor 4 SR407 Detects the original size (AB, INCH/AB).
[5] Original sensor 5 SR408 Detects the original size (INCH/A)
[6]
[4]
[5]
[3]
[9]
[8]
[2]
[1]
[12]
[7]
[7]
[11]
[10]