Canon iR2422 series, Service Manual

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Chapter 4
4-4
Major components of the original exposure system are as follows:
F-4-2
4.1.5 Control System Configuration (When the original size detection sensor is equipped for BOOK mode)
0020-4223
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] Reader motor M401 Pulse motor: Controls drive of the carriage.
[4] Reader heater*1 - Prevents condensation inside the original glass.
[5] Contact image sensor (CIS) - Uses LEDs for indirect exposure (LED +
Photoconductor)
[6] CISHP sensor SR401 Photo interrupter: Detects the CIS position.
[7] Copyboard cover open/close sensor SR403 Finishes detecting the original size when the
copyboard cover angle is 5 deg.
*1 Option setting
[3]
[2]
[1]
[7]
[4]
[4]
[6]
[5]