Canon imageRUNNER ADVANCE 4551i Service Manual page 58

Sensor Layout
SR9/SR10/SR11/SR12
Symbol
SR1 Registration sensor
SR2 Read sensor
SR3 Delivery reversal sensor
SR5 Document set sensor
SR6 Cover open/closed sensor
SR7 Document length sensor 1
SR8 Document length sensor 2
SR9 Different width sensor 1
SR10 Different width sensor 2
SR11 Different width sensor 3
SR12 Different width sensor 4
SR13 Document width sensor 1
SR14 Document width sensor 2
SR15 Document width sensor 3
Drive Configuration
Symbol
M1 Pickup motor
M2 Read motor
SL1 Release solenoid
SR6
SR5
SR3
SR2 SR1
Name
Registration arch creation timing
Image reading start/completion timing
Delivery reversal timing
Document set detection
Open/close of Feeder Cover
Document size detection (length)
Document size detection (width)
M1
CL2 CL1
SL2
M2
Name
Pickup documents.
Feeds documents when Stream reading or Delivery.
Shifts the Lower delivery reversal roller after reversal of a document.
45
SR8
SR7
SR15 SR13/SR14
Detection description
SL1
Role
2. Technology