Canon imageRUNNER ADVANCE 4551i Service Manual page 56

ADF Driver PCB
The connections of the ADF Driver PCB are indicated below.
ADF Driver
PCB J No.
Code
J401 UN_BO1
J402 UN_BO1
J404 STM1
STM2
J405 STM3
J407 CL1
SL1
PS_A1
PS_A2
PS_N1
PS_R1
UN_BO4
J409 FAN_A1
NOTE:
The Scanner Unit is connected to the Reader Controller PCB.
J402
J409
J405
Connection destination
Name
Reader Controller PCB
Reader Controller PCB
ADF Registration Motor
ADF Pickup Motor
ADF Read Motor
ADF Pickup Clutch
ADF Stamp Solenoid
Arch Sensor
Delivery Tray Sensor
Original Sensor
Post-separation Sensor
Original Display LED
ADF Cooling Fan
J401
J408
IC
J404
ADF Driver
PCB J No.
J408 PS_A5
PS_A6
PS_A7
PS_A9
PS_R2
UN_BO6
UN_BO7
UN_BO8
J410 UN_SNS1
PS_A3
PS_A4
PS_R3
UN_BO5
43
J407
J410
Connection destination
Code Name
Cover Open/Closed Sensor
Lead Sensor 1
Lead Sensor 2
Paper Back Reading Glass HP
Sensor
Registration Sensor
Original Size Sensor
Double Feed Sensor PCB (trans-
mission)
Double Feed Sensor PCB (recep-
tion)
Original Width Volume
LTR-R/ LGL Sensor
AB/ Inch Sensor
Large Size/ Small Size Sensor
Delivery Display LED
2. Technology