Reader Relay Pcb - Canon imageRUNNER 2525 Series Service Manual

Item
CIS HP sensor
Copyboard Cover Open/Closed Sensor 0
Copyboard Cover Open/Closed Sensor 1
Original Size Sensor 0
Original Size Sensor 1
Original Size Sensor 2A
Original Size Sensor 2B
Original Size Sensor 3
CIS unit
Reader Heater

Reader relay PCB

■ Reader relay PCB
The function configuration of reader relay PCB is described below.
Jack No
J551 Receives power from the machine (printer unit)
J552 Communication with main controller PCB
J553 Communication with main controller PCB
J554 Communication with main controller PCB
J555 Connection to copyboard cover open/close sensor
J556 Connected to the contact image sensor (CIS) HP sensor.
J557 Connection to original size sensor (2A/2B/3)
J558 Connected to the contact image sensor (CIS) sensor.
J559 Connection to Scanner motor
J560 Power supply to DADF
J561 Communication with DADF
J562 Communication with DADF
J563 Connection to original size sensor (0/1)
Notation
S31 Detects CIS home position
S32 Ends original size identification with the copy board cover at 5 deg
S33 Detects the copyboard cover open/close. Starts original size identification
with the copy board cover at 30 deg.
S34 Helps identify original size (AB, INCH/AB/K, INCH/A)
S35 Helps identify original size (AB, INCH/AB/K, A)
S36 Helps identify original size (AB, INCH/AB/K, A)
S36 Helps identify original size (INCH/A)
S37 Helps identify original size (AB, INCH/AB/K, INCH/A, A)
- Indirect exposure by LED (LED & photoconductive body)
H5 Prevents condensation on the copyboard glass
PCB2 Controls the reader unit drive and image process
J554 J553
J561
J555
24
Specification/function
J551
J552
J562
J560 J559
IC2
IC7
J558
J557
J556 J563
Description
2. Technical Explanation