Basic Configuration; Basic Constitution; Overview Of Electrical Circuitry - Canon Buffer Pass Unit-N1 Service Manual

Basic Configuration

Basic Constitution

The buffer unit consists of the following major components:
PCB401
Symbol
PS401 Buffer Pass Inlet Sensor
PS402 Buffer Pass Exit Sensor
PS403 OPEN Detection Sensor
PCB401 Buffer Pass Controller PCB
M401 Buffer Pass Feed Motor

Overview of Electrical Circuitry

The buffer pass operation sequence is controlled by the buffer pass controller PCB.
The buffer pass controller PCB has a 32-bit CPU that performs sequence control.
The buffer pass controller PCB receives various commands through the communication cable from its host to drive the motors.
It also sends sensor information to its host through the communication cable.
Related service mode
• (Lv.1) COPIER > DISPLAY > VERSION > BF-PASS
Related error code
• E503-0041: Error in communication between the Finisher and Buffer Pass
• E503-0042: Error in communication between the Finisher and Buffer Pass
M401
PS403
PS401
PS402
Host Machine
UFDI
Communication
Name
Finisher
Controller PCB
UFDI
Communication
Buffer Pass
Controller PCB
7
2. Technical Explanation
Sensor
Motor