Power Supply; Outline; Protective Functions - Canon Inner Finisher-H1 Service Manual

Power Supply

Outline

When the host machine is turned on, it supplies the finisher controller PCB with 24 VDC and 5 VDC. The 24 VDC power is used
to drive the motors, solenoid and the switches, while the 5 VDC power is for the sensors and the like.
5VDC
Host
machine
24VDC

Protective Functions

The finisher controller PCB is provided with fuses (F1 through 4) which blow in response to overcurrent.
Finisher Controller PCB (PCB1)
+3.3V
+3.3VDC
generation
circuit
F2
F3
F1
F4
MSW1
Front Cover Switch
CPU(IC1)
PS9
M
SL1
M8
35
2. Technical Explanation
Sensors
PS1 to PS8
PS10 to PS16
Stack Tray
Paper Height Sensor
Motors
M1 to M7
M9 to M10
Paper Trailing Edge
Pushing Guide Solenoid
Stapler Motor