Ink Passage System - Canon iPF8400S Service Manual

Chapter 2

2.5.2 Ink passage system

Agitation cam sensor
Head management sensor
Pump cam sensor
As the cam rotates, it shields the sensor light of the photointerrupter-based pump cam sensor or allows it to be transmitted. The status of the purge unit, such as
capped, suction and wiping, is detected by the combination of the pump cam sensor detection and the control of pump motor rotation by the pump encoder sensor.
Rotary flag
- Carriage lock
- Wiping
2-34
Sensor
- Capping
- Suction
- Carriage lock
- Air passage
Valve open/closed
detection sensor
Pump cam sensor
F-2-32
- Air passage valve open
- Idle suction
- Carriage move
F-2-33
Pump encoder
- Printing
- Suction during printing
- Maintenance jet
- Idle suction
0024-9591