Canon W6200 Service Manual page 163

Part 4: Technical Reference
Cap sensor
The photo inerrupter-based cap sensor detects the status of the caps on the purge
unit.
The sensor determines that the cap is closed when the rotary flag, which operates in
conjunction with the cap cam shaft, cuts off the sensor light. The other states are
determined by the number of pulses from the pulse motor based on the timing when
the sensor light is cut off.
Sensor
* Carriage lock
* Capping
Pump homeposition sensor
The photo interrupter-based pump sensor detects the homeposition of the suction
pump rollers.
The homeposition of the pump is defined as the position where the rotary flag, which
operates in conjunction with the drive gear shaft of the rollers, cuts off the sensor
light.
Rotary flag
* Lowering of cap
* Opening of air through
valve
Figure 4-35 Cap Sensor Flag
* Homeposition * During suction
Sensor
Rotary flag
Figure 4-36 Pump Sensor Flag
* Wiping start
* Homeposition
4-54
W6200
* Wiper reversal
* Closing of air through
valve